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Examples of GPU do not work

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Peter Harrington
Peter Harrington on 22 Apr 2023
Answered: Joss Knight on 22 Apr 2023
I have the Parallel Processing toolbox.
A5 = parallel.gpu.GPUArray.rand(3000,3000);
B5 = fft(A5);
B5 = gather(B5);
time5 = toc;
>> A5 = parallel.gpu.GPUArray.rand(3000,3000);
Unable to resolve the name 'parallel.gpu.GPUArray.rand'.
One other demo used eigs, but I see now it is eig that works with the GPUArray object.
Any clues why this MathWorks Demo does not work?
In addition when I try to list MATLAB funtions that support GPU computations Google chrome crashes?
Thanks in advance,

Answers (2)

Joss Knight
Joss Knight on 22 Apr 2023
This isn't a demo it's a blog from 11 years ago, and unfortunately it's using syntax that was removed from MATLAB 9 years ago. It was substituted for the simpler gpuArray.rand and then superseded by rand(..., 'gpuArray').

Walter Roberson
Walter Roberson on 22 Apr 2023
You would use the first of those if you specifically wanted to use random number streams; most of the time invoking rand() with "gpuArray" option is good-enough for most people.





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