gpuArray: CUDA ERROR ALREADY MAPPED

Grace Gu

2014 2 1

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11 次查看（30 天）

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I was trying to use gpuArray, for instance with the following Matlab provided example:

X = rand(10, 'single');
G = gpuArray(X);
classUnderlying(G)   % Returns 'single'
G2 = G .* G;         % Performed on GPU
whos G2              % Result on GPU

But Matlab gives this error message. I checked online, it means the resources already mapped, which does not tell me much. How should I fix this? Previously I had no problem using gpuArray on my matlab. Thank you!

Error using gpuArray
An unexpected error occurred during CUDA execution. The CUDA error was:
CUDA_ERROR_ALREADY_MAPPED

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Grace Gu 2014-2-3

Thank you. I did not try to use gpuArray within parfor or spmd workers. Restarting Matlab did not work. I do have 2 GPUs installed. I have used feval and GPU application too before. I plan to reinstall CUDA tomorrow, and see whether that works.