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Is there any way to find out which process is using the GPU for intensive calculations? (OpenCL, CUDA, etc? Primarily OpenCL?)

e.g. if you run an OpenCL-powered video transcoder, you'll see nothing in your task manager that tells your GPU is burning through data at a ridiculous rate - though your fans will have kicked into overdrive.

If the reply is driver-specific, I am interested in nVidia primarily.

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up vote 7 down vote accepted

Turns out Sysinternals' Process Explorer can do this (of course it can, there's nothing it can't do, apparently!).

Process Explorer GPU load by process

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Process Hacker, the open source alternative to Process Explorer, also shows the GPU usage.

Press CTRL+I to get the system information Window and click on the GPU Tab, so get a graph with the GPU usage.

enter image description here

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By process or just total? – Mahmoud Al-Qudsi Apr 21 '13 at 17:56
hover over the high spikes in the graph and you get a tooltip. But the tool also offers a GPU column. – magicandre1981 Apr 21 '13 at 18:52

AMD Catalyst Control Center has an indicator of GPU activity in the Performance section. I would assume nVidia software has a similar output. It's usually associated with overclocking.

enter image description here

Otherwise you can download the free GPU-Z. It includes a GPU Load output.

enter image description here

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Thanks, but you misunderstand my question - I need to identify the process responsible for the GPU load. – Mahmoud Al-Qudsi Apr 21 '13 at 1:39
Ah relied more on the title. I'm going to edit it to be more clear. – Brad Patton Apr 21 '13 at 2:10
Thanks, appreciate it. – Mahmoud Al-Qudsi Apr 21 '13 at 2:41

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