Join PrimeGrid
Returning Participants
Community
Leader Boards
Results
Other
drummers-lowrise
|
Message boards :
Number crunching :
Year of the Dog Challenge
Author |
Message |
RogerVolunteer developer Volunteer tester
 Send message
Joined: 27 Nov 11 Posts: 1135 ID: 120786 Credit: 263,802,193 RAC: 12,688
                    
|
Year of the Dog
2018 is a Year of the Dog. In Chinese astrology, each year is related to a Chinese zodiac animal according to the 12-year cycle. 2018 is an Earth Dog Year, starting on 16th February 2018 and ending on 4th February 2019. Earth Dog's are Communicative, serious, and responsible in work. Famous Earth Dog's include Madonna and Michael Jackson.
The second Challenge of the 2018 Challenge series is a 7 day challenge to celebrate the Year of the Dog. The challenge is being offered on the 321 Prime Search (LLR) application.
To participate in the Challenge, please select only the 321 Prime Search LLR (321) project in your PrimeGrid preferences section. The challenge will begin 16th March 2018 18:00 UTC and end 23rd March 2018 18:00 UTC.
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 ~48 hours on fast/newer computers and 6+ days 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 321 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.
Multi-threading optimisation instructions
Those looking to maximise their computer's performance during this challenge, or when running LLR in general, may find this information useful.
- Your mileage may vary. Before the challenge starts, take some time and experiment and see what works best on your computer.
- If you have an Intel CPU with hyperthreading, either turn off the hyperthreading in the BIOS, or set BOINC to use 50% of the processors.
- If you're using a GPU for other tasks, it may be beneficial to leave hyperthreading on in the BIOS and instead tell BOINC to use 50% of the CPU's. This will allow one of the hyperthreads to service the GPU.
- Use LLR's multithreaded mode. It requires a little bit of setup, but it's worth the effort. Follow these steps:
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 16th March 2018 18:00 UTC and received BEFORE 23rd March 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 321 Search
321 Search began in February 2003 from a post by Paul Underwood seeking help from interested parties in a prime search attempt of the form 3*2^n-1. The initial goal was to build upon the completed work at Proth Search and extend the list of known primes to an exponent of 1 million (n=1M). That was quickly achieved so they advanced their goal to finding a mega prime for which they sieved up to n=5M.
As seen on PrimeGrid's front page, that goal was achieved on 23 Mar 2008, 7:57:28 UTC, when Dylan Bennett of Canada returned a positive result for n=4235414 (3*2^4235414-1). official announcement | decimal representation
PrimeGrid added the +1 form and continues the search up to n=25M.
Primes known for 3*2^n+1 occur at the following n (PrimeGrid's finds in bold & linked):
1, 2, 5, 6, 8, 12, 18, 30, 36, 41, 66, 189, 201, 209, 276, 353, 408, 438, 534, 2208, 2816, 3168, 3189, 3912, 20909, 34350, 42294, 42665, 44685, 48150, 54792, 55182, 59973, 80190, 157169, 213321, 303093, 362765, 382449, 709968, 801978, 916773, 1832496, 2145353, 2291610, 2478785, 5082306, 7033641, 10829346
Primes known for 3*2^n-1 occur at the following n (PrimeGrid's finds in bold & linked):
1, 2, 3, 4, 6, 7, 11, 18, 34, 38, 43, 55, 64, 76, 94, 103, 143, 206, 216, 306, 324, 391, 458, 470, 827, 1274, 3276, 4204, 5134, 7559, 12676, 14898, 18123, 18819, 25690, 26459, 41628, 51387, 71783, 80330, 85687, 88171, 97063, 123630, 155930, 164987, 234760, 414840, 584995, 702038, 727699, 992700, 1201046, 1232255, 2312734, 3136255, 4235414, 6090515, 11484018, 11731850, 11895718
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).
____________
| |
|
|
Primes known for 3*2^n+1 occur at the following n (PrimeGrid's finds in bold & linked):
1, 2, 5, 6, 8, 12, 18, 30, 36, 41, 66, 189, 201, 209, 276, 353, 408, 438, 534, 2208, 2816, 3168, 3189, 3912, 20909, 34350, 42294, 42665, 44685, 48150, 54792, 55182, 59973, 80190, 157169, 213321, 303093, 362765, 382449, 709968, 801978, 916773, 1832496, 2145353, 2291610, 2478785, 5082306, 7033641, 10829346
Primes known for 3*2^n-1 occur at the following n (PrimeGrid's finds in bold & linked):
1, 2, 3, 4, 6, 7, 11, 18, 34, 38, 43, 55, 64, 76, 94, 103, 143, 206, 216, 306, 324, 391, 458, 470, 827, 1274, 3276, 4204, 5134, 7559, 12676, 14898, 18123, 18819, 25690, 26459, 41628, 51387, 71783, 80330, 85687, 88171, 97063, 123630, 155930, 164987, 234760, 414840, 584995, 702038, 727699, 992700, 1201046, 1232255, 2312734, 3136255, 4235414, 6090515, 11484018, 11731850, 11895718
So cool. These are OEIS A002253 and A002235, respectively.
If you love primes so much you want to see only the exponents that are also prime, you get A175172 and A175171, respectively.
How about one exponent working for both the plus form and the minus form? That gives A181490.
The plus forms seems more interesting because it usually turns out that your prime is a factor of several generalized Fermat numbers (GF and/or xGF). If you are really lucky, you have a factor of a true (classical) Fermat number; see A204620 for that kind of 321 primes.
If you are lucky enough to find a prime, you will go to one or more Top Twenty lists.
In any case, expect to reach:
The Top Twenty: Largest Known Primes
If you have the plus form, then also:
The Top Twenty: Proth (certainly)
The Top Twenty: Generalized Fermat Divisors (bases 3,5,6,10,12) (probably)
The Top Twenty: Generalized Fermat Divisors (base=3) (maybe)
The Top Twenty: Generalized Fermat Divisors (base=5) (maybe)
The Top Twenty: Generalized Fermat Divisors (base=6) (maybe)
The Top Twenty: Generalized Fermat Divisors (base=10) (maybe)
The Top Twenty: Generalized Fermat Divisors (base=12) (maybe)
The Top Twenty: Fermat Divisors (if you are very lucky)
Of course, primes of the size currently investigated in this 321 search are really rare, so it would be a surprise if anyone found anything during such a relatively short challenge.
/JeppeSN | |
|
|
Is there a score list in this challenge?
____________
| |
|
Honza Volunteer moderator Volunteer tester Project scientist Send message
Joined: 15 Aug 05 Posts: 1845 ID: 352 Credit: 2,646,417,648 RAC: 1,258,761
                            
|
Is there a score list in this challenge?
Individual Challenge Points and Team Challenge Points at the usual place - PrimeGrid's Challenge Series
____________
My stats
Badge score: 1*1 + 5*1 + 7*1 + 8*8 + 9*7 + 11*1 + 12*3 = 187 | |
|
|
Thank you!
____________
| |
|
Robish  Send message
Joined: 7 Jan 12 Posts: 1291 ID: 126266 Credit: 3,197,453,169 RAC: 4,084,624
                        
|
I edited my app_config.xml and got the following message
PrimeGrid: Notice from BOINC
Your app_config.xml file refers to an unknown application 'llr321'. Known applications: 'llrMEGA', 'genefer15', 'llrTPS', 'llrPPS', 'genefer16', 'genefer17mega', 'genefer17low', 'genefer18', 'gcw_sieve', 'genefer20', 'pps_sr2sieve', 'llrPPSE', 'llrSOB', 'llrESP', 'llrPSP'
08/03/2018 17:31:31
Any ideas what I'm doing wrong?
<app_config>
<app>
<name>llr321</name>
<fraction_done_exact/>
<max_concurrent>1</max_concurrent>
</app>
<app_version>
<app_name>llr321</app_name>
<cmdline>-t 2</cmdline>
<avg_ncpus>2</avg_ncpus>
</app_version>
<app>
<name>llrSOB</name>
<fraction_done_exact/>
<max_concurrent>1</max_concurrent>
</app>
<app_version>
<app_name>llrSOB</app_name>
<cmdline>-t 2</cmdline>
<avg_ncpus>2</avg_ncpus>
</app_version>
</app_config>
Thanks Rob.
____________
My lucky number 10590941048576+1 | |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
I edited my app_config.xml and got the following message
PrimeGrid: Notice from BOINC
Your app_config.xml file refers to an unknown application 'llr321'. Known applications: 'llrMEGA', 'genefer15', 'llrTPS', 'llrPPS', 'genefer16', 'genefer17mega', 'genefer17low', 'genefer18', 'gcw_sieve', 'genefer20', 'pps_sr2sieve', 'llrPPSE', 'llrSOB', 'llrESP', 'llrPSP'
08/03/2018 17:31:31
Any ideas what I'm doing wrong?
You're probably not expecting this answer: You're doing nothing wrong.
BOINC behaves that way until you run one of those tasks. You can safely ignore that message.
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
Robish  Send message
Joined: 7 Jan 12 Posts: 1291 ID: 126266 Credit: 3,197,453,169 RAC: 4,084,624
                        
|
I edited my app_config.xml and got the following message
PrimeGrid: Notice from BOINC
Your app_config.xml file refers to an unknown application 'llr321'. Known applications: 'llrMEGA', 'genefer15', 'llrTPS', 'llrPPS', 'genefer16', 'genefer17mega', 'genefer17low', 'genefer18', 'gcw_sieve', 'genefer20', 'pps_sr2sieve', 'llrPPSE', 'llrSOB', 'llrESP', 'llrPSP'
08/03/2018 17:31:31
Any ideas what I'm doing wrong?
You're probably not expecting this answer: You're doing nothing wrong.
BOINC behaves that way until you run one of those tasks. You can safely ignore that message.
Oh ok. Thanks Michael. I'll run a few so, to get rid of it.
Cheers
____________
My lucky number 10590941048576+1 | |
|
|
llr321 application is unknown because you have not downloaded it yet or there isn't a file/excecutable named like that. ;) | |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
The challenge starts in approximately 20 minutes!
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
|
Probably should have asked this earlier, but why isn't it starting at 03:21 UTC?
;-) | |
|
|
Good luck everyone, sure hope someone finds a prime this challenge.
It will be a big one if you do.
| |
|
|
Good luck everybody :D
____________
| |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
The first result has been returned (it was run on 12 SkyLake cores on an i9-7920X.)
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
|
PG should easily push through the 14 mega bit barrier before the week is out.
Good luck every one in discovering a new 321 prime! | |
|
|
Question:
1st post says "To participate in the Challenge, please select only the 321 Prime Search LLR (321) project in your PrimeGrid preferences section." but I see people running GFNs issued after the start.
Does this "only" just refery to CPU tasks (or GPU tasks during a GPU challenge)?
Is it only for the very beginning of the challenge, like until you return your first task?
Haven't really questioned it before, just run other projects, except this time I was going to be a few hours short for my next AP badge so I loaded up with about 25 tasks before unselecting it. | |
|
dthonon Volunteer tester Send message
Joined: 6 Dec 17 Posts: 366 ID: 957147 Credit: 1,109,659,370 RAC: 483,017
                         
|
Yes, 321 is a CPU only sub-project and you can run GPU tasks in parallel. | |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
Question:
1st post says "To participate in the Challenge, please select only the 321 Prime Search LLR (321) project in your PrimeGrid preferences section." but I see people running GFNs issued after the start.
Only the 321 tasks count for the challenge.
Since 321 is only available as CPU apps, that leaves your GPU free to do something else. It won't count for the challenge, but why leave the GPU idle when it can be doing something useful?
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
|
... but why leave the GPU idle when it can be doing something useful?
For my computer, the AP27 search seems to be the GPU project that has the minimum impact on the CPU task being processed simultaneously.
Next is PPS-Sieve.
Here, running GFN-15 at the same time, increases the CPU task crunch time noticeably.
In decreasing "impact time" order, I noted GFN-16, 17-Low, 17-Mega, and so on.
| |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
... but why leave the GPU idle when it can be doing something useful?
For my computer, the AP27 search seems to be the GPU project that has the minimum impact on the CPU task being processed simultaneously.
Next is PPS-Sieve.
Here, running GFN-15 at the same time, increases the CPU task crunch time noticeably.
In decreasing "impact time" order, I noted GFN-16, 17-Low, 17-Mega, and so on.
The smaller GFN's are less efficient, meaning the GPU is used less and the CPU more. Your observations are the expected behavior. The smallest GFNs have have the largest impact on running CPU tasks.
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
|
The task received before the start of the Challenge, submitted during the competition, is the score calculated?
____________
| |
|
|
No, according to the scoring information in the 1st post above:
Only tasks issued AFTER 16th March 2018 18:00 UTC and received BEFORE 23rd March 2018 18:00 UTC will be considered for credit. | |
|
|
Only the 321 tasks count for the challenge.
I got that part, I misinterpreted the "select only" to mean if I had any other sub-project selected I would not be considered a participant and therefore not show up on the leader board.
This explains the people with very few points at the end, they weren't actually participating, they just happened to run some during the challenge. | |
|
|
I asked for the first task 25 minutes too early... This competition snuck up on me and I only noticed it's start time 40 minutes prior to it actually starting. | |
|
|
I thought the start was today. Well, I'm going to crunch some 321 tasks from now. | |
|
|
Since 321 is only available as CPU apps, that leaves your GPU free to do something else. It won't count for the challenge, but why leave the GPU idle when it can be doing something useful?
Because electricity costs. :D | |
|
|
Only the 321 tasks count for the challenge.
I got that part, I misinterpreted the "select only" to mean if I had any other sub-project selected I would not be considered a participant and therefore not show up on the leader board.
This explains the people with very few points at the end, they weren't actually participating, they just happened to run some during the challenge.
Even if you do not "go all in" by selecting only this project (plus possible some GPU project(s)), if 321 happens to be one of the projects you have selected, and if you happen to receive and complete at least one 321 task during the challenge time interval, you will still be listed.
You will not be "disqualified" for doing other work as well.
Some people will participate without even noticing the challenge.
Most of the people who care about the challenge, select only this project to gain as high a position as possible.
/JeppeSN | |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
Day 1 is over!
Challenge: Year of the Dog
App: 7 (321-LLR)
(As of 2018-03-17 18:59:58 UTC)
14277 tasks have been sent out. [CPU/GPU/anonymous_platform: 14215 (100%) / 0 (0%) / 62 (0%)]
Of those tasks that have been sent out:
1437 (10%) came back with some kind of an error. [1435 (10%) / 0 (0%) / 2 (0%)]
4415 (31%) have returned a successful result. [4362 (31%) / 0 (0%) / 53 (0%)]
8425 (59%) are still in progress. [8418 (59%) / 0 (0%) / 7 (0%)]
Of the tasks that have been returned successfully:
2795 (63%) are pending validation. [2762 (63%) / 0 (0%) / 33 (1%)]
1594 (36%) have been successfully validated. [1574 (36%) / 0 (0%) / 20 (0%)]
3 (0%) were invalid. [3 (0%) / 0 (0%) / 0 (0%)]
23 (1%) are inconclusive. [23 (1%) / 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=13924048. The leading edge was at n=13851056 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!
Well over 4000 321 tasks were sent out and completed in the first day. Normal for 321 is about 300 per day. Were close to 15 times normal for this challenge. That's pretty spectacular.
Can we find a 321 prime?
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
After 2 days:
Challenge: Year of the Dog
App: 7 (321-LLR)
(As of 2018-03-18 18:54:18 UTC)
22710 tasks have been sent out. [CPU/GPU/anonymous_platform: 22591 (99%) / 0 (0%) / 119 (1%)]
Of those tasks that have been sent out:
2248 (10%) came back with some kind of an error. [2246 (10%) / 0 (0%) / 2 (0%)]
11187 (49%) have returned a successful result. [11077 (49%) / 0 (0%) / 110 (0%)]
9275 (41%) are still in progress. [9268 (41%) / 0 (0%) / 7 (0%)]
Of the tasks that have been returned successfully:
4603 (41%) are pending validation. [4558 (41%) / 0 (0%) / 45 (0%)]
6529 (58%) have been successfully validated. [6464 (58%) / 0 (0%) / 65 (1%)]
19 (0%) were invalid. [19 (0%) / 0 (0%) / 0 (0%)]
36 (0%) are inconclusive. [36 (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=13966470. The leading edge was at n=13851056 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 0.83% as much as it had prior to the challenge!
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
Van Zimmerman Volunteer moderator Project administrator Volunteer tester Project scientist Send message
Joined: 30 Aug 12 Posts: 1950 ID: 168418 Credit: 6,078,295,214 RAC: 1,471,974
                      
|
Since 321 is only available as CPU apps, that leaves your GPU free to do something else. It won't count for the challenge, but why leave the GPU idle when it can be doing something useful?
Because electricity costs. :D
Details, details...
:)
| |
|
|
The leading edge has passed 14M bits already and the challenge is not over. | |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
A bit shy of 4 days in...
Challenge: Year of the Dog
App: 7 (321-LLR)
(As of 2018-03-20 14:22:26 UTC)
37946 tasks have been sent out. [CPU/GPU/anonymous_platform: 37719 (99%) / 0 (0%) / 227 (1%)]
Of those tasks that have been sent out:
3714 (10%) came back with some kind of an error. [3712 (10%) / 0 (0%) / 2 (0%)]
24635 (65%) have returned a successful result. [24421 (64%) / 0 (0%) / 214 (1%)]
9597 (25%) are still in progress. [9586 (25%) / 0 (0%) / 11 (0%)]
Of the tasks that have been returned successfully:
5943 (24%) are pending validation. [5890 (24%) / 0 (0%) / 53 (0%)]
18554 (75%) have been successfully validated. [18393 (75%) / 0 (0%) / 161 (1%)]
74 (0%) were invalid. [74 (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=14043528. The leading edge was at n=13851056 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 1.39% as much as it had prior to the challenge!
Since the normal number of 321 tasks completed each day is about 300, this challenge is running in excess of 20 times the normal rate. I generally consider 5x a successful challenge, and 10x to be a great challenge. 20x is unprecedented in recent memory.
In the team competition, the battle for 1st and 2nd place has been very tight right from the beginning. Aggie the Pew has been maintaining a small lead over the Czech National Team. In the individual competition, [AF>Amis des Lapins] dthonon has a substantial and probably insurmountable lock on first place.
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
|
Hi there.
* The first time BOINC downloads an 321 task, it may act a little strange and download 4 tasks instead of 1. The run times on this first set of tasks may look a bit strange too. This is normal. This will also occur anytime BOINC downloads more than one task at a time. This can be avoided by setting "Use at most [ 1 ] % of the CPUs" before you download 321 tasks. After one task was downloaded, increase the percentage.
Yesterday I threw in another dual-core machine and actually cared about the setting to only use one core. After the work-unit was downloaded the machine started running it on both cores. I suppose this is not the expected behaviour, is it?
Apart from this:
Great challenge! Our team is fighting for the best internal result, and I expect to end up in sixth place instead of the forth I've been holding up to now. The guy behind me is showing his new machine around town, and it seems it's starting to like places at the top - just like its predecessor which I was barely able to keep at bay in last year's January challenge by throwing in every machine I own. *ggg*
____________
Greetings, Jens
32987968^65536+1 | |
|
dukebgVolunteer tester
 Send message
Joined: 21 Nov 17 Posts: 235 ID: 950482 Credit: 22,083,013 RAC: 0
                 
|
Hi there.
* The first time BOINC downloads an 321 task, it may act a little strange and download 4 tasks instead of 1. The run times on this first set of tasks may look a bit strange too. This is normal. This will also occur anytime BOINC downloads more than one task at a time. This can be avoided by setting "Use at most [ 1 ] % of the CPUs" before you download 321 tasks. After one task was downloaded, increase the percentage.
Yesterday I threw in another dual-core machine and actually cared about the setting to only use one core. After the work-unit was downloaded the machine started running it on both cores. I suppose this is not the expected behaviour, is it?
BOINC is not setting affinity for the spawned processes, so it's natural to have CPU time on different cores, any process would run like that. It's how OSes work. You can manually change affinity of a running process so that its threads stick to one core only. Or use tools that change affinity.
If you haven't set up multithreading, the total CPU time on all the cores the thread runs would be roughly equal to using one core at 100%.
And to be clear, the "use % of CPUs" setting of the BOINC is about how it schedules running and downloading tasks. It doesn't have anything to do with how the tasks themselves would actually run - and couldn't, BOINC client doesn't have control over that. It's just launching some processes with some command line options, all specified by the project and the work unit. That's all it controls. | |
|
|
Thanks for your reply.
When I select 'use 50% of the processors' projects usually use just one core on a dual-core machine. The core changing from one to another and back is not what I'm talking about. Both cores were fully used. So this is not the usual way.
But I think it might have to do with my app_config file which specifies PrimeGrid applications should use two cores. Interesting that this might disturb Boinc settings. ^^
____________
Greetings, Jens
32987968^65536+1 | |
|
dukebgVolunteer tester
 Send message
Joined: 21 Nov 17 Posts: 235 ID: 950482 Credit: 22,083,013 RAC: 0
                 
|
If you have multithreading specified in app_config, the app would run according to it. <cmdline>-t 2</cmdline>? Running on two cores then.
As I said, the "use % of CPUs" setting doesn't have anything to do with it, it only controls how BOINC makes scheduling decisions: "I'm running enough units right now" or "I need to download/run more units as I have free resources", etc. I guess, theoretically, if you have <avg_ncpus>2</avg_ncpus> in app_config, 2 cores in your system and you've set "use % of CPUs" to 50% or lower, then, maybe it shouldn't have run the unit seing that it means allocating more resources than the setting specifies, but I don't think there is code that has a check like that, it would run the unit because it has to run something, it cannot run half of a unit. | |
|
|
It seems that this happens indeed.
Quite interesting. :-)
____________
Greetings, Jens
32987968^65536+1 | |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
After 5 of 7 days:
Challenge: Year of the Dog
App: 7 (321-LLR)
(As of 2018-03-21 18:31:14 UTC)
47523 tasks have been sent out. [CPU/GPU/anonymous_platform: 47205 (99%) / 0 (0%) / 318 (1%)]
Of those tasks that have been sent out:
5666 (12%) came back with some kind of an error. [5664 (12%) / 0 (0%) / 2 (0%)]
33306 (70%) have returned a successful result. [33030 (70%) / 0 (0%) / 276 (1%)]
8551 (18%) are still in progress. [8511 (18%) / 0 (0%) / 40 (0%)]
Of the tasks that have been returned successfully:
5789 (17%) are pending validation. [5736 (17%) / 0 (0%) / 53 (0%)]
27341 (82%) have been successfully validated. [27118 (81%) / 0 (0%) / 223 (1%)]
106 (0%) were invalid. [106 (0%) / 0 (0%) / 0 (0%)]
70 (0%) are inconclusive. [70 (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=14086716. The leading edge was at n=13851056 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 1.70% as much as it had prior to the challenge!
No primes yet, but there's still 48 hours to go. Will you be the lucky one?
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
|
The latest work-units on my i5 have been significantly bigger than the previous ones. Rounded 140k secs vs. 80k secs. with the same settings on my side. Is this just coincidence, or might this be a proper development?
The last one I crunched with different settings to see if those might speed things up, which in fact they did.
____________
Greetings, Jens
32987968^65536+1 | |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
The latest work-units on my i5 have been significantly bigger than the previous ones. Rounded 140k secs vs. 80k secs. with the same settings on my side. Is this just coincidence, or might this be a proper development?
There's nothing I can see about recent tasks that are significantly different than earlier tasks. They all have the FFT size, and I have not noticed any change in run times on my system.
Perhaps there's something else running on your computer that is using CPU cycles.
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
|
Thank you.
I'll look into that. Have to admit I don't know what to look for as that machine is Boinc-only and has been running like that for quite some time. We'll see. :-)
____________
Greetings, Jens
32987968^65536+1 | |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
Our challenges have always been rather fickle when it come to finding primes.
During this year's 321 challenge, we haven't found a 321 prime -- yet. That's despite processing about twenty times as many numbers as normal. If we do find one in the remaining day or so, it will be about 4.2 million digits in length.
Here's the fickle part: during the challenge we DID find a 3.3 million digit GFN-19, which is the second GFN-19 this year after not having found any for over 5 years. And that was after having found the first four in less than 12 months.
And so, of course, now we've also found a 5.1 million digit Woodall prime during the 321 challenge. The last time a Woodall was discovered was over 10 years ago in 2007.
So very fickle!
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
|
And so, of course, now we've also found a 5.1 million digit Woodall prime during the 321 challenge. The last time a Woodall was discovered was over 10 years ago in 2007.
So very fickle!
Congrats PG and especially the finder! | |
|
mackerel Volunteer tester
 Send message
Joined: 2 Oct 08 Posts: 2245 ID: 29980 Credit: 351,187,302 RAC: 352,568
                         
|
Given the randomness maybe I should go to another big prime project after the challenge... | |
|
Keith  Send message
Joined: 8 Dec 13 Posts: 369 ID: 284516 Credit: 316,090,340 RAC: 211,152
                     
|
Given the randomness maybe I should go to another big prime project after the challenge...
I'd suggest running 321 during the Halloween Challenge (WOO) and seeing what happens.
If you do that then someone will probably find an SR5 prime or something.
____________
My Primes
Badge Score: 2*1 + 4*2 + 5*1 + 6*12 + 9*2 + 10*1 = 115
| |
|
|
Given the randomness maybe I should go to another big prime project after the challenge...
and come back from time to time. During the Tour de Prime I walked from GNF 16 to GNF17MEGA and I found a MEGA!
____________
| |
|
|
where are the badges for Year of the Dog ? | |
|
Keith  Send message
Joined: 8 Dec 13 Posts: 369 ID: 284516 Credit: 316,090,340 RAC: 211,152
                     
|
where are the badges for Year of the Dog ?
There are no badges for individual challenges.
There are badges for milestones for individual sub-projects, there are badges (jerseys) for Tour de Primes, and there are new badges for finding primes of certain types and sizes.
____________
My Primes
Badge Score: 2*1 + 4*2 + 5*1 + 6*12 + 9*2 + 10*1 = 115
| |
|
Dave  Send message
Joined: 13 Feb 12 Posts: 2610 ID: 130544 Credit: 821,552,906 RAC: 432,788
                    
|
We could have a badge with different coloured dogs on it. | |
|
|
We could have a badge with different coloured dogs on it.
a pack of husky for the winner ;-) | |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
There's less than 1 day to go!
Challenge: Year of the Dog
App: 7 (321-LLR)
(As of 2018-03-22 19:03:30 UTC)
54633 tasks have been sent out. [CPU/GPU/anonymous_platform: 54262 (99%) / 0 (0%) / 371 (1%)]
Of those tasks that have been sent out:
6257 (11%) came back with some kind of an error. [6255 (11%) / 0 (0%) / 2 (0%)]
40616 (74%) have returned a successful result. [40285 (74%) / 0 (0%) / 331 (1%)]
7760 (14%) are still in progress. [7722 (14%) / 0 (0%) / 38 (0%)]
Of the tasks that have been returned successfully:
5406 (13%) are pending validation. [5360 (13%) / 0 (0%) / 46 (0%)]
34959 (86%) have been successfully validated. [34674 (85%) / 0 (0%) / 285 (1%)]
165 (0%) were invalid. [165 (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=14122412. The leading edge was at n=13851056 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 1.96% as much as it had prior to the challenge!
Is there a 321 prime lurking in the next day's tasks?
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
The end is near! The end of the challenge, that is. So 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. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
|
I'm gonna keep running 321 after the challenge, probably until ESP challenge, since now this challenge has cleared out a lot of composites so the next ones are closer! (how close is impossible to say)
Lets keep trying to find those hiding 321's! :) | |
|
|
I will be doing the same for another week so as to flip to Ruby. It also means helping with the clean-up. | |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
We are done! Final statistics:
Challenge: Year of the Dog
App: 7 (321-LLR)
(As of 2018-03-23 18:05:50 UTC)
60640 tasks have been sent out. [CPU/GPU/anonymous_platform: 60217 (99%) / 0 (0%) / 423 (1%)]
Of those tasks that have been sent out:
7728 (13%) came back with some kind of an error. [7725 (13%) / 0 (0%) / 3 (0%)]
47262 (78%) have returned a successful result. [46873 (77%) / 0 (0%) / 389 (1%)]
5622 (9%) are still in progress. [5591 (9%) / 0 (0%) / 31 (0%)]
Of the tasks that have been returned successfully:
4193 (9%) are pending validation. [4160 (9%) / 0 (0%) / 33 (0%)]
42784 (91%) have been successfully validated. [42428 (90%) / 0 (0%) / 356 (1%)]
204 (0%) were invalid. [204 (0%) / 0 (0%) / 0 (0%)]
81 (0%) are inconclusive. [81 (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=14148473. The leading edge was at n=13851056 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 2.15% as much as it had prior to the challenge!
Alas, no 321 primes this time. Maybe next challenge...
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
|
Thanks a lot to PrimeGrid and all participants for an exciting challenge!
____________
Greetings, Jens
32987968^65536+1 | |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
Cleanup begins:
Mar 23: Year of the Dog: 4150 tasks outstanding; 3228 affecting individual (259) scoring positions; 1104 affecting team (36) scoring positions.
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
|
happy endings
____________
| |
|
|
a little off topic
why the badges of the Tour de prime do not appear in my signature on boinc? | |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
a little off topic
why the badges of the Tour de prime do not appear in my signature on boinc?
You would have to take that up with the proprietor of whatever website is creating your signature.
For the new badges, I did create a badge export xml file specifically for use by sites like those, but I don't know if anyone is using them.
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
Cleanup:
Mar 23: Year of the Dog: 4150 tasks outstanding; 3228 affecting individual (259) scoring positions; 1104 affecting team (36) scoring positions.
Mar 24: Year of the Dog: 2691 tasks outstanding; 1884 affecting individual (232) scoring positions; 676 affecting team (27) scoring positions.
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
a little off topic
why the badges of the Tour de prime do not appear in my signature on boinc?
Assuming this is you: https://signature.statseb.fr/index.py?cpid=523fe4e87eea3229e51e3a76b73e1194
I've already brought this up with Sebastien, who runs that site. Please see this thread for the discussion there: https://signature.statseb.fr/forum/viewtopic.php?id=1227
I believe this is the same Sebastien who runs WUProp, and if so, it's possible he may have abandoned both websites. I hope that's not true, but if it is, I wouldn't expect any changes or enhancements to their signature generator.
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
Cleanup:
Mar 23: Year of the Dog: 4150 tasks outstanding; 3228 affecting individual (259) scoring positions; 1104 affecting team (36) scoring positions.
Mar 24: Year of the Dog: 2691 tasks outstanding; 1884 affecting individual (232) scoring positions; 676 affecting team (27) scoring positions.
Mar 25: Year of the Dog: 1838 tasks outstanding; 1174 affecting individual (202) scoring positions; 421 affecting team (20) scoring positions.
Mar 26: Year of the Dog: 1332 tasks outstanding; 768 affecting individual (166) scoring positions; 306 affecting team (17) scoring positions.
Mar 27: Year of the Dog: 1055 tasks outstanding; 556 affecting individual (139) scoring positions; 48 affecting team (13) scoring positions.
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
nenymSend message
Joined: 23 Apr 09 Posts: 22 ID: 39029 Credit: 936,172,839 RAC: 1,201,382
                    
|
I believe this is the same Sebastien who runs WUProp, and if so, it's possible he may have abandoned both websites. I hope that's not true..... Sebastien who runs WUProp is active http://wuprop.boinc-af.org/forum_thread.php?id=351&postid=6065#6065
| |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
I believe this is the same Sebastien who runs WUProp, and if so, it's possible he may have abandoned both websites. I hope that's not true..... Sebastien who runs WUProp is active http://wuprop.boinc-af.org/forum_thread.php?id=351&postid=6065#6065
Those are automated messages.
The last actual post by Sebastien was in January: http://wuprop.boinc-af.org/forum_thread.php?id=441&postid=5920
It is only two sentences in length, and his final comment is:
I will not support the project anymore.
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
Michael Goetz Volunteer moderator Project administrator Project scientist
 Send message
Joined: 21 Jan 10 Posts: 13044 ID: 53948 Credit: 202,827,216 RAC: 99,194
                        
|
Cleanup:
Mar 23: Year of the Dog: 4150 tasks outstanding; 3228 affecting individual (259) scoring positions; 1104 affecting team (36) scoring positions.
Mar 24: Year of the Dog: 2691 tasks outstanding; 1884 affecting individual (232) scoring positions; 676 affecting team (27) scoring positions.
Mar 25: Year of the Dog: 1838 tasks outstanding; 1174 affecting individual (202) scoring positions; 421 affecting team (20) scoring positions.
Mar 26: Year of the Dog: 1332 tasks outstanding; 768 affecting individual (166) scoring positions; 306 affecting team (17) scoring positions.
Mar 27: Year of the Dog: 1055 tasks outstanding; 556 affecting individual (139) scoring positions; 48 affecting team (13) scoring positions.
Mar 28: Year of the Dog: 795 tasks outstanding; 327 affecting individual (113) scoring positions; 33 affecting team (10) scoring positions.
Mar 29: Year of the Dog: 585 tasks outstanding; 207 affecting individual (91) scoring positions; 20 affecting team (7) scoring positions.
Mar 30: Year of the Dog: 468 tasks outstanding; 166 affecting individual (83) scoring positions; 17 affecting team (7) scoring positions.
Mar 31: Year of the Dog: 252 tasks outstanding; 69 affecting individual (44) scoring positions; 8 affecting team (4) scoring positions.
Apr 1: Year of the Dog: 192 tasks outstanding; 52 affecting individual (37) scoring positions; 8 affecting team (4) scoring positions.
Apr 2: Year of the Dog: 133 tasks outstanding; 38 affecting individual (29) scoring positions; 7 affecting team (4) scoring positions.
Apr 3: Year of the Dog: 109 tasks outstanding; 34 affecting individual (27) scoring positions; 3 affecting team (3) scoring positions.
Apr 4: Year of the Dog: 76 tasks outstanding; 28 affecting individual (22) scoring positions; 3 affecting team (3) scoring positions.
Apr 5: Year of the Dog: 59 tasks outstanding; 24 affecting individual (20) scoring positions; 2 affecting team (2) scoring positions.
Apr 6: Year of the Dog: 41 tasks outstanding; 12 affecting individual (12) scoring positions; 2 affecting team (2) scoring positions.
Apr 7: Year of the Dog: 33 tasks outstanding; 9 affecting individual (9) scoring positions; 2 affecting team (2) scoring positions.
Apr 8: Year of the Dog: 30 tasks outstanding; 7 affecting individual (7) scoring positions; 2 affecting team (2) scoring positions.
Apr 9: Year of the Dog: 21 tasks outstanding; 1 affecting individual (1) scoring positions; 0 affecting team (0) scoring positions.
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!
My lucky number is 75898524288+1 | |
|
RogerVolunteer developer Volunteer tester
 Send message
Joined: 27 Nov 11 Posts: 1135 ID: 120786 Credit: 263,802,193 RAC: 12,688
                    
|
The results are final!
Top 3 individuals:
1: [AF>Amis des Lapins] dthonon
2: Scott Brown
3: zunewantan
Top 3 teams:
1: Aggie The Pew
2: Czech National Team
3: SETI.Germany
Congratulations to the winners, and well done to everyone who participated.
See you at the World Cup Challenge!
____________
| |
|
|
Thanks a lot!
____________
Greetings, Jens
32987968^65536+1 | |
|
Message boards :
Number crunching :
Year of the Dog Challenge |