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clEnqueueCopyBuffer performance bug - 4bytes in 8ms

Question asked by tomer_gal on Oct 12, 2015
Latest reply on Oct 12, 2015 by nibal

Hi,

As I am currently investigating performance variance for one of my clients, it seems that the root cause is a very large variance and slowdown for the clEnqueueCopyBuffer.

Attached is a screenshot where 4bytes copying on the GPU consumes 8ms. That's obviously a performance bug.

And it's not happening on the beginning of the processing so it's not related to any kind of warm up.

 

AMD Bug.jpg

 

Regards,

Tomer Gal, CTO at OpTeamizer

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