Genetic Algorithm parallel computing, why numlabs is still equal to one?

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Giacomo Notaro
Giacomo Notaro 2020-2-10
评论： Tianshu Bao 2020-6-20
Hi all,
I'm implementing a code in which I need to use parallel computing.
For some parts of the code I can use "parfor" and "spmd" regions, but when I start using genetic algoritm (ga) some problems come out.
I set "UseParallel',true" or "UseParallel','always'" in the optimoptions and still the number of workers implied is one.
I can see this from the numlabs or the labindex variables.
Moreover, the time spent with parallel computing on is equal or greater than the not parallelized code, so I don't understand what's happening inside.

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