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Message boards : Problems and Help : BOINC CPU Settings and GPU tasks

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frederikhk
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Message 149504 - Posted: 17 Mar 2021 | 13:04:35 UTC
Last modified: 17 Mar 2021 | 13:05:25 UTC

Hi.
Currently BOINC is allowed to use 6 out of 16 threads on my Ryzen 7 5800X, which means i run SOB with 6 cores. I also run a GPU task and it also needs a cpu thread?

The question is, should i let BOINC use 7 out of 16 threads so the GPU can get a core as well for better performance? Or does the GPU app do this automatically?

The thing i want to avoid is the GPU app sharing 1 of the 6 threads with SOB slowing it down.

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321 LLR Turquoise: Earned 5,000,000 credits (8,236,942)Cullen LLR Turquoise: Earned 5,000,000 credits (8,028,695)ESP LLR Turquoise: Earned 5,000,000 credits (8,437,609)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (8,011,297)PPS LLR Turquoise: Earned 5,000,000 credits (8,008,287)PSP LLR Turquoise: Earned 5,000,000 credits (8,346,305)SoB LLR Turquoise: Earned 5,000,000 credits (9,310,410)SR5 LLR Turquoise: Earned 5,000,000 credits (9,486,936)SGS LLR Turquoise: Earned 5,000,000 credits (8,639,486)TRP LLR Turquoise: Earned 5,000,000 credits (8,751,781)Woodall LLR Turquoise: Earned 5,000,000 credits (9,239,555)321 Sieve (suspended) Jade: Earned 10,000,000 credits (10,033,828)Generalized Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (10,037,204)PPS Sieve Jade: Earned 10,000,000 credits (10,305,147)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,000,053)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,030,160)AP 26/27 Jade: Earned 10,000,000 credits (13,572,351)WW Emerald: Earned 50,000,000 credits (50,700,000)GFN Sapphire: Earned 20,000,000 credits (35,932,489)PSA Double Bronze: Earned 100,000,000 credits (170,761,999)
Message 149508 - Posted: 17 Mar 2021 | 14:10:52 UTC - in response to Message 149504.

Hi.
Currently BOINC is allowed to use 6 out of 16 threads on my Ryzen 7 5800X, which means i run SOB with 6 cores. I also run a GPU task and it also needs a cpu thread?

The question is, should i let BOINC use 7 out of 16 threads so the GPU can get a core as well for better performance? Or does the GPU app do this automatically?

The thing i want to avoid is the GPU app sharing 1 of the 6 threads with SOB slowing it down.

GPU core sharing is hardly a problem, especially since you have an SMT capable CPU. Use all 8 cores for SoB, it will hardly make a difference for the GPU, but will surely help on the SoB end.

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Discovered 8 mega primesEliminated 4 conjecture "k"sFound 2 primes in the 2018 Tour de PrimesFound 1 prime in the 2018 Tour de Primes Mountain Stage2019 Tour de Primes largest primeFound 4 primes in the 2019 Tour de PrimesFound 1 mega prime in the 2019 Tour de PrimesFound 1 prime in the 2019 Tour de Primes Mountain StageFound 1 prime in the 2020 Tour de PrimesFound 4 primes in the 2021 Tour de PrimesFound 1 mega prime in the 2021 Tour de PrimesFound 1 prime in the 2021 Tour de Primes Mountain Stage321 LLR Double Bronze: Earned 100,000,000 credits (100,425,701)Cullen LLR Double Bronze: Earned 100,000,000 credits (101,538,484)ESP LLR Double Bronze: Earned 100,000,000 credits (100,642,296)Generalized Cullen/Woodall LLR Emerald: Earned 50,000,000 credits (76,955,806)PPS LLR Double Bronze: Earned 100,000,000 credits (155,502,307)PSP LLR Emerald: Earned 50,000,000 credits (50,563,867)SoB LLR Double Bronze: Earned 100,000,000 credits (113,220,736)SR5 LLR Double Bronze: Earned 100,000,000 credits (101,883,529)SGS LLR Emerald: Earned 50,000,000 credits (55,593,166)TPS LLR (retired) Bronze: Earned 10,000 credits (43,033)TRP LLR Double Bronze: Earned 100,000,000 credits (100,338,924)Woodall LLR Emerald: Earned 50,000,000 credits (50,956,094)321 Sieve (suspended) Double Bronze: Earned 100,000,000 credits (115,948,450)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,142,109)Generalized Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (50,504,945)PPS Sieve Double Gold: Earned 500,000,000 credits (513,057,580)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,288,222)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,149,354)AP 26/27 Double Silver: Earned 200,000,000 credits (232,724,773)WW Double Gold: Earned 500,000,000 credits (800,148,000)GFN Double Gold: Earned 500,000,000 credits (789,218,857)PSA Double Gold: Earned 500,000,000 credits (535,232,795)
Message 149509 - Posted: 17 Mar 2021 | 14:14:26 UTC

If I understandard you question correctly...
BOINC doesn't care about CPU core affinities, nor does PG (or other) application.
You can set how many cores each application uses but not which ones.

The way to go about this are Process Lasso and the like, where you can set what cores, how many for each apps.
It is good if you have dual-CPU system to make sure that one app doesn't bounce between those CPUs and slowing down.

This is an OS issue, not app settings.
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frederikhk
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Joined: 10 Jun 15
Posts: 10
ID: 407454
Credit: 26,217,299
RAC: 34
321 LLR Silver: Earned 100,000 credits (100,505)Cullen LLR Silver: Earned 100,000 credits (233,439)ESP LLR Silver: Earned 100,000 credits (101,761)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (104,620)PPS LLR Gold: Earned 500,000 credits (501,857)PSP LLR Gold: Earned 500,000 credits (507,877)SoB LLR Gold: Earned 500,000 credits (695,048)SR5 LLR Gold: Earned 500,000 credits (505,833)SGS LLR Silver: Earned 100,000 credits (123,812)TRP LLR Silver: Earned 100,000 credits (100,199)Woodall LLR Gold: Earned 500,000 credits (514,812)Generalized Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (10,376)PPS Sieve Turquoise: Earned 5,000,000 credits (5,174,485)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (44,777)TRP Sieve (suspended) Bronze: Earned 10,000 credits (59,350)AP 26/27 Ruby: Earned 2,000,000 credits (4,188,548)WW Turquoise: Earned 5,000,000 credits (7,368,000)GFN Turquoise: Earned 5,000,000 credits (5,041,712)PSA Gold: Earned 500,000 credits (840,288)
Message 149511 - Posted: 17 Mar 2021 | 17:07:08 UTC

Thank you for the answers. Just wanted to make sure!

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Message boards : Problems and Help : BOINC CPU Settings and GPU tasks

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