GPU and CPU code: How to do?
I would like to share my MATLAB project with others that does not have any GPU card in your computers, but I want to use the GPU power in my computer.
How can I write ONLY ONE MATLAB code that can be run with and without GPU system?
My main GPU commands are:
- parfor
- GPUarray
In C/C++ language, we can write a pre-processor that can be this “magic shift”. Is possible to do this in MATLAB?
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Depending on how your codes are structured, try to decide early on whether to use gpuArray or regular array. Most Matlab built-in functions will automatically determine and use gpuArrays.
function Output = main(Input)
%Decide early to use gpuArray
if gpuDeviceCount > 0
Input = gpuArray(Input);
end%Use functions that support either gpuArray or regular arrays as inputs
plot(Input)
Input = myCustonFcn(Input) %custom function that allows gpuArray inputs%Return as a regular array when done
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