This example shows simple use of gpuArray() to use built in GPU functions on MATLAB

matlab-gpu-ex1.m

%Brock Palen [email protected] 1/2014
%To compare against a single core run:
%  hwloc-bind core:0 matlab -r caenfft\(1e7\)

function caenfft(dim)

if ischar(dim)
  dim=str2num(dim);
end

%wakeup the gpu takes ~12 seconds
II = gpuArray.eye(10,'int32');

i=1:dim;
a=2.0*pi*i/10;

disp('CPU fft call')
tic; fft(a); toc

disp(' ')
disp('Time to move array to GPU and run the GPU fft copy results back to host')
tic; 
  Ga=gpuArray(a);
  Gout = fft(Ga);
  out = gather(Gout);
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