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Message boards : Proth Prime Search : PPS Sieve CUDA

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Profile [AF>Amis des Lapins] Phil1966Project donor
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Joined: 20 Jul 13
Posts: 117
ID: 242019
Credit: 356,255,749
RAC: 59,650
Found 3 primes in the 2019 Tour de Primes321 LLR Bronze: Earned 10,000 credits (29,326)ESP LLR Bronze: Earned 10,000 credits (14,639)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (382,570)PPS LLR Ruby: Earned 2,000,000 credits (2,300,820)PSP LLR Bronze: Earned 10,000 credits (48,561)SR5 LLR Silver: Earned 100,000 credits (162,877)SGS LLR Silver: Earned 100,000 credits (198,570)TRP LLR Bronze: Earned 10,000 credits (25,570)Woodall LLR Bronze: Earned 10,000 credits (17,205)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (3,515,478)PPS Sieve Double Silver: Earned 200,000,000 credits (281,643,679)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,661,419)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,495,590)AP 26/27 Sapphire: Earned 20,000,000 credits (25,491,115)GFN Sapphire: Earned 20,000,000 credits (25,345,052)PSA Turquoise: Earned 5,000,000 credits (6,923,280)
Message 73327 - Posted: 9 Feb 2014 | 15:43:06 UTC

Hi Michael,

I hope this message finds you well.

I have 2 questions about crunching on PPS Sieve CUDA

a) Why is the GPU LOAD so irregular , almost sinusoidal ?
=> in order to avoid "sinusoidal use" of the GPU, I run 2 WU's at the same time => GPU LOAD is almost stable.

b) CPU Time : During a long period of time, the CPU time of a single WU was approx 25 %.
Then it jumped to almost 50 %. Today, I realise the CPU time decreased again to approx 25 % , together with a shorter GPU calculation time.

Are there any particular reasons to explain these 2 points ?

Thank You very much,

Kind Regards,

Philippe

Profile [AF>Amis des Lapins] Phil1966Project donor
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Joined: 20 Jul 13
Posts: 117
ID: 242019
Credit: 356,255,749
RAC: 59,650
Found 3 primes in the 2019 Tour de Primes321 LLR Bronze: Earned 10,000 credits (29,326)ESP LLR Bronze: Earned 10,000 credits (14,639)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (382,570)PPS LLR Ruby: Earned 2,000,000 credits (2,300,820)PSP LLR Bronze: Earned 10,000 credits (48,561)SR5 LLR Silver: Earned 100,000 credits (162,877)SGS LLR Silver: Earned 100,000 credits (198,570)TRP LLR Bronze: Earned 10,000 credits (25,570)Woodall LLR Bronze: Earned 10,000 credits (17,205)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (3,515,478)PPS Sieve Double Silver: Earned 200,000,000 credits (281,643,679)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,661,419)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,495,590)AP 26/27 Sapphire: Earned 20,000,000 credits (25,491,115)GFN Sapphire: Earned 20,000,000 credits (25,345,052)PSA Turquoise: Earned 5,000,000 credits (6,923,280)
Message 73332 - Posted: 9 Feb 2014 | 17:15:11 UTC - in response to Message 73327.

NB : Point b) apparently only valid for my GTX770 / i7 4770K and not the GTX660Ti / AMD Phenom II X4 955

Profile Gary Craig
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Discovered 1 mega prime321 LLR Ruby: Earned 2,000,000 credits (2,614,439)Cullen LLR Ruby: Earned 2,000,000 credits (2,440,687)ESP LLR Turquoise: Earned 5,000,000 credits (5,019,435)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,332,017)PPS LLR Turquoise: Earned 5,000,000 credits (6,074,990)PSP LLR Turquoise: Earned 5,000,000 credits (5,000,433)SoB LLR Ruby: Earned 2,000,000 credits (4,087,062)SR5 LLR Turquoise: Earned 5,000,000 credits (5,040,727)SGS LLR Ruby: Earned 2,000,000 credits (3,206,074)TRP LLR Jade: Earned 10,000,000 credits (11,804,962)Woodall LLR Ruby: Earned 2,000,000 credits (2,282,622)321 Sieve Silver: Earned 100,000 credits (200,818)Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (59,788,598)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,143,068)PPS Sieve Double Silver: Earned 200,000,000 credits (451,735,611)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 Turquoise: Earned 5,000,000 credits (5,454,603)GFN Double Bronze: Earned 100,000,000 credits (112,561,780)PSA Emerald: Earned 50,000,000 credits (62,378,755)
Message 73335 - Posted: 9 Feb 2014 | 17:52:47 UTC - in response to Message 73332.

Theory on (b): Your 4770K has hyperthreading turned on. Each CPU thread is therefore only half as "capable", and so CPU usage percentage on a single thread for a GPU job will appear to double. AMD CPUs do not implement hyperthreading.

That's my take on this. If I've misunderstood your observations, my apologies.

--Gary

Profile [AF>Amis des Lapins] Phil1966Project donor
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Joined: 20 Jul 13
Posts: 117
ID: 242019
Credit: 356,255,749
RAC: 59,650
Found 3 primes in the 2019 Tour de Primes321 LLR Bronze: Earned 10,000 credits (29,326)ESP LLR Bronze: Earned 10,000 credits (14,639)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (382,570)PPS LLR Ruby: Earned 2,000,000 credits (2,300,820)PSP LLR Bronze: Earned 10,000 credits (48,561)SR5 LLR Silver: Earned 100,000 credits (162,877)SGS LLR Silver: Earned 100,000 credits (198,570)TRP LLR Bronze: Earned 10,000 credits (25,570)Woodall LLR Bronze: Earned 10,000 credits (17,205)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (3,515,478)PPS Sieve Double Silver: Earned 200,000,000 credits (281,643,679)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,661,419)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,495,590)AP 26/27 Sapphire: Earned 20,000,000 credits (25,491,115)GFN Sapphire: Earned 20,000,000 credits (25,345,052)PSA Turquoise: Earned 5,000,000 credits (6,923,280)
Message 73340 - Posted: 9 Feb 2014 | 18:47:31 UTC - in response to Message 73335.

Hi Gary,

Thank you for your message.

However, the CPU time changed from 25 % -> 50 % -> 25 % (of GPU time)
with HT on all the time.

I switched HT Off only once, to run AVX WU - GFN Short I believe, during the last GFN challenge.

Thank You

Kind Regards,

Philippe

Profile [AF>Amis des Lapins] Phil1966Project donor
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Joined: 20 Jul 13
Posts: 117
ID: 242019
Credit: 356,255,749
RAC: 59,650
Found 3 primes in the 2019 Tour de Primes321 LLR Bronze: Earned 10,000 credits (29,326)ESP LLR Bronze: Earned 10,000 credits (14,639)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (382,570)PPS LLR Ruby: Earned 2,000,000 credits (2,300,820)PSP LLR Bronze: Earned 10,000 credits (48,561)SR5 LLR Silver: Earned 100,000 credits (162,877)SGS LLR Silver: Earned 100,000 credits (198,570)TRP LLR Bronze: Earned 10,000 credits (25,570)Woodall LLR Bronze: Earned 10,000 credits (17,205)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (3,515,478)PPS Sieve Double Silver: Earned 200,000,000 credits (281,643,679)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,661,419)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,495,590)AP 26/27 Sapphire: Earned 20,000,000 credits (25,491,115)GFN Sapphire: Earned 20,000,000 credits (25,345,052)PSA Turquoise: Earned 5,000,000 credits (6,923,280)
Message 73366 - Posted: 10 Feb 2014 | 17:37:11 UTC - in response to Message 73340.
Last modified: 10 Feb 2014 | 18:21:31 UTC

Hi !

No worries, forget it. It runs very well now.

Fine for me.

Thank You

Philippe

Profile Rick Reynolds
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Joined: 13 Aug 10
Posts: 6752
ID: 65483
Credit: 3,608,711,180
RAC: 3,548,986
Discovered 1 mega primeFound 2 primes in the 2018 Tour de PrimesFound 2 primes in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,148,880)Cullen LLR Ruby: Earned 2,000,000 credits (2,773,730)ESP LLR Ruby: Earned 2,000,000 credits (2,084,793)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (3,320,991)PPS LLR Jade: Earned 10,000,000 credits (13,530,535)PSP LLR Ruby: Earned 2,000,000 credits (2,084,850)SoB LLR Turquoise: Earned 5,000,000 credits (5,014,268)SR5 LLR Jade: Earned 10,000,000 credits (11,169,992)SGS LLR Turquoise: Earned 5,000,000 credits (6,112,748)TRP LLR Turquoise: Earned 5,000,000 credits (5,110,887)Woodall LLR Ruby: Earned 2,000,000 credits (3,612,313)321 Sieve Gold: Earned 500,000 credits (907,820)Cullen/Woodall Sieve (suspended) Double Bronze: Earned 100,000,000 credits (127,922,665)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (23,889,612)PPS Sieve Double Amethyst: Earned 1,000,000,000 credits (1,759,976,638)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (8,134,964)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,013,696)AP 26/27 Double Bronze: Earned 100,000,000 credits (105,833,611)GFN Double Bronze: Earned 100,000,000 credits (147,475,735)PSA Double Amethyst: Earned 1,000,000,000 credits (1,370,700,486)
Message 73971 - Posted: 3 Mar 2014 | 1:09:38 UTC

Was a change made to the pps sieve tasks to double check more tasks or am I just getting an abnormal number of units requiring the quorum of 2 or are my systems now more suspect for some reason?

Cheers Rick
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Message 73972 - Posted: 3 Mar 2014 | 1:24:49 UTC

Missing factors were found therefore PrimeGrid is doing a doublecheck on the range from 0P to 1P.
Wait for JimB explanation....
____________

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 (2,063,182)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (2,001,789)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,115,831)PPS LLR Ruby: Earned 2,000,000 credits (2,768,012)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (30,035,643)SR5 LLR Turquoise: Earned 5,000,000 credits (7,691,131)SGS LLR Ruby: Earned 2,000,000 credits (2,011,264)TRP LLR Ruby: Earned 2,000,000 credits (2,433,520)Woodall LLR Ruby: Earned 2,000,000 credits (2,176,414)321 Sieve Gold: Earned 500,000 credits (825,098)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve 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 Turquoise: Earned 5,000,000 credits (7,086,053)GFN Emerald: Earned 50,000,000 credits (60,578,808)PSA Jade: Earned 10,000,000 credits (10,038,118)
Message 73973 - Posted: 3 Mar 2014 | 1:38:32 UTC - in response to Message 73972.

Missing factors were found therefore PrimeGrid is doing a doublecheck on the range from 0P to 1P.
Wait for JimB explanation....


That pretty much sums it up. We're now doing full double checking on PPS-Sieve, so two tasks will be generated for each WU right from the start.
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!

My lucky number is 75898524288+1

Profile Rick Reynolds
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Joined: 13 Aug 10
Posts: 6752
ID: 65483
Credit: 3,608,711,180
RAC: 3,548,986
Discovered 1 mega primeFound 2 primes in the 2018 Tour de PrimesFound 2 primes in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,148,880)Cullen LLR Ruby: Earned 2,000,000 credits (2,773,730)ESP LLR Ruby: Earned 2,000,000 credits (2,084,793)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (3,320,991)PPS LLR Jade: Earned 10,000,000 credits (13,530,535)PSP LLR Ruby: Earned 2,000,000 credits (2,084,850)SoB LLR Turquoise: Earned 5,000,000 credits (5,014,268)SR5 LLR Jade: Earned 10,000,000 credits (11,169,992)SGS LLR Turquoise: Earned 5,000,000 credits (6,112,748)TRP LLR Turquoise: Earned 5,000,000 credits (5,110,887)Woodall LLR Ruby: Earned 2,000,000 credits (3,612,313)321 Sieve Gold: Earned 500,000 credits (907,820)Cullen/Woodall Sieve (suspended) Double Bronze: Earned 100,000,000 credits (127,922,665)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (23,889,612)PPS Sieve Double Amethyst: Earned 1,000,000,000 credits (1,759,976,638)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (8,134,964)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,013,696)AP 26/27 Double Bronze: Earned 100,000,000 credits (105,833,611)GFN Double Bronze: Earned 100,000,000 credits (147,475,735)PSA Double Amethyst: Earned 1,000,000,000 credits (1,370,700,486)
Message 73974 - Posted: 3 Mar 2014 | 2:17:27 UTC

Thanks. Was just curious. I do remember the notes on the discovered issues with lots of work done in the past.
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Profile Rick Reynolds
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Joined: 13 Aug 10
Posts: 6752
ID: 65483
Credit: 3,608,711,180
RAC: 3,548,986
Discovered 1 mega primeFound 2 primes in the 2018 Tour de PrimesFound 2 primes in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,148,880)Cullen LLR Ruby: Earned 2,000,000 credits (2,773,730)ESP LLR Ruby: Earned 2,000,000 credits (2,084,793)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (3,320,991)PPS LLR Jade: Earned 10,000,000 credits (13,530,535)PSP LLR Ruby: Earned 2,000,000 credits (2,084,850)SoB LLR Turquoise: Earned 5,000,000 credits (5,014,268)SR5 LLR Jade: Earned 10,000,000 credits (11,169,992)SGS LLR Turquoise: Earned 5,000,000 credits (6,112,748)TRP LLR Turquoise: Earned 5,000,000 credits (5,110,887)Woodall LLR Ruby: Earned 2,000,000 credits (3,612,313)321 Sieve Gold: Earned 500,000 credits (907,820)Cullen/Woodall Sieve (suspended) Double Bronze: Earned 100,000,000 credits (127,922,665)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (23,889,612)PPS Sieve Double Amethyst: Earned 1,000,000,000 credits (1,759,976,638)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (8,134,964)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,013,696)AP 26/27 Double Bronze: Earned 100,000,000 credits (105,833,611)GFN Double Bronze: Earned 100,000,000 credits (147,475,735)PSA Double Amethyst: Earned 1,000,000,000 credits (1,370,700,486)
Message 74125 - Posted: 6 Mar 2014 | 1:31:25 UTC

It appears my factor rate is climbing... maybe

Profile 1998golferProject donor
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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 Ruby: Earned 2,000,000 credits (2,712,185)Cullen LLR Turquoise: Earned 5,000,000 credits (5,124,261)ESP LLR Turquoise: Earned 5,000,000 credits (7,614,891)Generalized Cullen/Woodall LLR Emerald: Earned 50,000,000 credits (50,611,606)PPS LLR Jade: Earned 10,000,000 credits (11,735,161)PSP LLR Sapphire: Earned 20,000,000 credits (36,318,010)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 (2,771,356)TRP LLR Turquoise: Earned 5,000,000 credits (5,004,087)Woodall LLR Ruby: Earned 2,000,000 credits (2,824,779)321 Sieve Gold: Earned 500,000 credits (680,632)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (27,921,016)PPS Sieve Double Silver: Earned 200,000,000 credits (303,794,520)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 Ruby: Earned 2,000,000 credits (2,082,145)GFN Jade: Earned 10,000,000 credits (19,677,611)PSA Double Silver: Earned 200,000,000 credits (420,544,183)
Message 75498 - Posted: 13 Apr 2014 | 18:19:00 UTC

How can i configure BOINC to run 2 pps sieve tasks at a time on my GTX 760? My GPU usage is constantly bobbing between 98% and 72%

Thank you,
-1998golfer
____________

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

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Profile Khali
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321 LLR Silver: Earned 100,000 credits (137,643)Cullen LLR Silver: Earned 100,000 credits (184,954)ESP LLR Silver: Earned 100,000 credits (312,468)PPS LLR Silver: Earned 100,000 credits (173,515)SR5 LLR Silver: Earned 100,000 credits (118,230)SGS LLR Silver: Earned 100,000 credits (185,199)TRP LLR Silver: Earned 100,000 credits (117,473)Woodall LLR Silver: Earned 100,000 credits (153,036)PPS Sieve Sapphire: Earned 20,000,000 credits (22,855,380)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Silver: Earned 100,000 credits (124,922)TRP Sieve (suspended) Silver: Earned 100,000 credits (236,319)GFN Gold: Earned 500,000 credits (624,440)
Message 75765 - Posted: 21 Apr 2014 | 21:52:33 UTC

I am getting the same GPU load fluctuation on my GTX 680. This causes my fan to speed up then slow down in time with the GPU load. It got annoying so I set the fan to run at a set speed fast enough to keep things semi cool.

Good question 1998golfer, I have yet to figure that out myself. Its not anything I can find in the project settings or in the Boinc client. Then again I am probably overlooking something obvious like normal.

Profile 1998golferProject donor
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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 Ruby: Earned 2,000,000 credits (2,712,185)Cullen LLR Turquoise: Earned 5,000,000 credits (5,124,261)ESP LLR Turquoise: Earned 5,000,000 credits (7,614,891)Generalized Cullen/Woodall LLR Emerald: Earned 50,000,000 credits (50,611,606)PPS LLR Jade: Earned 10,000,000 credits (11,735,161)PSP LLR Sapphire: Earned 20,000,000 credits (36,318,010)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 (2,771,356)TRP LLR Turquoise: Earned 5,000,000 credits (5,004,087)Woodall LLR Ruby: Earned 2,000,000 credits (2,824,779)321 Sieve Gold: Earned 500,000 credits (680,632)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (27,921,016)PPS Sieve Double Silver: Earned 200,000,000 credits (303,794,520)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 Ruby: Earned 2,000,000 credits (2,082,145)GFN Jade: Earned 10,000,000 credits (19,677,611)PSA Double Silver: Earned 200,000,000 credits (420,544,183)
Message 75768 - Posted: 21 Apr 2014 | 22:24:33 UTC - in response to Message 75765.
Last modified: 21 Apr 2014 | 22:25:30 UTC

I am getting the same GPU load fluctuation on my GTX 680. This causes my fan to speed up then slow down in time with the GPU load. It got annoying so I set the fan to run at a set speed fast enough to keep things semi cool.

Good question 1998golfer, I have yet to figure that out myself. Its not anything I can find in the project settings or in the Boinc client. Then again I am probably overlooking something obvious like normal.

I have since figured it out.
Here is how to do it:(assuming you are on windows)
In your BOINC data directory, go to projects then www.primegrid.com
In that folder, create a new file and call it app_config.xml
Inside that file, put the following:

<app_config>
<app>
<name>pps_sr2sieve</name>
<max_concurrent>2</max_concurrent>
<gpu_versions>
<gpu_usage>0.5</gpu_usage>
<cpu_usage>0.05</cpu_usage>
</gpu_versions>
</app>
</app_config>

Save the file, reboot your computer. open boinc and it should run two PPS Sieve tasks at once.
____________

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

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Credit: 486,104,653
RAC: 365,796
Discovered 2 mega primesFound 1 prime in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,090,406)Cullen LLR Gold: Earned 500,000 credits (776,297)ESP LLR Amethyst: Earned 1,000,000 credits (1,542,446)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,027,821)PPS LLR Turquoise: Earned 5,000,000 credits (9,864,779)PSP LLR Ruby: Earned 2,000,000 credits (3,777,949)SoB LLR Jade: Earned 10,000,000 credits (14,105,913)SR5 LLR Turquoise: Earned 5,000,000 credits (5,978,312)SGS LLR Ruby: Earned 2,000,000 credits (2,898,319)TRP LLR Turquoise: Earned 5,000,000 credits (6,582,501)Woodall LLR Amethyst: Earned 1,000,000 credits (1,693,614)321 Sieve Amethyst: Earned 1,000,000 credits (1,389,624)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,571,178)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (48,861,580)PPS Sieve Double Silver: Earned 200,000,000 credits (200,524,556)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,165,888)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,071,454)AP 26/27 Ruby: Earned 2,000,000 credits (2,544,827)GFN Sapphire: Earned 20,000,000 credits (39,883,951)PSA Double Bronze: Earned 100,000,000 credits (102,762,384)
Message 75770 - Posted: 22 Apr 2014 | 4:55:16 UTC - in response to Message 75768.
Last modified: 22 Apr 2014 | 5:21:59 UTC

Thanks for that app_config.xml file. It also works in Linux, boosting output of a single GTX 760 by 17%, doing 2 PPS sieve WU in 1327 sec whereas previously it did 1 WU in 803 sec. The GPU runs hotter now by a few degrees, up to 70 C now.

Be sure to give BOINC enough CPU cores to run GPU tasks along with CPU tasks. I set mine to 55% of max to prevent LLR from using HT but allowing multiple GPU tasks to run.

You shouldn't need to reboot to activate the new settings, just use the BOINC manager advanced menu item "Read config files".

If your desktop acts sluggish, exiting the BOINC manager without stopping the running tasks improves things significantly (in Linux).

I'm trying it with 4 simultaneous WU to see what happens to runtime. The 4 WU and desktop altogether use less that 500 MB of GPU memory, and GPU temperature has risen to 71 C.

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Joined: 16 Feb 10
Posts: 668
ID: 55391
Credit: 486,104,653
RAC: 365,796
Discovered 2 mega primesFound 1 prime in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,090,406)Cullen LLR Gold: Earned 500,000 credits (776,297)ESP LLR Amethyst: Earned 1,000,000 credits (1,542,446)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,027,821)PPS LLR Turquoise: Earned 5,000,000 credits (9,864,779)PSP LLR Ruby: Earned 2,000,000 credits (3,777,949)SoB LLR Jade: Earned 10,000,000 credits (14,105,913)SR5 LLR Turquoise: Earned 5,000,000 credits (5,978,312)SGS LLR Ruby: Earned 2,000,000 credits (2,898,319)TRP LLR Turquoise: Earned 5,000,000 credits (6,582,501)Woodall LLR Amethyst: Earned 1,000,000 credits (1,693,614)321 Sieve Amethyst: Earned 1,000,000 credits (1,389,624)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,571,178)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (48,861,580)PPS Sieve Double Silver: Earned 200,000,000 credits (200,524,556)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,165,888)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,071,454)AP 26/27 Ruby: Earned 2,000,000 credits (2,544,827)GFN Sapphire: Earned 20,000,000 credits (39,883,951)PSA Double Bronze: Earned 100,000,000 credits (102,762,384)
Message 75782 - Posted: 22 Apr 2014 | 13:05:45 UTC - in response to Message 75770.

I'm trying it with 4 simultaneous WU to see what happens to runtime. The 4 WU and desktop altogether use less that 500 MB of GPU memory, and GPU temperature has risen to 71 C.


I observe practically no difference between running 2 WU and 4 WU on the same GPU. The average observed runtime is 41 seconds less per WU with 4 WU compared to 2 WU, but that is within the normal variation in runtimes I see with just 2 WU, in effect a total difference of about 2 PPS sieve WU per day.

This was not a high-precision comparison. BOINC was also running 4 PPS LLR at the same time, the BOINC manager was not running, and the usual assortment of Linux GUI and file services was running, including Xorg with Cinnamon desktop (using about 3% of one i7-920 core).

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