Comments (1)
carterbox
commented on May 23, 2024
I assume that the best approach is to use the checkerboard multiplication approach for fftshift before and after the FFT because this approach is easily inplace and parallelizable. I found an interesting inplace memory roll, but I think it will be slower for ND operations because it requires 2 copy operations per element per dimension.
Related: https://github.com/OrangeOwlSolutions/FFT/wiki/The-fftshift-in-CUDA
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