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Message boards : Number crunching : GERARD_A2AR Low GPU Utilization

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Matt
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Message 42839 - Posted: 25 Feb 2016 | 12:10:09 UTC

I'm noticing the current A2AR tasks have a low GPU utilization. My 980Ti is crunching one currently at 44% and has therefore downclocked to its base clock speed. My 750Ti is also reporting lower than usual GPU utilization. Has anyone else noticed this or should I start investigating for problems with my machine?

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Profile Retvari Zoltan
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Message 42840 - Posted: 25 Feb 2016 | 16:13:51 UTC - in response to Message 42839.

I'm noticing the current A2AR tasks have a low GPU utilization. My 980Ti is crunching one currently at 44% and has therefore downclocked to its base clock speed. My 750Ti is also reporting lower than usual GPU utilization. Has anyone else noticed this or should I start investigating for problems with my machine?
You're not alone with this issue.
See the following threads:
"low GPU utilization with recent Gerard CXCL12?"
"About the GERARD_A2AR batch"
"GPU not fully utilized +Solution."

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Profile Retvari Zoltan
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Message 42841 - Posted: 25 Feb 2016 | 23:22:38 UTC - in response to Message 42839.
Last modified: 25 Feb 2016 | 23:30:31 UTC

I'm noticing the current A2AR tasks have a low GPU utilization. My 980Ti is crunching one currently at 44% and has therefore downclocked to its base clock speed. My 750Ti is also reporting lower than usual GPU utilization. Has anyone else noticed this or should I start investigating for problems with my machine?
Now that I got home I see that the workunits from the batch called "GERARD_A2AR_NUL" are those which are extremely slow.
I had to suspend all CPU tasks to get the GPU usage up to 42~48%.
I have no idea how to increase the GPU usage any further. (besides running two simultaneously on the same GPU)

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Message 42842 - Posted: 25 Feb 2016 | 23:27:50 UTC
Last modified: 25 Feb 2016 | 23:28:48 UTC

No CPU tasks running on this machine. I've suspended GPUGrid on the 750Ti and am now running 2x on the 980Ti. I guess I'll keep it like this until we get this sorted out.

I've also noticed the CPU usage on these tasks to be quite a bit higher than normal.

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Message 42843 - Posted: 26 Feb 2016 | 9:03:12 UTC
Last modified: 26 Feb 2016 | 9:17:00 UTC

I have a refinement to make regarding the batch name: the "GERARD_A2AR_NUL" workunits were fine. (this is a previous batch).
Now we have (probably a follow-up) batch called "GERARD_A2AR_NUL1D" which is extremely slow.

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Message boards : Number crunching : GERARD_A2AR Low GPU Utilization

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