PrimeGrid
Please visit donation page to help the project cover running costs for this month

Toggle Menu

Join PrimeGrid

Returning Participants

Community

Leader Boards

Results

Other

drummers-lowrise

Advanced search

Message boards : Proth Prime Search : PPS Sieve on a 2080

Author Message
Profile PenguinProject donor
Avatar
Send message
Joined: 14 Sep 12
Posts: 435
ID: 172547
Credit: 730,134,098
RAC: 1,639,850
Found 1 prime in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,295,766)Cullen LLR Amethyst: Earned 1,000,000 credits (1,080,659)ESP LLR Turquoise: Earned 5,000,000 credits (7,353,526)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,139,193)PPS LLR Turquoise: Earned 5,000,000 credits (9,438,004)PSP LLR Ruby: Earned 2,000,000 credits (3,331,034)SoB LLR Amethyst: Earned 1,000,000 credits (1,301,215)SR5 LLR Turquoise: Earned 5,000,000 credits (5,005,004)SGS LLR Ruby: Earned 2,000,000 credits (4,528,311)TRP LLR Ruby: Earned 2,000,000 credits (2,032,589)Woodall LLR Ruby: Earned 2,000,000 credits (2,016,420)321 Sieve Ruby: Earned 2,000,000 credits (4,943,118)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,018,833)PPS Sieve Emerald: Earned 50,000,000 credits (68,849,304)TRP Sieve (suspended) Silver: Earned 100,000 credits (110,630)AP 26/27 Emerald: Earned 50,000,000 credits (55,474,003)GFN Emerald: Earned 50,000,000 credits (87,435,099)PSA Double Silver: Earned 200,000,000 credits (467,771,676)
Message 125365 - Posted: 24 Jan 2019 | 16:37:15 UTC

Almost a waste to use a good GPU like a 2080 for sieving when speed isn't really required. It really doesn't matter at all if you get a "1st" for finishing a sieve compared to finding a prime. It nice to do a lot of work very quickly anyways though.

Now if credit if what you are after, the 2080 tears PPS Sieve up pretty nicely. Ran it for about 12 hrs and averaged 224 seconds to do 2 simultaneous tasks. That's 1min 52 sec per task. Each task yields 3,371 credits. So that's equal to ~1,805 credits per minute. That's 108,300 credits per hour.

Uses about the max power just slightly below 240watts, and hangs around the 98-99% range for GPU usage.

Profile Eudy SilvaProject donor
Send message
Joined: 26 Aug 17
Posts: 866
ID: 918937
Credit: 134,955,834
RAC: 103,021
Found 2 primes in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de Primes321 LLR Gold: Earned 500,000 credits (834,329)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 (6,504,643)PSP LLR Gold: Earned 500,000 credits (742,121)SoB LLR Ruby: Earned 2,000,000 credits (2,113,239)SR5 LLR Ruby: Earned 2,000,000 credits (2,784,784)SGS LLR Amethyst: Earned 1,000,000 credits (1,162,202)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 (1,036,805)Generalized Cullen/Woodall Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,005,331)PPS Sieve Emerald: Earned 50,000,000 credits (63,539,979)AP 26/27 Sapphire: Earned 20,000,000 credits (22,224,371)GFN Sapphire: Earned 20,000,000 credits (25,599,556)PSA Ruby: Earned 2,000,000 credits (2,059,222)
Message 125367 - Posted: 24 Jan 2019 | 17:28:59 UTC - in response to Message 125365.

It's a RAC booster beast !
____________
"Accidit in puncto, quod non contingit in anno."
Something that does not occur in a year may, perchance, happen in a moment.

Scott BrownProject donor
Volunteer moderator
Project administrator
Volunteer tester
Project scientist
Avatar
Send message
Joined: 17 Oct 05
Posts: 1923
ID: 1178
Credit: 6,435,450,186
RAC: 2,878,740
Discovered the World's First base 116 Generalized Cullen prime!!!Discovered 16 mega primesEliminated 7 conjecture "k"sDiscovered 1 Sophie Germain pairDiscovered 1 Fermat divisor2012 Tour de Primes highest prime count2012 Tour de Primes most Mountain Stage primes2015 Tour de Primes highest prime count2016 Tour de Primes highest prime countFound 23 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de PrimesFound 2 primes in the 2018 Tour de Primes Mountain Stage2019 Tour de Primes highest prime countFound 22 primes in the 2019 Tour de Primes321 LLR Double Bronze: Earned 100,000,000 credits (100,829,118)Cullen LLR Double Bronze: Earned 100,000,000 credits (103,870,990)ESP LLR Double Bronze: Earned 100,000,000 credits (137,499,413)Generalized Cullen/Woodall LLR Double Bronze: Earned 100,000,000 credits (108,461,080)PPS LLR Double Silver: Earned 200,000,000 credits (382,471,045)PSP LLR Double Bronze: Earned 100,000,000 credits (108,003,110)SoB LLR Double Bronze: Earned 100,000,000 credits (135,747,083)SR5 LLR Double Silver: Earned 200,000,000 credits (201,224,339)SGS LLR Double Bronze: Earned 100,000,000 credits (161,044,052)TPS LLR (retired) Silver: Earned 100,000 credits (235,439)TRP LLR Double Bronze: Earned 100,000,000 credits (121,443,822)Woodall LLR Double Bronze: Earned 100,000,000 credits (101,447,725)321 Sieve Double Silver: Earned 200,000,000 credits (203,510,966)Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (83,794,448)Generalized Cullen/Woodall Sieve (suspended) Double Silver: Earned 200,000,000 credits (285,139,652)PPS Sieve Double Ruby: Earned 2,000,000,000 credits (2,108,274,845)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Double Silver: Earned 200,000,000 credits (203,523,358)TRP Sieve (suspended) Double Silver: Earned 200,000,000 credits (201,489,157)AP 26/27 Double Bronze: Earned 100,000,000 credits (135,790,733)GFN Double Amethyst: Earned 1,000,000,000 credits (1,292,663,451)PSA Double Silver: Earned 200,000,000 credits (259,058,048)
Message 125369 - Posted: 24 Jan 2019 | 18:08:07 UTC

Likely because PPS sieve is a CUDA application (rather than OCL), older cards do relatively well compared to newer architectures. For example, a GTX 1080 runs them around 300 seconds. Even an old GTX 660 Ti runs them around 750 sec each. So the new RTX cards have greater performance gaps on some of the GFN projects and the AP27 project than here...but if credit is all one is after, the payout is still here.

Also, I think the RTX cards are bottlenecked a good bit on PPS Sieve. For example, my RTX 2070 had average times of 229 seconds (almost the same as your 2080). I would guess that running 2 PPS Sieves at a time on these cards will yield noticeable credit yields.





Profile PenguinProject donor
Avatar
Send message
Joined: 14 Sep 12
Posts: 435
ID: 172547
Credit: 730,134,098
RAC: 1,639,850
Found 1 prime in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,295,766)Cullen LLR Amethyst: Earned 1,000,000 credits (1,080,659)ESP LLR Turquoise: Earned 5,000,000 credits (7,353,526)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,139,193)PPS LLR Turquoise: Earned 5,000,000 credits (9,438,004)PSP LLR Ruby: Earned 2,000,000 credits (3,331,034)SoB LLR Amethyst: Earned 1,000,000 credits (1,301,215)SR5 LLR Turquoise: Earned 5,000,000 credits (5,005,004)SGS LLR Ruby: Earned 2,000,000 credits (4,528,311)TRP LLR Ruby: Earned 2,000,000 credits (2,032,589)Woodall LLR Ruby: Earned 2,000,000 credits (2,016,420)321 Sieve Ruby: Earned 2,000,000 credits (4,943,118)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,018,833)PPS Sieve Emerald: Earned 50,000,000 credits (68,849,304)TRP Sieve (suspended) Silver: Earned 100,000 credits (110,630)AP 26/27 Emerald: Earned 50,000,000 credits (55,474,003)GFN Emerald: Earned 50,000,000 credits (87,435,099)PSA Double Silver: Earned 200,000,000 credits (467,771,676)
Message 125379 - Posted: 24 Jan 2019 | 23:53:20 UTC - in response to Message 125369.

Likely because PPS sieve is a CUDA application (rather than OCL), older cards do relatively well compared to newer architectures. For example, a GTX 1080 runs them around 300 seconds. Even an old GTX 660 Ti runs them around 750 sec each. So the new RTX cards have greater performance gaps on some of the GFN projects and the AP27 project than here...but if credit is all one is after, the payout is still here.

Also, I think the RTX cards are bottlenecked a good bit on PPS Sieve. For example, my RTX 2070 had average times of 229 seconds (almost the same as your 2080). I would guess that running 2 PPS Sieves at a time on these cards will yield noticeable credit yields.


Yes that is for 2 simultaneously. 2 at a time in ~224 seconds.



Profile AzmodesProject donor
Avatar
Send message
Joined: 30 Dec 16
Posts: 160
ID: 479275
Credit: 1,307,839,614
RAC: 391,010
Discovered 1 mega primeDiscovered 1 AP26Found 2 primes in the 2018 Tour de PrimesFound 2 primes in the 2019 Tour de PrimesFound 1 mega prime in the 2019 Tour de Primes321 LLR Silver: Earned 100,000 credits (402,418)Cullen LLR Bronze: Earned 10,000 credits (29,920)ESP LLR Bronze: Earned 10,000 credits (30,791)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (33,221)PPS LLR Turquoise: Earned 5,000,000 credits (5,008,095)PSP LLR Bronze: Earned 10,000 credits (36,061)SoB LLR Jade: Earned 10,000,000 credits (10,194,347)SR5 LLR Amethyst: Earned 1,000,000 credits (1,783,647)SGS LLR Gold: Earned 500,000 credits (609,081)TRP LLR Bronze: Earned 10,000 credits (71,189)Woodall LLR Gold: Earned 500,000 credits (524,564)321 Sieve Amethyst: Earned 1,000,000 credits (1,444,818)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (28,919,526)PPS Sieve Double Silver: Earned 200,000,000 credits (241,542,263)TRP Sieve (suspended) Bronze: Earned 10,000 credits (39,046)AP 26/27 Emerald: Earned 50,000,000 credits (79,501,552)GFN Double Bronze: Earned 100,000,000 credits (101,317,677)PSA Double Gold: Earned 500,000,000 credits (836,351,425)
Message 125391 - Posted: 25 Jan 2019 | 11:57:47 UTC
Last modified: 25 Jan 2019 | 12:16:06 UTC

Penguin wrote:
Now if credit if what you are after, the 2080 tears PPS Sieve up pretty nicely. Ran it for about 12 hrs and averaged 224 seconds to do 2 simultaneous tasks. That's 1min 52 sec per task. Each task yields 3,371 credits. So that's equal to ~1,805 credits per minute. That's 108,300 credits per hour.

If credit's your game, then the best choice for RTX cards seems to be manual Genefer sieving. I don't know what it is about them, but Turing absolutely destroys there. It's a huge jump forward compared to Pascal; even a 2070 is at least twice as fast as a 1080 Ti. My 2080 yields over 3.5 million per day on GFN21.
____________
Long live the sievers.

Profile toms83Project donor
Avatar
Send message
Joined: 17 Dec 09
Posts: 238
ID: 51975
Credit: 433,796,019
RAC: 14
321 LLR Amethyst: Earned 1,000,000 credits (1,057,615)Cullen LLR Gold: Earned 500,000 credits (571,506)ESP LLR Silver: Earned 100,000 credits (185,054)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (460,220)PPS LLR Amethyst: Earned 1,000,000 credits (1,154,429)PSP LLR Ruby: Earned 2,000,000 credits (2,190,174)SoB LLR Ruby: Earned 2,000,000 credits (2,201,813)SR5 LLR Silver: Earned 100,000 credits (292,115)SGS LLR Gold: Earned 500,000 credits (747,595)TRP LLR Gold: Earned 500,000 credits (675,047)Woodall LLR Amethyst: Earned 1,000,000 credits (1,210,464)321 Sieve Amethyst: Earned 1,000,000 credits (1,016,453)Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (25,001,013)Generalized Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (16,858,065)PPS Sieve Emerald: Earned 50,000,000 credits (65,684,329)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Sapphire: Earned 20,000,000 credits (21,004,347)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,080,762)AP 26/27 Turquoise: Earned 5,000,000 credits (5,177,651)GFN Jade: Earned 10,000,000 credits (10,325,889)PSA Double Silver: Earned 200,000,000 credits (267,901,478)
Message 125394 - Posted: 25 Jan 2019 | 12:39:43 UTC - in response to Message 125391.

How many threads you need to assign to fully utilize GTX 2080 in GFN21?

Profile AzmodesProject donor
Avatar
Send message
Joined: 30 Dec 16
Posts: 160
ID: 479275
Credit: 1,307,839,614
RAC: 391,010
Discovered 1 mega primeDiscovered 1 AP26Found 2 primes in the 2018 Tour de PrimesFound 2 primes in the 2019 Tour de PrimesFound 1 mega prime in the 2019 Tour de Primes321 LLR Silver: Earned 100,000 credits (402,418)Cullen LLR Bronze: Earned 10,000 credits (29,920)ESP LLR Bronze: Earned 10,000 credits (30,791)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (33,221)PPS LLR Turquoise: Earned 5,000,000 credits (5,008,095)PSP LLR Bronze: Earned 10,000 credits (36,061)SoB LLR Jade: Earned 10,000,000 credits (10,194,347)SR5 LLR Amethyst: Earned 1,000,000 credits (1,783,647)SGS LLR Gold: Earned 500,000 credits (609,081)TRP LLR Bronze: Earned 10,000 credits (71,189)Woodall LLR Gold: Earned 500,000 credits (524,564)321 Sieve Amethyst: Earned 1,000,000 credits (1,444,818)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (28,919,526)PPS Sieve Double Silver: Earned 200,000,000 credits (241,542,263)TRP Sieve (suspended) Bronze: Earned 10,000 credits (39,046)AP 26/27 Emerald: Earned 50,000,000 credits (79,501,552)GFN Double Bronze: Earned 100,000,000 credits (101,317,677)PSA Double Gold: Earned 500,000,000 credits (836,351,425)
Message 125418 - Posted: 25 Jan 2019 | 23:07:00 UTC
Last modified: 25 Jan 2019 | 23:07:46 UTC

I run two instances in tandem to keep utilization at 100% (each at around 420 P/day, the benefit compared to one instance is 20-30 P/day), each with the w1 parameter and size B13. Together they use about a single thread, according to the task manager. So I guess one per instance is more than enough in this case. I got 26 of my 32 threads occupied with other BOINC tasks, the rest is kept free.
____________
Long live the sievers.

Profile toms83Project donor
Avatar
Send message
Joined: 17 Dec 09
Posts: 238
ID: 51975
Credit: 433,796,019
RAC: 14
321 LLR Amethyst: Earned 1,000,000 credits (1,057,615)Cullen LLR Gold: Earned 500,000 credits (571,506)ESP LLR Silver: Earned 100,000 credits (185,054)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (460,220)PPS LLR Amethyst: Earned 1,000,000 credits (1,154,429)PSP LLR Ruby: Earned 2,000,000 credits (2,190,174)SoB LLR Ruby: Earned 2,000,000 credits (2,201,813)SR5 LLR Silver: Earned 100,000 credits (292,115)SGS LLR Gold: Earned 500,000 credits (747,595)TRP LLR Gold: Earned 500,000 credits (675,047)Woodall LLR Amethyst: Earned 1,000,000 credits (1,210,464)321 Sieve Amethyst: Earned 1,000,000 credits (1,016,453)Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (25,001,013)Generalized Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (16,858,065)PPS Sieve Emerald: Earned 50,000,000 credits (65,684,329)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Sapphire: Earned 20,000,000 credits (21,004,347)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,080,762)AP 26/27 Turquoise: Earned 5,000,000 credits (5,177,651)GFN Jade: Earned 10,000,000 credits (10,325,889)PSA Double Silver: Earned 200,000,000 credits (267,901,478)
Message 125444 - Posted: 26 Jan 2019 | 12:15:27 UTC - in response to Message 125418.

Thanks. It's looks great.

Profile PenguinProject donor
Avatar
Send message
Joined: 14 Sep 12
Posts: 435
ID: 172547
Credit: 730,134,098
RAC: 1,639,850
Found 1 prime in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,295,766)Cullen LLR Amethyst: Earned 1,000,000 credits (1,080,659)ESP LLR Turquoise: Earned 5,000,000 credits (7,353,526)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,139,193)PPS LLR Turquoise: Earned 5,000,000 credits (9,438,004)PSP LLR Ruby: Earned 2,000,000 credits (3,331,034)SoB LLR Amethyst: Earned 1,000,000 credits (1,301,215)SR5 LLR Turquoise: Earned 5,000,000 credits (5,005,004)SGS LLR Ruby: Earned 2,000,000 credits (4,528,311)TRP LLR Ruby: Earned 2,000,000 credits (2,032,589)Woodall LLR Ruby: Earned 2,000,000 credits (2,016,420)321 Sieve Ruby: Earned 2,000,000 credits (4,943,118)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,018,833)PPS Sieve Emerald: Earned 50,000,000 credits (68,849,304)TRP Sieve (suspended) Silver: Earned 100,000 credits (110,630)AP 26/27 Emerald: Earned 50,000,000 credits (55,474,003)GFN Emerald: Earned 50,000,000 credits (87,435,099)PSA Double Silver: Earned 200,000,000 credits (467,771,676)
Message 125462 - Posted: 26 Jan 2019 | 19:24:08 UTC - in response to Message 125391.

Penguin wrote:
Now if credit if what you are after, the 2080 tears PPS Sieve up pretty nicely. Ran it for about 12 hrs and averaged 224 seconds to do 2 simultaneous tasks. That's 1min 52 sec per task. Each task yields 3,371 credits. So that's equal to ~1,805 credits per minute. That's 108,300 credits per hour.

If credit's your game, then the best choice for RTX cards seems to be manual Genefer sieving. I don't know what it is about them, but Turing absolutely destroys there. It's a huge jump forward compared to Pascal; even a 2070 is at least twice as fast as a 1080 Ti. My 2080 yields over 3.5 million per day on GFN21.


Agreed. I've been doing 1,000P every day and a half or less.

Profile PenguinProject donor
Avatar
Send message
Joined: 14 Sep 12
Posts: 435
ID: 172547
Credit: 730,134,098
RAC: 1,639,850
Found 1 prime in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,295,766)Cullen LLR Amethyst: Earned 1,000,000 credits (1,080,659)ESP LLR Turquoise: Earned 5,000,000 credits (7,353,526)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,139,193)PPS LLR Turquoise: Earned 5,000,000 credits (9,438,004)PSP LLR Ruby: Earned 2,000,000 credits (3,331,034)SoB LLR Amethyst: Earned 1,000,000 credits (1,301,215)SR5 LLR Turquoise: Earned 5,000,000 credits (5,005,004)SGS LLR Ruby: Earned 2,000,000 credits (4,528,311)TRP LLR Ruby: Earned 2,000,000 credits (2,032,589)Woodall LLR Ruby: Earned 2,000,000 credits (2,016,420)321 Sieve Ruby: Earned 2,000,000 credits (4,943,118)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,018,833)PPS Sieve Emerald: Earned 50,000,000 credits (68,849,304)TRP Sieve (suspended) Silver: Earned 100,000 credits (110,630)AP 26/27 Emerald: Earned 50,000,000 credits (55,474,003)GFN Emerald: Earned 50,000,000 credits (87,435,099)PSA Double Silver: Earned 200,000,000 credits (467,771,676)
Message 125463 - Posted: 26 Jan 2019 | 19:27:44 UTC - in response to Message 125418.

I run two instances in tandem to keep utilization at 100% (each at around 420 P/day, the benefit compared to one instance is 20-30 P/day), each with the w1 parameter and size B13. Together they use about a single thread, according to the task manager. So I guess one per instance is more than enough in this case. I got 26 of my 32 threads occupied with other BOINC tasks, the rest is kept free.


same here. 2 threads are needed for an 8350 cpu to utilize it fully. About 7-8% per core for each instance.



Not sure if PPS sieve would benefit from a faster CPU. 2 tasks is a must though for PPS sieve max throughput. It only uses 98-99% of the GPU still.

Profile PenguinProject donor
Avatar
Send message
Joined: 14 Sep 12
Posts: 435
ID: 172547
Credit: 730,134,098
RAC: 1,639,850
Found 1 prime in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,295,766)Cullen LLR Amethyst: Earned 1,000,000 credits (1,080,659)ESP LLR Turquoise: Earned 5,000,000 credits (7,353,526)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,139,193)PPS LLR Turquoise: Earned 5,000,000 credits (9,438,004)PSP LLR Ruby: Earned 2,000,000 credits (3,331,034)SoB LLR Amethyst: Earned 1,000,000 credits (1,301,215)SR5 LLR Turquoise: Earned 5,000,000 credits (5,005,004)SGS LLR Ruby: Earned 2,000,000 credits (4,528,311)TRP LLR Ruby: Earned 2,000,000 credits (2,032,589)Woodall LLR Ruby: Earned 2,000,000 credits (2,016,420)321 Sieve Ruby: Earned 2,000,000 credits (4,943,118)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,018,833)PPS Sieve Emerald: Earned 50,000,000 credits (68,849,304)TRP Sieve (suspended) Silver: Earned 100,000 credits (110,630)AP 26/27 Emerald: Earned 50,000,000 credits (55,474,003)GFN Emerald: Earned 50,000,000 credits (87,435,099)PSA Double Silver: Earned 200,000,000 credits (467,771,676)
Message 125470 - Posted: 26 Jan 2019 | 23:48:44 UTC
Last modified: 26 Jan 2019 | 23:49:35 UTC

I was unable to get PPS Sieve running on both my GPUs at the same time. I could get two tasks running using .5 GPUs to run on device 0 which is the 2080 but I couldn't get it to use device 1 no matter what. That's the 1070. It will run two unique projects fine like seti on the 1070 and PPS Sieve with two tasks on the 2080 but disabling all other projects freeing up device 1 it still will not run it side by side with device 0.

I've had other Primegrid sub projects running on both cards like GFN21 for the challenge. I just can't finagle it to work with PPS Sieve. I didn't try just sieving with the 1070 but I will try now just for the heck of it for comparison speed. Thought I could throw both of em at it for a few days and get that next badge.

Profile PenguinProject donor
Avatar
Send message
Joined: 14 Sep 12
Posts: 435
ID: 172547
Credit: 730,134,098
RAC: 1,639,850
Found 1 prime in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,295,766)Cullen LLR Amethyst: Earned 1,000,000 credits (1,080,659)ESP LLR Turquoise: Earned 5,000,000 credits (7,353,526)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,139,193)PPS LLR Turquoise: Earned 5,000,000 credits (9,438,004)PSP LLR Ruby: Earned 2,000,000 credits (3,331,034)SoB LLR Amethyst: Earned 1,000,000 credits (1,301,215)SR5 LLR Turquoise: Earned 5,000,000 credits (5,005,004)SGS LLR Ruby: Earned 2,000,000 credits (4,528,311)TRP LLR Ruby: Earned 2,000,000 credits (2,032,589)Woodall LLR Ruby: Earned 2,000,000 credits (2,016,420)321 Sieve Ruby: Earned 2,000,000 credits (4,943,118)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,018,833)PPS Sieve Emerald: Earned 50,000,000 credits (68,849,304)TRP Sieve (suspended) Silver: Earned 100,000 credits (110,630)AP 26/27 Emerald: Earned 50,000,000 credits (55,474,003)GFN Emerald: Earned 50,000,000 credits (87,435,099)PSA Double Silver: Earned 200,000,000 credits (467,771,676)
Message 125471 - Posted: 27 Jan 2019 | 0:05:33 UTC - in response to Message 125470.

I was unable to get PPS Sieve running on both my GPUs at the same time. I could get two tasks running using .5 GPUs to run on device 0 which is the 2080 but I couldn't get it to use device 1 no matter what. That's the 1070. It will run two unique projects fine like seti on the 1070 and PPS Sieve with two tasks on the 2080 but disabling all other projects freeing up device 1 it still will not run it side by side with device 0.

I've had other Primegrid sub projects running on both cards like GFN21 for the challenge. I just can't finagle it to work with PPS Sieve. I didn't try just sieving with the 1070 but I will try now just for the heck of it for comparison speed. Thought I could throw both of em at it for a few days and get that next badge.


Well the magic of the 'ol bring the squeaking car to the shop and it stops making the noise thing has occured :) It's working with 2 tasks on each card now. Crazy. Dunno what or why or how but it's doing what I tried to do a hundred times the other day. So yay :) Prime hunting will continue Feb 1st :) Id id have to set it to get work for 0.0 days not 0.1 or it fills the queue even with resource share 0...but that's still ok with sieves as time is not a requirement.

Profile PenguinProject donor
Avatar
Send message
Joined: 14 Sep 12
Posts: 435
ID: 172547
Credit: 730,134,098
RAC: 1,639,850
Found 1 prime in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,295,766)Cullen LLR Amethyst: Earned 1,000,000 credits (1,080,659)ESP LLR Turquoise: Earned 5,000,000 credits (7,353,526)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,139,193)PPS LLR Turquoise: Earned 5,000,000 credits (9,438,004)PSP LLR Ruby: Earned 2,000,000 credits (3,331,034)SoB LLR Amethyst: Earned 1,000,000 credits (1,301,215)SR5 LLR Turquoise: Earned 5,000,000 credits (5,005,004)SGS LLR Ruby: Earned 2,000,000 credits (4,528,311)TRP LLR Ruby: Earned 2,000,000 credits (2,032,589)Woodall LLR Ruby: Earned 2,000,000 credits (2,016,420)321 Sieve Ruby: Earned 2,000,000 credits (4,943,118)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,018,833)PPS Sieve Emerald: Earned 50,000,000 credits (68,849,304)TRP Sieve (suspended) Silver: Earned 100,000 credits (110,630)AP 26/27 Emerald: Earned 50,000,000 credits (55,474,003)GFN Emerald: Earned 50,000,000 credits (87,435,099)PSA Double Silver: Earned 200,000,000 credits (467,771,676)
Message 125499 - Posted: 27 Jan 2019 | 18:46:46 UTC

Managed to shave off 10 sec for 2 tasks down from 224 sec to 214 sec now. So 1 min 47 sec per task on average.

Azmodes suggested lowering the memory clock and upping the GPU clock which works better for sieving. It helped. Memory clock is running at 2040 now stable with 6800 memory stock speed. Temps are lower.

Opening my outdated poor cooling case helped also. 2 GPUs on top of one another needs some good ventilation. So like many have done I simply took off the side of the case and put a fan blowing directly into it on the cards :) 5-6c temp difference from that alone. New case for the new build will be much better with airflow.

Profile toms83Project donor
Avatar
Send message
Joined: 17 Dec 09
Posts: 238
ID: 51975
Credit: 433,796,019
RAC: 14
321 LLR Amethyst: Earned 1,000,000 credits (1,057,615)Cullen LLR Gold: Earned 500,000 credits (571,506)ESP LLR Silver: Earned 100,000 credits (185,054)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (460,220)PPS LLR Amethyst: Earned 1,000,000 credits (1,154,429)PSP LLR Ruby: Earned 2,000,000 credits (2,190,174)SoB LLR Ruby: Earned 2,000,000 credits (2,201,813)SR5 LLR Silver: Earned 100,000 credits (292,115)SGS LLR Gold: Earned 500,000 credits (747,595)TRP LLR Gold: Earned 500,000 credits (675,047)Woodall LLR Amethyst: Earned 1,000,000 credits (1,210,464)321 Sieve Amethyst: Earned 1,000,000 credits (1,016,453)Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (25,001,013)Generalized Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (16,858,065)PPS Sieve Emerald: Earned 50,000,000 credits (65,684,329)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Sapphire: Earned 20,000,000 credits (21,004,347)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,080,762)AP 26/27 Turquoise: Earned 5,000,000 credits (5,177,651)GFN Jade: Earned 10,000,000 credits (10,325,889)PSA Double Silver: Earned 200,000,000 credits (267,901,478)
Message 125582 - Posted: 29 Jan 2019 | 19:35:29 UTC - in response to Message 125369.
Last modified: 29 Jan 2019 | 19:39:27 UTC

Also, I think the RTX cards are bottlenecked a good bit on PPS Sieve. For example, my RTX 2070 had average times of 229 seconds (almost the same as your 2080). I would guess that running 2 PPS Sieves at a time on these cards will yield noticeable credit yields.

Is this a time for 1 wu at a time or 2 wu's?

And if for 1, did you try 2 simultaneous tasks?

Profile PenguinProject donor
Avatar
Send message
Joined: 14 Sep 12
Posts: 435
ID: 172547
Credit: 730,134,098
RAC: 1,639,850
Found 1 prime in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,295,766)Cullen LLR Amethyst: Earned 1,000,000 credits (1,080,659)ESP LLR Turquoise: Earned 5,000,000 credits (7,353,526)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,139,193)PPS LLR Turquoise: Earned 5,000,000 credits (9,438,004)PSP LLR Ruby: Earned 2,000,000 credits (3,331,034)SoB LLR Amethyst: Earned 1,000,000 credits (1,301,215)SR5 LLR Turquoise: Earned 5,000,000 credits (5,005,004)SGS LLR Ruby: Earned 2,000,000 credits (4,528,311)TRP LLR Ruby: Earned 2,000,000 credits (2,032,589)Woodall LLR Ruby: Earned 2,000,000 credits (2,016,420)321 Sieve Ruby: Earned 2,000,000 credits (4,943,118)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,018,833)PPS Sieve Emerald: Earned 50,000,000 credits (68,849,304)TRP Sieve (suspended) Silver: Earned 100,000 credits (110,630)AP 26/27 Emerald: Earned 50,000,000 credits (55,474,003)GFN Emerald: Earned 50,000,000 credits (87,435,099)PSA Double Silver: Earned 200,000,000 credits (467,771,676)
Message 125817 - Posted: 31 Jan 2019 | 22:44:22 UTC - in response to Message 125582.

Also, I think the RTX cards are bottlenecked a good bit on PPS Sieve. For example, my RTX 2070 had average times of 229 seconds (almost the same as your 2080). I would guess that running 2 PPS Sieves at a time on these cards will yield noticeable credit yields.

Is this a time for 1 wu at a time or 2 wu's?

And if for 1, did you try 2 simultaneous tasks?


I can't speak for Scott but I think that was one task.

Scott BrownProject donor
Volunteer moderator
Project administrator
Volunteer tester
Project scientist
Avatar
Send message
Joined: 17 Oct 05
Posts: 1923
ID: 1178
Credit: 6,435,450,186
RAC: 2,878,740
Discovered the World's First base 116 Generalized Cullen prime!!!Discovered 16 mega primesEliminated 7 conjecture "k"sDiscovered 1 Sophie Germain pairDiscovered 1 Fermat divisor2012 Tour de Primes highest prime count2012 Tour de Primes most Mountain Stage primes2015 Tour de Primes highest prime count2016 Tour de Primes highest prime countFound 23 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de PrimesFound 2 primes in the 2018 Tour de Primes Mountain Stage2019 Tour de Primes highest prime countFound 22 primes in the 2019 Tour de Primes321 LLR Double Bronze: Earned 100,000,000 credits (100,829,118)Cullen LLR Double Bronze: Earned 100,000,000 credits (103,870,990)ESP LLR Double Bronze: Earned 100,000,000 credits (137,499,413)Generalized Cullen/Woodall LLR Double Bronze: Earned 100,000,000 credits (108,461,080)PPS LLR Double Silver: Earned 200,000,000 credits (382,471,045)PSP LLR Double Bronze: Earned 100,000,000 credits (108,003,110)SoB LLR Double Bronze: Earned 100,000,000 credits (135,747,083)SR5 LLR Double Silver: Earned 200,000,000 credits (201,224,339)SGS LLR Double Bronze: Earned 100,000,000 credits (161,044,052)TPS LLR (retired) Silver: Earned 100,000 credits (235,439)TRP LLR Double Bronze: Earned 100,000,000 credits (121,443,822)Woodall LLR Double Bronze: Earned 100,000,000 credits (101,447,725)321 Sieve Double Silver: Earned 200,000,000 credits (203,510,966)Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (83,794,448)Generalized Cullen/Woodall Sieve (suspended) Double Silver: Earned 200,000,000 credits (285,139,652)PPS Sieve Double Ruby: Earned 2,000,000,000 credits (2,108,274,845)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Double Silver: Earned 200,000,000 credits (203,523,358)TRP Sieve (suspended) Double Silver: Earned 200,000,000 credits (201,489,157)AP 26/27 Double Bronze: Earned 100,000,000 credits (135,790,733)GFN Double Amethyst: Earned 1,000,000,000 credits (1,292,663,451)PSA Double Silver: Earned 200,000,000 credits (259,058,048)
Message 125820 - Posted: 31 Jan 2019 | 23:23:53 UTC - in response to Message 125817.

Also, I think the RTX cards are bottlenecked a good bit on PPS Sieve. For example, my RTX 2070 had average times of 229 seconds (almost the same as your 2080). I would guess that running 2 PPS Sieves at a time on these cards will yield noticeable credit yields.

Is this a time for 1 wu at a time or 2 wu's?

And if for 1, did you try 2 simultaneous tasks?


I can't speak for Scott but I think that was one task.




One task.

Post to thread

Message boards : Proth Prime Search : PPS Sieve on a 2080

[Return to PrimeGrid main page]
DNS Powered by DNSEXIT.COM
Copyright © 2005 - 2019 Rytis Slatkevičius (contact) and PrimeGrid community. Server load 1.95, 1.97, 1.88
Generated 19 Oct 2019 | 6:03:00 UTC