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Message boards : Prime Sierpinski Problem : Patience, Patience

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TroubledBunnyProject donor
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Joined: 4 Jun 07
Posts: 605
ID: 8931
Credit: 385,015,100
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Discovered 1 mega prime321 LLR Gold: Earned 500,000 credits (622,449)Cullen LLR Amethyst: Earned 1,000,000 credits (1,019,085)ESP LLR Amethyst: Earned 1,000,000 credits (1,006,207)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (769,754)PPS LLR Ruby: Earned 2,000,000 credits (3,839,000)PSP LLR Amethyst: Earned 1,000,000 credits (1,147,411)SoB LLR Gold: Earned 500,000 credits (521,611)SR5 LLR Amethyst: Earned 1,000,000 credits (1,036,817)SGS LLR Amethyst: Earned 1,000,000 credits (1,069,052)TRP LLR Amethyst: Earned 1,000,000 credits (1,004,422)Woodall LLR Gold: Earned 500,000 credits (531,350)321 Sieve Silver: Earned 100,000 credits (223,275)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,655,968)Generalized Cullen/Woodall Sieve Amethyst: Earned 1,000,000 credits (1,006,509)PPS Sieve Double Silver: Earned 200,000,000 credits (343,952,410)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,014,690)TRP Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,141,121)AP 26/27 Amethyst: Earned 1,000,000 credits (1,422,266)GFN Ruby: Earned 2,000,000 credits (4,753,065)PSA Jade: Earned 10,000,000 credits (16,276,495)
Message 63847 - Posted: 25 Mar 2013 | 8:40:16 UTC

I've just started on PSP WUs again and the first one I returned has a new wingman, and I'm guessing it will take the Intel(R) Atom(TM) CPU N270 @ 1.60GHz a little while to complete it :)

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 (4,268,474)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,145,754)PPS LLR Ruby: Earned 2,000,000 credits (2,773,744)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (34,158,496)SR5 LLR Turquoise: Earned 5,000,000 credits (8,293,415)SGS LLR Ruby: Earned 2,000,000 credits (2,012,222)TRP LLR Ruby: Earned 2,000,000 credits (2,737,347)Woodall LLR Ruby: Earned 2,000,000 credits (2,195,123)321 Sieve Turquoise: Earned 5,000,000 credits (5,046,112)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 (7,090,096)GFN Emerald: Earned 50,000,000 credits (64,594,991)PSA Jade: Earned 10,000,000 credits (10,597,947)
Message 63855 - Posted: 25 Mar 2013 | 14:30:39 UTC - in response to Message 63847.

I've just started on PSP WUs again and the first one I returned has a new wingman, and I'm guessing it will take the Intel(R) Atom(TM) CPU N270 @ 1.60GHz a little while to complete it :)


I once ran a PPS LLR on an Atom-powered netbook just to see how long it would take. It took quite a while. My guess is that the Atom's architecture is particularly slow at floating point calculations and it will take much longer than the 1.6 GHz clock speed might suggest.

Searching through the database, I found a few tasks completed by an N570.

SGS takes about 50K seconds.

PPS-LLR takes about 25K or 70K seconds, depending on whether the number being tested is PPS or PPSE.

That's roughly 5 times slower than my 32-bit AMD Sempron 3000+, and about 20 times slower than my Core2Quad Q6600. Based on that, it will probably take an N570 about 2500 hours to complete the PSP task. So, if it's left on and crunching 24/7, it will be done in July.
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gazzyk1ns
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Joined: 2 Aug 11
Posts: 1308
ID: 107047
Credit: 335,992,259
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321 LLR Amethyst: Earned 1,000,000 credits (1,446,317)Cullen LLR Amethyst: Earned 1,000,000 credits (1,206,959)ESP LLR Ruby: Earned 2,000,000 credits (2,039,070)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,159,526)PPS LLR Amethyst: Earned 1,000,000 credits (1,298,005)PSP LLR Turquoise: Earned 5,000,000 credits (9,022,835)SoB LLR Sapphire: Earned 20,000,000 credits (22,944,219)SR5 LLR Ruby: Earned 2,000,000 credits (2,014,726)SGS LLR Amethyst: Earned 1,000,000 credits (1,085,939)TRP LLR Turquoise: Earned 5,000,000 credits (5,630,136)Woodall LLR Ruby: Earned 2,000,000 credits (2,035,102)321 Sieve Ruby: Earned 2,000,000 credits (2,144,966)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,190,376)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,651,496)PPS Sieve Double Silver: Earned 200,000,000 credits (207,370,215)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (3,591,642)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,819,072)AP 26/27 Ruby: Earned 2,000,000 credits (2,150,876)GFN Sapphire: Earned 20,000,000 credits (22,745,636)PSA Sapphire: Earned 20,000,000 credits (38,445,145)
Message 63861 - Posted: 25 Mar 2013 | 16:25:44 UTC

Yeah, that Atom N270 is about half as fast as a Pentium M according to at least a couple of sources, and the Pentium M is based on the Pentium 3.

At least it wasn't based on the P4 ;)

HellGauss
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Joined: 22 Jan 12
Posts: 36
ID: 128024
Credit: 4,798,956
RAC: 0
321 LLR Bronze: Earned 10,000 credits (80,384)Cullen LLR Bronze: Earned 10,000 credits (47,259)ESP LLR Bronze: Earned 10,000 credits (20,394)PPS LLR Silver: Earned 100,000 credits (111,379)PSP LLR Silver: Earned 100,000 credits (264,107)SoB LLR Silver: Earned 100,000 credits (338,553)SR5 LLR Bronze: Earned 10,000 credits (65,445)TRP LLR Bronze: Earned 10,000 credits (80,579)Woodall LLR Bronze: Earned 10,000 credits (48,743)PPS Sieve Ruby: Earned 2,000,000 credits (2,656,348)TRP Sieve (suspended) Bronze: Earned 10,000 credits (87,598)GFN Gold: Earned 500,000 credits (995,737)
Message 64001 - Posted: 31 Mar 2013 | 12:16:03 UTC

i have a 1.6GHz atom netbook. I can only run riesel sieve and llr pps on it. Other task are too long with respect to their time-out.
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Message boards : Prime Sierpinski Problem : Patience, Patience

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