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Message boards : Problems and Help : Missing those 500K GFN21 seconds

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pyajve
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Joined: 9 Oct 10
Posts: 25
ID: 69762
Credit: 83,445,203
RAC: 114,701
Found 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,002,669)Cullen LLR Ruby: Earned 2,000,000 credits (2,000,580)ESP LLR Ruby: Earned 2,000,000 credits (2,022,160)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,004,720)PPS LLR Turquoise: Earned 5,000,000 credits (7,179,542)PSP LLR Ruby: Earned 2,000,000 credits (2,038,572)SoB LLR Ruby: Earned 2,000,000 credits (2,320,678)SR5 LLR Ruby: Earned 2,000,000 credits (2,513,803)SGS LLR Ruby: Earned 2,000,000 credits (2,285,809)TRP LLR Ruby: Earned 2,000,000 credits (2,051,129)Woodall LLR Ruby: Earned 2,000,000 credits (2,006,470)321 Sieve Turquoise: Earned 5,000,000 credits (6,202,530)Generalized Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (10,154,201)PPS Sieve Turquoise: Earned 5,000,000 credits (5,022,681)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,135,080)TRP Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,119,667)AP 26/27 Jade: Earned 10,000,000 credits (10,249,005)GFN Jade: Earned 10,000,000 credits (15,240,854)PSA Turquoise: Earned 5,000,000 credits (5,895,092)
Message 135396 - Posted: 8 Dec 2019 | 6:02:54 UTC

Was running two GFN-21 tasks: on the CPU (https://www.primegrid.com/result.php?resultid=1042083057) and on the GPU (https://www.primegrid.com/result.php?resultid=1042374359).
A BSOD happened.
The GPU task then continued and verified successfully while the CPU one continued but was stated to be invalid.

Looking for a general advice on what I should have done in this case.

Also wondering if CPU and GPU implementations have different "restart from last good checkpoint" approaches and if there are any command-line options to control the behavior.

Profile Michael GoetzProject donor
Honorary cruncher
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Joined: 21 Jan 10
Posts: 13192
ID: 53948
Credit: 216,909,613
RAC: 43,288
The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,822,730)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Turquoise: Earned 5,000,000 credits (5,009,577)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,145,754)PPS LLR Jade: Earned 10,000,000 credits (12,841,928)PSP LLR Turquoise: Earned 5,000,000 credits (5,197,957)SoB LLR Sapphire: Earned 20,000,000 credits (34,291,181)SR5 LLR Jade: Earned 10,000,000 credits (10,002,028)SGS LLR Ruby: Earned 2,000,000 credits (2,274,454)TRP LLR Ruby: Earned 2,000,000 credits (2,737,347)Woodall LLR Ruby: Earned 2,000,000 credits (2,195,123)321 Sieve Turquoise: Earned 5,000,000 credits (8,223,613)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,059,304)PPS Sieve Sapphire: Earned 20,000,000 credits (20,114,159)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Jade: Earned 10,000,000 credits (10,114,260)GFN Emerald: Earned 50,000,000 credits (72,213,603)PSA Jade: Earned 10,000,000 credits (12,404,447)
Message 135409 - Posted: 8 Dec 2019 | 12:59:41 UTC - in response to Message 135396.

Was running two GFN-21 tasks: on the CPU (https://www.primegrid.com/result.php?resultid=1042083057) and on the GPU (https://www.primegrid.com/result.php?resultid=1042374359).
A BSOD happened.
The GPU task then continued and verified successfully while the CPU one continued but was stated to be invalid.

Looking for a general advice on what I should have done in this case.

Also wondering if CPU and GPU implementations have different "restart from last good checkpoint" approaches and if there are any command-line options to control the behavior.



Both versions of the app use the same error recovery.

The error recovery code is fairly robust and can often recover from a lot of system errors, but anything can happen with a BSOD or a power failure, such as disk write buffers not being flushed, that can result in the checkpoint file being corrupted.

It's not obvious what happened to this particular task.

My advice would to concentrate not on what to do about BOINC tasks, but on the BSOD itself. That simply shouldn't be happening -- if it is, it means something's wrong with the hardware or the software in the computer.

Find the problem with the computer, and fix it.

As a point of reference, it's literally been years since my computer had a BSOD -- and that was caused by either overclocked memory not quite cutting it as it aged and/or a problem with a specific motherboard utility. I took the memory speed down a notch, and deleted the offending ASUS utility. The BSODs were vanquished.
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My lucky number is 75898524288+1

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Message boards : Problems and Help : Missing those 500K GFN21 seconds

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