MATLAB: I have a file 1×200 struct how can I distribute it to the worker (32 worker)

Dear all, I have a file 1×200 struct, I would like to send it to the cluster (parallel computation), how can I distribute it to the worker (32 worker). I can make it one by one, but it is really take very long time.

Thanks in advance.

Best regards, ahmed

Best Answer

Just create the struct normally before the parfor() loop, and inside the parfor() loop, index the struct by the parfor variable. MATLAB will automatically distribute only the needed portion to each worker.

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MATLAB: In parallel processing, are multiple workers used for anything else than parfor loops

Using SVD under a parfor will likely slow the performance of SVD. SVD is inherently multithreaded and make use of multiply cores calling it as it is. Here are a list of function that are inherently multithreaded:

http://www.mathworks.com/support/solutions/en/data/1-4PG4AN/

To comment further on how we could speed up your code, we may need to see more of what you have within the parfor loop.

MATLAB: Use both multi core CPUs

You need to edit the 'local' parallel profile to set the maximum number of workers to 32. See the doc. Once you've done that, you should be able to issue the following command:

parpool('local', 32)

and launch 32 workers.

Note that if MATLAB by default does not consider hyper-threaded cores, as these tend not to perform well for numerically intensive computations. So, you might well find that running 32 workers is actually slower than running 16, depending on the precise nature of your computation.

Best Answer

Related Solutions

MATLAB: In parallel processing, are multiple workers used for anything else than parfor loops

MATLAB: Use both multi core CPUs

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