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Message boards : Wieferich and Wall-Sun-Sun Prime Search : Only 50% GPU utilization under Win 7

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Profile BurProject donor
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Joined: 25 Feb 20
Posts: 332
ID: 1241833
Credit: 22,611,276
RAC: 4,081
321 LLR Gold: Earned 500,000 credits (538,216)Cullen LLR Amethyst: Earned 1,000,000 credits (1,169,946)ESP LLR Gold: Earned 500,000 credits (636,842)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (212,232)PPS LLR Gold: Earned 500,000 credits (883,715)PSP LLR Gold: Earned 500,000 credits (663,928)SoB LLR Silver: Earned 100,000 credits (217,346)SR5 LLR Gold: Earned 500,000 credits (531,229)SGS LLR Amethyst: Earned 1,000,000 credits (1,042,382)TRP LLR Gold: Earned 500,000 credits (561,429)Woodall LLR Gold: Earned 500,000 credits (781,741)321 Sieve Ruby: Earned 2,000,000 credits (2,107,153)PPS Sieve Amethyst: Earned 1,000,000 credits (1,045,010)AP 26/27 Ruby: Earned 2,000,000 credits (2,470,273)GFN Turquoise: Earned 5,000,000 credits (7,129,018)PSA Silver: Earned 100,000 credits (244,815)
Message 146257 - Posted: 7 Dec 2020 | 12:57:25 UTC

I open a new thread since this seems to be a not-so-rare issue with Windows 7 and I think a dedicated thread makes sense.

Three users reported 50% GPU utilization under Windows 7:

Link to post 1
1660 Ti @ Home Premium x64 Edition, Service Pack 1

Link to post 2
1660 Super @ Enterprise x64 Edition, Service Pack 1

Link to post 3
1060 @ Ultimate x64 Edition, Service Pack 1

All different versions of Win 7 and different cards.


However, there is one report of a task that ran fine:

Link to post
1660 @ Home Premium x64 Edition, Service Pack 1


Asked bluntly, is there any chance it will be fixed? Is there anything I can do to try and help solve the issue? Or should I just think about upgrading?
____________
Primes: 1281979 & 12+8+1979 & 1+2+8+1+9+7+9 & 1^2+2^2+8^2+1^2+9^2+7^2+9^2 & 12*8+19*79 & 12^8-1979 & 1281979 + 4 (cousin prime)

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Discovered the World's First base 116 Generalized Cullen prime!!!Discovered 26 mega primesEliminated 7 conjecture "k"sDiscovered 1 Sophie Germain pairDiscovered 2 Fermat divisors2012 Tour de Primes highest prime count2012 Tour de Primes most Mountain Stage primes2015 Tour de Primes highest prime count2016 Tour de Primes highest prime countFound 23 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de PrimesFound 2 primes in the 2018 Tour de Primes Mountain Stage2019 Tour de Primes highest prime countFound 22 primes in the 2019 Tour de Primes2020 Tour de Primes highest prime scoreFound 21 primes in the 2020 Tour de PrimesFound 4 mega primes in the 2020 Tour de Primes321 LLR Double Silver: Earned 200,000,000 credits (201,403,028)Cullen LLR Double Bronze: Earned 100,000,000 credits (188,339,206)ESP LLR Double Silver: Earned 200,000,000 credits (203,249,784)Generalized Cullen/Woodall LLR Double Bronze: Earned 100,000,000 credits (109,580,172)PPS LLR Double Gold: Earned 500,000,000 credits (647,115,820)PSP LLR Double Bronze: Earned 100,000,000 credits (126,982,721)SoB LLR Double Bronze: Earned 100,000,000 credits (135,747,083)SR5 LLR Double Silver: Earned 200,000,000 credits (214,194,272)SGS LLR Double Silver: Earned 200,000,000 credits (200,731,695)TPS LLR (retired) Silver: Earned 100,000 credits (235,439)TRP LLR Double Silver: Earned 200,000,000 credits (201,215,056)Woodall LLR Double Bronze: Earned 100,000,000 credits (101,447,725)321 Sieve Double Silver: Earned 200,000,000 credits (235,451,253)Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (83,794,448)Generalized Cullen/Woodall Sieve (suspended) Double Silver: Earned 200,000,000 credits (285,139,652)PPS Sieve Double Ruby: Earned 2,000,000,000 credits (2,728,039,937)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Double Silver: Earned 200,000,000 credits (203,523,358)TRP Sieve (suspended) Double Silver: Earned 200,000,000 credits (201,489,157)AP 26/27 Double Silver: Earned 200,000,000 credits (385,720,907)GFN Double Amethyst: Earned 1,000,000,000 credits (1,984,821,252)PSA Double Silver: Earned 200,000,000 credits (259,058,048)
Message 146264 - Posted: 7 Dec 2020 | 13:30:41 UTC - in response to Message 146257.

I open a new thread since this seems to be a not-so-rare issue with Windows 7 and I think a dedicated thread makes sense.

Three users reported 50% GPU utilization under Windows 7:

Link to post 1
1660 Ti @ Home Premium x64 Edition, Service Pack 1

Link to post 2
1660 Super @ Enterprise x64 Edition, Service Pack 1

Link to post 3
1060 @ Ultimate x64 Edition, Service Pack 1

All different versions of Win 7 and different cards.


However, there is one report of a task that ran fine:

Link to post
1660 @ Home Premium x64 Edition, Service Pack 1


Asked bluntly, is there any chance it will be fixed? Is there anything I can do to try and help solve the issue? Or should I just think about upgrading?


The one that worked at 100% is running driver 441.66. All three that run at 50% have driver 441.87 or newer. Perhaps try a driver downgrade?

Profile BurProject donor
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Posts: 332
ID: 1241833
Credit: 22,611,276
RAC: 4,081
321 LLR Gold: Earned 500,000 credits (538,216)Cullen LLR Amethyst: Earned 1,000,000 credits (1,169,946)ESP LLR Gold: Earned 500,000 credits (636,842)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (212,232)PPS LLR Gold: Earned 500,000 credits (883,715)PSP LLR Gold: Earned 500,000 credits (663,928)SoB LLR Silver: Earned 100,000 credits (217,346)SR5 LLR Gold: Earned 500,000 credits (531,229)SGS LLR Amethyst: Earned 1,000,000 credits (1,042,382)TRP LLR Gold: Earned 500,000 credits (561,429)Woodall LLR Gold: Earned 500,000 credits (781,741)321 Sieve Ruby: Earned 2,000,000 credits (2,107,153)PPS Sieve Amethyst: Earned 1,000,000 credits (1,045,010)AP 26/27 Ruby: Earned 2,000,000 credits (2,470,273)GFN Turquoise: Earned 5,000,000 credits (7,129,018)PSA Silver: Earned 100,000 credits (244,815)
Message 146266 - Posted: 7 Dec 2020 | 13:53:16 UTC - in response to Message 146264.

Ok, thanks, I'll try that tomorrow.
____________
Primes: 1281979 & 12+8+1979 & 1+2+8+1+9+7+9 & 1^2+2^2+8^2+1^2+9^2+7^2+9^2 & 12*8+19*79 & 12^8-1979 & 1281979 + 4 (cousin prime)

Profile BurProject donor
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Joined: 25 Feb 20
Posts: 332
ID: 1241833
Credit: 22,611,276
RAC: 4,081
321 LLR Gold: Earned 500,000 credits (538,216)Cullen LLR Amethyst: Earned 1,000,000 credits (1,169,946)ESP LLR Gold: Earned 500,000 credits (636,842)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (212,232)PPS LLR Gold: Earned 500,000 credits (883,715)PSP LLR Gold: Earned 500,000 credits (663,928)SoB LLR Silver: Earned 100,000 credits (217,346)SR5 LLR Gold: Earned 500,000 credits (531,229)SGS LLR Amethyst: Earned 1,000,000 credits (1,042,382)TRP LLR Gold: Earned 500,000 credits (561,429)Woodall LLR Gold: Earned 500,000 credits (781,741)321 Sieve Ruby: Earned 2,000,000 credits (2,107,153)PPS Sieve Amethyst: Earned 1,000,000 credits (1,045,010)AP 26/27 Ruby: Earned 2,000,000 credits (2,470,273)GFN Turquoise: Earned 5,000,000 credits (7,129,018)PSA Silver: Earned 100,000 credits (244,815)
Message 146336 - Posted: 8 Dec 2020 | 9:00:08 UTC

Downgrading to 441.66 didn't help.

I'll run the software manually on another Win 7 computer with a GTX 745.
____________
Primes: 1281979 & 12+8+1979 & 1+2+8+1+9+7+9 & 1^2+2^2+8^2+1^2+9^2+7^2+9^2 & 12*8+19*79 & 12^8-1979 & 1281979 + 4 (cousin prime)

Profile BurProject donor
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Joined: 25 Feb 20
Posts: 332
ID: 1241833
Credit: 22,611,276
RAC: 4,081
321 LLR Gold: Earned 500,000 credits (538,216)Cullen LLR Amethyst: Earned 1,000,000 credits (1,169,946)ESP LLR Gold: Earned 500,000 credits (636,842)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (212,232)PPS LLR Gold: Earned 500,000 credits (883,715)PSP LLR Gold: Earned 500,000 credits (663,928)SoB LLR Silver: Earned 100,000 credits (217,346)SR5 LLR Gold: Earned 500,000 credits (531,229)SGS LLR Amethyst: Earned 1,000,000 credits (1,042,382)TRP LLR Gold: Earned 500,000 credits (561,429)Woodall LLR Gold: Earned 500,000 credits (781,741)321 Sieve Ruby: Earned 2,000,000 credits (2,107,153)PPS Sieve Amethyst: Earned 1,000,000 credits (1,045,010)AP 26/27 Ruby: Earned 2,000,000 credits (2,470,273)GFN Turquoise: Earned 5,000,000 credits (7,129,018)PSA Silver: Earned 100,000 credits (244,815)
Message 146338 - Posted: 8 Dec 2020 | 10:07:36 UTC - in response to Message 146336.

I tried the version mflop uploaded for testing a while back and it fully utilizes the GPU (or at least to 85-90%, same as GFN does).

I saw it offers an option -ws to set workload on the GPU, can this parameter by adjusted in the BOINC version as well?
____________
Primes: 1281979 & 12+8+1979 & 1+2+8+1+9+7+9 & 1^2+2^2+8^2+1^2+9^2+7^2+9^2 & 12*8+19*79 & 12^8-1979 & 1281979 + 4 (cousin prime)

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Joined: 10 May 14
Posts: 162
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Credit: 115,534,067
RAC: 3,128
Discovered 1 mega primeFound 1 prime in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,000,300)Cullen LLR Amethyst: Earned 1,000,000 credits (1,022,945)ESP LLR Gold: Earned 500,000 credits (516,221)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,011,992)PPS LLR Amethyst: Earned 1,000,000 credits (1,180,833)PSP LLR Amethyst: Earned 1,000,000 credits (1,026,142)SoB LLR Amethyst: Earned 1,000,000 credits (1,003,790)SR5 LLR Gold: Earned 500,000 credits (803,386)SGS LLR Amethyst: Earned 1,000,000 credits (1,000,114)TRP LLR Amethyst: Earned 1,000,000 credits (1,004,185)Woodall LLR Amethyst: Earned 1,000,000 credits (1,018,066)321 Sieve Amethyst: Earned 1,000,000 credits (1,000,211)Generalized Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,000,420)PPS Sieve Sapphire: Earned 20,000,000 credits (22,407,037)AP 26/27 Sapphire: Earned 20,000,000 credits (20,077,538)GFN Sapphire: Earned 20,000,000 credits (37,170,000)PSA Sapphire: Earned 20,000,000 credits (20,070,245)
Message 146358 - Posted: 8 Dec 2020 | 15:06:45 UTC - in response to Message 146338.

I tried the version mflop uploaded for testing a while back and it fully utilizes the GPU (or at least to 85-90%, same as GFN does).

I saw it offers an option -ws to set workload on the GPU, can this parameter by adjusted in the BOINC version as well?

This version is currently being tested. The current Boinc version doesn't have the -ws setting.

Profile BurProject donor
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Joined: 25 Feb 20
Posts: 332
ID: 1241833
Credit: 22,611,276
RAC: 4,081
321 LLR Gold: Earned 500,000 credits (538,216)Cullen LLR Amethyst: Earned 1,000,000 credits (1,169,946)ESP LLR Gold: Earned 500,000 credits (636,842)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (212,232)PPS LLR Gold: Earned 500,000 credits (883,715)PSP LLR Gold: Earned 500,000 credits (663,928)SoB LLR Silver: Earned 100,000 credits (217,346)SR5 LLR Gold: Earned 500,000 credits (531,229)SGS LLR Amethyst: Earned 1,000,000 credits (1,042,382)TRP LLR Gold: Earned 500,000 credits (561,429)Woodall LLR Gold: Earned 500,000 credits (781,741)321 Sieve Ruby: Earned 2,000,000 credits (2,107,153)PPS Sieve Amethyst: Earned 1,000,000 credits (1,045,010)AP 26/27 Ruby: Earned 2,000,000 credits (2,470,273)GFN Turquoise: Earned 5,000,000 credits (7,129,018)PSA Silver: Earned 100,000 credits (244,815)
Message 146373 - Posted: 8 Dec 2020 | 17:48:36 UTC - in response to Message 146358.

Is it possible to replace the version on my own? Or rather, is it ok for PG admins?

Is it possible to consult the database on how frequently this problem occurs? I guess many users won't even notice, on the other hand, maybe only few WW users are still on Win 7.
____________
Primes: 1281979 & 12+8+1979 & 1+2+8+1+9+7+9 & 1^2+2^2+8^2+1^2+9^2+7^2+9^2 & 12*8+19*79 & 12^8-1979 & 1281979 + 4 (cousin prime)

ReggieProject donor
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Joined: 10 May 14
Posts: 162
ID: 311759
Credit: 115,534,067
RAC: 3,128
Discovered 1 mega primeFound 1 prime in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,000,300)Cullen LLR Amethyst: Earned 1,000,000 credits (1,022,945)ESP LLR Gold: Earned 500,000 credits (516,221)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,011,992)PPS LLR Amethyst: Earned 1,000,000 credits (1,180,833)PSP LLR Amethyst: Earned 1,000,000 credits (1,026,142)SoB LLR Amethyst: Earned 1,000,000 credits (1,003,790)SR5 LLR Gold: Earned 500,000 credits (803,386)SGS LLR Amethyst: Earned 1,000,000 credits (1,000,114)TRP LLR Amethyst: Earned 1,000,000 credits (1,004,185)Woodall LLR Amethyst: Earned 1,000,000 credits (1,018,066)321 Sieve Amethyst: Earned 1,000,000 credits (1,000,211)Generalized Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,000,420)PPS Sieve Sapphire: Earned 20,000,000 credits (22,407,037)AP 26/27 Sapphire: Earned 20,000,000 credits (20,077,538)GFN Sapphire: Earned 20,000,000 credits (37,170,000)PSA Sapphire: Earned 20,000,000 credits (20,070,245)
Message 146374 - Posted: 8 Dec 2020 | 17:55:47 UTC - in response to Message 146373.

Is it possible to replace the version on my own? Or rather, is it ok for PG admins?
It's possible and fine by us, but a bit of a hassle. Look into using app_info.xml. I can't be much help here as I've never done it myself.

Is it possible to consult the database on how frequently this problem occurs? I guess many users won't even notice, on the other hand, maybe only few WW users are still on Win 7.
Not really, especially since this doesn't seem to be an issue 100% of the time.

Profile mattozanProject donor
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Credit: 1,080,658,914
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Discovered 2 mega primesFound 2 primes in the 2018 Tour de PrimesFound 1 prime in the 2018 Tour de Primes Mountain StageFound 4 primes in the 2019 Tour de PrimesFound 2 primes in the 2019 Tour de Primes Mountain Stage2020 Tour de Primes most Mountain Stage primesFound 3 primes in the 2020 Tour de PrimesFound 2 primes in the 2020 Tour de Primes Mountain Stage321 LLR Turquoise: Earned 5,000,000 credits (5,173,611)Cullen LLR Ruby: Earned 2,000,000 credits (2,542,805)ESP LLR Turquoise: Earned 5,000,000 credits (9,593,615)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,621,320)PPS LLR Emerald: Earned 50,000,000 credits (70,346,330)PSP LLR Sapphire: Earned 20,000,000 credits (20,850,520)SoB LLR Jade: Earned 10,000,000 credits (15,031,779)SR5 LLR Sapphire: Earned 20,000,000 credits (26,092,973)SGS LLR Jade: Earned 10,000,000 credits (14,891,127)TRP LLR Jade: Earned 10,000,000 credits (10,001,551)Woodall LLR Ruby: Earned 2,000,000 credits (2,369,390)321 Sieve Ruby: Earned 2,000,000 credits (2,421,223)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,165,870)Generalized Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,012,635)PPS Sieve Double Silver: Earned 200,000,000 credits (473,599,984)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Gold: Earned 500,000 credits (727,064)TRP Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,187,678)AP 26/27 Double Bronze: Earned 100,000,000 credits (100,614,098)GFN Double Silver: Earned 200,000,000 credits (241,749,972)PSA Emerald: Earned 50,000,000 credits (52,497,368)
Message 146398 - Posted: 8 Dec 2020 | 20:06:39 UTC - in response to Message 146257.


Link to post 3
1060 @ Ultimate x64 Edition, Service Pack 1


I'm already planning to move to Win10, so don't make drastic changes on my behalf.

Logic(?) of a prime cruncher:
Microsoft- "You won't be getting security updates anymore!"
Me- "Meh."
PrimeGrid- "Your GPU will only run this one new app at 50%"
Me- "UPGRADE IMMEDIATELY!!"

:D

____________

Proud member of Team Aggie the Pew

"Wir müssen wissen. Wir werden wissen."
"We must know, we shall know."
- David Hilbert, 1930

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Credit: 315,941,141
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Discovered 1 mega primeEliminated 1 conjecture "k"321 LLR Turquoise: Earned 5,000,000 credits (6,129,855)Cullen LLR Turquoise: Earned 5,000,000 credits (5,109,733)ESP LLR Turquoise: Earned 5,000,000 credits (5,734,775)Generalized Cullen/Woodall LLR Sapphire: Earned 20,000,000 credits (31,649,303)PPS LLR Sapphire: Earned 20,000,000 credits (43,889,779)PSP LLR Turquoise: Earned 5,000,000 credits (5,293,022)SoB LLR Turquoise: Earned 5,000,000 credits (5,013,831)SR5 LLR Sapphire: Earned 20,000,000 credits (27,902,931)SGS LLR Turquoise: Earned 5,000,000 credits (5,076,722)TRP LLR Turquoise: Earned 5,000,000 credits (5,819,012)Woodall LLR Turquoise: Earned 5,000,000 credits (5,098,313)321 Sieve Jade: Earned 10,000,000 credits (11,008,362)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,969,265)Generalized Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,000,094)PPS Sieve Emerald: Earned 50,000,000 credits (51,368,787)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,001,345)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,224,085)AP 26/27 Sapphire: Earned 20,000,000 credits (25,288,965)GFN Sapphire: Earned 20,000,000 credits (39,205,178)PSA Sapphire: Earned 20,000,000 credits (28,861,785)
Message 146400 - Posted: 8 Dec 2020 | 20:17:27 UTC - in response to Message 146398.

LOL, great :-)

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Joined: 25 Feb 20
Posts: 332
ID: 1241833
Credit: 22,611,276
RAC: 4,081
321 LLR Gold: Earned 500,000 credits (538,216)Cullen LLR Amethyst: Earned 1,000,000 credits (1,169,946)ESP LLR Gold: Earned 500,000 credits (636,842)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (212,232)PPS LLR Gold: Earned 500,000 credits (883,715)PSP LLR Gold: Earned 500,000 credits (663,928)SoB LLR Silver: Earned 100,000 credits (217,346)SR5 LLR Gold: Earned 500,000 credits (531,229)SGS LLR Amethyst: Earned 1,000,000 credits (1,042,382)TRP LLR Gold: Earned 500,000 credits (561,429)Woodall LLR Gold: Earned 500,000 credits (781,741)321 Sieve Ruby: Earned 2,000,000 credits (2,107,153)PPS Sieve Amethyst: Earned 1,000,000 credits (1,045,010)AP 26/27 Ruby: Earned 2,000,000 credits (2,470,273)GFN Turquoise: Earned 5,000,000 credits (7,129,018)PSA Silver: Earned 100,000 credits (244,815)
Message 146494 - Posted: 10 Dec 2020 | 18:34:29 UTC
Last modified: 10 Dec 2020 | 19:06:02 UTC

Haha, that's true. I'll also finally upgrade that computer. Unfortunately many users might not even notice the slow-down.

edit: With the new 1.0.3 version run time is now at 1350 s from previously 1750 s. I'm not at the computer, but I think this is still not 90-100% GPU utilization, but a big step forward. Is it possible to increase it further?
____________
Primes: 1281979 & 12+8+1979 & 1+2+8+1+9+7+9 & 1^2+2^2+8^2+1^2+9^2+7^2+9^2 & 12*8+19*79 & 12^8-1979 & 1281979 + 4 (cousin prime)

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Joined: 25 Feb 20
Posts: 332
ID: 1241833
Credit: 22,611,276
RAC: 4,081
321 LLR Gold: Earned 500,000 credits (538,216)Cullen LLR Amethyst: Earned 1,000,000 credits (1,169,946)ESP LLR Gold: Earned 500,000 credits (636,842)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (212,232)PPS LLR Gold: Earned 500,000 credits (883,715)PSP LLR Gold: Earned 500,000 credits (663,928)SoB LLR Silver: Earned 100,000 credits (217,346)SR5 LLR Gold: Earned 500,000 credits (531,229)SGS LLR Amethyst: Earned 1,000,000 credits (1,042,382)TRP LLR Gold: Earned 500,000 credits (561,429)Woodall LLR Gold: Earned 500,000 credits (781,741)321 Sieve Ruby: Earned 2,000,000 credits (2,107,153)PPS Sieve Amethyst: Earned 1,000,000 credits (1,045,010)AP 26/27 Ruby: Earned 2,000,000 credits (2,470,273)GFN Turquoise: Earned 5,000,000 credits (7,129,018)PSA Silver: Earned 100,000 credits (244,815)
Message 146748 - Posted: 17 Dec 2020 | 18:05:14 UTC

Ok, I upgraded the computer today, now it takes the expected 940 s.

I had a problem with pfgw crashing occasionally in PSA, so that was another incentive.
____________
Primes: 1281979 & 12+8+1979 & 1+2+8+1+9+7+9 & 1^2+2^2+8^2+1^2+9^2+7^2+9^2 & 12*8+19*79 & 12^8-1979 & 1281979 + 4 (cousin prime)

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Message boards : Wieferich and Wall-Sun-Sun Prime Search : Only 50% GPU utilization under Win 7

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