Many WUs on GTX 460 taking a long time


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Questions and Answers : GPU applications : Many WUs on GTX 460 taking a long time

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Profile Joel
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Message 1080251 - Posted: 22 Feb 2011, 3:39:10 UTC
Last modified: 22 Feb 2011, 3:43:30 UTC

I just installed my new Fermi card during the time that everything was coming back online last week, hoping to start crunching like mad. But when I finally downloaded some work, most of it is taking way too long, up to two hours per WU. I'm just running one at a time on the card for now, and I'm using optimized apps and Fred's priority tool to make the CUDA tasks get high CPU priority. Here's a sample problem unit:

http://setiathome.berkeley.edu/result.php?resultid=1807201000

It's not VLAR (obviously), so what is going wrong? In fact it's a pretty high AR, right?

Profile BilBg
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Message 1080334 - Posted: 22 Feb 2011, 13:10:06 UTC - in response to Message 1080251.
Last modified: 22 Feb 2011, 13:30:10 UTC



Do you use (any) screensaver?
Do you often play 3D games?
Open programs (e.g. browser)?

Did you Reboot recently?

Exit BOINC and check the GPU load (by GPU-Z)(if another program is using the GPU).
Also check which process uses the most CPU.
Try running without the Fred's priority tool.
Check the speed (MHz) of GPU/shaders/video RAM during the GPU computation.


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- ALF - "Find out what you don't do well ..... then don't do it!" :)

Profile Joel
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Message 1080442 - Posted: 22 Feb 2011, 22:32:42 UTC
Last modified: 22 Feb 2011, 22:33:19 UTC

I don't run games at all and usually don't have any other programs (browser etc) open. I was letting the boinc screensaver run (with no SETI graphics, obviously, just stats showing) and I tried disabling that. This looks like it helped. All WUs since that change have taken a reasonable amount of time. Hopefully it holds up and that really was the problem. Not sure why that non-intensive screensaver would have messed with the GPU, but that may have been it.

Questions and Answers : GPU applications : Many WUs on GTX 460 taking a long time

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