How to distinctly assign job and get the result of each worker using "parfor"?

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Bill Masters 2020-5-6

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评论： Bill Masters 2020-5-7

Hello,

I'm using parallel computing toolbox in order to parallelize my computation. there is a need for assigning an identical job with different data to each worker and after the computation of workers is done, I need to distinctly get each woker's result in the client process and use each of them for another purpose. how can I do this?!

thanks

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Walter Roberson 2020-5-7

parfeval() or batch()

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Edric Ellis 2020-5-7

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This sounds more like a job for spmd . Read more about that here: https://www.mathworks.com/help/parallel-computing/spmd.html . Here's an extremely simple example:

spmd
    myOutput = 2 * labindex; % labindex has a different value on each worker
end
myOutput{3} % gets the value from the 3rd worker

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Bill Masters 2020-5-7

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suppose that I have 4 workers and 4 input data as well,

conceptually I need the work be done as below, but I don't know how to organize it:

spmd
    myOutput=func(data1,data2,data3,data4);
     %func is a function defined before, to be done seperately
     % by each worker with their own data in parallel
end
myOutput{1}
myOutput{2}
...