Sierpinski / Riesel Base 5 LLR

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davidbam
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#11 Re: Sierpinski / Riesel Base 5 LLR

Post by davidbam »

Bear in mind that I am just a Points Whore - doesn't matter to me if I find the Prime or not (although I do reckon wingman should get equal recognition for any primes found)
I think this is fool-proof but could you just try it for me please? • There are 10 types of people in the world; those who understand binary, and those who don’t
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#12 Re: Sierpinski / Riesel Base 5 LLR

Post by Gibson Praise »

davidBAM wrote: Sun Feb 09, 2020 1:00 pm Bear in mind that I am just a Points Whore - doesn't matter to me if I find the Prime or not (although I do reckon wingman should get equal recognition for any primes found)
Go for it. I'd like to know how it turns out, definitely. PG has a strong cultural bias toward finding the prime!. The advice on the forums most always takes that as a given.

Tangent #1: February is the Tour de Prime at PG where the whole idea is to find t5k (top 5000) primes and for the first time in years I found one. Nifty badge Image and all! :wink: ( and yes, running GFN-16 gpu to get it was horribly inefficient and point-poor )

Tangent #2: I wonder what the Venn diagram of Post Whores and Points Whores looks like?
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#13 Re: Sierpinski / Riesel Base 5 LLR

Post by davidbam »

Are you trying to tell me that I post too much? :D
I think this is fool-proof but could you just try it for me please? • There are 10 types of people in the world; those who understand binary, and those who don’t
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#14 Re: Sierpinski / Riesel Base 5 LLR

Post by Gibson Praise »

davidBAM wrote: Sun Feb 09, 2020 6:34 pm Are you trying to tell me that I post too much? :D
Never! :o :shock:
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scole of TSBT
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#15 Re: Sierpinski / Riesel Base 5 LLR

Post by scole of TSBT »

On my dual CPU 14c/28t Xeon V4 rigs, linux Mint 19.1 is slightly faster than Win7 64 and the sweet spot for these chips appears to be 7 threads per WU. I started at 28t per WU, then 14t, 7t and 4t. Pay per thread increased to 7t per WU, then the pay per thread dropped running 4t per WU.
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#16 Re: Sierpinski / Riesel Base 5 LLR

Post by davidbam »

How many 7t threads were you running simultaneously please? And how does the PPD look?
I think this is fool-proof but could you just try it for me please? • There are 10 types of people in the world; those who understand binary, and those who don’t
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#17 Re: Sierpinski / Riesel Base 5 LLR

Post by scole of TSBT »

8x 7t WU at a time but I appear to have had an error in the formula. Re-testing.
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#18 Re: Sierpinski / Riesel Base 5 LLR

Post by davidbam »

Okay, so HT on and hitting L3 cache as hard as you can.

I am scrapping all my notes and tackling it from the other end. HT still on but only very low counts of 4t WU until I get an idea of what each machine is capable of time-wise

Note to self: WU downloaded on 11-Feb fit this description
I think this is fool-proof but could you just try it for me please? • There are 10 types of people in the world; those who understand binary, and those who don’t
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#19 Re: Sierpinski / Riesel Base 5 LLR

Post by scole of TSBT »

Dual Xeon V4 14c/28t 3Ghz, HT on
OS Threads per WU # WU Avg credit per thread-run-second
Win7 7 8 0.033270248
linux 4 14 0.021093011
linux 7 8 0.034808078
linux 14 4 0.031545409
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#20 Re: Sierpinski / Riesel Base 5 LLR

Post by davidbam »

Thank you. What is approx run time on "linux 7 8" please

2990WX : Average at 4 x 4t: 12067 secs (2139pts / WU)

3900X : Average at 3 x 4t : 6251 secs ( 2249pts / WU)

asus2: Average at 2 x 4t: 8415 secs
t7910: Average at 2 x 4t: 9715 secs

asus1: 9614
I think this is fool-proof but could you just try it for me please? • There are 10 types of people in the world; those who understand binary, and those who don’t
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#21 Re: Sierpinski / Riesel Base 5 LLR

Post by scole of TSBT »

davidBAM wrote: Tue Feb 11, 2020 2:32 pm Thank you. What is approx run time on "linux 7 8" please
Runtimes range from 2.1 to 2.9 hrs with avg runtime of 2.62 hrs
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#22 Re: Sierpinski / Riesel Base 5 LLR

Post by davidbam »

Hmmm - I think my 2990wx machines might be throttling back due to heat. What is their max running temperature before that happens please?
I think this is fool-proof but could you just try it for me please? • There are 10 types of people in the world; those who understand binary, and those who don’t
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#23 Re: Sierpinski / Riesel Base 5 LLR

Post by Bryan »

I think it is 65C. I have to down clock mine to stock (3.0) to run PG. @3.3 they throttle ... on air.
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