Convert matlab code to Cuda c++ (FFT of 2d Images)

How can the below Matlab code be converted into Cuda c++? It is to apply FFT of the 2D images.

 Input: ptycho.m_wp; %4 dimensional matrix of size (65 x 65 of 2D images of 90 x 90 pixels)
        size4D=[65,65,90,90];

    size4D = [size(ptycho.m_wp,1), size(ptycho.m_wp,2), ptycho.ObjSize(1), ptycho.ObjSize(2)];
      mean_m_wp=zeros(size(ptycho.m_wp,1),size(ptycho.m_wp,2));
      sumI=0;
      fprintf('FT{M} w.r.t Probe Positions...')
    % allocate memory for G matrix
    G_wp = complex(zeros(size4D));
    disp('*****');
    disp('Looping through FFT on CPU');

    for i = 1:size4D(1)
        for j=1:size4D(2)
            G_wp(i,j,:,:) = fftshift(fft2(ifftshift( ImagePadMean(squeeze(ptycho.m_wp(i,j,:,:)),ptycho.ObjSize))));
        end
    end
    mean_m_wp = mean(mean(ptycho.m_wp,4),3);
    sumI = sum(ptycho.m_wp(:));

Answer 1

[Kanishk]

Hello Alaa,

You can use the "GPU Coder" application in MATLAB to generate CUDA C++ code from MATLAB code. You can generate CUDA C++ source code, static libraries, dynamically linked libraries, and executables that you can then integrate into existing CUDA C++ applications outside of MATLAB.

The application is accessible from toolstrip on Apps tab, under Code Generation.

You can learn more about 'GPU Coder' by following this documentation.

https://www.mathworks.com/help/gpucoder/ref/gpucoder-app.html

Cheers!!