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Message boards : Problems and Help : CPU/GPU Prioritization?

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ZachProject donor
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Joined: 3 May 18
Posts: 24
ID: 1010731
Credit: 42,261,938
RAC: 4,787
Found 2 primes in the 2022 Tour de Primes321 LLR Gold: Earned 500,000 credits (509,620)Cullen LLR Silver: Earned 100,000 credits (142,330)ESP LLR Silver: Earned 100,000 credits (119,149)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (285,681)PPS LLR Amethyst: Earned 1,000,000 credits (1,491,983)PSP LLR Silver: Earned 100,000 credits (278,238)SoB LLR Gold: Earned 500,000 credits (504,136)SR5 LLR Gold: Earned 500,000 credits (664,205)SGS LLR Silver: Earned 100,000 credits (101,580)TRP LLR Silver: Earned 100,000 credits (353,161)Woodall LLR Silver: Earned 100,000 credits (301,920)321 Sieve (suspended) Silver: Earned 100,000 credits (170,768)Generalized Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (123,417)PPS Sieve Ruby: Earned 2,000,000 credits (4,083,300)AP 26/27 Ruby: Earned 2,000,000 credits (2,433,886)GFN Jade: Earned 10,000,000 credits (14,866,864)WW Jade: Earned 10,000,000 credits (15,828,000)
Message 137785 - Posted: 12 Feb 2020 | 18:07:35 UTC

I have 12 cores and a GPU. I'm trying to do 2 MT tasks w 5 cores each + a GPU task. So my settings are 5 threads and 3 max tasks. This works fine most of the time, but sometimes I'll return to it and it's doing 1 CPU, 1 GPU, and holding one GPU WU. (That's weird too because it's set to not pre-fetch.)

My hypothesis is that sometimes when it reports a CPU WU, it sees there's room for another task and prioritizes fetching a GPU task. Is that the case, and can I control it?

darkclownProject donor
Volunteer tester
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Joined: 3 Oct 06
Posts: 326
ID: 3605
Credit: 1,378,256,224
RAC: 160,292
Discovered 2 mega primesFound 2 primes in the 2020 Tour de PrimesFound 2 primes in the 2021 Tour de PrimesFound 2 primes in the 2022 Tour de Primes321 LLR Jade: Earned 10,000,000 credits (17,326,412)Cullen LLR Jade: Earned 10,000,000 credits (11,439,220)ESP LLR Jade: Earned 10,000,000 credits (10,733,214)Generalized Cullen/Woodall LLR Jade: Earned 10,000,000 credits (10,096,036)PPS LLR Sapphire: Earned 20,000,000 credits (38,740,658)PSP LLR Jade: Earned 10,000,000 credits (11,093,288)SoB LLR Jade: Earned 10,000,000 credits (12,524,203)SR5 LLR Sapphire: Earned 20,000,000 credits (23,319,777)SGS LLR Jade: Earned 10,000,000 credits (10,101,262)TPS LLR (retired) Bronze: Earned 10,000 credits (14,608)TRP LLR Jade: Earned 10,000,000 credits (11,325,869)Woodall LLR Sapphire: Earned 20,000,000 credits (20,084,975)321 Sieve (suspended) Sapphire: Earned 20,000,000 credits (25,014,763)Generalized Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (10,370,445)PPS Sieve Double Silver: Earned 200,000,000 credits (203,057,616)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Gold: Earned 500,000 credits (718,547)TRP Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,027,562)AP 26/27 Double Bronze: Earned 100,000,000 credits (105,508,003)GFN Double Bronze: Earned 100,000,000 credits (133,725,620)WW Double Gold: Earned 500,000,000 credits (500,248,000)PSA Double Silver: Earned 200,000,000 credits (221,782,985)
Message 137786 - Posted: 12 Feb 2020 | 18:09:20 UTC - in response to Message 137785.

Don't set for a fixed number of tasks. Set for 5 cores/task, and in the boinc client, set it to use 10/12 (83.3->84%) CPU. This should accomplish what you're looking for.
____________
My lucky #: 60133106^131072+1 (GFN 17-mega)

Profile Eudy SilvaProject donor
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Joined: 26 Aug 17
Posts: 1957
ID: 918937
Credit: 558,676,147
RAC: 159,627
Discovered 2 mega primesFound 2 primes in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de PrimesFound 1 prime in the 2021 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,187,213)Cullen LLR Amethyst: Earned 1,000,000 credits (1,349,947)ESP LLR Amethyst: Earned 1,000,000 credits (1,151,976)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,199,207)PPS LLR Sapphire: Earned 20,000,000 credits (29,335,899)PSP LLR Amethyst: Earned 1,000,000 credits (1,476,639)SoB LLR Ruby: Earned 2,000,000 credits (2,432,091)SR5 LLR Ruby: Earned 2,000,000 credits (3,137,603)SGS LLR Amethyst: Earned 1,000,000 credits (1,462,951)TRP LLR Ruby: Earned 2,000,000 credits (2,010,675)Woodall LLR Amethyst: Earned 1,000,000 credits (1,231,973)321 Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,119,749)Generalized Cullen/Woodall Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,005,331)PPS Sieve Double Bronze: Earned 100,000,000 credits (100,101,845)AP 26/27 Double Bronze: Earned 100,000,000 credits (100,120,852)GFN Double Bronze: Earned 100,000,000 credits (108,116,989)WW Double Silver: Earned 200,000,000 credits (200,192,000)PSA Ruby: Earned 2,000,000 credits (2,059,222)
Message 137788 - Posted: 12 Feb 2020 | 18:32:17 UTC - in response to Message 137785.

I have 12 cores and a GPU. I'm trying to do 2 MT tasks w 5 cores each + a GPU task. So my settings are 5 threads and 3 max tasks. This works fine most of the time, but sometimes I'll return to it and it's doing 1 CPU, 1 GPU, and holding one GPU WU. (That's weird too because it's set to not pre-fetch.)

My hypothesis is that sometimes when it reports a CPU WU, it sees there's room for another task and prioritizes fetching a GPU task. Is that the case, and can I control it?


I believe your settings are correct.
Besides setting task cache to zero (Maintain enough work for an additional = 0 days in Computing preferences) also set Resource share to zero, in PrimeGrid preferences.

This should keep no tasks waiting to be run and also get rid of the 3 min pre-fetch of the next task to run.
____________

"Accidit in puncto, quod non contingit in anno."
Something that does not occur in a year may, perchance, happen in a moment.

ZachProject donor
Send message
Joined: 3 May 18
Posts: 24
ID: 1010731
Credit: 42,261,938
RAC: 4,787
Found 2 primes in the 2022 Tour de Primes321 LLR Gold: Earned 500,000 credits (509,620)Cullen LLR Silver: Earned 100,000 credits (142,330)ESP LLR Silver: Earned 100,000 credits (119,149)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (285,681)PPS LLR Amethyst: Earned 1,000,000 credits (1,491,983)PSP LLR Silver: Earned 100,000 credits (278,238)SoB LLR Gold: Earned 500,000 credits (504,136)SR5 LLR Gold: Earned 500,000 credits (664,205)SGS LLR Silver: Earned 100,000 credits (101,580)TRP LLR Silver: Earned 100,000 credits (353,161)Woodall LLR Silver: Earned 100,000 credits (301,920)321 Sieve (suspended) Silver: Earned 100,000 credits (170,768)Generalized Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (123,417)PPS Sieve Ruby: Earned 2,000,000 credits (4,083,300)AP 26/27 Ruby: Earned 2,000,000 credits (2,433,886)GFN Jade: Earned 10,000,000 credits (14,866,864)WW Jade: Earned 10,000,000 credits (15,828,000)
Message 137817 - Posted: 13 Feb 2020 | 2:27:22 UTC - in response to Message 137788.

Thanks all!

Message boards : Problems and Help : CPU/GPU Prioritization?

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