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1) Message boards : Fermat Divisor Search : Fermat Divisor Search (Message 134080)
Posted 9 hours ago by Profile Michael GoetzProject donor
+-------+-----------+--------------+-----------+-----------+-----------+-------------+-------+---------------+------------+---------------+------------------+---------+ | k | count | leading edge | min n | max n | done | in progress | prime | work total | % of total | work done | work in progress | done % | +-------+-----------+--------------+-----------+-----------+-----------+-------------+-------+---------------+------------+---------------+------------------+---------+ | 5 | 42,020 | 0 | 6,000,055 | 8,999,977 | 0 | 0 | 0 | 217,314.77 | 1.84% | 0.00 | 0.00 | 0.00% | | 7 | 102,889 | 0 | 6,000,030 | 8,999,992 | 0 | 0 | 0 | 531,421.11 | 4.50% | 0.00 | 0.00 | 0.00% | | 9 | 117,377 | 4,900,561 | 4,000,007 | 8,999,977 | 20,794 | 428 | 0 | 471,093.48 | 3.99% | 37,320.02 | 915.76 | 7.92% | | 11 | 115,361 | 4,900,539 | 3,640,001 | 8,999,995 | 27,028 | 387 | 0 | 441,249.63 | 3.74% | 44,793.24 | 829.11 | 10.15% | | 13 | 82,006 | 4,900,546 | 3,640,012 | 8,999,992 | 19,077 | 266 | 0 | 314,515.83 | 2.66% | 31,568.89 | 567.51 | 10.04% | | 15 | 250,904 | 4,900,572 | 3,640,008 | 8,999,992 | 58,668 | 783 | 1 | 960,839.28 | 8.14% | 97,261.07 | 1,678.05 | 10.12% | | 17 | 55,512 | 4,900,503 | 3,640,083 | 8,999,879 | 13,015 | 197 | 0 | 212,473.64 | 1.80% | 21,525.66 | 422.20 | 10.13% | | 19 | 71,734 | 4,900,578 | 3,640,078 | 8,999,994 | 16,561 | 236 | 0 | 274,843.64 | 2.33% | 27,466.27 | 507.03 | 9.99% | | 21 | 196,973 | 4,900,577 | 3,640,005 | 8,999,904 | 45,913 | 617 | 0 | 754,576.90 | 6.39% | 76,087.54 | 1,320.77 | 10.08% | | 23 | 68,607 | 4,900,549 | 3,640,049 | 8,999,969 | 15,919 | 231 | 1 | 262,745.16 | 2.23% | 26,366.33 | 494.86 | 10.03% | | 25 | 180,878 | 4,900,564 | 3,640,124 | 8,999,992 | 42,391 | 597 | 2 | 691,769.81 | 5.86% | 70,246.18 | 1,281.80 | 10.15% | | 27 | 54,018 | 4,900,579 | 3,640,067 | 8,999,975 | 12,765 | 142 | 0 | 206,566.99 | 1.75% | 21,160.54 | 304.55 | 10.24% | | 29 | 180,586 | 4,900,563 | 3,640,011 | 8,999,975 | 42,238 | 600 | 2 | 690,342.79 | 5.85% | 70,008.77 | 1,286.35 | 10.14% | | 31 | 65,977 | 4,900,544 | 3,640,184 | 8,999,984 | 15,462 | 197 | 1 | 251,846.51 | 2.13% | 25,657.26 | 421.93 | 10.19% | | 33 | 168,601 | 4,900,566 | 3,640,021 | 8,999,980 | 39,294 | 568 | 1 | 646,353.19 | 5.47% | 65,158.82 | 1,217.57 | 10.08% | | 35 | 171,853 | 4,900,545 | 3,640,047 | 8,999,991 | 40,192 | 528 | 0 | 657,286.06 | 5.57% | 66,594.97 | 1,132.99 | 10.13% | | 37 | 216,556 | 4,900,576 | 3,640,020 | 8,999,990 | 50,485 | 727 | 1 | 828,856.83 | 7.02% | 83,732.12 | 1,559.91 | 10.10% | | 39 | 280,504 | 4,900,567 | 3,640,022 | 8,999,998 | 65,576 | 927 | 2 | 1,074,037.61 | 9.10% | 108,818.76 | 1,986.21 | 10.13% | | 41 | 74,489 | 4,900,571 | 3,640,039 | 8,999,891 | 17,222 | 257 | 0 | 285,370.77 | 2.42% | 28,564.33 | 551.29 | 10.01% | | 43 | 139,545 | 4,900,572 | 3,640,028 | 8,999,984 | 32,433 | 422 | 0 | 534,851.92 | 4.53% | 53,807.58 | 903.83 | 10.06% | | 45 | 214,906 | 4,900,578 | 3,640,007 | 8,999,993 | 50,094 | 689 | 1 | 822,180.88 | 6.96% | 83,064.89 | 1,477.28 | 10.10% | | 47 | 16,079 | 4,900,399 | 3,640,711 | 8,999,131 | 3,760 | 42 | 0 | 61,637.68 | 0.52% | 6,258.64 | 90.30 | 10.15% | | 49 | 103,661 | 4,900,194 | 3,640,042 | 8,999,970 | 24,060 | 313 | 1 | 396,680.48 | 3.36% | 39,918.53 | 670.50 | 10.06% | | 1323 | 62,338 | 3,321,986 | 1,550,006 | 3,321,986 | 62,338 | 0 | 3 | 34,843.24 | 0.30% | 34,843.24 | 0.00 | 100.00% | | 2187 | 40,335 | 3,321,996 | 1,550,046 | 3,321,996 | 40,335 | 0 | 1 | 22,569.75 | 0.19% | 22,569.75 | 0.00 | 100.00% | | 3125 | 33,424 | 3,321,963 | 1,550,043 | 3,321,963 | 33,424 | 0 | 4 | 18,673.38 | 0.16% | 18,673.38 | 0.00 | 100.00% | | 3267 | 28,673 | 3,321,930 | 1,550,050 | 3,321,930 | 28,673 | 0 | 2 | 16,025.52 | 0.14% | 16,025.52 | 0.00 | 100.00% | | 3375 | 69,918 | 3,321,986 | 1,550,015 | 3,321,986 | 69,918 | 0 | 1 | 39,145.95 | 0.33% | 39,145.95 | 0.00 | 100.00% | | 19683 | 167,631 | 4,000,000 | 300,002 | 4,000,000 | 167,631 | 0 | 8 | 87,373.15 | 0.74% | 87,373.15 | 0.00 | 100.00% | | NULL | 3,373,355 | 4,900,579 | 300,002 | 8,999,998 | 1,055,266 | 9,154 | 32 | 11,807,485.94 | 100.00% | 1,304,011.39 | 19,619.79 | 11.04% | +-------+-----------+--------------+-----------+-----------+-----------+-------------+-------+---------------+------------+---------------+------------------+---------+ +--------------+--------------+-------------+-----------+-------------+------------+----------+-----------+----------+ | Leading Edge | 19683 starts | 5 k's start | 5 k's end | 11-49 start | 19683 ends | 9 starts | 5-7 start | 5-49 end | +--------------+--------------+-------------+-----------+-------------+------------+----------+-----------+----------+ | 11.21% | 0.00% | 0.04% | 1.54% | 1.67% | 3.90% | 3.90% | 24.62% | 100% | +--------------+--------------+-------------+-----------+-------------+------------+----------+-----------+----------+



11% done!

32 primes have been discovered.

18 xGF (Extended Generalized Fermat) divisors have been found.

5 GF (Generalized Fermat) divisors have been found.

No Fermat divisors have been found... yet.
2) Message boards : Problems and Help : outdated reference on Prime Grid web site -- on editing preferences (Message 134052)
Posted 1 day ago by Profile Michael GoetzProject donor
https://developer.amd.com/amd-accelerated-parallel-processing-app-sdk/

Not found

Is this still applicable?
Referenced on prime Grid web page when editing project preferences.

Please update web site.
Thank you!!!!
Jay


I don't use AMD GPUs. Nor does Jim. Someone else will need to answer that question. I can easily update the information on the preferences page, but I need to know what to put there.
3) Message boards : Number crunching : 50 years First ARPANET Connection Challenge (Message 134017)
Posted 2 days ago by Profile Michael GoetzProject donor
For those of us in the affected timezone, or other timezones that may have a daylight savings change, be aware this will start 24th 01:00BST (& end 29th 00:00UT).


Under the European system for summer time ("daylight saving time"), summer time ends on 01:00 UTC the last Sunday of October (which is October 27 this year). So in all time zones in Europe that follow this rule (EU and some nearby countries), clocks will be set back in the same moment. /JeppeSN


This is why we display the current UTC time on the front page! :)

EDIT:: True story. Summer time / daylight saving time ends one week later in the U.S. The reason? About 20 years ago, President George W. Bush decided to have DST end one week later so that there would be one more hour of daylight on Halloween (Oct 31st.)

This way, it would be safer for the kids when they go Trick-or-Treating.

That's not such a terrible idea at first glance. However, the actual effect of having one more week of summer time was -- you probably have guessed this -- the kids went Trick-or-Treating one hour later.
4) Message boards : Aggie The Pew message board (Message 133999)
Posted 3 days ago by Profile Michael GoetzProject donor
I suppose I'm asking if anyone can tell me how much cache does one WU of 321 take up?


It doesn't matter how much cache it's using. Use all the cores.

These are long tasks, and the relative efficiency of x threads vs. y threads isn't nearly as important as how long a single task takes to run.

Long tasks, and a short challenge. You don't want to have 4 tasks 99% complete when the challenge ends. Use all the (physical) cores to run one task at a time. (Unless, perhaps, you have a LOT of cores.) That way, you'll have fewer tasks (i.e., just one) that won't make the deadline.

On an AVX512 droplet, -t3 is 5% less efficient than -t1. But I'll be running them -t3. The quads will be running -t4.
5) Message boards : Number crunching : Suggestions for 2020 Challenges (Message 133990)
Posted 3 days ago by Profile Michael GoetzProject donor
dthonon wrote:
I like the idea of GFN-17LOW, to finish the sub-project, but it is probably too early for 2020. When we get closer to the end, we could imagine an open-ended challenge that stops when there are no WUs left.


Thanks for pointing out that this is too soon. This is for everyone else who has ever suggested a "Let's finish GFN-17-LOW challenge":

I love the idea of finishing things, but... algebra!

We started doing 17-low in June of 2015.
After 1 year b was at 4.3M
After 2 years b was at 8.7M
After 3 years b was at 12M
After a bit more than 4 years, today it's at 16M.

It's consistently progressing at about 4M per year.

It ends at 42,597,774.

(Literally) You do the math.

A 5 or 10 day challenge isn't going to do six and a half years' worth of work.

That being said, challenge-wise, 17-Low hasn't gotten a lot of love. It's only been in a single 3-day challenge. That was in 2017. Then again, if you look at individual GFN projects, they're spread thin because there's so many of them (and most only started in late 2015):

15: 1 challenge, 3 days (2017)
16: 1 challenge, 3 days (2017)
17-low: 1 challenge, 3 days (2017)
17-mega: 1 challenge, 3 days (2016)
18: 1 challenge, 3 days (2016)
19: 2 challenges, 6 days (2012, 2016)
20: 4 challenges, 39 days (2013, 2014, 2015, 2016)
21: 2 challenges, 18 days (2016, 2018, planned for 2019)
22: 3 challenges, 26 days (2014, 2015, 2016, planned for 2019)
DYFL: (planned for 2019)

The last challenge of 2019 will be a 10 day challenge for 21, 22, and DYFL.

There's a lot more challenges for the higher numbers. That's not because someone here likes them better. Originally our GPU software was very limited and couldn't run most of the GFN ranges, so only the large ranges were on BOINC. That changed in late 2015.

In 2012, only 19 was available.
In 2013, 2014, and 2105, only 20 and 22 were available.
Starting in 2015, everything except DYFL was available. DYFL started in 2019.
6) Message boards : Number crunching : World Maths Day Challenge (Message 133987)
Posted 3 days ago by Profile Michael GoetzProject donor
It's cleanup time! This should be a quick cleanup. 2 to 4 weeks, most likely.


World Maths Day Cleanup:
Oct 15: World Maths Day: 33624 tasks outstanding; 25620 affecting individual (288) scoring positions; 9295 affecting team (59) scoring positions.
Oct 16: World Maths Day: 17381 tasks outstanding; 11405 affecting individual (270) scoring positions; 2201 affecting team (36) scoring positions.
Oct 17: World Maths Day: 11486 tasks outstanding; 6056 affecting individual (237) scoring positions; 1279 affecting team (29) scoring positions.
Oct 18: World Maths Day: 8103 tasks outstanding; 3792 affecting individual (212) scoring positions; 224 affecting team (19) scoring positions.
Oct 19: World Maths Day: 4565 tasks outstanding; 1648 affecting individual (164) scoring positions; 70 affecting team (10) scoring positions.
Oct 20: World Maths Day: 1803 tasks outstanding; 401 affecting individual (76) scoring positions; 10 affecting team (4) scoring positions.
7) Message boards : Number crunching : Suggestions for 2020 Challenges (Message 133983)
Posted 4 days ago by Profile Michael GoetzProject donor
Are PRPnet projects on the table?


No, this is a BOINC challenge series. We used to also run PRPNet challenges, but there are not a lot of PRPNet projects left. The rules, of course, were different.
8) Message boards : Fermat Divisor Search : Fermat Divisor Search (Message 133972)
Posted 4 days ago by Profile Michael GoetzProject donor
+-------+-----------+--------------+-----------+-----------+-----------+-------------+-------+---------------+------------+---------------+------------------+---------+ | k | count | leading edge | min n | max n | done | in progress | prime | work total | % of total | work done | work in progress | done % | +-------+-----------+--------------+-----------+-----------+-----------+-------------+-------+---------------+------------+---------------+------------------+---------+ | 5 | 42,020 | 0 | 6,000,055 | 8,999,977 | 0 | 0 | 0 | 217,314.77 | 1.84% | 0.00 | 0.00 | 0.00% | | 7 | 102,889 | 0 | 6,000,030 | 8,999,992 | 0 | 0 | 0 | 531,421.11 | 4.50% | 0.00 | 0.00 | 0.00% | | 9 | 117,377 | 4,826,443 | 4,000,007 | 8,999,977 | 18,383 | 1,100 | 0 | 471,093.48 | 3.99% | 32,301.41 | 2,206.52 | 6.86% | | 11 | 115,361 | 4,826,457 | 3,640,001 | 8,999,995 | 24,786 | 1,001 | 0 | 441,249.63 | 3.74% | 40,123.22 | 2,009.03 | 9.09% | | 13 | 82,006 | 4,826,312 | 3,640,012 | 8,999,992 | 17,571 | 667 | 0 | 314,515.83 | 2.66% | 28,433.55 | 1,335.13 | 9.04% | | 15 | 250,904 | 4,826,454 | 3,640,008 | 8,999,992 | 53,816 | 2,179 | 1 | 960,839.28 | 8.14% | 87,152.31 | 4,379.83 | 9.07% | | 17 | 55,512 | 4,826,331 | 3,640,083 | 8,999,879 | 11,972 | 485 | 0 | 212,473.64 | 1.80% | 19,356.53 | 972.51 | 9.11% | | 19 | 71,734 | 4,826,218 | 3,640,078 | 8,999,994 | 15,197 | 570 | 0 | 274,843.64 | 2.33% | 24,624.84 | 1,140.91 | 8.96% | | 21 | 196,973 | 4,826,437 | 3,640,005 | 8,999,904 | 42,109 | 1,703 | 0 | 754,576.90 | 6.39% | 68,163.20 | 3,419.46 | 9.03% | | 23 | 68,607 | 4,826,369 | 3,640,049 | 8,999,969 | 14,611 | 562 | 1 | 262,745.16 | 2.23% | 23,638.28 | 1,128.81 | 9.00% | | 25 | 180,878 | 4,826,392 | 3,640,124 | 8,999,992 | 38,817 | 1,584 | 2 | 691,769.81 | 5.86% | 62,805.79 | 3,176.03 | 9.08% | | 27 | 54,018 | 4,826,455 | 3,640,067 | 8,999,975 | 11,895 | 282 | 0 | 206,566.99 | 1.75% | 19,330.59 | 569.32 | 9.36% | | 29 | 180,586 | 4,826,453 | 3,640,011 | 8,999,975 | 38,758 | 1,576 | 2 | 690,342.79 | 5.85% | 62,769.63 | 3,158.20 | 9.09% | | 31 | 65,977 | 4,826,328 | 3,640,184 | 8,999,984 | 14,186 | 578 | 1 | 251,846.51 | 2.13% | 23,000.99 | 1,160.13 | 9.13% | | 33 | 168,601 | 4,826,433 | 3,640,021 | 8,999,980 | 36,046 | 1,469 | 1 | 646,353.19 | 5.47% | 58,394.82 | 2,949.23 | 9.03% | | 35 | 171,853 | 4,826,415 | 3,640,047 | 8,999,991 | 36,960 | 1,476 | 0 | 657,286.06 | 5.57% | 59,868.30 | 2,963.96 | 9.11% | | 37 | 216,556 | 4,826,452 | 3,640,020 | 8,999,990 | 46,230 | 1,883 | 1 | 828,856.83 | 7.02% | 74,880.60 | 3,769.13 | 9.03% | | 39 | 280,504 | 4,826,454 | 3,640,022 | 8,999,998 | 60,042 | 2,509 | 2 | 1,074,037.61 | 9.10% | 97,301.07 | 5,033.87 | 9.06% | | 41 | 74,489 | 4,826,327 | 3,640,039 | 8,999,891 | 15,790 | 636 | 0 | 285,370.77 | 2.42% | 25,583.09 | 1,274.71 | 8.96% | | 43 | 139,545 | 4,826,448 | 3,640,028 | 8,999,984 | 29,748 | 1,195 | 0 | 534,851.92 | 4.53% | 48,215.53 | 2,397.10 | 9.01% | | 45 | 214,906 | 4,826,432 | 3,640,007 | 8,999,993 | 45,889 | 1,915 | 1 | 822,180.88 | 6.96% | 74,323.52 | 3,832.97 | 9.04% | | 47 | 16,079 | 4,826,119 | 3,640,711 | 8,999,131 | 3,450 | 104 | 0 | 61,637.68 | 0.52% | 5,610.77 | 206.68 | 9.10% | | 49 | 103,661 | 4,826,386 | 3,640,042 | 8,999,970 | 22,044 | 905 | 1 | 396,680.48 | 3.36% | 35,722.11 | 1,814.55 | 9.01% | | 1323 | 62,338 | 3,321,986 | 1,550,006 | 3,321,986 | 62,338 | 0 | 3 | 34,843.24 | 0.30% | 34,843.24 | 0.00 | 100.00% | | 2187 | 40,335 | 3,321,996 | 1,550,046 | 3,321,996 | 40,335 | 0 | 1 | 22,569.75 | 0.19% | 22,569.75 | 0.00 | 100.00% | | 3125 | 33,424 | 3,321,963 | 1,550,043 | 3,321,963 | 33,424 | 0 | 4 | 18,673.38 | 0.16% | 18,673.38 | 0.00 | 100.00% | | 3267 | 28,673 | 3,321,930 | 1,550,050 | 3,321,930 | 28,673 | 0 | 2 | 16,025.52 | 0.14% | 16,025.52 | 0.00 | 100.00% | | 3375 | 69,918 | 3,321,986 | 1,550,015 | 3,321,986 | 69,918 | 0 | 1 | 39,145.95 | 0.33% | 39,145.95 | 0.00 | 100.00% | | 19683 | 167,631 | 4,000,000 | 300,002 | 4,000,000 | 167,631 | 0 | 8 | 87,373.15 | 0.74% | 87,373.15 | 0.00 | 100.00% | | NULL | 3,373,355 | 4,826,457 | 300,002 | 8,999,998 | 1,000,619 | 24,379 | 32 | 11,807,485.94 | 100.00% | 1,190,231.13 | 48,898.08 | 10.08% | +-------+-----------+--------------+-----------+-----------+-----------+-------------+-------+---------------+------------+---------------+------------------+---------+ +--------------+--------------+-------------+-----------+-------------+------------+----------+-----------+----------+ | Leading Edge | 19683 starts | 5 k's start | 5 k's end | 11-49 start | 19683 ends | 9 starts | 5-7 start | 5-49 end | +--------------+--------------+-------------+-----------+-------------+------------+----------+-----------+----------+ | 10.49% | 0.00% | 0.04% | 1.54% | 1.67% | 3.90% | 3.90% | 24.62% | 100% | +--------------+--------------+-------------+-----------+-------------+------------+----------+-----------+----------+


We are 10% done!

32 primes have been discovered.

More than 14 xGF (Extended Generalized Fermat) divisors have been found.

More than 3 GF (Generalized Fermat) divisors have been found.

No Fermat divisors have been found... that we know of.

The most recent prime is still being tested for divisors, so the GF and xGF counts are going to increase, and we won't know until it's done if it's a Fermat divisor.
9) Message boards : Number crunching : World Maths Day Challenge (Message 133951)
Posted 4 days ago by Profile Michael GoetzProject donor
It's cleanup time! This should be a quick cleanup. 2 to 4 weeks, most likely.


World Maths Day Cleanup:
Oct 15: World Maths Day: 33624 tasks outstanding; 25620 affecting individual (288) scoring positions; 9295 affecting team (59) scoring positions.
Oct 16: World Maths Day: 17381 tasks outstanding; 11405 affecting individual (270) scoring positions; 2201 affecting team (36) scoring positions.

Extrapolation :
17/10/2019 8985 18/10/2019 4644 19/10/2019 2401 20/10/2019 1241 21/10/2019 642 22/10/2019 332 23/10/2019 171 24/10/2019 89


That only works until there's only a small number remaining. Then you're at the mercy of individual tasks at computers that are running only briefly each day, or have stopped running and will timeout.

The rule of thumb I use is that the cleanup will last between 3 and 6 times the task deadline. With a four day deadline the estimate is 12 to 24 days.
10) Message boards : Number crunching : World Maths Day Challenge (Message 133945)
Posted 4 days ago by Profile Michael GoetzProject donor
It's cleanup time! This should be a quick cleanup. 2 to 4 weeks, most likely.


World Maths Day Cleanup:
Oct 15: World Maths Day: 33624 tasks outstanding; 25620 affecting individual (288) scoring positions; 9295 affecting team (59) scoring positions.
Oct 16: World Maths Day: 17381 tasks outstanding; 11405 affecting individual (270) scoring positions; 2201 affecting team (36) scoring positions.


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