rising and falling gpu usage while crunching[solved]


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Message boards : Number crunching : rising and falling gpu usage while crunching[solved]

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Profile AI4FR
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Message 1357941 - Posted: 18 Apr 2013, 4:05:57 UTC - in response to Message 1357937.

I have two 580's in one of my PC's and had the same problem as you did. When seti would send shorties, the gpu's would run fine at 99%. Otherwise I ran into your issue. I tried 1,2,3, and 4 wu's per gpu. I finally settled on 3. But I had to drop a few cores(6-HT). I now run 3 gpu wu's per card and 6 cpu cores. GPU's run at 98-99% and cpu usage is around 60 or so. My cpu utilizes hyper-threading which I think is the issue. I have not tried it with HT off.

My other machines without HT has no issues at all. The GTX 550's run 3 wu's at a time and all of the cpu. Usage is 99% for gpu and 100% for cpu.

For anyone wondering if dropping a cpu core will help in their machine, simply suspend cpu work while noting gpu usage.

Good luck.



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Message 1357942 - Posted: 18 Apr 2013, 4:27:46 UTC - in response to Message 1357941.

I have two 580's in one of my PC's and had the same problem as you did. When seti would send shorties, the gpu's would run fine at 99%. Otherwise I ran into your issue. I tried 1,2,3, and 4 wu's per gpu. I finally settled on 3. But I had to drop a few cores(6-HT). I now run 3 gpu wu's per card and 6 cpu cores. GPU's run at 98-99% and cpu usage is around 60 or so. My cpu utilizes hyper-threading which I think is the issue. I have not tried it with HT off.

My other machines without HT has no issues at all. The GTX 550's run 3 wu's at a time and all of the cpu. Usage is 99% for gpu and 100% for cpu.

For anyone wondering if dropping a cpu core will help in their machine, simply suspend cpu work while noting gpu usage.

Good luck.



Thanks, I just need to wait until I can get an i7 870 or an i7 875K cpu in about September, that's the best I can do until then, My 2nd PC won't be online until I have a lot more parts, but it's a custom water cooled rig.
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Message 1358169 - Posted: 18 Apr 2013, 17:56:32 UTC
Last modified: 18 Apr 2013, 17:56:49 UTC

Issue solved, I'm unsubscribing from the thread now.
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Message boards : Number crunching : rising and falling gpu usage while crunching[solved]

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