3D matrix fftshift on gpu

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Humam Helfawi
Humam Helfawi on 20 Aug 2018
Commented: Edric Ellis on 21 Aug 2018
I have an 3D matrix 512*512*100. I want to apply fftshift on each page of it using the GPU. What I am doing right now is:
G = rand(512,512,100, 'gpuArray');
for i=1:100
G(:,:,i) = fftshift(G(:,:,i));
end
Is there a faster way to apply fftshift without doing it in a loop? For example, fft2 can be applied directly to an 3D array performing the operation on each page separately. However, fftshift does not work like that. Furthermore, fftshift is not supported by pageFun.
Any suggestion?
  1 Comment
Edric Ellis
Edric Ellis on 21 Aug 2018
Answered here: https://stackoverflow.com/questions/51935549/fftshift-on-a-3d-matrix-on-gpu

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