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Message boards : Number crunching : New computer running slow?

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Arjant2Project donor
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Joined: 14 Aug 10
Posts: 198
ID: 65556
Credit: 215,449,693
RAC: 32
321 LLR Gold: Earned 500,000 credits (927,527)Cullen LLR Silver: Earned 100,000 credits (261,684)ESP LLR Silver: Earned 100,000 credits (109,285)PPS LLR Ruby: Earned 2,000,000 credits (2,515,456)PSP LLR Gold: Earned 500,000 credits (861,513)SoB LLR Silver: Earned 100,000 credits (154,103)SR5 LLR Silver: Earned 100,000 credits (139,377)SGS LLR Silver: Earned 100,000 credits (361,314)TRP LLR Amethyst: Earned 1,000,000 credits (1,257,262)Woodall LLR Silver: Earned 100,000 credits (441,996)321 Sieve (suspended) Silver: Earned 100,000 credits (181,262)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,124,289)PPS Sieve Double Bronze: Earned 100,000,000 credits (189,297,056)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (49,211)TRP Sieve (suspended) Silver: Earned 100,000 credits (371,632)AP 26/27 Ruby: Earned 2,000,000 credits (4,115,774)GFN Turquoise: Earned 5,000,000 credits (9,301,939)PSA Gold: Earned 500,000 credits (979,013)
Message 134361 - Posted: 30 Oct 2019 | 13:37:28 UTC
Last modified: 30 Oct 2019 | 14:36:09 UTC

I just installed some new hardware at the office.

Intel i7-9700
16GB RAM (DDR 2400)

Currently testing 321 LLR, 6 tasks (so 2 cores are kept idle for other purposes), no HT. The estimated time is more than 2 days for each unit. Which concurs with the calculation done after 30 minutes (not even 1% per unit finished).

Temperatures are around 70 degrees Celcius, cores are running at 3800Mhz.
Any ideas what might be wrong? I think each unit should be done in less than 24 hours on this specs?
I know it is not the fastest memory, but that can't be responsible for twice the processing time.
____________

mackerelProject donor
Volunteer tester
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Joined: 2 Oct 08
Posts: 2536
ID: 29980
Credit: 494,291,084
RAC: 6,030
Discovered 6 mega primesEliminated 1 conjecture "k"Found 3 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de PrimesFound 5 primes in the 2019 Tour de PrimesFound 6 primes in the 2020 Tour de PrimesFound 5 primes in the 2021 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (8,774,878)Cullen LLR Turquoise: Earned 5,000,000 credits (5,903,451)ESP LLR Turquoise: Earned 5,000,000 credits (7,207,880)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,122,074)PPS LLR Double Bronze: Earned 100,000,000 credits (100,874,964)PSP LLR Jade: Earned 10,000,000 credits (16,676,406)SoB LLR Sapphire: Earned 20,000,000 credits (20,019,367)SR5 LLR Sapphire: Earned 20,000,000 credits (25,605,231)SGS LLR Turquoise: Earned 5,000,000 credits (7,360,621)TPS LLR (retired) Bronze: Earned 10,000 credits (34,130)TRP LLR Sapphire: Earned 20,000,000 credits (21,424,369)Woodall LLR Turquoise: Earned 5,000,000 credits (8,171,820)321 Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,236,219)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,383,853)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,626,419)PPS Sieve Emerald: Earned 50,000,000 credits (76,969,144)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,293,882)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,012,757)AP 26/27 Sapphire: Earned 20,000,000 credits (21,918,894)GFN Emerald: Earned 50,000,000 credits (77,695,028)WW Sapphire: Earned 20,000,000 credits (34,040,000)PSA Ruby: Earned 2,000,000 credits (2,939,755)
Message 134362 - Posted: 30 Oct 2019 | 14:48:17 UTC - in response to Message 134361.

The tasks each take a fair bit of data size. Quite simply, when running 6 tasks this data can't fit within the CPU, and it hits the ram hard. 2400 ram is pretty slow by current standards, but even if you went up to 3200 that wouldn't be enough to feed 6 tasks.

My suggestion would be to run these tasks multi-thread. I think 1 task using as many cores as you like is probably best, but you could also test 2 tasks at the same time, each using half the available cores. I don't think there is any way to change it for tasks already in progress using the web interface, so either endure it and let them finish, or abort and get some new ones with multi-thread set.

Arjant2Project donor
Send message
Joined: 14 Aug 10
Posts: 198
ID: 65556
Credit: 215,449,693
RAC: 32
321 LLR Gold: Earned 500,000 credits (927,527)Cullen LLR Silver: Earned 100,000 credits (261,684)ESP LLR Silver: Earned 100,000 credits (109,285)PPS LLR Ruby: Earned 2,000,000 credits (2,515,456)PSP LLR Gold: Earned 500,000 credits (861,513)SoB LLR Silver: Earned 100,000 credits (154,103)SR5 LLR Silver: Earned 100,000 credits (139,377)SGS LLR Silver: Earned 100,000 credits (361,314)TRP LLR Amethyst: Earned 1,000,000 credits (1,257,262)Woodall LLR Silver: Earned 100,000 credits (441,996)321 Sieve (suspended) Silver: Earned 100,000 credits (181,262)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,124,289)PPS Sieve Double Bronze: Earned 100,000,000 credits (189,297,056)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (49,211)TRP Sieve (suspended) Silver: Earned 100,000 credits (371,632)AP 26/27 Ruby: Earned 2,000,000 credits (4,115,774)GFN Turquoise: Earned 5,000,000 credits (9,301,939)PSA Gold: Earned 500,000 credits (979,013)
Message 134363 - Posted: 30 Oct 2019 | 15:12:05 UTC - in response to Message 134362.

Ok didnt now that.
Will try with mt on 6 cores then.
Thanks.
____________

Message boards : Number crunching : New computer running slow?

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