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preda · 2019-11-13, 19:34

Indeed, you want to get clinfo to report more that 0 platforms/devices.

You need an OpenCL implementation even for the CPUs. I seem to remember that Intel offers one for download (for Intel CPUs) but I don't have a link. OTOH I don't expect OpenCL on CPUs to be actually useful other than for trying out/debugging.

For an Nvidia GPU, it is my impression that the CUDA *toolkit* brings the OpenCL driver. (I don't have experience with Nouveau)

For an AMD GPU, one may use either ROCm, or amdgpu-pro, which both have different OpenCL compilers.

So the first step is to get clinfo to recognize something.

Afterwards when starting programming, you may have a look at clwrap.h in gpuowl source code for some utils like compiling a kernel etc.

2019-11-13, 19:34	#2
preda "Mihai Preda" Apr 2015 2·691 Posts	Indeed, you want to get clinfo to report more that 0 platforms/devices. You need an OpenCL implementation even for the CPUs. I seem to remember that Intel offers one for download (for Intel CPUs) but I don't have a link. OTOH I don't expect OpenCL on CPUs to be actually useful other than for trying out/debugging. For an Nvidia GPU, it is my impression that the CUDA toolkit brings the OpenCL driver. (I don't have experience with Nouveau) For an AMD GPU, one may use either ROCm, or amdgpu-pro, which both have different OpenCL compilers. So the first step is to get clinfo to recognize something. Afterwards when starting programming, you may have a look at clwrap.h in gpuowl source code for some utils like compiling a kernel etc.