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Message boards : Prime Sierpinski Problem : PSP Sieve performance question

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Charles DeHaven
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Joined: 9 Apr 15
Posts: 1
ID: 392949
Credit: 8,988,429
RAC: 0
Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (8,988,429)
Message 84822 - Posted: 13 Apr 2015 | 20:22:05 UTC

Hello I am new to the PSP problem, anything I should look for in BOINC to make it run as fast as possible?
____________

HonzaProject donor
Volunteer moderator
Volunteer tester
Project scientist
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Joined: 15 Aug 05
Posts: 1825
ID: 352
Credit: 2,530,552,912
RAC: 1,118,932
Discovered 5 mega primesEliminated 3 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 Stage321 LLR Emerald: Earned 50,000,000 credits (50,556,284)Cullen LLR Emerald: Earned 50,000,000 credits (50,296,190)ESP LLR Sapphire: Earned 20,000,000 credits (48,113,533)Generalized Cullen/Woodall LLR Emerald: Earned 50,000,000 credits (50,309,119)PPS LLR Emerald: Earned 50,000,000 credits (86,138,861)PSP LLR Sapphire: Earned 20,000,000 credits (23,462,639)SoB LLR Emerald: Earned 50,000,000 credits (67,865,553)SR5 LLR Emerald: Earned 50,000,000 credits (50,320,316)SGS LLR Sapphire: Earned 20,000,000 credits (22,598,870)TPS LLR (retired) Bronze: Earned 10,000 credits (43,033)TRP LLR Emerald: Earned 50,000,000 credits (57,441,313)Woodall LLR Sapphire: Earned 20,000,000 credits (43,383,605)321 Sieve Sapphire: Earned 20,000,000 credits (28,170,142)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,142,109)Generalized Cullen/Woodall Sieve Emerald: Earned 50,000,000 credits (50,504,945)PPS Sieve Double Gold: Earned 500,000,000 credits (504,377,255)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 (202,968,293)GFN Double Gold: Earned 500,000,000 credits (618,192,124)PSA Double Gold: Earned 500,000,000 credits (531,254,992)
Message 84825 - Posted: 13 Apr 2015 | 20:56:07 UTC

Welcome.

Basically, all LLR apps are CPU intensive.
You can try to turn off hyperthreading and/or leave one CPU core idle, it may help to get more work done in shorter time.

Aplications itself are highly optimized and get most of CPUs, including latest instruction sets if OS supports them, which in your case Win7 x64 does.

____________
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Badge score: 1*1 + 5*1 + 7*1 + 8*8 + 9*7 + 11*1 + 12*3 = 187

Profile Pooh Bear 27Project donor
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Joined: 10 May 09
Posts: 674
ID: 39821
Credit: 397,968,980
RAC: 6,144
Discovered 1 mega primeEliminated 1 conjecture "k"Discovered 1 twin prime321 LLR Turquoise: Earned 5,000,000 credits (5,014,405)Cullen LLR Turquoise: Earned 5,000,000 credits (5,734,854)ESP LLR Turquoise: Earned 5,000,000 credits (5,421,149)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,576,209)PPS LLR Turquoise: Earned 5,000,000 credits (9,825,243)PSP LLR Turquoise: Earned 5,000,000 credits (9,352,326)SoB LLR Turquoise: Earned 5,000,000 credits (8,986,628)SR5 LLR Turquoise: Earned 5,000,000 credits (5,248,659)SGS LLR Turquoise: Earned 5,000,000 credits (6,878,856)TRP LLR Turquoise: Earned 5,000,000 credits (5,416,106)Woodall LLR Turquoise: Earned 5,000,000 credits (6,400,237)321 Sieve Amethyst: Earned 1,000,000 credits (1,000,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,000,977)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (6,843,367)PPS Sieve Emerald: Earned 50,000,000 credits (78,673,438)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,473,750)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (8,243,608)AP 26/27 Jade: Earned 10,000,000 credits (11,734,912)GFN Double Silver: Earned 200,000,000 credits (202,101,609)PSA Turquoise: Earned 5,000,000 credits (5,042,125)
Message 84827 - Posted: 13 Apr 2015 | 21:29:44 UTC - in response to Message 84822.

Faster memory is huge. The newer Intel processors with FMA/AVX will also help a lot. Other than that the other person is very right about either turning off Hyperthreading or setting to use 50% of the processors. The memory contention for these larger numbers and the intense CPU use will slow them down.

Profile Gary Craig
Volunteer tester
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Joined: 30 Dec 09
Posts: 3150
ID: 52890
Credit: 882,110,546
RAC: 495,802
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 (5,738,876)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (6,292,626)PPS LLR Turquoise: Earned 5,000,000 credits (6,696,613)PSP LLR Turquoise: Earned 5,000,000 credits (5,000,433)SoB LLR Turquoise: Earned 5,000,000 credits (7,342,502)SR5 LLR Turquoise: Earned 5,000,000 credits (5,040,727)SGS LLR Ruby: Earned 2,000,000 credits (3,333,837)TRP LLR Jade: Earned 10,000,000 credits (12,510,311)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 Gold: Earned 500,000,000 credits (500,867,936)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 (20,243,897)GFN Double Bronze: Earned 100,000,000 credits (156,988,349)PSA Emerald: Earned 50,000,000 credits (62,378,755)
Message 84829 - Posted: 13 Apr 2015 | 23:05:54 UTC
Last modified: 13 Apr 2015 | 23:07:48 UTC

Welcome Charles!

You're running the PSP *Sieve* subproject; I believe the common wisdom is to leave hyperthreading turned *on* (in BIOS) for the sieve subprojects (basically, anything with "sieve" in its name). All other subprojects do better with hyperthreading being turned off, as previously suggested. Yes, it is a fuss if you switch around a lot.

--Gary

Profile Gary Craig
Volunteer tester
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Joined: 30 Dec 09
Posts: 3150
ID: 52890
Credit: 882,110,546
RAC: 495,802
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 (5,738,876)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (6,292,626)PPS LLR Turquoise: Earned 5,000,000 credits (6,696,613)PSP LLR Turquoise: Earned 5,000,000 credits (5,000,433)SoB LLR Turquoise: Earned 5,000,000 credits (7,342,502)SR5 LLR Turquoise: Earned 5,000,000 credits (5,040,727)SGS LLR Ruby: Earned 2,000,000 credits (3,333,837)TRP LLR Jade: Earned 10,000,000 credits (12,510,311)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 Gold: Earned 500,000,000 credits (500,867,936)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 (20,243,897)GFN Double Bronze: Earned 100,000,000 credits (156,988,349)PSA Emerald: Earned 50,000,000 credits (62,378,755)
Message 84830 - Posted: 13 Apr 2015 | 23:29:40 UTC

(posts here have been moved from the "About" thread)

Message boards : Prime Sierpinski Problem : PSP Sieve performance question

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