What is going on when I call a function that uses parfor loop inside of a parfor loop in my main script?

I have a parfor loop in my main script, and in it I am calling a function that itself uses a parfor loop. To my suprise, everything still works. However, aren't I technically using an embedded parfor loop? I am curious why it is working. I should add I am not super versed with the parallel processing toolkit, I am using it to speed up some processes. I'd appreciate any information, thank you. Also, I am using R2022a.

parfor i = 1:numAgents
        d = MaxDist(g_,g_bar);
        ...
end

Answer 1

[Raymond Norris]

The outer parfor-loop is parallelized and the inner parfor-loop is run as a for-loop.