Primegrid 2020 Challenge #1

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Gibson Praise
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#1 Primegrid 2020 Challenge #1

Post by Gibson Praise » Sat Jan 18, 2020 2:43 am

Date: 24-Jan-2020, 00:00:00 UTC to 25-Jan-2020 00:00:00 UTC
Project: 321-sieve (CPU only)

As with all PG Challenges, only workunits downloaded after the start of the challenge and completed and returned by the end of the challenge are valid (double-check validation not required).

This is the first of nine challenges this year, the only 1-day challenge in the series ( http://www.primegrid.com/challenge/challenge.php ), and the only one till mid-March.

Workunits are quick ( under 10 min on EYPC 7281 @ 2.1ghz, under 3 min on i9-9900K @ 3.6ghz edit: wrong sieve / wrong times/ right clown. corrected: 1hr 10min - EPYC, 50 min - i9 ) and are best run with hyper-threading on ( as opposed to most PG cpu apps which use the LLR algorithm and prefer HT off ). edit: 609.89 pts / wu

Please feel free to join me in this inaugural challenge,
g
Last edited by Gibson Praise on Wed Feb 12, 2020 6:59 am, edited 2 times in total.
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scole of TSBT
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#2 Re: Primegrid Challenge #1

Post by scole of TSBT » Sat Jan 18, 2020 3:18 am

Perfect. I need less than 5k hours to get WUProp lime 25k hours on that app.
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davidBAM
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#3 Re: Primegrid Challenge #1

Post by davidBAM » Sat Jan 18, 2020 12:01 pm

Dipping a toe in the water now. Any reason not to run all available threads? That is, is there a minimum RAM or L3 Cache bottleneck that you know of on larger machines?

ETA : low RAM requirement (137M on Linux)
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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#4 Re: Primegrid Challenge #1

Post by davidBAM » Sat Jan 18, 2020 3:00 pm

Gibson Praise wrote:
Sat Jan 18, 2020 2:43 am
50 min - i9
Yup - same on 3990X https://tsbt.co.uk/forum/viewtopic.php? ... 758#p79758

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#5 Re: Primegrid Challenge #1

Post by davidBAM » Thu Jan 23, 2020 1:24 am

reminder - starts at midnight UTC

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#6 Re: Primegrid Challenge #1

Post by scole of TSBT » Thu Jan 23, 2020 2:49 am

Ready!

For maximum credit during the challenge, clear your cache before the start and don't download any new WU until after the start. It's only a 24 hour challenge so it will make a difference.
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#7 Re: Primegrid Challenge #1

Post by scole of TSBT » Fri Jan 24, 2020 12:10 am

Time to go!

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#8 Re: Primegrid Challenge #1

Post by davidBAM » Fri Jan 24, 2020 12:25 am

I am fully loaded. About 20mins until first WUs turned in

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Bryan
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#9 Re: Primegrid Challenge #1

Post by Bryan » Fri Jan 24, 2020 1:52 am

Somebody get a picture ... we're in 3rd.
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#10 Re: Primegrid Challenge #1

Post by davidBAM » Fri Jan 24, 2020 1:57 am

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