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

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Zach
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Joined: 3 May 18
Posts: 17
ID: 1010731
Credit: 3,006,995
RAC: 2,607
321 LLR Bronze: Earned 10,000 credits (19,081)ESP LLR Bronze: Earned 10,000 credits (14,586)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (78,214)PPS LLR Gold: Earned 500,000 credits (932,874)PSP LLR Silver: Earned 100,000 credits (192,663)SoB LLR Gold: Earned 500,000 credits (504,136)SR5 LLR Silver: Earned 100,000 credits (290,032)TRP LLR Silver: Earned 100,000 credits (103,396)Woodall LLR Bronze: Earned 10,000 credits (57,278)321 Sieve Silver: Earned 100,000 credits (170,768)Generalized Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (123,417)PPS Sieve Silver: Earned 100,000 credits (188,776)AP 26/27 Silver: Earned 100,000 credits (113,204)GFN Silver: Earned 100,000 credits (213,273)
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
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Joined: 3 Oct 06
Posts: 268
ID: 3605
Credit: 557,145,052
RAC: 1,214,031
Discovered 2 mega primesFound 2 primes in the 2020 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (7,644,082)Cullen LLR Turquoise: Earned 5,000,000 credits (5,655,530)ESP LLR Turquoise: Earned 5,000,000 credits (5,332,324)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,506,675)PPS LLR Sapphire: Earned 20,000,000 credits (24,024,368)PSP LLR Turquoise: Earned 5,000,000 credits (6,856,920)SoB LLR Turquoise: Earned 5,000,000 credits (5,345,484)SR5 LLR Sapphire: Earned 20,000,000 credits (20,212,405)SGS LLR Turquoise: Earned 5,000,000 credits (6,788,078)TPS LLR (retired) Bronze: Earned 10,000 credits (14,608)TRP LLR Turquoise: Earned 5,000,000 credits (5,642,759)Woodall LLR Turquoise: Earned 5,000,000 credits (6,353,737)321 Sieve 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 Emerald: Earned 50,000,000 credits (51,548,021)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 Emerald: Earned 50,000,000 credits (85,774,120)GFN Emerald: Earned 50,000,000 credits (62,082,231)PSA Double Silver: Earned 200,000,000 credits (221,292,409)
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: 1104
ID: 918937
Credit: 148,812,974
RAC: 196,194
Discovered 1 mega primeFound 2 primes in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,012,503)Cullen LLR Amethyst: Earned 1,000,000 credits (1,011,118)ESP LLR Amethyst: Earned 1,000,000 credits (1,022,307)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,004,746)PPS LLR Turquoise: Earned 5,000,000 credits (9,129,153)PSP LLR Amethyst: Earned 1,000,000 credits (1,123,300)SoB LLR Ruby: Earned 2,000,000 credits (2,113,239)SR5 LLR Ruby: Earned 2,000,000 credits (2,947,019)SGS LLR Amethyst: Earned 1,000,000 credits (1,377,815)TRP LLR Amethyst: Earned 1,000,000 credits (1,309,179)Woodall LLR Amethyst: Earned 1,000,000 credits (1,001,901)321 Sieve 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 Emerald: Earned 50,000,000 credits (63,543,350)AP 26/27 Sapphire: Earned 20,000,000 credits (22,479,080)GFN Sapphire: Earned 20,000,000 credits (35,558,098)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.

Zach
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Joined: 3 May 18
Posts: 17
ID: 1010731
Credit: 3,006,995
RAC: 2,607
321 LLR Bronze: Earned 10,000 credits (19,081)ESP LLR Bronze: Earned 10,000 credits (14,586)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (78,214)PPS LLR Gold: Earned 500,000 credits (932,874)PSP LLR Silver: Earned 100,000 credits (192,663)SoB LLR Gold: Earned 500,000 credits (504,136)SR5 LLR Silver: Earned 100,000 credits (290,032)TRP LLR Silver: Earned 100,000 credits (103,396)Woodall LLR Bronze: Earned 10,000 credits (57,278)321 Sieve Silver: Earned 100,000 credits (170,768)Generalized Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (123,417)PPS Sieve Silver: Earned 100,000 credits (188,776)AP 26/27 Silver: Earned 100,000 credits (113,204)GFN Silver: Earned 100,000 credits (213,273)
Message 137817 - Posted: 13 Feb 2020 | 2:27:22 UTC - in response to Message 137788.

Thanks all!

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

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