CUDA not using all my proc cores


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Questions and Answers : GPU applications : CUDA not using all my proc cores
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Profile Royce Moore

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Message 845285 - Posted: 26 Dec 2008, 13:16:49 UTC

I'm running a Quad core box that previously made use of all four cores for Bonic. Since moving to CUDA it only uses 2-3 cores at a time, it varies? All my prefs are set to use 100% of the cores, any ideas?
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Profile Byron S Goodgame
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Message 845287 - Posted: 26 Dec 2008, 13:30:34 UTC - in response to Message 845285.  

This info about a cc_config.xml was posted in an earlier thread.
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Profile Jord
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Message 845299 - Posted: 26 Dec 2008, 14:57:34 UTC - in response to Message 845285.  

One core is always used to keep track of what the GPU does. The other cores can crunch Astropulse, or any other project, just not the Seti Enhanced tasks (not possible yet).

Using Byron's "workaround" you best watch out, as when the GPU runs out of work, you'll end up with 3 cores doing work and one core doing two tasks at the same time. The ncpus option is really best not used for this.
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Questions and Answers : GPU applications : CUDA not using all my proc cores


 
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