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Message boards : Proth Prime Search : PPS Sieve only using some GPU, Some of the time???

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Profile 1998golferProject donor
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Joined: 4 Dec 12
Posts: 1057
ID: 183129
Credit: 1,142,792,630
RAC: 1,220,871
Discovered 1 mega primeFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,231,988)Cullen LLR Turquoise: Earned 5,000,000 credits (5,124,261)ESP LLR Turquoise: Earned 5,000,000 credits (7,887,081)Generalized Cullen/Woodall LLR Emerald: Earned 50,000,000 credits (50,656,837)PPS LLR Jade: Earned 10,000,000 credits (12,827,578)PSP LLR Sapphire: Earned 20,000,000 credits (37,386,303)SoB LLR Sapphire: Earned 20,000,000 credits (21,004,651)SR5 LLR Sapphire: Earned 20,000,000 credits (32,288,823)SGS LLR Ruby: Earned 2,000,000 credits (2,999,541)TRP LLR Turquoise: Earned 5,000,000 credits (5,867,891)Woodall LLR Ruby: Earned 2,000,000 credits (4,990,693)321 Sieve Turquoise: Earned 5,000,000 credits (6,056,158)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (27,921,016)PPS Sieve Double Silver: Earned 200,000,000 credits (442,160,586)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,990,608)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,217,057)AP 26/27 Turquoise: Earned 5,000,000 credits (5,773,404)GFN Sapphire: Earned 20,000,000 credits (25,847,602)PSA Double Silver: Earned 200,000,000 credits (420,586,383)
Message 69396 - Posted: 24 Sep 2013 | 12:44:18 UTC

Running a pps sv WU, here is what evga precisionX shows about my gpu...
(The GPU running pps sv is GPU 2)



Any ideas why, or any suggestions on how to make it use the whole GPU?

____________

275*2^3585539+1 is prime!!! (1079358 digits)

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Posts: 201
ID: 119185
Credit: 2,107,819,360
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321 LLR Jade: Earned 10,000,000 credits (12,864,897)Cullen LLR Turquoise: Earned 5,000,000 credits (5,039,267)ESP LLR Turquoise: Earned 5,000,000 credits (5,240,818)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,387,851)PPS LLR Ruby: Earned 2,000,000 credits (3,367,767)PSP LLR Turquoise: Earned 5,000,000 credits (6,084,153)SoB LLR Jade: Earned 10,000,000 credits (15,845,135)SR5 LLR Ruby: Earned 2,000,000 credits (2,609,913)SGS LLR Ruby: Earned 2,000,000 credits (2,726,189)TRP LLR Turquoise: Earned 5,000,000 credits (5,140,321)Woodall LLR Turquoise: Earned 5,000,000 credits (5,099,498)321 Sieve Ruby: Earned 2,000,000 credits (2,554,808)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,647,915)Generalized Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (11,373,349)PPS Sieve Double Bronze: Earned 100,000,000 credits (117,277,321)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (4,080,038)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,803,337)AP 26/27 Sapphire: Earned 20,000,000 credits (23,882,001)GFN Double Bronze: Earned 100,000,000 credits (161,783,359)PSA Double Amethyst: Earned 1,000,000,000 credits (1,710,011,424)
Message 69411 - Posted: 24 Sep 2013 | 21:46:39 UTC - in response to Message 69396.

I use an app_config to run 3 PPS Sieves on my 660 TI. I get 99% GPU usage.
You could try running more than 1 PPS Sieve.

Profile Mr. Cool*Project donor
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321 LLR Silver: Earned 100,000 credits (143,713)Cullen LLR Silver: Earned 100,000 credits (138,103)PPS LLR Gold: Earned 500,000 credits (502,784)PSP LLR Silver: Earned 100,000 credits (102,497)SoB LLR Silver: Earned 100,000 credits (190,719)SR5 LLR Bronze: Earned 10,000 credits (70,835)SGS LLR Turquoise: Earned 5,000,000 credits (8,845,411)TRP LLR Ruby: Earned 2,000,000 credits (3,125,636)Woodall LLR Silver: Earned 100,000 credits (148,137)321 Sieve Silver: Earned 100,000 credits (116,747)Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (44,749,048)Generalized Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (12,238,236)PPS Sieve Double Bronze: Earned 100,000,000 credits (115,323,192)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (9,389,756)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (24,791,259)GFN Amethyst: Earned 1,000,000 credits (1,019,215)PSA Double Silver: Earned 200,000,000 credits (411,000,181)
Message 69412 - Posted: 24 Sep 2013 | 21:47:31 UTC - in response to Message 69396.

1998golfer, try stopping all CPU tasks leaving only tasks for GPU. Also in a task manager you can increase GPU tasks priority to high.
See if it helps.

It often happens when one runs LLR tasks simultaneously with GPU PPSieve tasks. Running Riesel Sieve tasks on CPU doesn't give that effect.

Profile 1998golferProject donor
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Joined: 4 Dec 12
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Credit: 1,142,792,630
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Discovered 1 mega primeFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,231,988)Cullen LLR Turquoise: Earned 5,000,000 credits (5,124,261)ESP LLR Turquoise: Earned 5,000,000 credits (7,887,081)Generalized Cullen/Woodall LLR Emerald: Earned 50,000,000 credits (50,656,837)PPS LLR Jade: Earned 10,000,000 credits (12,827,578)PSP LLR Sapphire: Earned 20,000,000 credits (37,386,303)SoB LLR Sapphire: Earned 20,000,000 credits (21,004,651)SR5 LLR Sapphire: Earned 20,000,000 credits (32,288,823)SGS LLR Ruby: Earned 2,000,000 credits (2,999,541)TRP LLR Turquoise: Earned 5,000,000 credits (5,867,891)Woodall LLR Ruby: Earned 2,000,000 credits (4,990,693)321 Sieve Turquoise: Earned 5,000,000 credits (6,056,158)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (27,921,016)PPS Sieve Double Silver: Earned 200,000,000 credits (442,160,586)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,990,608)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,217,057)AP 26/27 Turquoise: Earned 5,000,000 credits (5,773,404)GFN Sapphire: Earned 20,000,000 credits (25,847,602)PSA Double Silver: Earned 200,000,000 credits (420,586,383)
Message 69413 - Posted: 24 Sep 2013 | 22:11:14 UTC - in response to Message 69412.

1998golfer, try stopping all CPU tasks leaving only tasks for GPU. Also in a task manager you can increase GPU tasks priority to high.
See if it helps.

It often happens when one runs LLR tasks simultaneously with GPU PPSieve tasks. Running Riesel Sieve tasks on CPU doesn't give that effect.

I changed the priority to high and it had no effect. Probably after this WU I'm going to go back to gfn sieving again.
____________

275*2^3585539+1 is prime!!! (1079358 digits)

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Profile Michael GoetzProject donor
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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 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 (10,697,736)PSP LLR Turquoise: Earned 5,000,000 credits (5,197,957)SoB LLR Sapphire: Earned 20,000,000 credits (34,221,148)SR5 LLR Turquoise: Earned 5,000,000 credits (8,972,537)SGS LLR Ruby: Earned 2,000,000 credits (2,014,138)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 (7,201,445)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 (20,110,788)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 (69,003,454)PSA Jade: Earned 10,000,000 credits (12,404,447)
Message 69414 - Posted: 24 Sep 2013 | 22:19:18 UTC - in response to Message 69411.

I use an app_config to run 3 PPS Sieves on my 660 TI. I get 99% GPU usage.
You could try running more than 1 PPS Sieve.


How much GPU utilization do you see without app_config?

You should also be getting 99% (or very close to 99%) GPU utilization with just 1 copy of the PPS sieve application. Three copies might be needed with other applications, but the CUDA PPS Sieve application (and probably all other GPU apps at PrimeGrid) drive the GPU extremely efficiently and you're unlikely to see any benefit from running more than one task simultaneously.

If you're seeing lower GPU usage -- especially dramatically lower usage -- you shouldn't be looking at bumping up the usage by running multiple copies of the app. Something is wrong and the problem should be corrected.

This is definitely NOT the case with GPU apps at other projects, but PrimeGrid has been exceptionally fortunate that some of our applications are extremely well suited to parallel execution, and therefore run very well on a GPU.

Usually there's no downside to running more apps, but in case of a driver crash, you'll lose three tasks instead of 1.
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321 LLR Silver: Earned 100,000 credits (143,713)Cullen LLR Silver: Earned 100,000 credits (138,103)PPS LLR Gold: Earned 500,000 credits (502,784)PSP LLR Silver: Earned 100,000 credits (102,497)SoB LLR Silver: Earned 100,000 credits (190,719)SR5 LLR Bronze: Earned 10,000 credits (70,835)SGS LLR Turquoise: Earned 5,000,000 credits (8,845,411)TRP LLR Ruby: Earned 2,000,000 credits (3,125,636)Woodall LLR Silver: Earned 100,000 credits (148,137)321 Sieve Silver: Earned 100,000 credits (116,747)Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (44,749,048)Generalized Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (12,238,236)PPS Sieve Double Bronze: Earned 100,000,000 credits (115,323,192)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (9,389,756)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (24,791,259)GFN Amethyst: Earned 1,000,000 credits (1,019,215)PSA Double Silver: Earned 200,000,000 credits (411,000,181)
Message 69421 - Posted: 25 Sep 2013 | 8:47:36 UTC - in response to Message 69413.

1998golfer, try stopping all CPU tasks leaving only tasks for GPU. Also in a task manager you can increase GPU tasks priority to high.
See if it helps.

It often happens when one runs LLR tasks simultaneously with GPU PPSieve tasks. Running Riesel Sieve tasks on CPU doesn't give that effect.

I changed the priority to high and it had no effect. Probably after this WU I'm going to go back to gfn sieving again.


Try stopping all CPU tasks and see if it helps to increase GPU usage. It it doesn't we need to consider something else.

Profile Gary Craig
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Discovered 1 mega prime321 LLR Ruby: Earned 2,000,000 credits (2,893,273)Cullen LLR Ruby: Earned 2,000,000 credits (2,440,687)ESP LLR Turquoise: Earned 5,000,000 credits (5,738,876)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (6,292,626)PPS LLR Turquoise: Earned 5,000,000 credits (7,999,122)PSP LLR Turquoise: Earned 5,000,000 credits (5,653,927)SoB LLR Jade: Earned 10,000,000 credits (10,083,384)SR5 LLR Turquoise: Earned 5,000,000 credits (5,040,727)SGS LLR Ruby: Earned 2,000,000 credits (3,335,673)TRP LLR Jade: Earned 10,000,000 credits (12,597,345)Woodall LLR Ruby: Earned 2,000,000 credits (2,282,622)321 Sieve Gold: Earned 500,000 credits (723,490)Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (59,788,598)Generalized Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,143,068)PPS Sieve Double Gold: Earned 500,000,000 credits (524,673,938)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,130,821)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,074,710)AP 26/27 Sapphire: Earned 20,000,000 credits (43,842,888)GFN Double Bronze: Earned 100,000,000 credits (195,584,133)PSA Emerald: Earned 50,000,000 credits (62,378,755)
Message 69423 - Posted: 25 Sep 2013 | 11:10:46 UTC - in response to Message 69421.

Try stopping all CPU tasks and see if it helps to increase GPU usage. It it doesn't we need to consider something else.

Yes. And, look for processes running on CPU, boinc or not, with Task Manager, that might be helping to starve the GPU.
--Gary

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Discovered 1 mega prime321 LLR Ruby: Earned 2,000,000 credits (3,002,800)ESP LLR Ruby: Earned 2,000,000 credits (2,006,207)PPS LLR Turquoise: Earned 5,000,000 credits (5,783,444)PSP LLR Ruby: Earned 2,000,000 credits (3,026,236)SoB LLR Ruby: Earned 2,000,000 credits (2,015,539)SR5 LLR Ruby: Earned 2,000,000 credits (2,000,481)SGS LLR Ruby: Earned 2,000,000 credits (2,000,014)TRP LLR Ruby: Earned 2,000,000 credits (3,000,865)321 Sieve Ruby: Earned 2,000,000 credits (2,000,357)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,000,096)PPS Sieve Emerald: Earned 50,000,000 credits (50,000,422)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,000,500)AP 26/27 Emerald: Earned 50,000,000 credits (50,003,824)GFN Sapphire: Earned 20,000,000 credits (48,575,841)PSA Emerald: Earned 50,000,000 credits (50,000,198)
Message 69438 - Posted: 26 Sep 2013 | 6:35:01 UTC

On GTX580 & i7-2600K PPS Sieve GPU time is always fixed (723s), but CPU time there are:
free CPU cores - 66s
with 2 TRP LLR - 81s
with 3 TRP LLR - 109s

Message boards : Proth Prime Search : PPS Sieve only using some GPU, Some of the time???

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