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Message boards : Graphics cards (GPUs) : GTX280 on Vista 64 need more CPU time

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Profile Kokomiko
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Message 3906 - Posted: 20 Nov 2008 | 13:17:50 UTC

I had a long time watched, that my GTX280 since the application greater than 2.48 is slower than my GTX260². The average runtime was above 36,000 seconds. Now I have the BOINC manager told, don't use more than 99% of CPU time. As a result only 3 CPU tasks are running plus the GPU task. But the first WU after changing was only running 24229.265 s, that's over 11,000 seconds faster then without this setup.
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Profile Stefan Ledwina
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Message 3908 - Posted: 20 Nov 2008 | 14:18:39 UTC - in response to Message 3906.

Yes, that's how it works best on Windows. Keith and I had pointed that out a few weeks ago that the app runs faster if you run only 3 CPU tasks plus the GPUGRID task on a Quadcore...
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Message 3909 - Posted: 20 Nov 2008 | 14:27:36 UTC

Is it best to set the BOINC CPU usage at 99% or 75%(as I read elsewhere) or does it not matter? ... quad core...

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Message 3910 - Posted: 20 Nov 2008 | 15:42:03 UTC - in response to Message 3909.

I haven't tested it, but I have set my Windows Quad to use 75% of the CPUs...
On Linux it doesn't matter if you run 3 or 4 CPU tasks - the speed of the GPUGRID task is always the same.
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Message 3926 - Posted: 22 Nov 2008 | 13:05:11 UTC

CPU time vs number of CPUs

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Message boards : Graphics cards (GPUs) : GTX280 on Vista 64 need more CPU time

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