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1) Message boards : Number crunching : Suggestions for 2020 Challenges (Message 133983)
Posted 4 hours 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.
2) Message boards : Fermat Divisor Search : Fermat Divisor Search (Message 133972)
Posted 12 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 | 4,826,443 | 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.
3) Message boards : Number crunching : World Maths Day Challenge (Message 133951)
Posted 20 hours 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.
4) Message boards : Number crunching : World Maths Day Challenge (Message 133945)
Posted 21 hours 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.
5) Message boards : Number crunching : World Maths Day Challenge (Message 133932)
Posted 1 day ago by Profile Michael GoetzProject donor
Note to anyone using cloud server for the first time:

You must completely delete/destroy a cloud server to stop getting charged for it. Turning it off is not sufficient.

Depending on which service you're using, there may be other resources you need to delete too.

On Digital Ocean, you get charged for droplets (even if they're turned off), and images, snapshots, and backups. You do NOT get charged for firewalls.


Thanks for the reminder! FYI if you have a Digital Ocean Promo code I'd be happy to use it! :)


The promo codes (which give you $50 credit, which is good for 30 days), is only usable when you sign up. If you haven't signed up yet, this is the code: https://m.do.co/c/fa7ff04dc84d.
6) Message boards : Aggie The Pew message board (Message 133929)
Posted 1 day ago by Profile Michael GoetzProject donor
Note to anyone using cloud server for the first time:

You must completely delete/destroy a cloud server to stop getting charged for it. Turning it off is not sufficient.

Depending on which service you're using, there may be other resources you need to delete too.

On Digital Ocean, you get charged for droplets (even if they're turned off), and images, snapshots, and backups. You do NOT get charged for firewalls.
7) Message boards : Number crunching : World Maths Day Challenge (Message 133928)
Posted 1 day ago by Profile Michael GoetzProject donor
Note to anyone using cloud server for the first time:

You must completely delete/destroy a cloud server to stop getting charged for it. Turning it off is not sufficient.

Depending on which service you're using, there may be other resources you need to delete too.

On Digital Ocean, you get charged for droplets (even if they're turned off), and images, snapshots, and backups. You do NOT get charged for firewalls.
8) Message boards : Number crunching : World Maths Day Challenge (Message 133927)
Posted 1 day 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.
9) Message boards : Number crunching : World Maths Day Challenge (Message 133921)
Posted 1 day ago by Profile Michael GoetzProject donor
We're done!


Challenge: World Maths Day
App: 32 (PPS-DIV)
(As of 2019-10-15 18:01:51 UTC)

558940 tasks have been sent out. [CPU/GPU/anonymous_platform: 556472 (100%) / 0 (0%) / 2468 (0%)]

Of those tasks that have been sent out:

34350 (6%) were aborted. [33830 (6%) / 0 (0%) / 520 (0%)]
3870 (1%) came back with some kind of an error. [3870 (1%) / 0 (0%) / 0 (0%)]
477989 (86%) have returned a successful result. [476049 (85%) / 0 (0%) / 1940 (0%)]
42507 (8%) are still in progress. [42498 (8%) / 0 (0%) / 8 (0%)]

Of the tasks that have been returned successfully:

34992 (7%) are pending validation. [34832 (7%) / 0 (0%) / 160 (0%)]
442184 (93%) have been successfully validated. [440404 (92%) / 0 (0%) / 1780 (0%)]
724 (0%) were invalid. [724 (0%) / 0 (0%) / 0 (0%)]
89 (0%) are inconclusive. [89 (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=4794753. The leading edge was at n=4300358 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 11.50% as much as it had prior to the challenge!


All told, 5 primes were discovered, 5 xGF (Extended Generalized Fermat) divisors were found, and 2 GF (Generalized Fermat) divisors were found. No Fermat divisors were found.
10) Message boards : Number crunching : Better multi-threading (Message 133914)
Posted 1 day ago by Profile Michael GoetzProject donor
What does the setting "Max # of simultaneous PrimeGrid tasks" mean?
    a) per-host limit of tasks in progress
    b) same as app_config::project_max_concurrent
    c) something else


Thanks in advance.

--------
PS, I could simply test, but then I will learn about the implementation, not about the design. By a Q&A here, everybody gets educated about the latter. :-) ... OK, I'm just a little lazy.
PPS, at projects with similar plan_class=mt related settings, it is the per-host limit of tasks in progress. Except at LHC@home; they have a bogus MT setup which does something completely different from what it was meant to do.



Both A & B. Note that this means simultaneous PRIMEGRID tasks, in both cases. This should be "no limit" for all users, UNLESS you are simultaneously running both PrimeGrid and non-PrimeGrid tasks. In this scenario, this control lets you split the number of tasks between PrimeGrid and nont-Primegrid.


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