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Old 08-23-09, 07:48 PM   #1
lordvader
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Join Date: Nov 2004
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Default CUDA performance in 2.6.30

Hey all.

I've been using the CUDA seti@home client to crunch units.
I've recently upgraded my linux kernel to 2.6.30, and there is a significant drop in performance (a 20min workunit will take close to 2 hours).
I can verify that I don't have the performance issues with 2.6.28, and I've tried driver version 185.18.31 and 185.18.36 (though I haven't tried the beta driver yet). Has anyone else noticed a downgrade in performance with this kernel ? I'm not sure how many CUDA seti users there are here, but perhaps there are CUDA issues in general ?

I'm posting from work, so don't have too much more info on hand. If there's any info that may help out, let me know, and I'll try muster up more info.
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Old 08-24-09, 08:38 AM   #2
lordvader
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Default Re: CUDA performance in 2.6.30

I've added the bug report file, maybe that will shed some light ...
Attached Files
File Type: gz nvidia-bug-report.log.gz (34.5 KB, 66 views)
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Old 08-24-09, 09:08 AM   #3
Dragoran
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Default Re: CUDA performance in 2.6.30

Quote:
root=UUID=20ba256a-5f52-490b-8d92-b8181af2554e ro nopat quiet splash crashkernel=384M-2G:64M@16M,2G-:128M@16M
Does removing "nopat" help?
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Old 08-24-09, 09:22 AM   #4
lordvader
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Default Re: CUDA performance in 2.6.30

No.

I actually added nopat to see if it would make a differenced, but to no avail.
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