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drummers-lowrise
1) Message boards : Generalized Fermat Prime Search : Guessing the future of GFN-22 and DYFL (Message 147096)
Posted 267 days ago by HomefarmProject donor
Given that a 3090 can run GFN22 in about 14 hrs, but DYFL will run in about 15.5 hrs, which sub project would you choose and which is more "likely" to have a chance of a prime, however remote?
2) Message boards : Generalized Fermat Prime Search : Genefer 3.3.5 is live! (Message 146243)
Posted 287 days ago by HomefarmProject donor
GFN-16 CPU tasks, my timings.

I9 10980XE 18 tasks concurrent 710 secs, equivalent 39 secs / task

3950X 16 tasks concurrent 611 secs, equivalent 38 secs / task

3090 GPU single task 48 secs running in 3950X with Pcie 4 SSD timing.

Timings vary of course, these are example results.
3) Message boards : Wieferich and Wall-Sun-Sun Prime Search : WW project is live (Message 146049)
Posted 291 days ago by HomefarmProject donor
it helps, Thank You ...

I have a question, why there is ... difference between finds and primes ... ???

regards, Grzegorz Roman Granowski ...


Hi Grzegorz,

Every prime number in the test range for each task is tested to see if it is a Wieferich and/or Wall-Sun-Sun prime. For each prime there is a calculation performed which results in a remainder in almost all cases. In the cases where the remainder is equal to zero then we have found a Wieferich or a Wall-Sun-Sun prime, but sometimes the remainder will be very close to zero, and those cases are interesting as well, so those will be counted as "finds". The find in this case is still a prime number, but the prime number itself is fairly small and not interesting; it is the property of that prime that is interesting.

On average, the remainder will be half of the prime being tested (so in the case of a test at 88P, the average remainder will be 4.4 x 1016, and the chances of a prime being a Wieferich or a Wall-Sun-Sun prime is 1/p, so 1 in 8.8 x 1016 at 88P depth. They are extremely rare, which is why it is interesting when the remainder is small. The probability of the remainder being within 10 of zero is still only 1 in 4.4 x 1015 at 88P depth.

Earlier I wrote an example of the math performed for the Wieferich search that may help understand it a bit more. The Wieferich search is looking for prime numbers that, when squared, divide evenly into 2p-1-1. The smallest know example of this is 1093. 10932 divides 21092-1 evenly, leaving no remainder.

These numbers are pretty big, so I have a better example with a different base, but same concept.

In this case the base is 3 instead of 2, and the prime is 11 instead of 1093.

310-1 = 59048
112 = 121
59048 divided by 121 is 488 and there is no remainder, so 3 and 11 make a Wieferich pair in base 3.

Wall-Sun-Sun is more complex than this, but a lot of the same probabilities apply :)

Regards,
Kellen


Kellen, thank you, that's very helpful to a non-mathematical brain like mine. As long as I count my cows I'm pretty happy LoL.

However I very much enjoy the team spirited search and competition in the PG projects. Excellent stuff!
4) Message boards : Number crunching : Rtx 30 series (Message 145300)
Posted 307 days ago by HomefarmProject donor
GFN 22 Same GPU as DYFL below, and very similar timing.
I believe the 3000 series are low ability on FP64 (?)

genefer22_29583047_8

Workunit 681452482
Created 16 Nov 2020 | 10:09:27 UTC
Sent 17 Nov 2020 | 3:20:37 UTC
Received 17 Nov 2020 | 17:20:35 UTC
Server state Over
Outcome Success
Client state Done
Exit status 0 (0x00000000)
Computer ID 978470
Report deadline 9 Dec 2020 | 4:20:37 UTC
Run time 50,251.96
CPU time 586.98
Validate state Initial
Credit 0.00
Application version Genefer 22 v3.21 (OCLcudaGFNWR)
Stderr output
<core_client_version>7.16.11</core_client_version>
<![CDATA[
<stderr_txt>
geneferocl 3.3.3-2 (Windows/OpenCL/32-bit)

Copyright 2001-2018, Yves Gallot
Copyright 2009, Mark Rodenkirch, David Underbakke
Copyright 2010-2012, Shoichiro Yamada, Ken Brazier
Copyright 2011-2014, Michael Goetz, Ronald Schneider
Copyright 2011-2018, Iain Bethune
Genefer is free source code, under the MIT license.

Running on platform 'NVIDIA CUDA', device 'GeForce RTX 3090', vendor 'NVIDIA Corporation', version 'OpenCL 1.2 CUDA' and driver '456.71'.
82 computeUnits @ 1695MHz, memSize=24576MB, cacheSize=2296kB, cacheLineSize=128B, localMemSize=48kB, maxWorkGroupSize=1024.
Supported transform implementations: ocl ocl2 ocl3 ocl4 ocl5

Command line: projects/www.primegrid.com/geneferocl_windows_3.3.3-2.exe -boinc -q 182870^4194304+1

Normal priority change succeeded.
Checking available transform implementations...
A benchmark is needed to determine best transform, testing available transform implementations...
Testing OCL transform...
Testing OCL2 transform...
Testing OCL3 transform...
Testing OCL4 transform...
Testing OCL5 transform...
Benchmarks completed (17.343 seconds).
Using OCL5 transform
Starting initialization...
Initialization complete (52.324 seconds).
Testing 182870^4194304+1...
Estimated time for 182870^4194304+1 is 13:30:00
182870^4194304+1 is complete. (22071026 digits) (err = 0.0000) (time = 13:57:12) 17:20:29
17:20:29 (18160): called boinc_finish(0)

</stderr_txt>
]]>
5) Message boards : Number crunching : Rtx 30 series (Message 145288)
Posted 307 days ago by HomefarmProject donor
HI, Having acquired a RTX 3090 (PNY XLR8) I am benchmarking GFN tasks.
Interestingly the DYFL returned 56220 secs.
The 3090 GPU Framebuffer was 81% in use, with 99% application usage. (from Afterburner)

The CPU, I9 10980XE, was 50% (all cores) committed to World Community Grid tasks whilst this DYFL was running.

Name genefer_extreme_39824598_0
Workunit 684223025
Created 9 Nov 2020 | 14:05:05 UTC
Sent 16 Nov 2020 | 11:45:55 UTC
Received 17 Nov 2020 | 3:23:05 UTC
Server state Over
Outcome Success
Client state Done
Exit status 0 (0x00000000)
Computer ID 978470
Report deadline 8 Dec 2020 | 12:45:55 UTC
Run time 56,220.15
CPU time 1,093.52
Validate state Initial
Credit 0.00
Application version Do You Feel Lucky? v3.21 (OCLcudaGFNEXTREME)
Stderr output
<core_client_version>7.16.11</core_client_version>
<![CDATA[
<stderr_txt>
geneferocl 3.3.3-2 (Windows/OpenCL/32-bit)

Copyright 2001-2018, Yves Gallot
Copyright 2009, Mark Rodenkirch, David Underbakke
Copyright 2010-2012, Shoichiro Yamada, Ken Brazier
Copyright 2011-2014, Michael Goetz, Ronald Schneider
Copyright 2011-2018, Iain Bethune
Genefer is free source code, under the MIT license.

Running on platform 'NVIDIA CUDA', device 'GeForce RTX 3090', vendor 'NVIDIA Corporation', version 'OpenCL 1.2 CUDA' and driver '456.71'.
82 computeUnits @ 1695MHz, memSize=24576MB, cacheSize=2296kB, cacheLineSize=128B, localMemSize=48kB, maxWorkGroupSize=1024.
Supported transform implementations: ocl ocl2 ocl3 ocl4 ocl5

Command line: projects/www.primegrid.com/geneferocl_windows_3.3.3-2.exe -boinc -q 921096^4194304+1

Normal priority change succeeded.
Checking available transform implementations...
OCL transform is past its b limit.
OCL4 transform is past its b limit.
A benchmark is needed to determine best transform, testing available transform implementations...
Testing OCL2 transform...
Testing OCL3 transform...
Testing OCL5 transform...
Benchmarks completed (11.799 seconds).
Using OCL3 transform
Starting initialization...
Initialization complete (53.165 seconds).
Testing 921096^4194304+1...
Estimated time for 921096^4194304+1 is 15:40:00
921096^4194304+1 is complete. (25016108 digits) (err = 0.0000) (time = 15:36:47) 03:22:57
03:22:57 (3272): called boinc_finish(0)

</stderr_txt>
]]>
6) Message boards : Number crunching : So Long, and Thanks for All the Fish (Message 138653)
Posted 564 days ago by HomefarmProject donor
As an "old-timer" who started in computers in 1964, IBM 1400, 360, Honeywell 200 etc etc, BUT less than 1 year yet on Primegrid; I would like to say again what a terrific setup PG is.

Thank you both, you deserve a break from PG duties.

Hope you enjoy your next projects, there's no such thing as retirement............
7) Message boards : Number crunching : 2020 Mega Primes (Message 137521)
Posted 590 days ago by HomefarmProject donor
2020 records to reach:
- Beat each month's records: Jan-Feb
- Beat 2019 year's records: 92 to go
- Found 130 MP: 106 to go
- Reach the 500 Mega Primes overall: 71 to go
- Found 2 primes in ESP, TRP, PSP or SOB projects: 2 to go

February (2020/2019/Best overall): 10/19/19


2020 Mega Prime Summary by Month:
+----------+-----------------------------------------------------------------------+-------+ | | MP# | | | Project |-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+ Total | | | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | | +----------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-------+ | GFN-17 | 5 | 5 | | | | | | | | | | | 10 | | GFN-18 | 1 | | | | | | | | | | | | 1 | | PPS-DIV | 2 | | | | | | | | | | | | 2 | | PPS-MEGA | 6 | 5 | | | | | | | | | | | 11 | +----------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-------+ | Total | 14 | 10 | | | | | | | | | | | 24 | +----------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-------+ | 2019 | 4 | 19 | 9 | 10 | 5 | 8 | 5 | 7 | 16 | 13 | 11 | 9 | 116 | | 2018 | 7 | 16 | 14 | 4 | 6 | 7 | 5 | 5 | 9 | 8 | 5 | 7 | 93 | | 2017 | 2 | 10 | 6 | 4 | 6 | 4 | 3 | 9 | 4 | 5 | 4 | 4 | 61 | | 2016 | 2 | 6 | 5 | 1 | 4 | 7 | 2 | 4 | 3 | 8 | 8 | 3 | 53 | | 2015 | 3 | 2 | 2 | 1 | 3 | 1 | 0 | 1 | 1 | 2 | 2 | | 18 | | 2014 | 3 | 1 | 3 | 3 | 1 | 4 | 5 | 2 | 2 | 3 | 1 | 1 | 29 | | 2013 | | | | | | | | | | 2 | | 3 | 5 | | 2012 | 2 | 3 | | 1 | | 3 | | 1 | | 1 | 1 | | 12 | | 2011 | 1 | 2 | 1 | 1 | 4 | | | | | 1 | 1 | | 11 | | 2010 | | | | 1 | | | | | | | 1 | | 2 | | 2009 | | | | 2 | | | 1 | | | | | | 3 | | 2008 | | | 1 | | | | | | | | | | 1 | | 2007 | | | | | | | | | | | | 1 | 1 | +----------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-------+ | Total | 38 | 69 | 41 | 28 | 29 | 34 | 21 | 29 | 35 | 43 | 34 | 28 | 429 | +----------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-------+

2020 Mega Prime Summary by Projects:
+----------+-----------------------------------------------------------------------------------------------+-------+ | | MP# | | | Project |-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+ Total | | | 121 | 321 | CUL | DIV | ESP | GCW | G17 | G18 | G19 | G20 | MEG | PSP | SOB | SR5 | TRP | WOO | | +----------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-------+ | 2020 | | | | 2 | | | 10 | 1 | | | 11 | | | | | | 24 | +----------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-------+ | 2019 | | | | 15 | 1 | 1 | 49 | 3 | 5 | | 39 | | | 3 | | | 116 | | 2018 | 1 | | | | 1 | 2 | 38 | 9 | 3 | 1 | 33 | | | 4 | | 1 | 93 | | 2017 | | | | | | 1 | 12 | 7 | | 1 | 36 | 1 | | 2 | 1 | | 61 | | 2016 | | | | | | 1 | 6 | 5 | | | 34 | | 1 | 6 | | | 53 | | 2015 | 1 | 2 | | | 1 | | 1 | | | | 10 | | | 3 | | | 18 | | 2014 | 2 | 2 | | | | | | | | | 10 | | | 13 | 2 | | 29 | | 2013 | | | | | | | | | | | | | | 2 | 3 | | 5 | | 2012 | 2 | | | | | | | 3 | 3 | | 3 | | | | 1 | | 12 | | 2011 | | 1 | | | | | | 3 | 1 | | | | | | 6 | | 11 | | 2010 | | 1 | | | | | | | | | | | | | 1 | | 2 | | 2009 | | 1 | 2 | | | | | | | | | | | | | | 3 | | 2008 | | 1 | | | | | | | | | | | | | | | 1 | | 2007 | | | | | | | | | | | | | | | | 1 | 1 | +----------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-------+ | Total | 6 | 8 | 2 | 17 | 3 | 5 | 116 | 31 | 12 | 2 | 176 | 1 | 1 | 33 | 14 | 2 | 429 | +----------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-------+

Detailed list of 2020 Mega Primes:
+------+-----+-------------+----------+-----------+---------------------------+ | 2020 | MP# | Found Date | Project | Digits# | Primes | +------+-----+-------------+----------+-----------+---------------------------+ | 1 | 406 | 01-Jan-2020 | GFN-17 | 1 025 037 | 66131722^131072 + 1 | | 2 | 407 | 05-Jan-2020 | GFN-17 | 1 025 159 | 66272848^131072 + 1 | | 3 | 408 | 07-Jan-2020 | PPS-MEGA | 1 001 422 | 6779 * 2^3326639 + 1 | | 4 | 409 | 13-Jan-2020 | PPS-MEGA | 1 001 469 | 2277 * 2^3326794 + 1 | | 5 | 410 | 15-Jan-2020 | PPS-MEGA | 1 001 521 | 2435 * 2^3326969 + 1 | | 6 | 411 | 19-Jan-2020 | GFN-17 | 1 025 696 | 66901180^131072 + 1 | | 7 | 412 | 20-Jan-2020 | GFN-17 | 1 025 765 | 66982940^131072 + 1 | | 8 | 413 | 21-Jan-2020 | GFN-18 | 1 828 578 | 9450844^262144 + 1 | | 9 | 414 | 22-Jan-2020 | PPS-DIV | 1 662 849 | 13 * 2^5523860 + 1 | | 10 | 415 | 23-Jan-2020 | PPS-MEGA | 1 001 619 | 4987 * 2^3327294 + 1 | | 11 | 416 | 25-Jan-2020 | PPS-MEGA | 1 001 634 | 3411 * 2^3327343 + 1 | | 12 | 417 | 27-Jan-2020 | PPS-MEGA | 1 001 653 | 8863 * 2^3327406 + 1 | | 13 | 418 | 28-Jan-2020 | PPS-DIV | 1 673 976 | 31 * 2^5560820 + 1 | | 14 | 419 | 28-Jan-2020 | GFN-17 | 1 026 094 | 67371416^131072 + 1 | +------+-----+-------------+----------+-----------+---------------------------+ | 15 | 420 | 01-Fev-2020 | PPS-MEGA | 1 001 725 | 4581 * 2^3327644 + 1 | | 16 | 421 | 01-Fev-2020 | PPS-MEGA | 1 001 727 | 8319 * 2^3327650 + 1 | | 17 | 422 | 01-Fev-2020 | GFN-17 | 1 026 393 | 67725850^131072 + 1 | | 18 | 423 | 02-Fev-2020 | PPS-MEGA | 1 001 769 | 5085 * 2^3327789 + 1 | | 19 | 424 | 03-Fev-2020 | GFN-17 | 1 026 535 | 67894288^131072 + 1 | | 20 | 425 | 04-Fev-2020 | PPS-MEGA | 1 001 828 | 2945 * 2^3327987 + 1 | | 21 | 426 | 04-Fev-2020 | PPS-MEGA | 1 001 828 | 9681 * 2^3327987 + 1 | | 22 | 427 | 05-Fev-2020 | GFN-17 | 1 026 853 | 68275006^131072 + 1 | | 23 | 428 | 06-Fev-2020 | GFN-17 | 1 026 934 | 68372810^131072 + 1 | | 24 | 429 | 07-Fev-2020 | GFN-17 | 1 027 071 | 68536972^131072 + 1 | +------+-----+-------------+----------+-----------+---------------------------+



Thank you for the stats - very good
8) Message boards : Number crunching : Tour de Primes 2020 (Message 137520)
Posted 590 days ago by HomefarmProject donor
Thank you for that Micheal. Really nice quality of life improvement.

I second that!



I third it ;-)
9) Message boards : Number crunching : Tour de Primes 2020 (Message 137416)
Posted 591 days ago by HomefarmProject donor
[quote]I think I've developed O C D, or obsessive Challenge disorder. Very worrying, causing excessive sweating over results, high temperatures on processing, and general desire to spend loads of money buying new faster kit. Also insomnia, needing frequent visits to the computer control centre, to check all units processing at maximum rate, welcome to the world of nerdy crunching, and blogging on strange websites with other compulsives. LoL

Really? If I had found a mega prime in this TdP, I'd be very satisfied.

[quote]

Yes very happy, and perhaps it over encouraged my sense of humour.
10) Message boards : Number crunching : Tour de Primes 2020 (Message 137377)
Posted 591 days ago by HomefarmProject donor


Conversely, we also have the best and craziest most dedicated users in the BOINC universe! :)[/quote]


I think I've developed O C D, or obsessive Challenge disorder. Very worrying, causing excessive sweating over results, high temperatures on processing, and general desire to spend loads of money buying new faster kit. Also insomnia, needing frequent visits to the computer control centre, to check all units processing at maximum rate, welcome to the world of nerdy crunching, and blogging on strange websites with other compulsives. LoL


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