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CUDA works in version 8 but not in version 9. Is there a way to fix the problem in version 9? I've installed the latest CUDA from the official website https://developer.nvidia.com/cuda-downloads

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I think you might have to force reinstall it... I had a similar issue when v9 first came out (I don't exactly recall what I did) –  rm -rf May 19 '13 at 1:47
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This has happened to me. Try this in v9: CUDAResourcesUninstall[]; CUDAResourcesInstall[]. The download will take some time. –  Szabolcs May 19 '13 at 2:38
    
@Szabolcs it works! Thanks so much! –  xslittlegrass May 19 '13 at 17:01
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1 Answer

up vote 3 down vote accepted

This may happen because the CUDA resources downloaded are for version 8 and are not compatible with version 9. The problem can be fixed by re-installing them. To do this, evaluate the following in version 9:

Needs["CUDALink`"]

CUDAResourcesUninstall[]
CUDAResourcesInstall[]

The download is rather large, so it might take a while.

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