QuChemPedIA@home

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Alez
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#21 Re: QuChemPedIA@home

Post by Alez » Mon Jan 06, 2020 1:11 am

Same for me, Vbox has been a pointless exercise.
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#22 Re: QuChemPedIA@home

Post by davidBAM » Wed Jan 15, 2020 10:06 am

Not a good start from me. Two WU errored, 50 were invalid after significant run times. Only 3 validated at about 8pts per thread per hour on an OC 3900X. To add insult to injury, I forgot to join the team so even they didn't count.

Is this normal? (Linux)
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#23 Re: QuChemPedIA@home

Post by UBT - Woodles » Wed Jan 15, 2020 1:28 pm

The only errors I've had have been during downloading or cancelled by the server, none resulted in any time being lost.

However, I do have about a third ending up as invalid, most after 30 ish seconds but some running to the normal execution time.

Every one has invalids, it's a project "feature" :)

I'm getting about 50 credits an hour with a single thread, are you running them multithreaded?
Last edited by UBT - Woodles on Thu Jan 16, 2020 1:12 pm, edited 1 time in total.
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#24 Re: QuChemPedIA@home

Post by davidBAM » Wed Jan 15, 2020 1:37 pm

Thanks. No, not running MT. Does the last setting really mean # threads per WU ?
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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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#25 Re: QuChemPedIA@home

Post by UBT - Woodles » Wed Jan 15, 2020 1:56 pm

You would think so but no. I'm not sure what it's used for, I have it set to "No Limit" but tasks run on a single thread.

They have no work at the moment so I can't try different options.

The project developer has said that they've experimented and there's no advantage to using more than one core per workunit.

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#26 Re: QuChemPedIA@home

Post by davidBAM » Wed Jan 15, 2020 2:11 pm

Okay thanks. Maybe I'll try again later on a lesser machine but there is no way I am putting my thoroughbred 3900X onto something which has 50 out of 55 invalid :D

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#27 Re: QuChemPedIA@home

Post by UBT - Woodles » Wed Jan 15, 2020 2:41 pm

Makes sense :lol:

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#28 Re: QuChemPedIA@home

Post by davidBAM » Thu Jan 16, 2020 8:47 am

tried an Intel machine this time, older OS (ubuntu 18.10): 3 valid, 74 invalid

Not a good ratio, especially when some of the invalid WU have run for 20-30 mins before failing.

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#29 Re: QuChemPedIA@home

Post by UBT - Woodles » Thu Jan 16, 2020 9:07 am

I only have the one box on QuChem so can't help with different CPUs or OS.

If it helps, I've just downloaded four tasks and all ended up as invalid, three after 30 seconds, one after twenty minutes. Normally I'd get at least one valid out of four but it's a small sample size.

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#30 Re: QuChemPedIA@home

Post by davidBAM » Thu Jan 16, 2020 9:27 am

the CPU/OS may be a red herring but, out of interest, what are you running on please and I'll see if I have anything close

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#31 Re: QuChemPedIA@home

Post by UBT - Woodles » Thu Jan 16, 2020 1:11 pm

It's a 1950X, default settings with 32 Gig of RAM running Ubuntu 19.04 if I remember correctly. QuChem is down again so I can't check.

Edit: Just had a thought and checked on WUProp, details are correct (also Boinc version 7.14.2 if it matters?)

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