Problems running gpuArray function - CUDA driver

Hi all,

I have the following code lines execuding an error message:

>> size(img)
ans =
   215   205   156     8
>> img_gpu = gpuArray(img);

Unable to load CUDA driver. The library name used was nvcuda.dll. The error was:

nvcuda.dll is not a valid Win32 application.

Update or reinstall your GPU driver. For more information on GPU support, see GPU Support by Release.

I have updated my GPU driver and installed the CUDA Toolkit 11.2 on my Windows 10 with a Intel(R) UHD Graphics 620. I have Matlab 2020a for 64-bit.

I found the similiar problem documented here.

Can somone recommend me a solution?

Thanks,

Patrick

Answer 1

[Matt J]

Make sure you've rebooted the computer after the installation.

[Patrick Lehmann]

Yes, I have tried that several times. I have a feeling that my GPU is maybe not suitable for this application.

Answer 2

[Catalytic]

Matlab R2020a requires CUDA Toolkit 10.1.

[Matt J]

I'm not sure the CUDA Toolkit version from that table is required unless you are using it to compile CUDA mex files that Matlab will invoke.

[Patrick Lehmann]

I have tried that, rebooted and it still doesn't work. I also want to point out again, that I have a GPU by Intel

[Jason Ross]

You need an nVidia GPU to use GPU functions in MATLAB. https://www.mathworks.com/help/parallel-computing/gpu-support-by-release.html