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Parallel computing with MATLAB

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Hi all

I know this thread isn't very concern with digital communication, but my main goal is to simulate an OFDM system. So if anyone familiar with parallel computing this is my problem and. I think it is simple. In one of my functions I am using parfor loop and it working well ,improving by 50%.
I defined NumOfWorkers = 8
And launched "matlabpool open 8".
It is still taking a couple of hours , but I can live with that.
Today my friend told me that he have windows server at his work with 32 cores.
So I am thinking of taking this as advantage , but I am not sure how to...
I am thinking on 2 options:
1. NumOfWorkers = ? , matlabpool open ? (Max workers?)
2. To open let's say 4 instances of matlab and then define
NumOfWorkers = ? , matlabpool open ? . Each instance with different parameters(Code Rate, Doppler spread, ITU profile...)
 

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