is reserving one core for CUDA still adviseable?


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Profile Joseph Stateson
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Joined: 27 Jun 08
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United States
Message 37646 - Posted: 29 Apr 2011, 21:25:50 UTC

I have several 4 core systems. Three intel and 5 opteron. All have acceleraters except one of the opterons. I have been setting aside 1 cpu that is not to be used by boinc on all systems with CUDA. I found a long time ago almost all gpu bound projects complete much faster with %75 of cpus assigned.

Is this still required even with the 6.12.26?

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Pepo
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Joined: 3 Apr 06
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Slovakia
Message 37647 - Posted: 29 Apr 2011, 21:50:52 UTC - in response to Message 37646.  

It has never been, but it may help some GPU apps, as you empirically noticed too.I'm doing exactly the same, but mostly to keep some free CPU headroom on any machine I'm working on. On a pure cruncher, I'd possibly leave at most some 0.25 core per GPU - i.e. not unless it is a 8 core machine :-)
Peter
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Message boards : Questions and problems : is reserving one core for CUDA still adviseable?

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