1 task using 2 GPUs

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Message boards : Number crunching : 1 task using 2 GPUs
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nanoprobe
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Message 5604 - Posted: 30 Oct 2013, 23:46:02 UTC

I have a machine with 2 GTX660TIs. I tried running Moo on one and GPU grid on the other. Both cards seemed to be working fine but my GPU grid tasks were now taking twice as long to complete. After trial and error this is what I found. If I suspended the GPU task and let the Moo task run both cards would still show 99% usage. If I suspended the Moo task and let the GPU grid task run one card would be at 99% the other at 0%. What in the world would cause 1 Moo task to run on 2 cards? No SLI bridge involved.
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Profile Coleslaw
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Message 5605 - Posted: 31 Oct 2013, 3:22:25 UTC

nanoprobe, last I recalled Moo! was unique to other projects in that it would utilize both cards on one work unit. Forum searches aren't great on this topic, but if you read back a page or two, you will see posts discussing behavior with multiple cards and this seems to still be common.
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Message boards : Number crunching : 1 task using 2 GPUs


 
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