fftn GPU

I am trying to port some of my code to GPU computing which is supported nativly in the 2011a version (with the parallel computing toolbox).

Unfortunately fftn is not supported on the gpu neither is fft(X,[],dim) (fft FFT operation across a dimension). Does anybody know how to write a fast algorythm for fftn using just fft(X) or maybe fft2(X)? I only need it in 3d.

Thx a lot

Michael

Answer 1

[Walter Roberson]

Perhaps Jacket has an FFTn ?

[Michael Vogel]

It does but I would like to stick with the native implementation, mainly because of future version support and comfort (in the native version all commands are just the same and are executed on the gpu if one of the varibles is stored on the gpu).

[John Melonakos]

Yes, FFTN is supported in Jacket - http://wiki.accelereyes.com/wiki/index.php/FFTN

Also, the only changes you need to make to your code to run it with Jacket is a change of datatype. All other functions are overloaded using the standard MATLAB function overloading capability. Learn more here: http://wiki.accelereyes.com/wiki/index.php/Jacket_Basics