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Message boards : The Riesel Problem : difference in credit granted

Author Message
pabliedungProject donor
Volunteer tester
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Joined: 2 Jan 11
Posts: 87
ID: 79535
Credit: 222,875,204
RAC: 16,984
Eliminated 1 conjecture "k"Discovered 1 Sophie Germain pair321 LLR Turquoise: Earned 5,000,000 credits (5,084,460)Cullen LLR Turquoise: Earned 5,000,000 credits (5,116,758)ESP LLR Turquoise: Earned 5,000,000 credits (5,857,992)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,160,553)PPS LLR Turquoise: Earned 5,000,000 credits (7,501,419)PSP LLR Turquoise: Earned 5,000,000 credits (5,102,730)SoB LLR Turquoise: Earned 5,000,000 credits (6,758,211)SR5 LLR Turquoise: Earned 5,000,000 credits (8,949,180)SGS LLR Turquoise: Earned 5,000,000 credits (5,063,747)TRP LLR Turquoise: Earned 5,000,000 credits (6,284,268)Woodall LLR Turquoise: Earned 5,000,000 credits (5,224,737)321 Sieve Turquoise: Earned 5,000,000 credits (5,107,390)Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (10,903,006)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,059,213)PPS Sieve Emerald: Earned 50,000,000 credits (50,293,728)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,054,382)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,057,704)AP 26/27 Turquoise: Earned 5,000,000 credits (5,061,836)GFN Sapphire: Earned 20,000,000 credits (20,202,915)PSA Emerald: Earned 50,000,000 credits (50,030,975)
Message 54012 - Posted: 6 May 2012 | 17:13:00 UTC

I have two machines each with a quad core i7 (no HT enabled) that get very different credits granted for the TRP LLR wu's:

iMac i7 - OSX 10.6
http://www.primegrid.com/workunit.php?wuid=274073519
CPU time: 49,910 seconds
Credit: 468.03

Ubuntu Linux i7
http://www.primegrid.com/workunit.php?wuid=274073509
CPU time: 47,254 seconds
Credit: 1,300

What is driving the difference in credit awarded for very similar wu's on seamingly identical CPU's?


____________

Profile j.sheridanProject donor
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Joined: 21 Mar 11
Posts: 513
ID: 91622
Credit: 858,058,601
RAC: 3,281,316
321 LLR Ruby: Earned 2,000,000 credits (3,647,519)Cullen LLR Ruby: Earned 2,000,000 credits (3,248,133)ESP LLR Ruby: Earned 2,000,000 credits (2,562,901)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,324,648)PPS LLR Ruby: Earned 2,000,000 credits (4,467,976)PSP LLR Turquoise: Earned 5,000,000 credits (5,500,951)SoB LLR Turquoise: Earned 5,000,000 credits (7,673,328)SR5 LLR Ruby: Earned 2,000,000 credits (2,152,357)SGS LLR Ruby: Earned 2,000,000 credits (4,169,585)TRP LLR Turquoise: Earned 5,000,000 credits (9,672,058)Woodall LLR Ruby: Earned 2,000,000 credits (3,163,178)321 Sieve Ruby: Earned 2,000,000 credits (2,565,699)Cullen/Woodall Sieve (suspended) Double Silver: Earned 200,000,000 credits (265,102,350)PPS Sieve Double Silver: Earned 200,000,000 credits (369,232,053)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,801,812)AP 26/27 Sapphire: Earned 20,000,000 credits (29,372,395)GFN Double Bronze: Earned 100,000,000 credits (137,509,363)
Message 54023 - Posted: 6 May 2012 | 19:54:01 UTC - in response to Message 54012.

boinc thinks 1 pc is approx 3x faster than the other so is awarding approx 3x the credits

Linux 2.6.38-12-generic: Measured integer speed 16788.66 million ops/sec
Darwin11.3.0: Measured integer speed 5193.7 million ops/sec

Message boards : The Riesel Problem : difference in credit granted

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