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Message boards : Number crunching : Solar Eclipse Challenge

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Profile Roger
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Found 1 prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,654,329)Cullen LLR Amethyst: Earned 1,000,000 credits (1,305,599)ESP LLR Ruby: Earned 2,000,000 credits (2,085,950)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,050,279)PPS LLR Ruby: Earned 2,000,000 credits (2,149,793)PSP LLR Ruby: Earned 2,000,000 credits (2,420,512)SoB LLR Amethyst: Earned 1,000,000 credits (1,493,571)SR5 LLR Ruby: Earned 2,000,000 credits (2,238,295)SGS LLR Ruby: Earned 2,000,000 credits (2,038,730)TRP LLR Ruby: Earned 2,000,000 credits (2,066,087)Woodall LLR Amethyst: Earned 1,000,000 credits (1,293,758)Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (207,387)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (5,046,966)PPS Sieve Double Bronze: Earned 100,000,000 credits (100,422,123)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (3,227,972)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,021,659)AP 26/27 Sapphire: Earned 20,000,000 credits (20,033,065)GFN Emerald: Earned 50,000,000 credits (55,077,302)PSA Sapphire: Earned 20,000,000 credits (43,298,465)
Message 119491 - Posted: 19 Jul 2018 | 14:30:55 UTC
Last modified: 20 Jul 2018 | 14:42:41 UTC

Welcome to the Solar Eclipse Challenge

The fifth Challenge of the 2018 Challenge series is a 3 day challenge to celebrate the Solar Eclipse on August 11th. The challenge is being offered on the Proth Prime Search (LLR) Project.

A solar eclipse occurs when the disk of the moon appears to cross in front of the disk of the sun. A total solar eclipse — like the one that took place on Aug. 21, 2017 — occurs when the disk of the moon blocks 100 percent of the solar disk. A partial eclipse occurs when the moon covers only part of the sun.

The Aug. 11, 2018 partial solar eclipse will touch many countries in the Northern Hemisphere. This animation shows the path of the moon's shadow.

The eclipse will start out over the North Atlantic Ocean and Greenland, moving north and east so that the shadow simultaneously moves toward Iceland, northern Europe and the northern polar regions. Continuing its path over the top of the planet, the shadow will be wide enough to cover most of northern Russia from east to west. It will then dip down into Mongolia, China and surrounding areas.

It will officially begin when the moon first appears to make contact with the sun's disk at 4:02 a.m. EDT (0802 UTC). Maximum eclipse will happen at 5:46 a.m. EDT (0946 UTC), when the eclipse is at magnitude 0.7361.

To participate in the Challenge, please select only the Proth Prime Search LLR (PPS) project in your PrimeGrid preferences section. The challenge will begin 10th August 2018 18:00 UTC and end 13th August 2018 18:00 UTC. Note that PPSE and PPS Mega do not count towards this challenge.

Application builds are available for Linux 32 and 64 bit, Windows 32 and 64 bit and MacIntel. Intel CPUs with AVX capabilities (Sandy Bridge, Ivy Bridge, Haswell, Broadwell, Skylake, Kaby Lake, Coffee Lake) will have a very large advantage, and Intel CPUs with FMA3 (Haswell, Broadwell, Skylake, Kaby Lake, Coffee Lake) will be the fastest.

ATTENTION: The primality program LLR is CPU intensive; so, it is vital to have a stable system with good cooling. It does not tolerate "even the slightest of errors." Please see this post for more details on how you can "stress test" your computer. Tasks on one CPU core will take ~30mins on fast/newer computers and 2+ hours on slower/older computers. If your computer is highly overclocked, please consider "stress testing" it. Sieving is an excellent alternative for computers that are not able to LLR. :)

Highly overclocked Haswell, Broadwell, Skylake, Kaby Lake or Coffee Lake (i.e., Intel Core i7, i5, and i3 -4xxx or better) computers running the application will see fastest times. Note that SR5 is running the latest FMA3 version of LLR which takes full advantage of the features of these newer CPUs. It's faster than the previous LLR app and draws more power and produces more heat. If you have a Haswell, Broadwell, Skylake, Kaby Lake or Coffee Lake CPU, especially if it's overclocked or has overclocked memory, and haven't run the new FMA3 LLR before, we strongly suggest running it before the challenge while you are monitoring the temperatures.

Please, please, please make sure your machines are up to the task.


Time zone converter:

The World Clock - Time Zone Converter

NOTE: The countdown clock on the front page uses the host computer time. Therefore, if your computer time is off, so will the countdown clock. For precise timing, use the UTC Time in the data section at the very top, above the countdown clock.

Scoring Information

Scores will be kept for individuals and teams. Only tasks issued AFTER 10th August 2018 18:00 UTC and received BEFORE 13th August 2018 18:00 UTC will be considered for credit. We will be using the same scoring method as we currently use for BOINC credits. A quorum of 2 is NOT needed to award Challenge score - i.e. no double checker. Therefore, each returned result will earn a Challenge score. Please note that if the result is eventually declared invalid, the score will be removed.

At the Conclusion of the Challenge

    We kindly ask users "moving on" to ABORT their tasks instead of DETACHING, RESETTING, or PAUSING.

    ABORTING tasks allows them to be recycled immediately; thus a much faster "clean up" to the end of an LLR Challenge. DETACHING, RESETTING, and PAUSING tasks causes them to remain in limbo until they EXPIRE. Therefore, we must wait until tasks expire to send them out to be completed.

    Please consider either completing what's in the queue or ABORTING them. Thank you. :)


About the Proth Prime Search

The Proth Prime Search is done in collaboration with the Proth Search project. This search looks for primes in the form k*2^n+1. With the condition 2^n > k, these are often called Proth primes. This project also has the added bonus of possibly finding factors of "classical" Fermat numbers or Generalized Fermat numbers. As this requires PrimeFormGW (PFGW) (a primality-testing program), once PrimeGrid finds a prime, it is then tested on PrimeGrid's servers for divisibility.

Proth Search only searches for k<1200. PrimeGrid created an extension to that which includes all candidates 1200<k<10000 for n<5M. It is this extension which we call PPSE.

Initially, PrimeGrid's PPS project's goal was to double check all previous work up to n=500K for odd k<1200 and to fill in any gaps that were missed. We have accomplished that now and have increased it to n=3M. PG's LLRNet searched up to n=200,000 and found several missed primes in previously searched ranges. Although primes that small did not make it into the Top 5000 Primes database, the work was still important as it may have led to new factors for "classical" Fermat numbers or Generalized Fermat numbers. While there are many GFN factors, currently there are only 297 "classical" Fermat number factors known. Current primes found in PPS definitely make it into the Top 5000 Primes database.

For more information about "Proth" primes, please visit these links:


About Proth Search

The Proth Search project was established in 1998 by Ray Ballinger and Wilfrid Keller to coordinate a distributed effort to find Proth primes (primes of the form k*2^n+1) for k < 300. Ray was interested in finding primes while Wilfrid was interested in finding divisors of Fermat number. Since that time it has expanded to include k < 1200. Mark Rodenkirch (aka rogue) has been helping Ray keep the website up to date for the past few years.

Early in 2008, PrimeGrid and Proth Search teamed up to provide a software managed distributed effort to the search. Although it might appear that PrimeGrid is duplicating some of the Proth Search effort by re-doing some ranges, few ranges on Proth Search were ever double-checked. This has resulted in PrimeGrid finding primes that were missed by previous searchers. By the end of 2008, all new primes found by PrimeGrid were eligible for inclusion in Chris Caldwell's Prime Pages Top 5000. Sometime in 2009, over 90% of the tests handed out by PrimeGrid were numbers that had never been tested.

PrimeGrid intends to continue the search indefinitely for Proth primes.

What is LLR?

The Lucas-Lehmer-Riesel (LLR) test is a primality test for numbers of the form N = k*2^n − 1, with 2^n > k. Also, LLR is a program developed by Jean Penne that can run the LLR-tests. It includes the Proth test to perform +1 tests and PRP to test non base 2 numbers. See also:


(Edouard Lucas: 1842-1891, Derrick H. Lehmer: 1905-1991, Hans Riesel: 1929-2014).
____________

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321 LLR Bronze: Earned 10,000 credits (48,835)Cullen LLR Bronze: Earned 10,000 credits (98,851)ESP LLR Bronze: Earned 10,000 credits (13,226)PPS LLR Amethyst: Earned 1,000,000 credits (1,514,074)SoB LLR Silver: Earned 100,000 credits (132,293)SR5 LLR Bronze: Earned 10,000 credits (16,010)TRP LLR Bronze: Earned 10,000 credits (14,746)Woodall LLR Silver: Earned 100,000 credits (109,455)PSA Turquoise: Earned 5,000,000 credits (7,614,290)
Message 119497 - Posted: 19 Jul 2018 | 21:33:59 UTC

Solar eclipses can occur at new moon only. Note that we have eclipses at consecutive new moons this time since 2018-Jul-13 was an eclipse as well (Wikipedia). /JeppeSN

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321 LLR Bronze: Earned 10,000 credits (48,835)Cullen LLR Bronze: Earned 10,000 credits (98,851)ESP LLR Bronze: Earned 10,000 credits (13,226)PPS LLR Amethyst: Earned 1,000,000 credits (1,514,074)SoB LLR Silver: Earned 100,000 credits (132,293)SR5 LLR Bronze: Earned 10,000 credits (16,010)TRP LLR Bronze: Earned 10,000 credits (14,746)Woodall LLR Silver: Earned 100,000 credits (109,455)PSA Turquoise: Earned 5,000,000 credits (7,614,290)
Message 119615 - Posted: 26 Jul 2018 | 15:46:54 UTC - in response to Message 119497.

Solar eclipses can occur at new moon only. Note that we have eclipses at consecutive new moons this time since 2018-Jul-13 was an eclipse as well (Wikipedia). /JeppeSN


Also, do not forget the great lunar eclipse coming in the middle between these two events, i.e. tomorrow. /JeppeSN

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Discovered 7 mega primes2018 Tour de Primes largest primeFound 4 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,232,081)Cullen LLR Turquoise: Earned 5,000,000 credits (7,579,537)ESP LLR Ruby: Earned 2,000,000 credits (2,025,796)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,052,323)PPS LLR Jade: Earned 10,000,000 credits (14,743,104)PSP LLR Ruby: Earned 2,000,000 credits (2,038,602)SoB LLR Sapphire: Earned 20,000,000 credits (26,349,389)SR5 LLR Turquoise: Earned 5,000,000 credits (5,008,621)SGS LLR Ruby: Earned 2,000,000 credits (4,026,396)TRP LLR Turquoise: Earned 5,000,000 credits (7,692,745)Woodall LLR Ruby: Earned 2,000,000 credits (2,092,453)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,892,369)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (5,460,722)PPS Sieve Double Gold: Earned 500,000,000 credits (745,985,445)TRP Sieve (suspended) Silver: Earned 100,000 credits (121,416)AP 26/27 Turquoise: Earned 5,000,000 credits (6,064,500)GFN Double Gold: Earned 500,000,000 credits (746,177,001)
Message 119616 - Posted: 26 Jul 2018 | 18:12:53 UTC - in response to Message 119615.

Solar eclipses can occur at new moon only. Note that we have eclipses at consecutive new moons this time since 2018-Jul-13 was an eclipse as well (Wikipedia). /JeppeSN


Also, do not forget the great lunar eclipse coming in the middle between these two events, i.e. tomorrow. /JeppeSN


Https://www.timeanddate.com/eclipse/lunar/2018-july-27

Check if you can see it in your part of the world :)
____________
My lucky number's 1059094^1048576+1 :) and 56414916^16384+1 (GFN-14 Consecutive Prime)

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Found 2 primes in the 2018 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,438,872)Cullen LLR Turquoise: Earned 5,000,000 credits (5,009,911)ESP LLR Ruby: Earned 2,000,000 credits (2,279,697)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,003,159)PPS LLR Ruby: Earned 2,000,000 credits (2,661,511)PSP LLR Ruby: Earned 2,000,000 credits (2,436,657)SoB LLR Turquoise: Earned 5,000,000 credits (5,031,081)SR5 LLR Turquoise: Earned 5,000,000 credits (5,004,943)SGS LLR Ruby: Earned 2,000,000 credits (2,343,882)TRP LLR Turquoise: Earned 5,000,000 credits (5,003,400)Woodall LLR Ruby: Earned 2,000,000 credits (3,895,179)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (5,004,494)PPS Sieve Emerald: Earned 50,000,000 credits (54,488,844)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,002,980)TRP Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,010,755)AP 26/27 Sapphire: Earned 20,000,000 credits (43,595,669)GFN Emerald: Earned 50,000,000 credits (50,196,792)
Message 119699 - Posted: 2 Aug 2018 | 23:28:52 UTC

So a couple days ago I decided to switch to PPS LLR in preparation for the challenge. The throughput of PPS was rather uninspiring compared to the other projects I had been running. So I decided to look at how I was running PPS and did some quick testing on both my i5-4670 (DDR3-1600) and my i7-4790 (DDR3-1600). I started out with one task on four cores and was getting a lot of 1st's, but not a lot of total units done. So I tried two tasks on two cores each and found that while each unit was slower, overall throughput was higher. At that point I knew I had to try the traditional one task per core and see what happens. Then it only seemed prudent to run all three conditions on both CPUs to see if there was a difference.

These tests were all run using live units and the times are visually taken from the BOINC manager. So please take these results with more than a few grains of salt. haha

i7-4790 DDR3-1600 PPS LLR runtimes

Per Unit:
4c 1t = 10 minutes
2c 2t = 17 minutes
1c 4t = 37 minutes

Per two units:
4c 1t = 20 minutes
2c 2t = 17 minutes
1c 4t = 37 minutes

Per four units:
4c 1t = 40 minutes
2c 2t = 34 minutes
1c 4t = 37 minutes

i5-4670 DDR3-1600 PPS LLR runtimes

Per unit:
4c 1t = 10 minutes
2c 2t = 17 minutes
1c 4t = 40 minutes

Per two units:
4c 1t = 20 minutes
2c 2t = 17 minutes
1c 4t = 40 minutes

Per four units:
4c 1t = 40 minutes
2c 2t = 34 minutes
1c 4t = 40 minutes

PPS runs remarkably similarly on the two CPUs when running one or two tasks at a time. Bump up to four tasks at a time and the i5 starts to fall off.

If you have a Haswell CPU it looks like the best for speed is one task on four cores and if you want the best throughput it looks like the best is two tasks on two cores each.

Running four tasks at once was all around bad on both. It had the slowest speed per unit, lowest or second lowest throughput, and had the highest CPU temperature.

Different CPU families and different RAM speeds will drastically alter these results.

May whoever reads this find it informative or inspiring.
Happy prime finding!
____________
My Primes
Badge Score: 4*2 + 5*7 + 6*5 + 8*1 + 9*2 = 99

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Discovered 2 mega primesEliminated 1 conjecture "k"Found 3 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (7,124,499)Cullen LLR Turquoise: Earned 5,000,000 credits (5,149,818)ESP LLR Turquoise: Earned 5,000,000 credits (5,439,896)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (3,220,326)PPS LLR Sapphire: Earned 20,000,000 credits (35,828,991)PSP LLR Jade: Earned 10,000,000 credits (10,128,604)SoB LLR Jade: Earned 10,000,000 credits (10,478,064)SR5 LLR Jade: Earned 10,000,000 credits (16,848,073)SGS LLR Turquoise: Earned 5,000,000 credits (6,702,766)TPS LLR (retired) Bronze: Earned 10,000 credits (34,130)TRP LLR Turquoise: Earned 5,000,000 credits (8,739,858)Woodall LLR Ruby: Earned 2,000,000 credits (4,479,410)321 Sieve (suspended) Silver: Earned 100,000 credits (203,937)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,383,853)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (20,281,267)PPS Sieve Emerald: Earned 50,000,000 credits (74,140,875)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,293,882)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,012,757)AP 26/27 Jade: Earned 10,000,000 credits (15,547,126)GFN Sapphire: Earned 20,000,000 credits (23,327,657)PSA Ruby: Earned 2,000,000 credits (2,939,755)
Message 119702 - Posted: 3 Aug 2018 | 6:28:12 UTC - in response to Message 119699.

Interesting results. I should probably test same.

With the caution I haven't had the 1st coffee of the day yet, for the i7 I would have expected 4 tasks (one per core) to be best throughput as the work should fit on CPU cache comfortably, thus ram speed shouldn't really matter here. I note HT is on, and unless you've forced affinity, Windows scheduler can result in about 10% performance drop when running one task per core. If you turn off HT, or manually set affinity, you might see a small boost there. When multi-thread is enabled, it works a bit differently and you don't have to worry about it then.

On the i5, we're borderline running out of CPU cache, so there may be a performance impact one task per core, and thus 2 tasks of two threads each might offset that.

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321 LLR Ruby: Earned 2,000,000 credits (4,564,140)Cullen LLR Ruby: Earned 2,000,000 credits (4,563,655)ESP LLR Ruby: Earned 2,000,000 credits (4,527,638)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (4,524,108)PPS LLR Ruby: Earned 2,000,000 credits (3,919,083)PSP LLR Ruby: Earned 2,000,000 credits (4,545,606)SoB LLR Ruby: Earned 2,000,000 credits (4,057,135)SR5 LLR Ruby: Earned 2,000,000 credits (4,429,958)SGS LLR Ruby: Earned 2,000,000 credits (4,285,716)TRP LLR Ruby: Earned 2,000,000 credits (4,608,089)Woodall LLR Ruby: Earned 2,000,000 credits (4,579,282)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (4,187,263)PPS Sieve Turquoise: Earned 5,000,000 credits (5,201,453)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,000,053)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,030,160)AP 26/27 Ruby: Earned 2,000,000 credits (3,157,583)GFN Sapphire: Earned 20,000,000 credits (22,686,870)PSA Double Bronze: Earned 100,000,000 credits (128,643,680)
Message 119708 - Posted: 3 Aug 2018 | 9:42:34 UTC - in response to Message 119702.

Interesting results. I should probably test same.

With the caution I haven't had the 1st coffee of the day yet, for the i7 I would have expected 4 tasks (one per core) to be best throughput as the work should fit on CPU cache comfortably, thus ram speed shouldn't really matter here.

Remember when Broadwell (as in, i5 5675c) was a thing and LLR Multithreading wasn't? Man, fun times, fun times indeed...

Dunno, it just came to my mind and I felt like sharing it.

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Found 2 primes in the 2018 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,438,872)Cullen LLR Turquoise: Earned 5,000,000 credits (5,009,911)ESP LLR Ruby: Earned 2,000,000 credits (2,279,697)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,003,159)PPS LLR Ruby: Earned 2,000,000 credits (2,661,511)PSP LLR Ruby: Earned 2,000,000 credits (2,436,657)SoB LLR Turquoise: Earned 5,000,000 credits (5,031,081)SR5 LLR Turquoise: Earned 5,000,000 credits (5,004,943)SGS LLR Ruby: Earned 2,000,000 credits (2,343,882)TRP LLR Turquoise: Earned 5,000,000 credits (5,003,400)Woodall LLR Ruby: Earned 2,000,000 credits (3,895,179)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (5,004,494)PPS Sieve Emerald: Earned 50,000,000 credits (54,488,844)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,002,980)TRP Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,010,755)AP 26/27 Sapphire: Earned 20,000,000 credits (43,595,669)GFN Emerald: Earned 50,000,000 credits (50,196,792)
Message 119709 - Posted: 3 Aug 2018 | 9:56:00 UTC - in response to Message 119702.

Interesting results. I should probably test same.

With the caution I haven't had the 1st coffee of the day yet, for the i7 I would have expected 4 tasks (one per core) to be best throughput as the work should fit on CPU cache comfortably, thus ram speed shouldn't really matter here. I note HT is on, and unless you've forced affinity, Windows scheduler can result in about 10% performance drop when running one task per core. If you turn off HT, or manually set affinity, you might see a small boost there. When multi-thread is enabled, it works a bit differently and you don't have to worry about it then.

On the i5, we're borderline running out of CPU cache, so there may be a performance impact one task per core, and thus 2 tasks of two threads each might offset that.


I've left HT on for the i7 since the i7 is also my "daily driver" and the extra threads can keep the GPU fed (currently running AP) with minimal impact on the CPU tasks. Yes, AP uses very little CPU time anyway, but still it is best to minimize any impact from GPU crunching.

It should also be noted that the CPU temperatures on both CPUs are lower with 2 tasks as opposed to 4 tasks at a time. And this time of year that is very important. I did pay attention to clock speeds and did not see any evidence of thermal throttling.
____________
My Primes
Badge Score: 4*2 + 5*7 + 6*5 + 8*1 + 9*2 = 99

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Discovered 2 mega primesEliminated 1 conjecture "k"Found 3 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (7,124,499)Cullen LLR Turquoise: Earned 5,000,000 credits (5,149,818)ESP LLR Turquoise: Earned 5,000,000 credits (5,439,896)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (3,220,326)PPS LLR Sapphire: Earned 20,000,000 credits (35,828,991)PSP LLR Jade: Earned 10,000,000 credits (10,128,604)SoB LLR Jade: Earned 10,000,000 credits (10,478,064)SR5 LLR Jade: Earned 10,000,000 credits (16,848,073)SGS LLR Turquoise: Earned 5,000,000 credits (6,702,766)TPS LLR (retired) Bronze: Earned 10,000 credits (34,130)TRP LLR Turquoise: Earned 5,000,000 credits (8,739,858)Woodall LLR Ruby: Earned 2,000,000 credits (4,479,410)321 Sieve (suspended) Silver: Earned 100,000 credits (203,937)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,383,853)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (20,281,267)PPS Sieve Emerald: Earned 50,000,000 credits (74,140,875)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,293,882)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,012,757)AP 26/27 Jade: Earned 10,000,000 credits (15,547,126)GFN Sapphire: Earned 20,000,000 credits (23,327,657)PSA Ruby: Earned 2,000,000 credits (2,939,755)
Message 119713 - Posted: 3 Aug 2018 | 11:22:32 UTC - in response to Message 119709.

You can still try setting manual affinity, but, with a GPU thrown in the mix I don't know how that would work. How much CPU time does AP take? When running multi-thread mode, it appears to set affinity in some way, so you don't need to do it manually.

Higher temps are an indicator of doing more work, although not necessarily useful work...

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Found 2 primes in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,008,573)Cullen LLR Turquoise: Earned 5,000,000 credits (5,005,909)ESP LLR Turquoise: Earned 5,000,000 credits (5,003,216)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (4,865,147)PPS LLR Ruby: Earned 2,000,000 credits (2,623,511)PSP LLR Ruby: Earned 2,000,000 credits (3,998,562)SoB LLR Turquoise: Earned 5,000,000 credits (8,031,952)SR5 LLR Ruby: Earned 2,000,000 credits (3,004,172)SGS LLR Ruby: Earned 2,000,000 credits (2,555,530)TRP LLR Ruby: Earned 2,000,000 credits (3,000,132)Woodall LLR Ruby: Earned 2,000,000 credits (2,970,590)Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (268,250)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (9,907,668)PPS Sieve Double Silver: Earned 200,000,000 credits (266,666,326)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,000,133)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,000,970)AP 26/27 Emerald: Earned 50,000,000 credits (90,017,395)GFN Emerald: Earned 50,000,000 credits (90,000,019)PSA Emerald: Earned 50,000,000 credits (90,000,001)
Message 119716 - Posted: 3 Aug 2018 | 11:42:45 UTC

Interesting re temperatures. I was just going to leave mine on 1 task but will now benchmark 2 tasks to see which is cooler.

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Found 2 primes in the 2018 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,438,872)Cullen LLR Turquoise: Earned 5,000,000 credits (5,009,911)ESP LLR Ruby: Earned 2,000,000 credits (2,279,697)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,003,159)PPS LLR Ruby: Earned 2,000,000 credits (2,661,511)PSP LLR Ruby: Earned 2,000,000 credits (2,436,657)SoB LLR Turquoise: Earned 5,000,000 credits (5,031,081)SR5 LLR Turquoise: Earned 5,000,000 credits (5,004,943)SGS LLR Ruby: Earned 2,000,000 credits (2,343,882)TRP LLR Turquoise: Earned 5,000,000 credits (5,003,400)Woodall LLR Ruby: Earned 2,000,000 credits (3,895,179)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (5,004,494)PPS Sieve Emerald: Earned 50,000,000 credits (54,488,844)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,002,980)TRP Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,010,755)AP 26/27 Sapphire: Earned 20,000,000 credits (43,595,669)GFN Emerald: Earned 50,000,000 credits (50,196,792)
Message 119717 - Posted: 3 Aug 2018 | 12:05:19 UTC - in response to Message 119716.

Interesting re temperatures. I was just going to leave mine on 1 task but will now benchmark 2 tasks to see which is cooler.


1 task was the coolest on the i7 around 70C
2 tasks was around 75C
4 tasks was around 80C

The temperatures will of course vary with room temperature, air flow, CPU cooler quality, etc. That's why I didn't really include temperature as a key part of the test unless throttling was taking place.

Looking at your systems though, Dave, I think 2 tasks at a time on your i7-2600K would probably be better than 1 task for overall performance. But test it out and see for yourself for sure.
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Found 2 primes in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,008,573)Cullen LLR Turquoise: Earned 5,000,000 credits (5,005,909)ESP LLR Turquoise: Earned 5,000,000 credits (5,003,216)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (4,865,147)PPS LLR Ruby: Earned 2,000,000 credits (2,623,511)PSP LLR Ruby: Earned 2,000,000 credits (3,998,562)SoB LLR Turquoise: Earned 5,000,000 credits (8,031,952)SR5 LLR Ruby: Earned 2,000,000 credits (3,004,172)SGS LLR Ruby: Earned 2,000,000 credits (2,555,530)TRP LLR Ruby: Earned 2,000,000 credits (3,000,132)Woodall LLR Ruby: Earned 2,000,000 credits (2,970,590)Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (268,250)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (9,907,668)PPS Sieve Double Silver: Earned 200,000,000 credits (266,666,326)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,000,133)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,000,970)AP 26/27 Emerald: Earned 50,000,000 credits (90,017,395)GFN Emerald: Earned 50,000,000 credits (90,000,019)PSA Emerald: Earned 50,000,000 credits (90,000,001)
Message 119720 - Posted: 3 Aug 2018 | 13:12:06 UTC

Ty Keith I'll give it a bash.

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Found 2 primes in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,008,573)Cullen LLR Turquoise: Earned 5,000,000 credits (5,005,909)ESP LLR Turquoise: Earned 5,000,000 credits (5,003,216)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (4,865,147)PPS LLR Ruby: Earned 2,000,000 credits (2,623,511)PSP LLR Ruby: Earned 2,000,000 credits (3,998,562)SoB LLR Turquoise: Earned 5,000,000 credits (8,031,952)SR5 LLR Ruby: Earned 2,000,000 credits (3,004,172)SGS LLR Ruby: Earned 2,000,000 credits (2,555,530)TRP LLR Ruby: Earned 2,000,000 credits (3,000,132)Woodall LLR Ruby: Earned 2,000,000 credits (2,970,590)Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (268,250)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (9,907,668)PPS Sieve Double Silver: Earned 200,000,000 credits (266,666,326)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,000,133)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,000,970)AP 26/27 Emerald: Earned 50,000,000 credits (90,017,395)GFN Emerald: Earned 50,000,000 credits (90,000,019)PSA Emerald: Earned 50,000,000 credits (90,000,001)
Message 119725 - Posted: 3 Aug 2018 | 16:18:12 UTC - in response to Message 119720.

Ty Keith I'll give it a bash.

Literally just 1C difference.

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Found 2 primes in the 2018 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,438,872)Cullen LLR Turquoise: Earned 5,000,000 credits (5,009,911)ESP LLR Ruby: Earned 2,000,000 credits (2,279,697)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,003,159)PPS LLR Ruby: Earned 2,000,000 credits (2,661,511)PSP LLR Ruby: Earned 2,000,000 credits (2,436,657)SoB LLR Turquoise: Earned 5,000,000 credits (5,031,081)SR5 LLR Turquoise: Earned 5,000,000 credits (5,004,943)SGS LLR Ruby: Earned 2,000,000 credits (2,343,882)TRP LLR Turquoise: Earned 5,000,000 credits (5,003,400)Woodall LLR Ruby: Earned 2,000,000 credits (3,895,179)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (5,004,494)PPS Sieve Emerald: Earned 50,000,000 credits (54,488,844)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,002,980)TRP Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,010,755)AP 26/27 Sapphire: Earned 20,000,000 credits (43,595,669)GFN Emerald: Earned 50,000,000 credits (50,196,792)
Message 119726 - Posted: 3 Aug 2018 | 18:44:10 UTC - in response to Message 119725.

Ty Keith I'll give it a bash.

Literally just 1C difference.


And that's why you test.
If 1 task 4 cores and 2 tasks 2 cores each gives the same throughput then go with the fastest run time so you have a better chance of being 1st.
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Discovered 2 mega primesEliminated 1 conjecture "k"Found 3 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (7,124,499)Cullen LLR Turquoise: Earned 5,000,000 credits (5,149,818)ESP LLR Turquoise: Earned 5,000,000 credits (5,439,896)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (3,220,326)PPS LLR Sapphire: Earned 20,000,000 credits (35,828,991)PSP LLR Jade: Earned 10,000,000 credits (10,128,604)SoB LLR Jade: Earned 10,000,000 credits (10,478,064)SR5 LLR Jade: Earned 10,000,000 credits (16,848,073)SGS LLR Turquoise: Earned 5,000,000 credits (6,702,766)TPS LLR (retired) Bronze: Earned 10,000 credits (34,130)TRP LLR Turquoise: Earned 5,000,000 credits (8,739,858)Woodall LLR Ruby: Earned 2,000,000 credits (4,479,410)321 Sieve (suspended) Silver: Earned 100,000 credits (203,937)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,383,853)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (20,281,267)PPS Sieve Emerald: Earned 50,000,000 credits (74,140,875)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,293,882)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,012,757)AP 26/27 Jade: Earned 10,000,000 credits (15,547,126)GFN Sapphire: Earned 20,000,000 credits (23,327,657)PSA Ruby: Earned 2,000,000 credits (2,939,755)
Message 119733 - Posted: 4 Aug 2018 | 13:16:13 UTC

Just done some testing on a 6700k.

Single -t4: 695s
Dual -t2: 940.5s
Quad -t1: 1553.9s

As suspected, running 4x single thread tasks is maximum throughput. Using -t2 speeds things up, but you lose efficiency in the process, and only does 82% of the work compared to single thread units. Running units with 4 threads, just no. That's only 55% the throughput.

Basically this doesn't seem to have changed at all from the last time I looked at it. I'd caution the difference between my testing and Keith's is that I'm NOT running any GPU tasks.

Before anyone says I used Skylake and Keith was on Haswell, I don't really expect that to be significant. The i5 vs i7 difference might come into it a little though, as the smaller cache of the i5 could start to impact things.

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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,504,899)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (2,001,789)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,004,898)PPS LLR Ruby: Earned 2,000,000 credits (2,082,200)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (24,467,444)SR5 LLR Turquoise: Earned 5,000,000 credits (7,216,756)SGS LLR Ruby: Earned 2,000,000 credits (2,010,466)TRP LLR Ruby: Earned 2,000,000 credits (2,433,520)Woodall LLR Amethyst: Earned 1,000,000 credits (1,920,417)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,804,369)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (6,499,818)GFN Emerald: Earned 50,000,000 credits (52,696,314)PSA Jade: Earned 10,000,000 credits (10,038,118)
Message 119734 - Posted: 4 Aug 2018 | 13:23:56 UTC - in response to Message 119733.

Before anyone says I used Skylake and Keith was on Haswell, I don't really expect that to be significant. The i5 vs i7 difference might come into it a little though, as the smaller cache of the i5 could start to impact things.


Don't you have DDR4 memory in the Skylake? If so, that may have a significant effect. Faster memory would give an advantage to running 4 tasks of 1 thread each. The Haswell's had DDR3-1600 memory.
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Found 2 primes in the 2018 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,438,872)Cullen LLR Turquoise: Earned 5,000,000 credits (5,009,911)ESP LLR Ruby: Earned 2,000,000 credits (2,279,697)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,003,159)PPS LLR Ruby: Earned 2,000,000 credits (2,661,511)PSP LLR Ruby: Earned 2,000,000 credits (2,436,657)SoB LLR Turquoise: Earned 5,000,000 credits (5,031,081)SR5 LLR Turquoise: Earned 5,000,000 credits (5,004,943)SGS LLR Ruby: Earned 2,000,000 credits (2,343,882)TRP LLR Turquoise: Earned 5,000,000 credits (5,003,400)Woodall LLR Ruby: Earned 2,000,000 credits (3,895,179)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (5,004,494)PPS Sieve Emerald: Earned 50,000,000 credits (54,488,844)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,002,980)TRP Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,010,755)AP 26/27 Sapphire: Earned 20,000,000 credits (43,595,669)GFN Emerald: Earned 50,000,000 credits (50,196,792)
Message 119736 - Posted: 4 Aug 2018 | 14:12:49 UTC - in response to Message 119733.

Just done some testing on a 6700k.

Single -t4: 695s
Dual -t2: 940.5s
Quad -t1: 1553.9s


Interesting results. I expected the Skylake to beat every one of my tests. It certainly beat the quad -t1 times by a wide margin, but lost out in the single -t4.
I suspect, as Michael said, that the DDR4 helped once the cache was loaded up with the four tasks. That likely explains why Skylake and newer seems to beat the 4790 by quite a wide margin on the larger tasks. The 6700K also has a very slight clock speed advantage over the 4790 at stock speeds, but I doubt that means much here.

And yes, the tests I conducted were less synthetic and more "real world" as many people, myself included, will be running GPU tasks of various kinds during the challenge.
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Discovered 2 mega primesEliminated 1 conjecture "k"Found 3 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (7,124,499)Cullen LLR Turquoise: Earned 5,000,000 credits (5,149,818)ESP LLR Turquoise: Earned 5,000,000 credits (5,439,896)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (3,220,326)PPS LLR Sapphire: Earned 20,000,000 credits (35,828,991)PSP LLR Jade: Earned 10,000,000 credits (10,128,604)SoB LLR Jade: Earned 10,000,000 credits (10,478,064)SR5 LLR Jade: Earned 10,000,000 credits (16,848,073)SGS LLR Turquoise: Earned 5,000,000 credits (6,702,766)TPS LLR (retired) Bronze: Earned 10,000 credits (34,130)TRP LLR Turquoise: Earned 5,000,000 credits (8,739,858)Woodall LLR Ruby: Earned 2,000,000 credits (4,479,410)321 Sieve (suspended) Silver: Earned 100,000 credits (203,937)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,383,853)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (20,281,267)PPS Sieve Emerald: Earned 50,000,000 credits (74,140,875)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,293,882)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,012,757)AP 26/27 Jade: Earned 10,000,000 credits (15,547,126)GFN Sapphire: Earned 20,000,000 credits (23,327,657)PSA Ruby: Earned 2,000,000 credits (2,939,755)
Message 119737 - Posted: 4 Aug 2018 | 15:40:12 UTC

On an i7, it shouldn't touch the ram even at one task per core. The work can be done out of L3 cache. Only on i5 might that become a factor.

As for time differences, I'd expect it to scale with clock, plus another 14% for -lake processors compared to Haswell when not ram limited as they added something to make it go faster.

The faster -t 4 result on Haswell has got my interest now... I have a Haswell quad I can excavate later and try on that.

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Discovered 2 mega primesEliminated 1 conjecture "k"Found 3 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (7,124,499)Cullen LLR Turquoise: Earned 5,000,000 credits (5,149,818)ESP LLR Turquoise: Earned 5,000,000 credits (5,439,896)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (3,220,326)PPS LLR Sapphire: Earned 20,000,000 credits (35,828,991)PSP LLR Jade: Earned 10,000,000 credits (10,128,604)SoB LLR Jade: Earned 10,000,000 credits (10,478,064)SR5 LLR Jade: Earned 10,000,000 credits (16,848,073)SGS LLR Turquoise: Earned 5,000,000 credits (6,702,766)TPS LLR (retired) Bronze: Earned 10,000 credits (34,130)TRP LLR Turquoise: Earned 5,000,000 credits (8,739,858)Woodall LLR Ruby: Earned 2,000,000 credits (4,479,410)321 Sieve (suspended) Silver: Earned 100,000 credits (203,937)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,383,853)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (20,281,267)PPS Sieve Emerald: Earned 50,000,000 credits (74,140,875)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,293,882)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,012,757)AP 26/27 Jade: Earned 10,000,000 credits (15,547,126)GFN Sapphire: Earned 20,000,000 credits (23,327,657)PSA Ruby: Earned 2,000,000 credits (2,939,755)
Message 119743 - Posted: 5 Aug 2018 | 17:48:19 UTC - in response to Message 119737.
Last modified: 5 Aug 2018 | 17:50:38 UTC

Haswell test is still running, but I also ran a test on my 6600k. My theory was, the the smaller L3 cache may start to hinder it.

Single -t4: 695s
Dual -t2: 1072.5s
Quad -t1: 1767.8s

For total throughput, going one per core is still best. Like the 6700k before, running two units of two threads each was 82% the throughput. And one task of 4 threads, came out 64%, higher than on the 6700k yesterday of 55%.

What is interesting is if you look at it in terms of work done. The 6600k runs at 3.6 GHz all cores, stock, compared to 4.0 GHz on the 6700k. The 6700k should be 11% faster on clock.

Running 4 tasks, one per core, the 6700k was 15% faster. Running two tasks of two threads, it was similar at 14%. Maybe it is the cache in the case of 4 tasks, but it shouldn't be the case in 2 of 2, so I don't think I have a complete picture here. And the most interesting part... running one task of 4 threads, they were the same. The 6600k and 6700k both took the same median time to the second. My assumption here is that the code isn't able to scale well in that scenario, hence some limitation other than core clock dictates how fast it can go.

It should be really interesting to see how the Haswell results come out now...

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Discovered 2 mega primesEliminated 1 conjecture "k"Found 3 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (7,124,499)Cullen LLR Turquoise: Earned 5,000,000 credits (5,149,818)ESP LLR Turquoise: Earned 5,000,000 credits (5,439,896)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (3,220,326)PPS LLR Sapphire: Earned 20,000,000 credits (35,828,991)PSP LLR Jade: Earned 10,000,000 credits (10,128,604)SoB LLR Jade: Earned 10,000,000 credits (10,478,064)SR5 LLR Jade: Earned 10,000,000 credits (16,848,073)SGS LLR Turquoise: Earned 5,000,000 credits (6,702,766)TPS LLR (retired) Bronze: Earned 10,000 credits (34,130)TRP LLR Turquoise: Earned 5,000,000 credits (8,739,858)Woodall LLR Ruby: Earned 2,000,000 credits (4,479,410)321 Sieve (suspended) Silver: Earned 100,000 credits (203,937)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,383,853)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (20,281,267)PPS Sieve Emerald: Earned 50,000,000 credits (74,140,875)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,293,882)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,012,757)AP 26/27 Jade: Earned 10,000,000 credits (15,547,126)GFN Sapphire: Earned 20,000,000 credits (23,327,657)PSA Ruby: Earned 2,000,000 credits (2,939,755)
Message 119744 - Posted: 5 Aug 2018 | 19:47:41 UTC - in response to Message 119743.

Haswell results are in... and I'm not sure how to digest it.

Forget comparing across architectures for now... how does it scale?

CPU: i5-4570s (3.2 GHz all cores active)

Single -t4: 708s
Dual -t2: 1183.5s
Quad -t1: 2243.8s

Once again, running one task per core was highest throughput, with two of two close at 95%, and one task of 4 threads at 79%.

The one task with 4 threads is only 2% slower than either of the Skylake results. This is suggestive of some other limit in scaling this work to 4 threads.

I've previously come up with a value that Skylake is 14% faster per clock than Haswell, when not limited elsewhere e.g. ram bandwidth. Following allows for this 14% and the clock differences.

Running 4x -t1, it seems to scale within expectations, within a few % or so.

Running 2x -t2, I'm not sure what to do with this... it is over-performing compared to Skylake. I don't have an explanation for this. I would guess the lower running clock might be a contributing factor, and mask multi-thread scaling losses in some way, but I haven't tried to prove this or otherwise.

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321 LLR Jade: Earned 10,000,000 credits (14,356,260)Cullen LLR Turquoise: Earned 5,000,000 credits (5,331,463)ESP LLR Turquoise: Earned 5,000,000 credits (6,471,102)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,259,128)PPS LLR Ruby: Earned 2,000,000 credits (3,225,518)PSP LLR Jade: Earned 10,000,000 credits (11,359,246)SoB LLR Jade: Earned 10,000,000 credits (17,891,611)SR5 LLR Turquoise: Earned 5,000,000 credits (6,150,877)SGS LLR Ruby: Earned 2,000,000 credits (2,155,650)TRP LLR Ruby: Earned 2,000,000 credits (2,226,756)Woodall LLR Turquoise: Earned 5,000,000 credits (6,588,005)Generalized Cullen/Woodall Sieve Jade: Earned 10,000,000 credits (11,205,264)PPS Sieve Double Bronze: Earned 100,000,000 credits (175,160,531)GFN Amethyst: Earned 1,000,000 credits (1,146,417)
Message 119747 - Posted: 6 Aug 2018 | 12:25:32 UTC

Keith wrote:
Different CPU families and different RAM speeds will drastically alter these results.

Maybe not drastically, but yes, it will change results.

mackerel wrote:
Just done some testing on a 6700k.

Single -t4: 695s
Dual -t2: 940.5s
Quad -t1: 1553.9s

As suspected, running 4x single thread tasks is maximum throughput.

I tested an i7 7700K (with DDR4 3200 C14, and with a moderate negative AVX offset for the CPU clock defined in the BIOS), not only with the three configs that you chose, but with a few others more. It's an i7 after all, which has 8 logical CPUs, not 4. I came to a different conclusion than you; maybe because our systems differ, or maybe because I tested more configs.

Furthermore, while I haven't investigated what the variability between currently issued PPS-LLR WUs is, I found with several other LLR subprojects in the past that the variability between WUs is greater than the throughput difference between the best and next best #tasks x #threads configuration on a given machine. This is especially true on machines with higher core count. I therefore eliminate WU variability in my own throughput tests.

Take-home message for all who don't have time to perform their own testing:

If you configure your machine as per test results that you read in forum posts, taking care that the tested machine and yours are similar, then you will probably get a config which is close enough to the optimum. It may be somewhat off the precise optimum though, due to hardware differences or due to imprecision of the tests.

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Discovered 2 mega primesEliminated 1 conjecture "k"Found 3 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (7,124,499)Cullen LLR Turquoise: Earned 5,000,000 credits (5,149,818)ESP LLR Turquoise: Earned 5,000,000 credits (5,439,896)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (3,220,326)PPS LLR Sapphire: Earned 20,000,000 credits (35,828,991)PSP LLR Jade: Earned 10,000,000 credits (10,128,604)SoB LLR Jade: Earned 10,000,000 credits (10,478,064)SR5 LLR Jade: Earned 10,000,000 credits (16,848,073)SGS LLR Turquoise: Earned 5,000,000 credits (6,702,766)TPS LLR (retired) Bronze: Earned 10,000 credits (34,130)TRP LLR Turquoise: Earned 5,000,000 credits (8,739,858)Woodall LLR Ruby: Earned 2,000,000 credits (4,479,410)321 Sieve (suspended) Silver: Earned 100,000 credits (203,937)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,383,853)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (20,281,267)PPS Sieve Emerald: Earned 50,000,000 credits (74,140,875)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,293,882)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,012,757)AP 26/27 Jade: Earned 10,000,000 credits (15,547,126)GFN Sapphire: Earned 20,000,000 credits (23,327,657)PSA Ruby: Earned 2,000,000 credits (2,939,755)
Message 119750 - Posted: 6 Aug 2018 | 14:44:41 UTC - in response to Message 119747.

I tested an i7 7700K (with DDR4 3200 C14, and with a moderate negative AVX offset for the CPU clock defined in the BIOS), not only with the three configs that you chose, but with a few others more. It's an i7 after all, which has 8 logical CPUs, not 4. I came to a different conclusion than you; maybe because our systems differ, or maybe because I tested more configs.

Care to share those results?

In my experience, I've never managed to prove a case where using HT provides more throughput than not using HT. There are some cases where using HT appears to help, but they only allow you to reclaim losses from elsewhere. One example is running one per core without affinity results in around 10% throughput loss. You can regain that 10% loss by either running more tasks, or setting affinity. Using affinity is more power efficient so would be preferred, as tapping into HT also increases power usage, even if there is no performance gain.

Furthermore, while I haven't investigated what the variability between currently issued PPS-LLR WUs is, I found with several other LLR subprojects in the past that the variability between WUs is greater than the throughput difference between the best and next best #tasks x #threads configuration on a given machine. This is especially true on machines with higher core count. I therefore eliminate WU variability in my own throughput tests.

There are a number of different "k" values being tested. Even when at a similar size, it can end up working differently. I kinda brute force around it. Do a large enough sample, and take the median. Less controlled than running the same task, but I find it good enough within a couple % or so.

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321 LLR Jade: Earned 10,000,000 credits (14,356,260)Cullen LLR Turquoise: Earned 5,000,000 credits (5,331,463)ESP LLR Turquoise: Earned 5,000,000 credits (6,471,102)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,259,128)PPS LLR Ruby: Earned 2,000,000 credits (3,225,518)PSP LLR Jade: Earned 10,000,000 credits (11,359,246)SoB LLR Jade: Earned 10,000,000 credits (17,891,611)SR5 LLR Turquoise: Earned 5,000,000 credits (6,150,877)SGS LLR Ruby: Earned 2,000,000 credits (2,155,650)TRP LLR Ruby: Earned 2,000,000 credits (2,226,756)Woodall LLR Turquoise: Earned 5,000,000 credits (6,588,005)Generalized Cullen/Woodall Sieve Jade: Earned 10,000,000 credits (11,205,264)PPS Sieve Double Bronze: Earned 100,000,000 credits (175,160,531)GFN Amethyst: Earned 1,000,000 credits (1,146,417)
Message 119753 - Posted: 6 Aug 2018 | 16:40:44 UTC - in response to Message 119750.
Last modified: 6 Aug 2018 | 16:42:24 UTC

mackerel wrote:
xii5ku wrote:
I tested an i7 7700K (with DDR4 3200 C14 [...] I came to a different conclusion than you; maybe because our systems differ, or maybe because I tested more configs.

Care to share those results?

Processor clock was 4.2 GHz.
Operating system: Linux Mint 18.3.
Input parameters:
1000000000:P:1:2:257
839 2610671
which gave 159.04 credits. From a quick glance at others' hosts with PPS results, this seems to be in the middle of the range of current PPS credit/task.

Meaning of the following numbers:
    number of simultaneous tasks x number of tasks per process: median run time per task -- points per day per host

    4p x 1t: 1434 s -- 38,300 ppd
    2p x 2t: 870 s -- 31,600 ppd
    1P x 4t: 490 s -- 28,000 ppd

    ​8p x 1t: 3938 s -- 27,900 ppd
    4p x 2t: 1374 s -- 40,000 ppd
    2p x 4t: 747 s -- 36,800 ppd
    1p x 8t: 436 s -- 31,500 ppd

mackerel wrote:
In my experience, I've never managed to prove a case where using HT provides more throughput than not using HT.

Measurements on the hardware that I have have shown throughput gains from HT in several LLR based subprojects.

But in PPS-LLR, the host with i7 7700K was the only one among the hosts which I tested which gained from HT.

mackerel wrote:
One example is running one per core without affinity results in around 10% throughput loss.

I run PrimeGrid on Linux only.

mackerel wrote:
There are a number of different "k" values being tested. Even when at a similar size, it can end up working differently. I kinda brute force around it. Do a large enough sample, and take the median. Less controlled than running the same task, but I find it good enough within a couple % or so.

Right; I didn't explore the current range of available PPS-LLR WUs. Something I should look into in future testing.

Since I run a variety of projects besides PrimeGrid, I prefer my PrimeGrid tests to take as little time as can be reasonably arranged. And if the test regime is fully reproducible, I like it even better.

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Discovered 2 mega primesEliminated 1 conjecture "k"Found 3 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (7,124,499)Cullen LLR Turquoise: Earned 5,000,000 credits (5,149,818)ESP LLR Turquoise: Earned 5,000,000 credits (5,439,896)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (3,220,326)PPS LLR Sapphire: Earned 20,000,000 credits (35,828,991)PSP LLR Jade: Earned 10,000,000 credits (10,128,604)SoB LLR Jade: Earned 10,000,000 credits (10,478,064)SR5 LLR Jade: Earned 10,000,000 credits (16,848,073)SGS LLR Turquoise: Earned 5,000,000 credits (6,702,766)TPS LLR (retired) Bronze: Earned 10,000 credits (34,130)TRP LLR Turquoise: Earned 5,000,000 credits (8,739,858)Woodall LLR Ruby: Earned 2,000,000 credits (4,479,410)321 Sieve (suspended) Silver: Earned 100,000 credits (203,937)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,383,853)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (20,281,267)PPS Sieve Emerald: Earned 50,000,000 credits (74,140,875)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,293,882)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,012,757)AP 26/27 Jade: Earned 10,000,000 credits (15,547,126)GFN Sapphire: Earned 20,000,000 credits (23,327,657)PSA Ruby: Earned 2,000,000 credits (2,939,755)
Message 119754 - Posted: 6 Aug 2018 | 17:17:42 UTC - in response to Message 119753.

Interesting... your 4p x 1t is what I considered the optimal situation, but you got 4.4% more ppd on 4p x 2t. I don't have extensive or recent Linux experience but when I last looked at it, I think its scheduler did a better job than Windows.

On that note, I had seen hints of up to 2% improvement when using HT, but I decided that wasn't significant, and even if correct wasn't enough to offset the extra power it took. I never measured that power difference, but it was 10C hotter on the core on the system I was using. That is significant.

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321 LLR Jade: Earned 10,000,000 credits (14,356,260)Cullen LLR Turquoise: Earned 5,000,000 credits (5,331,463)ESP LLR Turquoise: Earned 5,000,000 credits (6,471,102)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,259,128)PPS LLR Ruby: Earned 2,000,000 credits (3,225,518)PSP LLR Jade: Earned 10,000,000 credits (11,359,246)SoB LLR Jade: Earned 10,000,000 credits (17,891,611)SR5 LLR Turquoise: Earned 5,000,000 credits (6,150,877)SGS LLR Ruby: Earned 2,000,000 credits (2,155,650)TRP LLR Ruby: Earned 2,000,000 credits (2,226,756)Woodall LLR Turquoise: Earned 5,000,000 credits (6,588,005)Generalized Cullen/Woodall Sieve Jade: Earned 10,000,000 credits (11,205,264)PPS Sieve Double Bronze: Earned 100,000,000 credits (175,160,531)GFN Amethyst: Earned 1,000,000 credits (1,146,417)
Message 119756 - Posted: 6 Aug 2018 | 18:31:20 UTC - in response to Message 119753.

xii5ku wrote:
number of simultaneous tasks x number of tasks per process

correction: number of simultaneous tasks x number of threads per process

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321 LLR Jade: Earned 10,000,000 credits (14,356,260)Cullen LLR Turquoise: Earned 5,000,000 credits (5,331,463)ESP LLR Turquoise: Earned 5,000,000 credits (6,471,102)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,259,128)PPS LLR Ruby: Earned 2,000,000 credits (3,225,518)PSP LLR Jade: Earned 10,000,000 credits (11,359,246)SoB LLR Jade: Earned 10,000,000 credits (17,891,611)SR5 LLR Turquoise: Earned 5,000,000 credits (6,150,877)SGS LLR Ruby: Earned 2,000,000 credits (2,155,650)TRP LLR Ruby: Earned 2,000,000 credits (2,226,756)Woodall LLR Turquoise: Earned 5,000,000 credits (6,588,005)Generalized Cullen/Woodall Sieve Jade: Earned 10,000,000 credits (11,205,264)PPS Sieve Double Bronze: Earned 100,000,000 credits (175,160,531)GFN Amethyst: Earned 1,000,000 credits (1,146,417)
Message 119758 - Posted: 6 Aug 2018 | 20:35:31 UTC - in response to Message 119754.

mackerel wrote:
On that note, I had seen hints of up to 2% improvement when using HT, but I decided that wasn't significant, and even if correct wasn't enough to offset the extra power it took. I never measured that power difference, but it was 10C hotter on the core on the system I was using. That is significant.

Yes, power efficiency goes down when HT is used.
Same i7 7700K, with two idle Pascal GPUs, whole system power measured:
    idle: 50 W
    4p x 1t: 38,300 points/d / 137 W = 3.24 points/kJ
    4p x 2t: 40,000 points/d / 145 W = 3.19 points/kJ

Of course the 7700K with the clock that I drive it at is far from power efficient to begin with. (The host was built to run GPU projects, not CPU projects.)

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321 LLR Jade: Earned 10,000,000 credits (14,356,260)Cullen LLR Turquoise: Earned 5,000,000 credits (5,331,463)ESP LLR Turquoise: Earned 5,000,000 credits (6,471,102)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,259,128)PPS LLR Ruby: Earned 2,000,000 credits (3,225,518)PSP LLR Jade: Earned 10,000,000 credits (11,359,246)SoB LLR Jade: Earned 10,000,000 credits (17,891,611)SR5 LLR Turquoise: Earned 5,000,000 credits (6,150,877)SGS LLR Ruby: Earned 2,000,000 credits (2,155,650)TRP LLR Ruby: Earned 2,000,000 credits (2,226,756)Woodall LLR Turquoise: Earned 5,000,000 credits (6,588,005)Generalized Cullen/Woodall Sieve Jade: Earned 10,000,000 credits (11,205,264)PPS Sieve Double Bronze: Earned 100,000,000 credits (175,160,531)GFN Amethyst: Earned 1,000,000 credits (1,146,417)
Message 119763 - Posted: 7 Aug 2018 | 15:03:59 UTC - in response to Message 119750.
Last modified: 7 Aug 2018 | 15:05:58 UTC

xii5ku wrote:
mackerel wrote:
There are a number of different "k" values being tested. Even when at a similar size, it can end up working differently. I kinda brute force around it. Do a large enough sample, and take the median. Less controlled than running the same task, but I find it good enough within a couple % or so.

Right; I didn't explore the current range of available PPS-LLR WUs. Something I should look into in future testing.

BTW, looking back at notes that I made during the SR5-LLR challenge, I saw two different FFT lengths being chosen by llr/gwnum for different WUs that I received during that challenge (probably on hosts with same hardware architecture, if not even on the same host, but my notes are not clear on that). In light of this, your suggestion to try to cover the current range of varying WUs in some way in the test setup definitely has merit.

At the other end of the spectrum of test regimes, I have seen proponents of very short and quick prime95/gwnum test cases --- instead of long running llr/gwnum test cases with input from PrimeGrid --- but setting prime95 to the same FFT length as seen with PrimeGrid's WUs. I haven't looked closer into this approach yet, but I see potential for certain systematic errors in it.

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Discovered 2 mega primesEliminated 1 conjecture "k"Found 3 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (7,124,499)Cullen LLR Turquoise: Earned 5,000,000 credits (5,149,818)ESP LLR Turquoise: Earned 5,000,000 credits (5,439,896)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (3,220,326)PPS LLR Sapphire: Earned 20,000,000 credits (35,828,991)PSP LLR Jade: Earned 10,000,000 credits (10,128,604)SoB LLR Jade: Earned 10,000,000 credits (10,478,064)SR5 LLR Jade: Earned 10,000,000 credits (16,848,073)SGS LLR Turquoise: Earned 5,000,000 credits (6,702,766)TPS LLR (retired) Bronze: Earned 10,000 credits (34,130)TRP LLR Turquoise: Earned 5,000,000 credits (8,739,858)Woodall LLR Ruby: Earned 2,000,000 credits (4,479,410)321 Sieve (suspended) Silver: Earned 100,000 credits (203,937)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,383,853)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (20,281,267)PPS Sieve Emerald: Earned 50,000,000 credits (74,140,875)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,293,882)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,012,757)AP 26/27 Jade: Earned 10,000,000 credits (15,547,126)GFN Sapphire: Earned 20,000,000 credits (23,327,657)PSA Ruby: Earned 2,000,000 credits (2,939,755)
Message 119772 - Posted: 7 Aug 2018 | 22:42:47 UTC - in response to Message 119763.

Prime95 does have a benchmark mode, and the interface in 29.x makes it easier to use than before. You can choose FFT lengths, thread and worker configurations, HT or not, and "complex FFTs". I don't know what the last one is, but I saw somewhere that might give more representative results for non-mersenne uses like LLR.

I have used it to build an observation model of how hardware works under various scenarios, but for sure there will be variables I have not accounted for, so it doesn't always match "real" PrimeGrid task behavior. While I'm fairly confident in the use case on quad core, maybe 6 core consumer level Intel CPUs, I'm less sure on Ryzen (CCX, infinity fabric, exclusive cache), Skylake-X (non-inclusive mesh cache), multi-socket configuration (NUMA or not), and any other high core count system (>8 or so).

As a rule of thumb, best throughput seems to be when the L3 cache (assuming inclusive) is filled but not exceeded by the running task(s).

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Message 119795 - Posted: 8 Aug 2018 | 19:54:19 UTC
Last modified: 8 Aug 2018 | 20:00:17 UTC

Hot in heels of completing my GCW-sieve goals, I have had a string of invalid single core SGS tasks when the number of active Ryzen cores are greater than 4. Going back in time I remember 8 core multithreaded ESP tasks that got invalidated after completing them. This was around the time LLR 8.01 was implemented. While gaming and other desktop apps I have no problem with 4 cores active and feeding 2 GPUs with PPS-sieve.

I do know about Ryzens split AVX units / halved throughput. Anyway, with the upcoming challenge, Ryzen users beware.

The system is a Ryzen 1700@stock 3,2 GHz with 2x8 GB 3200 MHz (XMP) CL16-18-18-38.

Awaiting another sieve project patiently.

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Discovered 2 mega primesEliminated 1 conjecture "k"Found 3 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (7,124,499)Cullen LLR Turquoise: Earned 5,000,000 credits (5,149,818)ESP LLR Turquoise: Earned 5,000,000 credits (5,439,896)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (3,220,326)PPS LLR Sapphire: Earned 20,000,000 credits (35,828,991)PSP LLR Jade: Earned 10,000,000 credits (10,128,604)SoB LLR Jade: Earned 10,000,000 credits (10,478,064)SR5 LLR Jade: Earned 10,000,000 credits (16,848,073)SGS LLR Turquoise: Earned 5,000,000 credits (6,702,766)TPS LLR (retired) Bronze: Earned 10,000 credits (34,130)TRP LLR Turquoise: Earned 5,000,000 credits (8,739,858)Woodall LLR Ruby: Earned 2,000,000 credits (4,479,410)321 Sieve (suspended) Silver: Earned 100,000 credits (203,937)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,383,853)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (20,281,267)PPS Sieve Emerald: Earned 50,000,000 credits (74,140,875)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,293,882)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,012,757)AP 26/27 Jade: Earned 10,000,000 credits (15,547,126)GFN Sapphire: Earned 20,000,000 credits (23,327,657)PSA Ruby: Earned 2,000,000 credits (2,939,755)
Message 119807 - Posted: 9 Aug 2018 | 13:25:25 UTC - in response to Message 119795.

While the Ryzen FPU might be comparatively slower than Intel's, it doesn't mean it will give errors if you push it. Double check there isn't another problem elsewhere that might be contributing...

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Message 119814 - Posted: 9 Aug 2018 | 20:19:28 UTC - in response to Message 119807.

I stand corrected. Dropped down to 2666MHz (offical suported speed on Taichi), worked my way up to 3066MHz, so far stable and no inconclusives. 3200 MHz gave me hardship with LLR, but worked fine with sieving.

Just a side note, Asrock BIOS releases seem to be hit or miss lately, citing the PC community. I'm on 4.70.

Other factors like heat are definitely not a problem.

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321 LLR Jade: Earned 10,000,000 credits (17,176,440)Cullen LLR Gold: Earned 500,000 credits (533,200)ESP LLR Silver: Earned 100,000 credits (314,648)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (67,663)PPS LLR Gold: Earned 500,000 credits (896,022)PSP LLR Gold: Earned 500,000 credits (719,124)SoB LLR Silver: Earned 100,000 credits (325,452)SR5 LLR Amethyst: Earned 1,000,000 credits (1,003,678)SGS LLR Silver: Earned 100,000 credits (128,562)TRP LLR Silver: Earned 100,000 credits (297,460)Woodall LLR Silver: Earned 100,000 credits (344,162)Generalized Cullen/Woodall Sieve Amethyst: Earned 1,000,000 credits (1,064,320)PPS Sieve Emerald: Earned 50,000,000 credits (61,439,846)AP 26/27 Gold: Earned 500,000 credits (578,149)GFN Sapphire: Earned 20,000,000 credits (28,939,558)PSA Emerald: Earned 50,000,000 credits (55,346,119)
Message 119821 - Posted: 10 Aug 2018 | 8:37:54 UTC
Last modified: 10 Aug 2018 | 8:40:13 UTC

Here's quick tests on my 8700K:


It seems running 3 tasks on 2 cores each is the sweet spot for PPS.

6 tasks on 1 core and 2 tasks on 3 cores are practically tied; 6 tasks runs a bit faster overall but 2 tasks use a little less CPU time.

Dad
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Discovered 1 mega prime321 LLR Gold: Earned 500,000 credits (503,707)Cullen LLR Gold: Earned 500,000 credits (714,948)ESP LLR Gold: Earned 500,000 credits (502,172)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (524,042)PPS LLR Turquoise: Earned 5,000,000 credits (5,188,923)PSP LLR Gold: Earned 500,000 credits (540,370)SoB LLR Gold: Earned 500,000 credits (642,245)SR5 LLR Gold: Earned 500,000 credits (511,202)SGS LLR Gold: Earned 500,000 credits (694,456)TRP LLR Gold: Earned 500,000 credits (519,598)Woodall LLR Gold: Earned 500,000 credits (514,421)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (7,959,011)PPS Sieve Sapphire: Earned 20,000,000 credits (22,258,713)AP 26/27 Gold: Earned 500,000 credits (836,901)GFN Sapphire: Earned 20,000,000 credits (49,396,070)
Message 119823 - Posted: 10 Aug 2018 | 9:33:23 UTC

Love these challenges - another drop down to SGS prior to the challenge and another prime found ;)

Dad
____________


Tonight's lucky number is 555*2^3563328+1 (PPS-MEGA)

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Discovered 4 mega primesEliminated 3 conjecture "k"sFound 2 primes in the 2018 Tour de PrimesFound 1 prime in the 2018 Tour de Primes Mountain Stage321 LLR Sapphire: Earned 20,000,000 credits (23,715,270)Cullen LLR Sapphire: Earned 20,000,000 credits (25,424,693)ESP LLR Sapphire: Earned 20,000,000 credits (22,668,198)Generalized Cullen/Woodall LLR Sapphire: Earned 20,000,000 credits (21,044,302)PPS LLR Emerald: Earned 50,000,000 credits (63,413,280)PSP LLR Sapphire: Earned 20,000,000 credits (23,462,639)SoB LLR Emerald: Earned 50,000,000 credits (58,594,951)SR5 LLR Emerald: Earned 50,000,000 credits (50,308,578)SGS LLR Sapphire: Earned 20,000,000 credits (22,589,490)TPS LLR (retired) Bronze: Earned 10,000 credits (43,033)TRP LLR Emerald: Earned 50,000,000 credits (51,404,601)Woodall LLR Sapphire: Earned 20,000,000 credits (24,208,300)321 Sieve (suspended) Ruby: Earned 2,000,000 credits (4,024,795)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,142,109)Generalized Cullen/Woodall Sieve Emerald: Earned 50,000,000 credits (50,500,029)PPS Sieve Double Gold: Earned 500,000,000 credits (504,377,255)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,288,222)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,149,354)AP 26/27 Emerald: Earned 50,000,000 credits (51,622,631)GFN Double Gold: Earned 500,000,000 credits (571,043,786)PSA Double Gold: Earned 500,000,000 credits (529,121,640)
Message 119827 - Posted: 10 Aug 2018 | 10:50:29 UTC - in response to Message 119821.
Last modified: 10 Aug 2018 | 11:21:54 UTC

Here's quick tests on my 8700K:
...
It seems running 3 tasks on 2 cores each is the sweet spot for PPS.

6 tasks on 1 core and 2 tasks on 3 cores are practically tied; 6 tasks runs a bit faster overall but 2 tasks use a little less CPU time.


Well, i7 8700K, HT off, 4x8GB DDR4-2133.
Times are as follow, testing a recent prime 1071*2^2609316+1
Column: 1 - Cores, 2- Tasks, 3 - Average times per task, 4 - Tasks per hour
1 ˙6 ˙1450 ˙14,89
2 ˙3 ˙1030 ˙10,48
3 ˙2 ˙762 ˙9,44
4 ˙1 ˙486 ˙7,41
5 ˙1 ˙445˙8,09
6 ˙2 ˙484 ˙7,44

My home computer has a bit faster DDR4 and I expect a bit better times, but doing 6 tasks on 1 core is best option.
____________
My stats
Badge score: 1*1 + 5*2 + 8*9 + 9*6 + 12*3 = 173

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Discovered 2 mega primesEliminated 1 conjecture "k"Found 3 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (7,124,499)Cullen LLR Turquoise: Earned 5,000,000 credits (5,149,818)ESP LLR Turquoise: Earned 5,000,000 credits (5,439,896)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (3,220,326)PPS LLR Sapphire: Earned 20,000,000 credits (35,828,991)PSP LLR Jade: Earned 10,000,000 credits (10,128,604)SoB LLR Jade: Earned 10,000,000 credits (10,478,064)SR5 LLR Jade: Earned 10,000,000 credits (16,848,073)SGS LLR Turquoise: Earned 5,000,000 credits (6,702,766)TPS LLR (retired) Bronze: Earned 10,000 credits (34,130)TRP LLR Turquoise: Earned 5,000,000 credits (8,739,858)Woodall LLR Ruby: Earned 2,000,000 credits (4,479,410)321 Sieve (suspended) Silver: Earned 100,000 credits (203,937)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,383,853)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (20,281,267)PPS Sieve Emerald: Earned 50,000,000 credits (74,140,875)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,293,882)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,012,757)AP 26/27 Jade: Earned 10,000,000 credits (15,547,126)GFN Sapphire: Earned 20,000,000 credits (23,327,657)PSA Ruby: Earned 2,000,000 credits (2,939,755)
Message 119828 - Posted: 10 Aug 2018 | 11:12:33 UTC - in response to Message 119827.

On the last two 8700k results, if I assume the first one has HT on, it could be understandable. When running multi-thread at all, the scheduling seems to work better, but you may lose some performance from multi-thread scaling. One task per core with HT on can result in some loss of efficiency from scheduler unless you set affinity, or have HT turned off.

I haven't had time to test my 8086k on this at all and it will be set up at last minute when I get home from work...

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Credit: 169,174,402
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321 LLR Jade: Earned 10,000,000 credits (17,176,440)Cullen LLR Gold: Earned 500,000 credits (533,200)ESP LLR Silver: Earned 100,000 credits (314,648)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (67,663)PPS LLR Gold: Earned 500,000 credits (896,022)PSP LLR Gold: Earned 500,000 credits (719,124)SoB LLR Silver: Earned 100,000 credits (325,452)SR5 LLR Amethyst: Earned 1,000,000 credits (1,003,678)SGS LLR Silver: Earned 100,000 credits (128,562)TRP LLR Silver: Earned 100,000 credits (297,460)Woodall LLR Silver: Earned 100,000 credits (344,162)Generalized Cullen/Woodall Sieve Amethyst: Earned 1,000,000 credits (1,064,320)PPS Sieve Emerald: Earned 50,000,000 credits (61,439,846)AP 26/27 Gold: Earned 500,000 credits (578,149)GFN Sapphire: Earned 20,000,000 credits (28,939,558)PSA Emerald: Earned 50,000,000 credits (55,346,119)
Message 119830 - Posted: 10 Aug 2018 | 11:28:28 UTC - in response to Message 119827.

Hmm. I'm also running GFN and using the computer, so it might affect my results. I need to try running some more 1-core tasks to make my results more reliable. I have 2x8GB 3200 Mhz DDR4.

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Found 2 primes in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,008,573)Cullen LLR Turquoise: Earned 5,000,000 credits (5,005,909)ESP LLR Turquoise: Earned 5,000,000 credits (5,003,216)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (4,865,147)PPS LLR Ruby: Earned 2,000,000 credits (2,623,511)PSP LLR Ruby: Earned 2,000,000 credits (3,998,562)SoB LLR Turquoise: Earned 5,000,000 credits (8,031,952)SR5 LLR Ruby: Earned 2,000,000 credits (3,004,172)SGS LLR Ruby: Earned 2,000,000 credits (2,555,530)TRP LLR Ruby: Earned 2,000,000 credits (3,000,132)Woodall LLR Ruby: Earned 2,000,000 credits (2,970,590)Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (268,250)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (9,907,668)PPS Sieve Double Silver: Earned 200,000,000 credits (266,666,326)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,000,133)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,000,970)AP 26/27 Emerald: Earned 50,000,000 credits (90,017,395)GFN Emerald: Earned 50,000,000 credits (90,000,019)PSA Emerald: Earned 50,000,000 credits (90,000,001)
Message 119831 - Posted: 10 Aug 2018 | 11:56:51 UTC - in response to Message 119830.

Hmm. I'm also running GFN and using the computer, so it might affect my results. I need to try running some more 1-core tasks to make my results more reliable. I have 2x8GB 3200 Mhz DDR4.

I plan to pause AP27 to make sure I get absolute most out of the machines. They will not be in significant use.

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Credit: 169,174,402
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321 LLR Jade: Earned 10,000,000 credits (17,176,440)Cullen LLR Gold: Earned 500,000 credits (533,200)ESP LLR Silver: Earned 100,000 credits (314,648)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (67,663)PPS LLR Gold: Earned 500,000 credits (896,022)PSP LLR Gold: Earned 500,000 credits (719,124)SoB LLR Silver: Earned 100,000 credits (325,452)SR5 LLR Amethyst: Earned 1,000,000 credits (1,003,678)SGS LLR Silver: Earned 100,000 credits (128,562)TRP LLR Silver: Earned 100,000 credits (297,460)Woodall LLR Silver: Earned 100,000 credits (344,162)Generalized Cullen/Woodall Sieve Amethyst: Earned 1,000,000 credits (1,064,320)PPS Sieve Emerald: Earned 50,000,000 credits (61,439,846)AP 26/27 Gold: Earned 500,000 credits (578,149)GFN Sapphire: Earned 20,000,000 credits (28,939,558)PSA Emerald: Earned 50,000,000 credits (55,346,119)
Message 119834 - Posted: 10 Aug 2018 | 12:22:01 UTC

Haha, so there was apparently a windows update running during the 1-core tests :D

Here's the new results:



So, running each task on 1 physical core is the best. Sorry for misleading :P Always doubt all results!

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321 LLR Jade: Earned 10,000,000 credits (14,356,260)Cullen LLR Turquoise: Earned 5,000,000 credits (5,331,463)ESP LLR Turquoise: Earned 5,000,000 credits (6,471,102)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,259,128)PPS LLR Ruby: Earned 2,000,000 credits (3,225,518)PSP LLR Jade: Earned 10,000,000 credits (11,359,246)SoB LLR Jade: Earned 10,000,000 credits (17,891,611)SR5 LLR Turquoise: Earned 5,000,000 credits (6,150,877)SGS LLR Ruby: Earned 2,000,000 credits (2,155,650)TRP LLR Ruby: Earned 2,000,000 credits (2,226,756)Woodall LLR Turquoise: Earned 5,000,000 credits (6,588,005)Generalized Cullen/Woodall Sieve Jade: Earned 10,000,000 credits (11,205,264)PPS Sieve Double Bronze: Earned 100,000,000 credits (175,160,531)GFN Amethyst: Earned 1,000,000 credits (1,146,417)
Message 119839 - Posted: 10 Aug 2018 | 16:03:20 UTC
Last modified: 10 Aug 2018 | 16:28:35 UTC

I suppose most or all (other than myself) who are posting performance numbers here are testing with random WUs. However, nobody bothers to state their error of measurement (standard deviation for example), or alternatively how many tasks they measured and whether or not they waited for validation and normalized for credit/task.

(I did not state my error of measurement in post 119753 because the error is extremely low if a fixed WU is tested, the hardware is stable, and no other load is happening on the system.)

Some forget to state the operating system. (Was an OS with poor CPU scheduler used? Was a desktop used which runs face detection on your photo collection at random times? E.t.c.)

Performance reports which lack this type of data are of rather little value [edit:] because they may easily lead to wrong conclusions.

--------

mackerel wrote:
When running multi-thread at all, the scheduling seems to work better, but you may lose some performance from multi-thread scaling. One task per core with HT on can result in some loss of efficiency from scheduler unless you set affinity, or have HT turned off.

When you are telling people this, please don't forget to include that this only applies to Windows. Linux gets only a very small effect from this, about an order of magnitude below the error of measurement that occurs when random WUs are chosen.

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321 LLR Amethyst: Earned 1,000,000 credits (1,049,101)Cullen LLR Amethyst: Earned 1,000,000 credits (1,065,659)ESP LLR Amethyst: Earned 1,000,000 credits (1,377,236)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,001,786)PPS LLR Amethyst: Earned 1,000,000 credits (1,892,368)PSP LLR Amethyst: Earned 1,000,000 credits (1,076,339)SoB LLR Turquoise: Earned 5,000,000 credits (5,271,974)SR5 LLR Amethyst: Earned 1,000,000 credits (1,231,683)SGS LLR Amethyst: Earned 1,000,000 credits (1,108,426)TRP LLR Ruby: Earned 2,000,000 credits (2,318,534)Woodall LLR Amethyst: Earned 1,000,000 credits (1,286,703)321 Sieve (suspended) Bronze: Earned 10,000 credits (44,377)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,967,439)Generalized Cullen/Woodall Sieve Amethyst: Earned 1,000,000 credits (1,818,632)PPS Sieve Double Silver: Earned 200,000,000 credits (207,842,065)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Gold: Earned 500,000 credits (627,444)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (3,956,401)AP 26/27 Jade: Earned 10,000,000 credits (13,903,464)GFN Emerald: Earned 50,000,000 credits (55,473,663)PSA Emerald: Earned 50,000,000 credits (86,957,147)
Message 119847 - Posted: 10 Aug 2018 | 18:02:30 UTC

and now to something completly different: GO! GO! GO!
Happy Challenge :)
____________
Sysadm@Nbg
my current lucky number: 3299*2^1441747+1
PSA-PRPNet-Stats-URL: http://u-g-f.de/PRPNet/

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321 LLR Silver: Earned 100,000 credits (128,268)Cullen LLR Silver: Earned 100,000 credits (348,081)ESP LLR Silver: Earned 100,000 credits (120,080)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (165,966)PPS LLR Amethyst: Earned 1,000,000 credits (1,904,839)PSP LLR Silver: Earned 100,000 credits (125,952)SoB LLR Bronze: Earned 10,000 credits (32,684)SR5 LLR Gold: Earned 500,000 credits (710,852)SGS LLR Silver: Earned 100,000 credits (108,724)TRP LLR Gold: Earned 500,000 credits (555,325)Woodall LLR Silver: Earned 100,000 credits (269,933)Generalized Cullen/Woodall Sieve Gold: Earned 500,000 credits (502,930)PPS Sieve Bronze: Earned 10,000 credits (26,968)AP 26/27 Silver: Earned 100,000 credits (145,548)GFN Bronze: Earned 10,000 credits (12,655)
Message 119849 - Posted: 10 Aug 2018 | 18:16:53 UTC
Last modified: 10 Aug 2018 | 18:17:22 UTC

Partial solar eclipses never get as much media attention (or scientific study/viewing!) as the full or annular eclipses. Does anyone live near enough to catch a view? There's also the yearly Perseid meteor showers tonight.

https://en.wikipedia.org/wiki/Solar_eclipse_of_August_11,_2018
https://en.wikipedia.org/wiki/Perseids

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Found 1 prime in the 2018 Tour de Primes321 LLR Gold: Earned 500,000 credits (738,429)Cullen LLR Gold: Earned 500,000 credits (700,934)ESP LLR Gold: Earned 500,000 credits (504,298)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (263,408)PPS LLR Gold: Earned 500,000 credits (747,721)PSP LLR Amethyst: Earned 1,000,000 credits (1,045,856)SoB LLR Ruby: Earned 2,000,000 credits (2,581,729)SR5 LLR Silver: Earned 100,000 credits (288,101)SGS LLR Silver: Earned 100,000 credits (202,162)TRP LLR Gold: Earned 500,000 credits (521,592)Woodall LLR Gold: Earned 500,000 credits (862,979)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (4,914,720)PPS Sieve Sapphire: Earned 20,000,000 credits (33,939,228)TRP Sieve (suspended) Silver: Earned 100,000 credits (156,305)AP 26/27 Gold: Earned 500,000 credits (650,923)GFN Sapphire: Earned 20,000,000 credits (29,935,811)
Message 119850 - Posted: 10 Aug 2018 | 18:18:33 UTC

And BOINC@MIXI had the best start!

Have a fun race, everyone. :-)
____________
Greetings, Jens

32987968^65536+1

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Found 2 primes in the 2018 Tour de Primes321 LLR Gold: Earned 500,000 credits (509,666)Cullen LLR Gold: Earned 500,000 credits (508,598)ESP LLR Gold: Earned 500,000 credits (506,993)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (511,805)PPS LLR Ruby: Earned 2,000,000 credits (3,672,211)PSP LLR Gold: Earned 500,000 credits (564,299)SoB LLR Amethyst: Earned 1,000,000 credits (1,286,750)SR5 LLR Amethyst: Earned 1,000,000 credits (1,129,594)SGS LLR Amethyst: Earned 1,000,000 credits (1,053,398)TRP LLR Amethyst: Earned 1,000,000 credits (1,014,760)Woodall LLR Gold: Earned 500,000 credits (534,758)Generalized Cullen/Woodall Sieve Gold: Earned 500,000 credits (549,353)PPS Sieve Emerald: Earned 50,000,000 credits (57,354,194)AP 26/27 Jade: Earned 10,000,000 credits (16,228,602)GFN Jade: Earned 10,000,000 credits (16,472,987)
Message 119859 - Posted: 10 Aug 2018 | 21:27:56 UTC


____________
"Accidit in puncto, quod non contingit in anno."
Something that does not occur in a year may, perchance, happen in a moment.

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321 LLR Bronze: Earned 10,000 credits (48,835)Cullen LLR Bronze: Earned 10,000 credits (98,851)ESP LLR Bronze: Earned 10,000 credits (13,226)PPS LLR Amethyst: Earned 1,000,000 credits (1,514,074)SoB LLR Silver: Earned 100,000 credits (132,293)SR5 LLR Bronze: Earned 10,000 credits (16,010)TRP LLR Bronze: Earned 10,000 credits (14,746)Woodall LLR Silver: Earned 100,000 credits (109,455)PSA Turquoise: Earned 5,000,000 credits (7,614,290)
Message 119879 - Posted: 11 Aug 2018 | 17:38:38 UTC - in response to Message 119849.

Partial solar eclipses never get as much media attention (or scientific study/viewing!) as the full or annular eclipses. Does anyone live near enough to catch a view? There's also the yearly Perseid meteor showers tonight.

https://en.wikipedia.org/wiki/Solar_eclipse_of_August_11,_2018
https://en.wikipedia.org/wiki/Perseids

Maybe some photos will appear at https://commons.wikimedia.org/wiki/Category:Solar_eclipse_of_2018_August_11. /JeppeSN

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321 LLR Bronze: Earned 10,000 credits (48,835)Cullen LLR Bronze: Earned 10,000 credits (98,851)ESP LLR Bronze: Earned 10,000 credits (13,226)PPS LLR Amethyst: Earned 1,000,000 credits (1,514,074)SoB LLR Silver: Earned 100,000 credits (132,293)SR5 LLR Bronze: Earned 10,000 credits (16,010)TRP LLR Bronze: Earned 10,000 credits (14,746)Woodall LLR Silver: Earned 100,000 credits (109,455)PSA Turquoise: Earned 5,000,000 credits (7,614,290)
Message 119880 - Posted: 11 Aug 2018 | 17:46:37 UTC

Any bets how many primes will be found during this short challenge? (A prime is counted if the task that first returned the prime result, is included in the challenge.) /JeppeSN

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Discovered 7 mega primesEliminated 2 conjecture "k"sDiscovered 2 AP26sDiscovered 1 twin prime2017 Tour de Primes highest prime count2017 Tour de Primes most Mountain Stage primes2018 Tour de Primes most Mountain Stage primesFound 4 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de PrimesFound 4 primes in the 2018 Tour de Primes Mountain StageFound 1 mega prime in the 2018 Tour de Primes Mountain Stage321 LLR Emerald: Earned 50,000,000 credits (52,964,603)Cullen LLR Emerald: Earned 50,000,000 credits (58,024,172)ESP LLR Emerald: Earned 50,000,000 credits (53,384,998)Generalized Cullen/Woodall LLR Emerald: Earned 50,000,000 credits (66,494,087)PPS LLR Emerald: Earned 50,000,000 credits (95,388,294)PSP LLR Emerald: Earned 50,000,000 credits (51,603,689)SoB LLR Double Bronze: Earned 100,000,000 credits (149,233,140)SR5 LLR Emerald: Earned 50,000,000 credits (52,541,942)SGS LLR Emerald: Earned 50,000,000 credits (54,944,236)TRP LLR Double Bronze: Earned 100,000,000 credits (104,761,181)Woodall LLR Emerald: Earned 50,000,000 credits (58,524,457)321 Sieve (suspended) Ruby: Earned 2,000,000 credits (2,031,883)Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (30,879,764)Generalized Cullen/Woodall Sieve Double Bronze: Earned 100,000,000 credits (100,428,955)PPS Sieve Double Ruby: Earned 2,000,000,000 credits (3,008,139,439)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Double Bronze: Earned 100,000,000 credits (101,857,516)TRP Sieve (suspended) Emerald: Earned 50,000,000 credits (50,936,081)AP 26/27 Double Gold: Earned 500,000,000 credits (650,538,915)GFN Double Ruby: Earned 2,000,000,000 credits (2,412,218,059)PSA Double Ruby: Earned 2,000,000,000 credits (4,313,275,040)
Message 119882 - Posted: 11 Aug 2018 | 18:31:39 UTC - in response to Message 119880.

Any bets how many primes will be found during this short challenge? (A prime is counted if the task that first returned the prime result, is included in the challenge.) /JeppeSN


I'll go with 2.
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321 LLR Turquoise: Earned 5,000,000 credits (5,002,392)Cullen LLR Ruby: Earned 2,000,000 credits (2,525,919)ESP LLR Turquoise: Earned 5,000,000 credits (5,007,212)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,599,077)PPS LLR Ruby: Earned 2,000,000 credits (2,404,534)PSP LLR Turquoise: Earned 5,000,000 credits (5,037,379)SoB LLR Turquoise: Earned 5,000,000 credits (5,017,796)SR5 LLR Ruby: Earned 2,000,000 credits (2,899,782)SGS LLR Amethyst: Earned 1,000,000 credits (1,074,845)TRP LLR Turquoise: Earned 5,000,000 credits (5,009,956)Woodall LLR Ruby: Earned 2,000,000 credits (2,825,380)321 Sieve (suspended) Bronze: Earned 10,000 credits (32,205)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,323,773)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (3,076,904)PPS Sieve Emerald: Earned 50,000,000 credits (66,241,969)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,081,558)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,180,919)AP 26/27 Jade: Earned 10,000,000 credits (12,393,111)GFN Double Silver: Earned 200,000,000 credits (295,250,253)
Message 119883 - Posted: 11 Aug 2018 | 19:18:46 UTC

Hello!
My guess:

I hope we will find 4 and I'll catch one of them!

Still searching for a Mega Prime!!
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Credit: 612,928,055
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Found 2 primes in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,008,573)Cullen LLR Turquoise: Earned 5,000,000 credits (5,005,909)ESP LLR Turquoise: Earned 5,000,000 credits (5,003,216)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (4,865,147)PPS LLR Ruby: Earned 2,000,000 credits (2,623,511)PSP LLR Ruby: Earned 2,000,000 credits (3,998,562)SoB LLR Turquoise: Earned 5,000,000 credits (8,031,952)SR5 LLR Ruby: Earned 2,000,000 credits (3,004,172)SGS LLR Ruby: Earned 2,000,000 credits (2,555,530)TRP LLR Ruby: Earned 2,000,000 credits (3,000,132)Woodall LLR Ruby: Earned 2,000,000 credits (2,970,590)Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (268,250)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (9,907,668)PPS Sieve Double Silver: Earned 200,000,000 credits (266,666,326)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,000,133)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,000,970)AP 26/27 Emerald: Earned 50,000,000 credits (90,017,395)GFN Emerald: Earned 50,000,000 credits (90,000,019)PSA Emerald: Earned 50,000,000 credits (90,000,001)
Message 119886 - Posted: 11 Aug 2018 | 20:21:46 UTC

I have not a scooby-diddly-dumplings.

1 maybe, in the last hour.

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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,504,899)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (2,001,789)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,004,898)PPS LLR Ruby: Earned 2,000,000 credits (2,082,200)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (24,467,444)SR5 LLR Turquoise: Earned 5,000,000 credits (7,216,756)SGS LLR Ruby: Earned 2,000,000 credits (2,010,466)TRP LLR Ruby: Earned 2,000,000 credits (2,433,520)Woodall LLR Amethyst: Earned 1,000,000 credits (1,920,417)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,804,369)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (6,499,818)GFN Emerald: Earned 50,000,000 credits (52,696,314)PSA Jade: Earned 10,000,000 credits (10,038,118)
Message 119888 - Posted: 11 Aug 2018 | 21:27:33 UTC - in response to Message 119880.

Any bets how many primes will be found during this short challenge? (A prime is counted if the task that first returned the prime result, is included in the challenge.) /JeppeSN


We actually started betting on this yesterday in Discord. My vote was 5. There's 2 so far.

Actually, there's one more. So there's 3 now.

____________
Please do not PM me with support questions. They will usually go unanswered. Ask on the forums instead. Thank you!

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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,504,899)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (2,001,789)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,004,898)PPS LLR Ruby: Earned 2,000,000 credits (2,082,200)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (24,467,444)SR5 LLR Turquoise: Earned 5,000,000 credits (7,216,756)SGS LLR Ruby: Earned 2,000,000 credits (2,010,466)TRP LLR Ruby: Earned 2,000,000 credits (2,433,520)Woodall LLR Amethyst: Earned 1,000,000 credits (1,920,417)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,804,369)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (6,499,818)GFN Emerald: Earned 50,000,000 credits (52,696,314)PSA Jade: Earned 10,000,000 credits (10,038,118)
Message 119889 - Posted: 11 Aug 2018 | 21:30:07 UTC

After 1+ days:

Challenge: Solar Eclipse
App: 10 (PPS-LLR)
(As of 2018-08-11 21:28:52 UTC)

238411 tasks have been sent out. [CPU/GPU/anonymous_platform: 238148 (100%) / 0 (0%) / 263 (0%)]

Of those tasks that have been sent out:

4311 (2%) came back with some kind of an error. [4311 (2%) / 0 (0%) / 0 (0%)]
148384 (62%) have returned a successful result. [148131 (62%) / 0 (0%) / 257 (0%)]
85727 (36%) are still in progress. [85723 (36%) / 0 (0%) / 6 (0%)]

Of the tasks that have been returned successfully:

51525 (35%) are pending validation. [51439 (35%) / 0 (0%) / 90 (0%)]
96791 (65%) have been successfully validated. [96624 (65%) / 0 (0%) / 167 (0%)]
40 (0%) were invalid. [40 (0%) / 0 (0%) / 0 (0%)]
28 (0%) are inconclusive. [28 (0%) / 0 (0%) / 0 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is n=2625781. The leading edge was at n=2616900 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 0.34% as much as it had prior to the challenge!

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Please do not PM me with support questions. They will usually go unanswered. Ask on the forums instead. Thank you!

My lucky number is 75898^524288+1

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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,504,899)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (2,001,789)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,004,898)PPS LLR Ruby: Earned 2,000,000 credits (2,082,200)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (24,467,444)SR5 LLR Turquoise: Earned 5,000,000 credits (7,216,756)SGS LLR Ruby: Earned 2,000,000 credits (2,010,466)TRP LLR Ruby: Earned 2,000,000 credits (2,433,520)Woodall LLR Amethyst: Earned 1,000,000 credits (1,920,417)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,804,369)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (6,499,818)GFN Emerald: Earned 50,000,000 credits (52,696,314)PSA Jade: Earned 10,000,000 credits (10,038,118)
Message 119890 - Posted: 12 Aug 2018 | 7:45:45 UTC - in response to Message 119888.
Last modified: 12 Aug 2018 | 7:50:01 UTC

Any bets how many primes will be found during this short challenge? (A prime is counted if the task that first returned the prime result, is included in the challenge.) /JeppeSN


We actually started betting on this yesterday in Discord. My vote was 5. There's 2 so far.

Actually, there's one more. So there's 3 now.


Make that 4 primes.

My guess of 5 may have been a bit pessimistic.

EDIT: I missed one. We're up to 5.
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PPS LLR Bronze: Earned 10,000 credits (44,463)Generalized Cullen/Woodall Sieve Silver: Earned 100,000 credits (235,338)PPS Sieve Silver: Earned 100,000 credits (111,243)GFN Gold: Earned 500,000 credits (696,700)
Message 119892 - Posted: 12 Aug 2018 | 13:04:48 UTC - in response to Message 119699.

So a couple days ago I decided to switch to PPS LLR in preparation for the challenge. The throughput of PPS was rather uninspiring compared to the other projects I had been running. So I decided to look at how I was running PPS and did some quick testing on both my i5-4670 (DDR3-1600) and my i7-4790 (DDR3-1600). I started out with one task on four cores and was getting a lot of 1st's, but not a lot of total units done. So I tried two tasks on two cores each and found that while each unit was slower, overall throughput was higher. At that point I knew I had to try the traditional one task per core and see what happens. Then it only seemed prudent to run all three conditions on both CPUs to see if there was a difference.

These tests were all run using live units and the times are visually taken from the BOINC manager. So please take these results with more than a few grains of salt. haha

i7-4790 DDR3-1600 PPS LLR runtimes

Per Unit:
4c 1t = 10 minutes
2c 2t = 17 minutes
1c 4t = 37 minutes

Per two units:
4c 1t = 20 minutes
2c 2t = 17 minutes
1c 4t = 37 minutes

Per four units:
4c 1t = 40 minutes
2c 2t = 34 minutes
1c 4t = 37 minutes

i5-4670 DDR3-1600 PPS LLR runtimes

Per unit:
4c 1t = 10 minutes
2c 2t = 17 minutes
1c 4t = 40 minutes

Per two units:
4c 1t = 20 minutes
2c 2t = 17 minutes
1c 4t = 40 minutes

Per four units:
4c 1t = 40 minutes
2c 2t = 34 minutes
1c 4t = 40 minutes

PPS runs remarkably similarly on the two CPUs when running one or two tasks at a time. Bump up to four tasks at a time and the i5 starts to fall off.

If you have a Haswell CPU it looks like the best for speed is one task on four cores and if you want the best throughput it looks like the best is two tasks on two cores each.

Running four tasks at once was all around bad on both. It had the slowest speed per unit, lowest or second lowest throughput, and had the highest CPU temperature.

Different CPU families and different RAM speeds will drastically alter these results.

May whoever reads this find it informative or inspiring.
Happy prime finding!


How do you go about changing how many tasks per core or how many cores per task (however its setup)?
I'm interested because I never knew you could change those values and I have a laptop with an i7-7700hq that runs extremely slow on task when it is useing all 8 cores.

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Discovered the World's First GFN-20 prime!!!Discovered 2 mega primesFound 1 prime in the 2018 Tour de Primes321 LLR Sapphire: Earned 20,000,000 credits (20,089,185)Cullen LLR Sapphire: Earned 20,000,000 credits (21,163,640)ESP LLR Sapphire: Earned 20,000,000 credits (20,089,407)Generalized Cullen/Woodall LLR Sapphire: Earned 20,000,000 credits (20,037,992)PPS LLR Sapphire: Earned 20,000,000 credits (20,999,495)PSP LLR Sapphire: Earned 20,000,000 credits (20,117,197)SoB LLR Sapphire: Earned 20,000,000 credits (21,208,789)SR5 LLR Sapphire: Earned 20,000,000 credits (20,278,667)SGS LLR Sapphire: Earned 20,000,000 credits (20,055,153)TRP LLR Sapphire: Earned 20,000,000 credits (20,619,871)Woodall LLR Sapphire: Earned 20,000,000 credits (20,211,696)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (20,360,148)PPS Sieve Double Amethyst: Earned 1,000,000,000 credits (1,051,222,753)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,189,695)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,102,079)AP 26/27 Emerald: Earned 50,000,000 credits (51,669,540)GFN Double Ruby: Earned 2,000,000,000 credits (3,670,222,181)PSA Double Bronze: Earned 100,000,000 credits (192,254,621)
Message 119894 - Posted: 12 Aug 2018 | 13:31:24 UTC - in response to Message 119892.
Last modified: 12 Aug 2018 | 13:31:57 UTC



How do you go about changing how many tasks per core or how many cores per task (however its setup)?
I'm interested because I never knew you could change those values and I have a laptop with an i7-7700hq that runs extremely slow on task when it is useing all 8 cores.


One observation first-that is a 4 core processor, with 4 additional virtual cores (i.e. hyperthreading cores). You generally don't want to run LLR on HT cores, so either disable HT or run at most on 50% of cores.

To run multithreaded (dedicate multiple cores to a task), you need to use app_config.xml. Look under "Multi-threading optimisation instructions" in the "Welcome to the World Cup Challenge" for a brief primer. http://www.primegrid.com/forum_thread.php?id=8027&nowrap=true#118359 (there's probably a better post)

For an example of fairly comprehensive app_config file, http://www.primegrid.com/forum_thread.php?id=7589&nowrap=true#109750

Please note, I included "max_cpu" tag lines, when those are in fact unnecessary.

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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,504,899)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (2,001,789)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,004,898)PPS LLR Ruby: Earned 2,000,000 credits (2,082,200)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (24,467,444)SR5 LLR Turquoise: Earned 5,000,000 credits (7,216,756)SGS LLR Ruby: Earned 2,000,000 credits (2,010,466)TRP LLR Ruby: Earned 2,000,000 credits (2,433,520)Woodall LLR Amethyst: Earned 1,000,000 credits (1,920,417)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,804,369)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (6,499,818)GFN Emerald: Earned 50,000,000 credits (52,696,314)PSA Jade: Earned 10,000,000 credits (10,038,118)
Message 119896 - Posted: 12 Aug 2018 | 13:56:47 UTC

Now there's 6 primes.
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Credit: 268,521,088
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321 LLR Jade: Earned 10,000,000 credits (14,356,260)Cullen LLR Turquoise: Earned 5,000,000 credits (5,331,463)ESP LLR Turquoise: Earned 5,000,000 credits (6,471,102)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,259,128)PPS LLR Ruby: Earned 2,000,000 credits (3,225,518)PSP LLR Jade: Earned 10,000,000 credits (11,359,246)SoB LLR Jade: Earned 10,000,000 credits (17,891,611)SR5 LLR Turquoise: Earned 5,000,000 credits (6,150,877)SGS LLR Ruby: Earned 2,000,000 credits (2,155,650)TRP LLR Ruby: Earned 2,000,000 credits (2,226,756)Woodall LLR Turquoise: Earned 5,000,000 credits (6,588,005)Generalized Cullen/Woodall Sieve Jade: Earned 10,000,000 credits (11,205,264)PPS Sieve Double Bronze: Earned 100,000,000 credits (175,160,531)GFN Amethyst: Earned 1,000,000 credits (1,146,417)
Message 119909 - Posted: 12 Aug 2018 | 17:54:47 UTC - in response to Message 119894.
Last modified: 12 Aug 2018 | 18:24:29 UTC

Van Zimmerman wrote:
You generally don't want to run LLR on HT cores, so either disable HT or run at most on 50% of cores.

This information is outdated at best and should not be perpetuated.
Whether Hyperthreading is detrimental or beneficial for LLR depends on a number of factors:

  • the particular LLR based subproject
  • processor type, and (possibly, but if so, to a lesser degree) RAM performance
  • operating system
  • whether or not multithreading is used and set near to the optimum thread count for the given combination of the above factors
  • (edit) whether LLR is run exclusively or together with other workload

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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,504,899)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (2,001,789)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,004,898)PPS LLR Ruby: Earned 2,000,000 credits (2,082,200)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (24,467,444)SR5 LLR Turquoise: Earned 5,000,000 credits (7,216,756)SGS LLR Ruby: Earned 2,000,000 credits (2,010,466)TRP LLR Ruby: Earned 2,000,000 credits (2,433,520)Woodall LLR Amethyst: Earned 1,000,000 credits (1,920,417)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,804,369)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (6,499,818)GFN Emerald: Earned 50,000,000 credits (52,696,314)PSA Jade: Earned 10,000,000 credits (10,038,118)
Message 119910 - Posted: 12 Aug 2018 | 18:13:49 UTC
Last modified: 12 Aug 2018 | 18:16:07 UTC

After 2 days:


Challenge: Solar Eclipse
App: 10 (PPS-LLR)
(As of 2018-08-12 18:14:01 UTC)

372521 tasks have been sent out. [CPU/GPU/anonymous_platform: 372026 (100%) / 0 (0%) / 495 (0%)]

Of those tasks that have been sent out:

5793 (2%) came back with some kind of an error. [5793 (2%) / 0 (0%) / 0 (0%)]
277575 (75%) have returned a successful result. [277091 (74%) / 0 (0%) / 489 (0%)]
89211 (24%) are still in progress. [89202 (24%) / 0 (0%) / 6 (0%)]

Of the tasks that have been returned successfully:

63874 (23%) are pending validation. [63749 (23%) / 0 (0%) / 130 (0%)]
213520 (77%) have been successfully validated. [213161 (77%) / 0 (0%) / 359 (0%)]
117 (0%) were invalid. [117 (0%) / 0 (0%) / 0 (0%)]
64 (0%) are inconclusive. [64 (0%) / 0 (0%) / 0 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is n=2630853. The leading edge was at n=2616900 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 0.53% as much as it had prior to the challenge!


We're up to 8 primes.
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My lucky number is 75898^524288+1

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Posts: 23
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Credit: 268,521,088
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321 LLR Jade: Earned 10,000,000 credits (14,356,260)Cullen LLR Turquoise: Earned 5,000,000 credits (5,331,463)ESP LLR Turquoise: Earned 5,000,000 credits (6,471,102)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,259,128)PPS LLR Ruby: Earned 2,000,000 credits (3,225,518)PSP LLR Jade: Earned 10,000,000 credits (11,359,246)SoB LLR Jade: Earned 10,000,000 credits (17,891,611)SR5 LLR Turquoise: Earned 5,000,000 credits (6,150,877)SGS LLR Ruby: Earned 2,000,000 credits (2,155,650)TRP LLR Ruby: Earned 2,000,000 credits (2,226,756)Woodall LLR Turquoise: Earned 5,000,000 credits (6,588,005)Generalized Cullen/Woodall Sieve Jade: Earned 10,000,000 credits (11,205,264)PPS Sieve Double Bronze: Earned 100,000,000 credits (175,160,531)GFN Amethyst: Earned 1,000,000 credits (1,146,417)
Message 119913 - Posted: 12 Aug 2018 | 19:23:40 UTC - in response to Message 119892.
Last modified: 12 Aug 2018 | 19:31:37 UTC

DwightHoward2 wrote:
How do you go about changing how many tasks per core or how many cores per task (however its setup)?
I'm interested because I never knew you could change those values and I have a laptop with an i7-7700hq that runs extremely slow on task when it is useing all 8 cores.

See post 119753 for measurements of PPS-LLR with different thread counts on a desktop i7 7700K with Linux and good RAM. (Typo in this message: The #t figures give the number of threads per task. #p is the number of tasks running concurrently. The product of #p x #t is the number of logical CPUs that BOINC needs to be allowed to use for PPS-LLR.)

Minimum app_config.xml for the case that happened to be the measured host's optimum (2 threads per task, together with HT enabled, BOINC set to use 100 % CPUs, no other load on the host):
<app_config>
<app_version>
<app_name>llrPPS</app_name>
<cmdline>-t 2</cmdline>
<avg_ncpus>2</avg_ncpus>
</app_version>
</app_config>

After saving the file in the correct folder (C:\ProgramData\BOINC\projects\www.primegrid.com\ on most Windows hosts), I recommend to restart boinc-client.

Different hosts definitely have other optimum settings. However, the performance delta between optimum and next best settings is usually small, hence: no worries.

If that i7 7700K for which I reported throughput ran Windows instead of Linux, then the optimum might either be the same, or might be 1 thread per task, HT disabled in the BIOS, BOINC set to use 100 % CPUs, no other load on the host.

I have no idea how far your laptop differs from my desktop. First of all, computational performance of laptops is nowadays limited by the heat dissipation capacity of the cooling system. Second, do you have dual channel RAM in it? Many laptops are sold with single channel RAM per default. LLR benefits from RAM bandwidth. With single channel RAM, it is again possible that the optimum is 1 thread per task, HT disabled. But this is just a wild guess on my part.

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PPS LLR Bronze: Earned 10,000 credits (44,463)Generalized Cullen/Woodall Sieve Silver: Earned 100,000 credits (235,338)PPS Sieve Silver: Earned 100,000 credits (111,243)GFN Gold: Earned 500,000 credits (696,700)
Message 119920 - Posted: 13 Aug 2018 | 5:55:42 UTC - in response to Message 119913.


I have no idea how far your laptop differs from my desktop. First of all, computational performance of laptops is nowadays limited by the heat dissipation capacity of the cooling system. Second, do you have dual channel RAM in it? Many laptops are sold with single channel RAM per default. LLR benefits from RAM bandwidth. With single channel RAM, it is again possible that the optimum is 1 thread per task, HT disabled. But this is just a wild guess on my part.


Thank you all for the information... Probably my first time deep diving into this program so I'm very new into all of it.

But I actually do have adequate cooling for a laptop even at full load but the RAM bandwidth would explain why my i5-4570 is outperforming it. I'm going to play around with setting to hopefully be more ready for the next challenge

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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,504,899)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (2,001,789)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,004,898)PPS LLR Ruby: Earned 2,000,000 credits (2,082,200)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (24,467,444)SR5 LLR Turquoise: Earned 5,000,000 credits (7,216,756)SGS LLR Ruby: Earned 2,000,000 credits (2,010,466)TRP LLR Ruby: Earned 2,000,000 credits (2,433,520)Woodall LLR Amethyst: Earned 1,000,000 credits (1,920,417)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,804,369)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (6,499,818)GFN Emerald: Earned 50,000,000 credits (52,696,314)PSA Jade: Earned 10,000,000 credits (10,038,118)
Message 119924 - Posted: 13 Aug 2018 | 11:06:49 UTC

With a couple of hours remaining in the challenge, it's time to remind everyone...

At the Conclusion of the Challenge

We would prefer users "moving on" to finish those tasks they have downloaded, if not then please ABORT the WU's (and then UPDATE the PrimeGrid project) instead of DETACHING, RESETTING, or PAUSING.

ABORTING WU's allows them to be recycled immediately; thus a much faster "clean up" to the end of a Challenge. DETACHING, RESETTING, and PAUSING WU's causes them to remain in limbo until they EXPIRE. Therefore, we must wait until WU's expire to send them out to be completed. Thank you!
____________
Please do not PM me with support questions. They will usually go unanswered. Ask on the forums instead. Thank you!

My lucky number is 75898^524288+1

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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,504,899)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (2,001,789)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,004,898)PPS LLR Ruby: Earned 2,000,000 credits (2,082,200)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (24,467,444)SR5 LLR Turquoise: Earned 5,000,000 credits (7,216,756)SGS LLR Ruby: Earned 2,000,000 credits (2,010,466)TRP LLR Ruby: Earned 2,000,000 credits (2,433,520)Woodall LLR Amethyst: Earned 1,000,000 credits (1,920,417)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,804,369)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (6,499,818)GFN Emerald: Earned 50,000,000 credits (52,696,314)PSA Jade: Earned 10,000,000 credits (10,038,118)
Message 119925 - Posted: 13 Aug 2018 | 11:13:46 UTC

9 primes so far.
____________
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My lucky number is 75898^524288+1

JeppeSNProject donor
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321 LLR Bronze: Earned 10,000 credits (48,835)Cullen LLR Bronze: Earned 10,000 credits (98,851)ESP LLR Bronze: Earned 10,000 credits (13,226)PPS LLR Amethyst: Earned 1,000,000 credits (1,514,074)SoB LLR Silver: Earned 100,000 credits (132,293)SR5 LLR Bronze: Earned 10,000 credits (16,010)TRP LLR Bronze: Earned 10,000 credits (14,746)Woodall LLR Silver: Earned 100,000 credits (109,455)PSA Turquoise: Earned 5,000,000 credits (7,614,290)
Message 119929 - Posted: 13 Aug 2018 | 11:53:01 UTC - in response to Message 119925.

9 primes so far.

Nice! Some of them are already showing up in a "PrimeGrid Primes by Project" search. /JeppeSN

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Found 1 prime in the 2018 Tour de Primes321 LLR Gold: Earned 500,000 credits (738,429)Cullen LLR Gold: Earned 500,000 credits (700,934)ESP LLR Gold: Earned 500,000 credits (504,298)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (263,408)PPS LLR Gold: Earned 500,000 credits (747,721)PSP LLR Amethyst: Earned 1,000,000 credits (1,045,856)SoB LLR Ruby: Earned 2,000,000 credits (2,581,729)SR5 LLR Silver: Earned 100,000 credits (288,101)SGS LLR Silver: Earned 100,000 credits (202,162)TRP LLR Gold: Earned 500,000 credits (521,592)Woodall LLR Gold: Earned 500,000 credits (862,979)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (4,914,720)PPS Sieve Sapphire: Earned 20,000,000 credits (33,939,228)TRP Sieve (suspended) Silver: Earned 100,000 credits (156,305)AP 26/27 Gold: Earned 500,000 credits (650,923)GFN Sapphire: Earned 20,000,000 credits (29,935,811)
Message 119947 - Posted: 13 Aug 2018 | 17:45:39 UTC - in response to Message 119924.

At the Conclusion of the Challenge

Liebe Mitcruncher!
Bitte brecht Arbeitspakete, die ihr nicht mehr rechnen wollt, ab, anstatt sie zu pausieren oder eure Rechner abzumelden.
Abbrechen ermöglicht eine sofortige Neuausgabe, so daß das Ergebnis des Wettkampfes möglichst bald verifiziert werden kann.

VIELEN DANK !

Hope this reminder in our forums helps.
____________
Greetings, Jens

32987968^65536+1

Profile Michael GoetzProject donor
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Joined: 21 Jan 10
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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,504,899)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (2,001,789)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,004,898)PPS LLR Ruby: Earned 2,000,000 credits (2,082,200)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (24,467,444)SR5 LLR Turquoise: Earned 5,000,000 credits (7,216,756)SGS LLR Ruby: Earned 2,000,000 credits (2,010,466)TRP LLR Ruby: Earned 2,000,000 credits (2,433,520)Woodall LLR Amethyst: Earned 1,000,000 credits (1,920,417)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,804,369)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (6,499,818)GFN Emerald: Earned 50,000,000 credits (52,696,314)PSA Jade: Earned 10,000,000 credits (10,038,118)
Message 119949 - Posted: 13 Aug 2018 | 18:03:05 UTC

Final results!


Challenge: Solar Eclipse
App: 10 (PPS-LLR)
(As of 2018-08-13 18:00:23 UTC)

521654 tasks have been sent out. [CPU/GPU/anonymous_platform: 520905 (100%) / 0 (0%) / 749 (0%)]

Of those tasks that have been sent out:

24374 (5%) came back with some kind of an error. [24374 (5%) / 0 (0%) / 0 (0%)]
437399 (84%) have returned a successful result. [436652 (84%) / 0 (0%) / 747 (0%)]
59008 (11%) are still in progress. [59004 (11%) / 0 (0%) / 2 (0%)]

Of the tasks that have been returned successfully:

56174 (13%) are pending validation. [56077 (13%) / 0 (0%) / 97 (0%)]
380860 (87%) have been successfully validated. [380210 (87%) / 0 (0%) / 650 (0%)]
279 (0%) were invalid. [279 (0%) / 0 (0%) / 0 (0%)]
86 (0%) are inconclusive. [86 (0%) / 0 (0%) / 0 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is n=2636035. The leading edge was at n=2616900 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 0.73% as much as it had prior to the challenge!


9 PPS primes were found during the challenge. All were challenge tasks.
____________
Please do not PM me with support questions. They will usually go unanswered. Ask on the forums instead. Thank you!

My lucky number is 75898^524288+1

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Discovered 1 mega prime2012 Tour de Primes highest prime scoreFound 2 primes in the 2018 Tour de Primes321 LLR Jade: Earned 10,000,000 credits (13,495,745)Cullen LLR Ruby: Earned 2,000,000 credits (2,605,349)ESP LLR Ruby: Earned 2,000,000 credits (3,191,926)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,268,933)PPS LLR Turquoise: Earned 5,000,000 credits (7,938,894)PSP LLR Ruby: Earned 2,000,000 credits (2,061,297)SoB LLR Ruby: Earned 2,000,000 credits (2,796,799)SR5 LLR Ruby: Earned 2,000,000 credits (2,285,621)SGS LLR Ruby: Earned 2,000,000 credits (2,294,236)TRP LLR Amethyst: Earned 1,000,000 credits (1,590,965)Woodall LLR Amethyst: Earned 1,000,000 credits (1,258,942)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,449,019)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,388,253)PPS Sieve Double Silver: Earned 200,000,000 credits (330,326,714)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,072,601)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,441,257)AP 26/27 Jade: Earned 10,000,000 credits (17,954,963)GFN Sapphire: Earned 20,000,000 credits (38,607,130)PSA Emerald: Earned 50,000,000 credits (79,952,619)
Message 119950 - Posted: 13 Aug 2018 | 18:07:20 UTC

Congratulations to the Czech National Team and to zunewantan.
It was a great challenge, despite the heat.
____________
676754^262144+1 is prime

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Joined: 13 Aug 10
Posts: 6309
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Credit: 3,430,097,972
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Discovered 1 mega primeFound 2 primes in the 2018 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,148,880)Cullen LLR Ruby: Earned 2,000,000 credits (2,773,730)ESP LLR Ruby: Earned 2,000,000 credits (2,084,793)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,686,707)PPS LLR Jade: Earned 10,000,000 credits (11,154,829)PSP LLR Amethyst: Earned 1,000,000 credits (1,169,582)SoB LLR Ruby: Earned 2,000,000 credits (2,798,257)SR5 LLR Jade: Earned 10,000,000 credits (11,169,992)SGS LLR Turquoise: Earned 5,000,000 credits (5,943,634)TRP LLR Turquoise: Earned 5,000,000 credits (5,110,887)Woodall LLR Ruby: Earned 2,000,000 credits (3,281,648)321 Sieve (suspended) Bronze: Earned 10,000 credits (54,591)Cullen/Woodall Sieve (suspended) Double Bronze: Earned 100,000,000 credits (127,922,665)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (8,580,029)PPS Sieve Double Amethyst: Earned 1,000,000,000 credits (1,655,954,320)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (8,134,964)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,013,696)AP 26/27 Emerald: Earned 50,000,000 credits (93,821,858)GFN Double Bronze: Earned 100,000,000 credits (107,636,226)PSA Double Amethyst: Earned 1,000,000,000 credits (1,370,700,486)
Message 119952 - Posted: 13 Aug 2018 | 18:18:06 UTC - in response to Message 119950.

Congratulations to the Czech National Team and to zunewantan.
It was a great challenge, despite the heat.


Yes, it was a good challenge and congrats to the Czech National Team (pulled a page out of our playbook) and big congrats to zunewantan.

Cheers Rick

and a double congrats to the prime finders.

Profile Michael GoetzProject donor
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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,504,899)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (2,001,789)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,004,898)PPS LLR Ruby: Earned 2,000,000 credits (2,082,200)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (24,467,444)SR5 LLR Turquoise: Earned 5,000,000 credits (7,216,756)SGS LLR Ruby: Earned 2,000,000 credits (2,010,466)TRP LLR Ruby: Earned 2,000,000 credits (2,433,520)Woodall LLR Amethyst: Earned 1,000,000 credits (1,920,417)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,804,369)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (6,499,818)GFN Emerald: Earned 50,000,000 credits (52,696,314)PSA Jade: Earned 10,000,000 credits (10,038,118)
Message 119953 - Posted: 13 Aug 2018 | 18:27:36 UTC

The cleanup begins!

Solar Eclipse:
Aug-13: Solar Eclipse: 55801 tasks outstanding; 44514 affecting individual (293) scoring positions; 23540 affecting team (68) scoring positions.

____________
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My lucky number is 75898^524288+1

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Joined: 2 Jan 16
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Found 1 prime in the 2018 Tour de Primes321 LLR Gold: Earned 500,000 credits (738,429)Cullen LLR Gold: Earned 500,000 credits (700,934)ESP LLR Gold: Earned 500,000 credits (504,298)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (263,408)PPS LLR Gold: Earned 500,000 credits (747,721)PSP LLR Amethyst: Earned 1,000,000 credits (1,045,856)SoB LLR Ruby: Earned 2,000,000 credits (2,581,729)SR5 LLR Silver: Earned 100,000 credits (288,101)SGS LLR Silver: Earned 100,000 credits (202,162)TRP LLR Gold: Earned 500,000 credits (521,592)Woodall LLR Gold: Earned 500,000 credits (862,979)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (4,914,720)PPS Sieve Sapphire: Earned 20,000,000 credits (33,939,228)TRP Sieve (suspended) Silver: Earned 100,000 credits (156,305)AP 26/27 Gold: Earned 500,000 credits (650,923)GFN Sapphire: Earned 20,000,000 credits (29,935,811)
Message 119954 - Posted: 13 Aug 2018 | 18:41:35 UTC

Thanks and congrats to everyone who overcame the heat to take part in this challenge!
____________
Greetings, Jens

32987968^65536+1

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Found 1 prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,654,329)Cullen LLR Amethyst: Earned 1,000,000 credits (1,305,599)ESP LLR Ruby: Earned 2,000,000 credits (2,085,950)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,050,279)PPS LLR Ruby: Earned 2,000,000 credits (2,149,793)PSP LLR Ruby: Earned 2,000,000 credits (2,420,512)SoB LLR Amethyst: Earned 1,000,000 credits (1,493,571)SR5 LLR Ruby: Earned 2,000,000 credits (2,238,295)SGS LLR Ruby: Earned 2,000,000 credits (2,038,730)TRP LLR Ruby: Earned 2,000,000 credits (2,066,087)Woodall LLR Amethyst: Earned 1,000,000 credits (1,293,758)Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (207,387)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (5,046,966)PPS Sieve Double Bronze: Earned 100,000,000 credits (100,422,123)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (3,227,972)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,021,659)AP 26/27 Sapphire: Earned 20,000,000 credits (20,033,065)GFN Emerald: Earned 50,000,000 credits (55,077,302)PSA Sapphire: Earned 20,000,000 credits (43,298,465)
Message 119966 - Posted: 13 Aug 2018 | 22:21:51 UTC

Had a great Challenge.
Awesome photos of the Eclipse:
https://www.space.com/41464-partial-solar-eclipse-august-2018-photos.html
Eclipse from space:
https://phys.org/news/2018-08-image-partial-solar-eclipse-space.html

Full listing of Solar and Lunar Eclipses, and when the next one is visible from your nearest city:
https://www.timeanddate.com/eclipse/list.html

Profile Michael GoetzProject donor
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Joined: 21 Jan 10
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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,504,899)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (2,001,789)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,004,898)PPS LLR Ruby: Earned 2,000,000 credits (2,082,200)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (24,467,444)SR5 LLR Turquoise: Earned 5,000,000 credits (7,216,756)SGS LLR Ruby: Earned 2,000,000 credits (2,010,466)TRP LLR Ruby: Earned 2,000,000 credits (2,433,520)Woodall LLR Amethyst: Earned 1,000,000 credits (1,920,417)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,804,369)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (6,499,818)GFN Emerald: Earned 50,000,000 credits (52,696,314)PSA Jade: Earned 10,000,000 credits (10,038,118)
Message 119974 - Posted: 14 Aug 2018 | 13:34:49 UTC - in response to Message 119953.



Solar Eclipse:
Aug-13: Solar Eclipse: 55801 tasks outstanding; 44514 affecting individual (293) scoring positions; 23540 affecting team (68) scoring positions.
Aug-14: Solar Eclipse: 25191 tasks outstanding; 18643 affecting individual (278) scoring positions; 7467 affecting team (40) scoring positions.

____________
Please do not PM me with support questions. They will usually go unanswered. Ask on the forums instead. Thank you!

My lucky number is 75898^524288+1

PenguinProject donor
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Joined: 14 Sep 12
Posts: 235
ID: 172547
Credit: 77,551,998
RAC: 2,136,022
321 LLR Gold: Earned 500,000 credits (567,858)Cullen LLR Amethyst: Earned 1,000,000 credits (1,080,659)ESP LLR Amethyst: Earned 1,000,000 credits (1,224,956)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (218,719)PPS LLR Gold: Earned 500,000 credits (504,975)PSP LLR Silver: Earned 100,000 credits (260,083)SoB LLR Gold: Earned 500,000 credits (606,453)SR5 LLR Silver: Earned 100,000 credits (105,995)SGS LLR Silver: Earned 100,000 credits (246,466)TRP LLR Silver: Earned 100,000 credits (209,369)Woodall LLR Silver: Earned 100,000 credits (212,929)Generalized Cullen/Woodall Sieve Amethyst: Earned 1,000,000 credits (1,014,127)PPS Sieve Sapphire: Earned 20,000,000 credits (20,064,192)TRP Sieve (suspended) Silver: Earned 100,000 credits (110,630)AP 26/27 Ruby: Earned 2,000,000 credits (4,592,848)GFN Jade: Earned 10,000,000 credits (14,427,703)PSA Sapphire: Earned 20,000,000 credits (32,094,322)
Message 119978 - Posted: 14 Aug 2018 | 14:04:19 UTC - in response to Message 119974.



Solar Eclipse:
Aug-13: Solar Eclipse: 55801 tasks outstanding; 44514 affecting individual (293) scoring positions; 23540 affecting team (68) scoring positions.
Aug-14: Solar Eclipse: 25191 tasks outstanding; 18643 affecting individual (278) scoring positions; 7467 affecting team (40) scoring positions.


Still crunching here for the cleanup.

Profile Michael GoetzProject donor
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Joined: 21 Jan 10
Posts: 11373
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Credit: 149,886,790
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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,504,899)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (2,001,789)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,004,898)PPS LLR Ruby: Earned 2,000,000 credits (2,082,200)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (24,467,444)SR5 LLR Turquoise: Earned 5,000,000 credits (7,216,756)SGS LLR Ruby: Earned 2,000,000 credits (2,010,466)TRP LLR Ruby: Earned 2,000,000 credits (2,433,520)Woodall LLR Amethyst: Earned 1,000,000 credits (1,920,417)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,804,369)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (6,499,818)GFN Emerald: Earned 50,000,000 credits (52,696,314)PSA Jade: Earned 10,000,000 credits (10,038,118)
Message 119979 - Posted: 14 Aug 2018 | 14:14:45 UTC - in response to Message 119978.



Solar Eclipse:
Aug-13: Solar Eclipse: 55801 tasks outstanding; 44514 affecting individual (293) scoring positions; 23540 affecting team (68) scoring positions.
Aug-14: Solar Eclipse: 25191 tasks outstanding; 18643 affecting individual (278) scoring positions; 7467 affecting team (40) scoring positions.


Still crunching here for the cleanup.


Please understand that the majority of the cleanup (and, at this moment, "majority" means exactly 100%) involves waiting for tasks that have been sent to computers to either be completed or to time out. The tasks your computer is getting right now are not cleanup tasks. Run PPS-LLR or not, as you desire. It won't affect the cleanup either way.
____________
Please do not PM me with support questions. They will usually go unanswered. Ask on the forums instead. Thank you!

My lucky number is 75898^524288+1

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Joined: 26 Aug 17
Posts: 350
ID: 918937
Credit: 101,894,557
RAC: 118,714
Found 2 primes in the 2018 Tour de Primes321 LLR Gold: Earned 500,000 credits (509,666)Cullen LLR Gold: Earned 500,000 credits (508,598)ESP LLR Gold: Earned 500,000 credits (506,993)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (511,805)PPS LLR Ruby: Earned 2,000,000 credits (3,672,211)PSP LLR Gold: Earned 500,000 credits (564,299)SoB LLR Amethyst: Earned 1,000,000 credits (1,286,750)SR5 LLR Amethyst: Earned 1,000,000 credits (1,129,594)SGS LLR Amethyst: Earned 1,000,000 credits (1,053,398)TRP LLR Amethyst: Earned 1,000,000 credits (1,014,760)Woodall LLR Gold: Earned 500,000 credits (534,758)Generalized Cullen/Woodall Sieve Gold: Earned 500,000 credits (549,353)PPS Sieve Emerald: Earned 50,000,000 credits (57,354,194)AP 26/27 Jade: Earned 10,000,000 credits (16,228,602)GFN Jade: Earned 10,000,000 credits (16,472,987)
Message 119981 - Posted: 14 Aug 2018 | 14:20:49 UTC - in response to Message 119979.
Last modified: 14 Aug 2018 | 14:23:26 UTC



Solar Eclipse:
Aug-13: Solar Eclipse: 55801 tasks outstanding; 44514 affecting individual (293) scoring positions; 23540 affecting team (68) scoring positions.
Aug-14: Solar Eclipse: 25191 tasks outstanding; 18643 affecting individual (278) scoring positions; 7467 affecting team (40) scoring positions.


Still crunching here for the cleanup.


Please understand that the majority of the cleanup (and, at this moment, "majority" means exactly 100%) involves waiting for tasks that have been sent to computers to either be completed or to time out. The tasks your computer is getting right now are not cleanup tasks. Run PPS-LLR or not, as you desire. It won't affect the cleanup either way.

Good to know.
I went for CUL to test the crunch time, but forgot to change my config (it was for PPS) and BOINC downloaded 3 CUL tasks intstead of only one, as I expected.
I have a personal policy and try to never abort downloaded tasks.
So I'm stuck with CUL for a while.
Knowing that the clean up won't miss me crunching PPS, makes me feel better :)
____________
"Accidit in puncto, quod non contingit in anno."
Something that does not occur in a year may, perchance, happen in a moment.

Profile Michael GoetzProject donor
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Joined: 21 Jan 10
Posts: 11373
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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,504,899)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (2,001,789)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,004,898)PPS LLR Ruby: Earned 2,000,000 credits (2,082,200)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (24,467,444)SR5 LLR Turquoise: Earned 5,000,000 credits (7,216,756)SGS LLR Ruby: Earned 2,000,000 credits (2,010,466)TRP LLR Ruby: Earned 2,000,000 credits (2,433,520)Woodall LLR Amethyst: Earned 1,000,000 credits (1,920,417)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,804,369)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (6,499,818)GFN Emerald: Earned 50,000,000 credits (52,696,314)PSA Jade: Earned 10,000,000 credits (10,038,118)
Message 119992 - Posted: 15 Aug 2018 | 10:37:06 UTC - in response to Message 119974.

Challenge Cleanup:
Aug-13: Solar Eclipse: 55801 tasks outstanding; 44514 affecting individual (293) scoring positions; 23540 affecting team (68) scoring positions.
Aug-14: Solar Eclipse: 25191 tasks outstanding; 18643 affecting individual (278) scoring positions; 7467 affecting team (40) scoring positions.
Aug-15: Solar Eclipse: 18195 tasks outstanding; 12107 affecting individual (256) scoring positions; 1357 affecting team (29) scoring positions.

____________
Please do not PM me with support questions. They will usually go unanswered. Ask on the forums instead. Thank you!

My lucky number is 75898^524288+1

PenguinProject donor
Send message
Joined: 14 Sep 12
Posts: 235
ID: 172547
Credit: 77,551,998
RAC: 2,136,022
321 LLR Gold: Earned 500,000 credits (567,858)Cullen LLR Amethyst: Earned 1,000,000 credits (1,080,659)ESP LLR Amethyst: Earned 1,000,000 credits (1,224,956)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (218,719)PPS LLR Gold: Earned 500,000 credits (504,975)PSP LLR Silver: Earned 100,000 credits (260,083)SoB LLR Gold: Earned 500,000 credits (606,453)SR5 LLR Silver: Earned 100,000 credits (105,995)SGS LLR Silver: Earned 100,000 credits (246,466)TRP LLR Silver: Earned 100,000 credits (209,369)Woodall LLR Silver: Earned 100,000 credits (212,929)Generalized Cullen/Woodall Sieve Amethyst: Earned 1,000,000 credits (1,014,127)PPS Sieve Sapphire: Earned 20,000,000 credits (20,064,192)TRP Sieve (suspended) Silver: Earned 100,000 credits (110,630)AP 26/27 Ruby: Earned 2,000,000 credits (4,592,848)GFN Jade: Earned 10,000,000 credits (14,427,703)PSA Sapphire: Earned 20,000,000 credits (32,094,322)
Message 119993 - Posted: 15 Aug 2018 | 10:39:14 UTC - in response to Message 119979.



Solar Eclipse:
Aug-13: Solar Eclipse: 55801 tasks outstanding; 44514 affecting individual (293) scoring positions; 23540 affecting team (68) scoring positions.
Aug-14: Solar Eclipse: 25191 tasks outstanding; 18643 affecting individual (278) scoring positions; 7467 affecting team (40) scoring positions.


Still crunching here for the cleanup.


Please understand that the majority of the cleanup (and, at this moment, "majority" means exactly 100%) involves waiting for tasks that have been sent to computers to either be completed or to time out. The tasks your computer is getting right now are not cleanup tasks. Run PPS-LLR or not, as you desire. It won't affect the cleanup either way.


Ah ic, thanks for the info.

Profile Michael GoetzProject donor
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Joined: 21 Jan 10
Posts: 11373
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Credit: 149,886,790
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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,504,899)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (2,001,789)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,004,898)PPS LLR Ruby: Earned 2,000,000 credits (2,082,200)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (24,467,444)SR5 LLR Turquoise: Earned 5,000,000 credits (7,216,756)SGS LLR Ruby: Earned 2,000,000 credits (2,010,466)TRP LLR Ruby: Earned 2,000,000 credits (2,433,520)Woodall LLR Amethyst: Earned 1,000,000 credits (1,920,417)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,804,369)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (6,499,818)GFN Emerald: Earned 50,000,000 credits (52,696,314)PSA Jade: Earned 10,000,000 credits (10,038,118)
Message 120011 - Posted: 16 Aug 2018 | 13:07:21 UTC - in response to Message 119992.
Last modified: 17 Aug 2018 | 11:50:10 UTC

Challenge Cleanup:
Aug-13: Solar Eclipse: 55801 tasks outstanding; 44514 affecting individual (293) scoring positions; 23540 affecting team (68) scoring positions.
Aug-14: Solar Eclipse: 25191 tasks outstanding; 18643 affecting individual (278) scoring positions; 7467 affecting team (40) scoring positions.
Aug-15: Solar Eclipse: 18195 tasks outstanding; 12107 affecting individual (256) scoring positions; 1357 affecting team (29) scoring positions.
Aug-16: Solar Eclipse: 7545 tasks outstanding; 3279 affecting individual (188) scoring positions; 172 affecting team (17) scoring positions.
Aug-17: Solar Eclipse: 4290 tasks outstanding; 1269 affecting individual (125) scoring positions; 47 affecting team (7) scoring positions.
____________
Please do not PM me with support questions. They will usually go unanswered. Ask on the forums instead. Thank you!

My lucky number is 75898^524288+1

JeppeSNProject donor
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Joined: 5 Apr 14
Posts: 729
ID: 306875
Credit: 9,563,393
RAC: 11,106
321 LLR Bronze: Earned 10,000 credits (48,835)Cullen LLR Bronze: Earned 10,000 credits (98,851)ESP LLR Bronze: Earned 10,000 credits (13,226)PPS LLR Amethyst: Earned 1,000,000 credits (1,514,074)SoB LLR Silver: Earned 100,000 credits (132,293)SR5 LLR Bronze: Earned 10,000 credits (16,010)TRP LLR Bronze: Earned 10,000 credits (14,746)Woodall LLR Silver: Earned 100,000 credits (109,455)PSA Turquoise: Earned 5,000,000 credits (7,614,290)
Message 120035 - Posted: 18 Aug 2018 | 9:56:16 UTC - in response to Message 119949.

9 PPS primes were found during the challenge. All were challenge tasks.

I see one of them was a factor of the enormous number:

xGF(2630493,7,4) = 7^(2^2630493) + 4^(2^2630493) = 7^(2^2630493) + 2^(2^2630494)

That number is comparable to 10^(1.67 * 10^791857) or 10^(10^(10^5.8986)).

/JeppeSN

Profile Michael GoetzProject donor
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Joined: 21 Jan 10
Posts: 11373
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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,504,899)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (2,001,789)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,004,898)PPS LLR Ruby: Earned 2,000,000 credits (2,082,200)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (24,467,444)SR5 LLR Turquoise: Earned 5,000,000 credits (7,216,756)SGS LLR Ruby: Earned 2,000,000 credits (2,010,466)TRP LLR Ruby: Earned 2,000,000 credits (2,433,520)Woodall LLR Amethyst: Earned 1,000,000 credits (1,920,417)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,804,369)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (6,499,818)GFN Emerald: Earned 50,000,000 credits (52,696,314)PSA Jade: Earned 10,000,000 credits (10,038,118)
Message 120036 - Posted: 18 Aug 2018 | 11:14:34 UTC - in response to Message 120011.
Last modified: 20 Aug 2018 | 11:50:51 UTC

Challenge Cleanup:
Aug-13: Solar Eclipse: 55801 tasks outstanding; 44514 affecting individual (293) scoring positions; 23540 affecting team (68) scoring positions.
Aug-14: Solar Eclipse: 25191 tasks outstanding; 18643 affecting individual (278) scoring positions; 7467 affecting team (40) scoring positions.
Aug-15: Solar Eclipse: 18195 tasks outstanding; 12107 affecting individual (256) scoring positions; 1357 affecting team (29) scoring positions.
Aug-16: Solar Eclipse: 7545 tasks outstanding; 3279 affecting individual (188) scoring positions; 172 affecting team (17) scoring positions.
Aug-17: Solar Eclipse: 4290 tasks outstanding; 1269 affecting individual (125) scoring positions; 47 affecting team (7) scoring positions.
Aug-18: Solar Eclipse: 1820 tasks outstanding; 291 affecting individual (61) scoring positions; 18 affecting team (3) scoring positions.
Aug-19: Solar Eclipse: 631 tasks outstanding; 40 affecting individual (15) scoring positions; 4 affecting team (2) scoring positions.
Aug-20: Solar Eclipse: 193 tasks outstanding; 7 affecting individual (4) scoring positions; 0 affecting team (0) scoring positions.
____________
Please do not PM me with support questions. They will usually go unanswered. Ask on the forums instead. Thank you!

My lucky number is 75898^524288+1

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Joined: 27 Nov 11
Posts: 1041
ID: 120786
Credit: 253,108,920
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Found 1 prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,654,329)Cullen LLR Amethyst: Earned 1,000,000 credits (1,305,599)ESP LLR Ruby: Earned 2,000,000 credits (2,085,950)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,050,279)PPS LLR Ruby: Earned 2,000,000 credits (2,149,793)PSP LLR Ruby: Earned 2,000,000 credits (2,420,512)SoB LLR Amethyst: Earned 1,000,000 credits (1,493,571)SR5 LLR Ruby: Earned 2,000,000 credits (2,238,295)SGS LLR Ruby: Earned 2,000,000 credits (2,038,730)TRP LLR Ruby: Earned 2,000,000 credits (2,066,087)Woodall LLR Amethyst: Earned 1,000,000 credits (1,293,758)Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (207,387)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (5,046,966)PPS Sieve Double Bronze: Earned 100,000,000 credits (100,422,123)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (3,227,972)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,021,659)AP 26/27 Sapphire: Earned 20,000,000 credits (20,033,065)GFN Emerald: Earned 50,000,000 credits (55,077,302)PSA Sapphire: Earned 20,000,000 credits (43,298,465)
Message 120083 - Posted: 21 Aug 2018 | 13:06:54 UTC

The results are final!

Special Congratulations to:
● LookAS of Czech National Team for finding the first prime of the challenge 981*2^2622032+1
● JayPi of SETI.Germany for finding the second prime of the challenge 693*2^2623557+1
● UBT - Mikeejones of UK BOINC Team for finding the third prime of the challenge 807*2^2625044+1
● xii5ku of TeAm AnandTech for finding the fourth prime of the challenge 819*2^2627529+1
● zunewantan of Aggie The Pew for finding the fifth prime of the challenge 967*2^2629344+1
● JG4KEZ(Koichi Soraku) of BOINC@MIXI for finding the prime with the highest k of the challenge 1131*2^2629345+1
● vaughan of AMD Users for finding the prime with the lowest k of the challenge 465*2^2630496+1 that is also a Factor of xGF(2630493,7,4)!!!!
● Scott Brown of Aggie The Pew for finding the largest prime of the challenge 741*2^2634385+1
● eisler jiri of Czech National Team for finding the final prime of the challenge 813*2^2626224+1

Top 3 individuals:

1: zunewantan
2: xii5ku
3: Scott Brown

Top 3 teams:

1: Czech National Team
2: Aggie The Pew
3: SETI.Germany

Congratulations to the winners, and well done to everyone who participated.
See you at the Oktoberfest Challenge!

____________

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