How does this CUDA thing work?

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Neal Chantrill
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Message 874471 - Posted: 11 Mar 2009, 0:58:52 UTC
Last modified: 11 Mar 2009, 1:19:27 UTC

I found that one of my cards will run CUDA units by accident so I enabled it and it's happily ran for about a month. Now all of a sudden its not running any units at all. I do have it set for enhanced units only and not astropulse. Will CUDA run any of the units or are there units especially for GPU crunching? Is the reason I have no units down to the fact there are none available?

Thanks for taking the time to read.

Edit. Sorry for posting in the wrong section and thanks to the kind person who moved it. :o)


I had a read and found the info I needed thanks. Seems I needed to detach and then reattach which as worked.
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OzzFan Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
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Message 874505 - Posted: 11 Mar 2009, 3:38:29 UTC

CUDA does calculations on SETI MultiBeam workunits only. CUDA does not do AstroPulse at this time. If there is no MultiBeam work for some reason, then CUDA will not run, and if you do not have AstroPulse (AP) enabled/allowed, then you will not get any units until more MultiBeam (MB) are made available.
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Profile Jord
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Message 874557 - Posted: 11 Mar 2009, 7:14:31 UTC - in response to Message 874471.  

I had a read and found the info I needed thanks. Seems I needed to detach and then reattach which as worked.

Please don't do that. What if everyone just went and did that? There's be no bandwidth left over for the regulars who just sit and wait for their computers to normally fetch work again.

By detaching you're dumping all the work and project executables that are on your system, deleting them. By reattaching you are downloading them again from the servers. With that same 50-50% chance to only get CPU work again. What if you do next time? Keep on detaching/reattaching until you deem it's done right?

Ozzfan here can tell you a thing or two about micromanaging, as that's called. ;-)
Just don't do it, a fix for the work fetch will come in the next Boinc version, but without a separate feeder for CUDA, there's always going to be a 50-50% chance that you will get one or the other.
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Questions and Answers : GPU applications : How does this CUDA thing work?


 
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