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I have 2-GPU in my computer, I wanted to use both the GPU's to perform the function. Hence I feed, part of the array to one GPU and the remaining to the second GPU.

Agpu1=gpuArray(A(:,:,1:n/2)); %chunk #1 : send to GPU with device index 1

Agpu2=gpuArray(A(:,:,n/2+1:n)); %chunk #2 : send to GPU with device index 2

F(1)=parfeval(@Function,2,Agpu1,1);

F(2)=parfeval(@Function,2,Agpu2,2);

[o1,o2] = fetchOutputs(F,'UniformOutput',false); % Blocks until complete

When I fetch the outputs using the last statement, I get the error "Error using parallel.Future/fetchOutputs : One or more futures resulted in an error" .

1) Does this mean, fetch outputs is trying to fetch the output, when the other GPU is still performing the operation. How to solve this ?

In the above link, when I try printing the gpuDevice used, it always shows gpu2 is being used and gpu 1 is idle. How to confirm both GPU's are being used ?

Thankyou!

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