does parfor support global variables?

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Sampath reddy il 24 Mar 2012

I want to use global variables in the functions run in parallel using parfor. Is it possible?

Edric Ellis il 26 Mar 2012

There are two restrictions.

You cannot place a GLOBAL declaration directly inside a PARFOR loop
The MATLAB workers executing the body of your PARFOR loop are separate MATLAB processes, and the values of global variables are not synchronised

So, while you can use GLOBAL variables within functions called from the body of your PARFOR loop, they probably do not behave as you wish.

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