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Message boards : Number crunching : GTX 750Ti and higher end Nvidia cards - Cuda PPSieva

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Profile Crun-chiProject donor
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Joined: 25 Nov 09
Posts: 3146
ID: 50683
Credit: 96,842,734
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Eliminated 1 conjecture "k"Found 1 prime 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 PrimesFound 1 prime in the 2022 Tour de Primes321 LLR Silver: Earned 100,000 credits (229,492)Cullen LLR Silver: Earned 100,000 credits (110,733)PPS LLR Sapphire: Earned 20,000,000 credits (23,775,726)PSP LLR Silver: Earned 100,000 credits (104,385)SoB LLR Silver: Earned 100,000 credits (106,117)SR5 LLR Amethyst: Earned 1,000,000 credits (1,240,750)SGS LLR Amethyst: Earned 1,000,000 credits (1,325,726)TRP LLR Gold: Earned 500,000 credits (626,755)Woodall LLR Silver: Earned 100,000 credits (122,944)321 Sieve (suspended) Silver: Earned 100,000 credits (104,900)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,000,599)Generalized Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (515,556)PPS Sieve Jade: Earned 10,000,000 credits (11,905,227)TRP Sieve (suspended) Silver: Earned 100,000 credits (255,612)AP 26/27 Ruby: Earned 2,000,000 credits (2,583,960)GFN Sapphire: Earned 20,000,000 credits (43,224,143)WW Amethyst: Earned 1,000,000 credits (1,088,000)PSA Turquoise: Earned 5,000,000 credits (7,522,050)
Message 101432 - Posted: 29 Nov 2016 | 10:12:40 UTC

I do ( and I am still doing) some experiments with Nvidia card and Cuda -PPSieva.
For range that Primegrid take by any work unit ( k from 3-9999, N 9M-12M) at current stage, GPU utilization is 100% and CPu utilization in meantime is very low. But if you make your own ABCD file ,and take lets say 1100 candidates but in very small range Nmin= 2000000 Nmax=2005000, then speed is increased by factor 100, and also CPU utilization is going to nearly 75% per GPU instance.
So on quad core you can get sieving speed of about 1.2Mp/sec ( no that is no error) on 5 instances.
So you get blazing speed ( that make me possible to have sieva depth to 1T at only 10 days of work) but still have problem , and problem is GPU utilization.
With this settings , I can only reach 61-63% of GPU utilization.

Since PPSieva is made with CUDA2.3 is anything changed since today version of CUDA is 8. If someone rewrite code, will speed increase?



____________
92*10^1439761-1 NEAR-REPDIGIT PRIME :) :) :)
4 * 650^498101-1 CRUS PRIME
2022202116^131072+1 GENERALIZED FERMAT
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Joe O
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Posts: 51
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PSA Jade: Earned 10,000,000 credits (19,692,669)
Message 101554 - Posted: 1 Dec 2016 | 18:57:51 UTC - in response to Message 101432.

If someone rewrite code, will speed increase?

I don't know, but I would love to try.
Can someone send me the source code?

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1437 · 2^495800 + 1

Profile Michael GoetzProject donor
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Joined: 21 Jan 10
Posts: 13830
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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 2 mega primesFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de PrimesFound 2 primes in the 2021 Tour de PrimesFound 2 primes in the 2022 Tour de PrimesFound 1 mega prime in the 2022 Tour de PrimesFound 1 prime in the 2022 Tour de Primes Mountain Stage321 LLR Turquoise: Earned 5,000,000 credits (6,638,389)Cullen LLR Turquoise: Earned 5,000,000 credits (5,513,946)ESP LLR Turquoise: Earned 5,000,000 credits (7,150,009)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,094,541)PPS LLR Sapphire: Earned 20,000,000 credits (23,847,031)PSP LLR Turquoise: Earned 5,000,000 credits (7,956,186)SoB LLR Sapphire: Earned 20,000,000 credits (36,067,618)SR5 LLR Jade: Earned 10,000,000 credits (13,659,368)SGS LLR Turquoise: Earned 5,000,000 credits (5,037,630)TRP LLR Turquoise: Earned 5,000,000 credits (6,308,522)Woodall LLR Turquoise: Earned 5,000,000 credits (6,390,624)321 Sieve (suspended) Jade: Earned 10,000,000 credits (10,061,196)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 (22,885,121)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 (10,902,645)GFN Emerald: Earned 50,000,000 credits (94,116,926)WW Emerald: Earned 50,000,000 credits (88,244,000)PSA Jade: Earned 10,000,000 credits (12,445,029)
Message 101555 - Posted: 1 Dec 2016 | 19:00:27 UTC - in response to Message 101554.

If someone rewrite code, will speed increase?

I don't know, but I would love to try.
Can someone send me the source code?


There's a sticky thread, right here in the "Number Crunching" forum, titled "Source code repositories". You should find what you're looking for there.
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Profile Crun-chiProject donor
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Joined: 25 Nov 09
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Credit: 96,842,734
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Eliminated 1 conjecture "k"Found 1 prime 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 PrimesFound 1 prime in the 2022 Tour de Primes321 LLR Silver: Earned 100,000 credits (229,492)Cullen LLR Silver: Earned 100,000 credits (110,733)PPS LLR Sapphire: Earned 20,000,000 credits (23,775,726)PSP LLR Silver: Earned 100,000 credits (104,385)SoB LLR Silver: Earned 100,000 credits (106,117)SR5 LLR Amethyst: Earned 1,000,000 credits (1,240,750)SGS LLR Amethyst: Earned 1,000,000 credits (1,325,726)TRP LLR Gold: Earned 500,000 credits (626,755)Woodall LLR Silver: Earned 100,000 credits (122,944)321 Sieve (suspended) Silver: Earned 100,000 credits (104,900)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,000,599)Generalized Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (515,556)PPS Sieve Jade: Earned 10,000,000 credits (11,905,227)TRP Sieve (suspended) Silver: Earned 100,000 credits (255,612)AP 26/27 Ruby: Earned 2,000,000 credits (2,583,960)GFN Sapphire: Earned 20,000,000 credits (43,224,143)WW Amethyst: Earned 1,000,000 credits (1,088,000)PSA Turquoise: Earned 5,000,000 credits (7,522,050)
Message 101564 - Posted: 1 Dec 2016 | 20:49:41 UTC - in response to Message 101554.

If someone rewrite code, will speed increase?

I don't know, but I would love to try.
Can someone send me the source code?


That is great: if you ever make any build for Win: I will test that immediately! :)
____________
92*10^1439761-1 NEAR-REPDIGIT PRIME :) :) :)
4 * 650^498101-1 CRUS PRIME
2022202116^131072+1 GENERALIZED FERMAT
Proud member of team Aggie The Pew. Go Aggie!

Kelly DaviesProject donor
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Joined: 4 Apr 10
Posts: 107
ID: 58144
Credit: 6,556,964,397
RAC: 4,651,122
321 LLR Ruby: Earned 2,000,000 credits (2,050,518)Cullen LLR Ruby: Earned 2,000,000 credits (2,282,176)ESP LLR Ruby: Earned 2,000,000 credits (3,272,209)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,142,891)PPS LLR Turquoise: Earned 5,000,000 credits (5,043,177)PSP LLR Turquoise: Earned 5,000,000 credits (5,799,541)SoB LLR Double Bronze: Earned 100,000,000 credits (180,081,042)SR5 LLR Turquoise: Earned 5,000,000 credits (7,211,068)SGS LLR Turquoise: Earned 5,000,000 credits (5,042,519)TRP LLR Ruby: Earned 2,000,000 credits (2,010,534)Woodall LLR Ruby: Earned 2,000,000 credits (2,077,196)321 Sieve (suspended) Ruby: Earned 2,000,000 credits (2,483,203)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (28,991,973)PPS Sieve Double Turquoise: Earned 5,000,000,000 credits (6,102,339,181)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Sapphire: Earned 20,000,000 credits (24,236,704)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,007,588)AP 26/27 Jade: Earned 10,000,000 credits (10,058,984)GFN Sapphire: Earned 20,000,000 credits (22,461,255)WW Double Bronze: Earned 100,000,000 credits (138,960,000)PSA Gold: Earned 500,000 credits (525,865)
Message 101747 - Posted: 5 Dec 2016 | 6:57:14 UTC - in response to Message 101564.
Last modified: 5 Dec 2016 | 6:57:55 UTC

On a side note, i find the 650Ti about 50% faster than the 750Ti on PPS sieve, but the 750 is better at GFN
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Message boards : Number crunching : GTX 750Ti and higher end Nvidia cards - Cuda PPSieva

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