Minimize MDCS Data Transfer

Question

Philip 2014-10-27

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/160189-minimize-mdcs-data-transfer

评论： Philip 2014-10-31

I am using MDCS on a Linux cluster. I repeatedly for a parfor loop in the following spirit:

while 
    parfor i=1:n 
        x(i) = a(i,:)*b; 
    end 
end

Here the vector b is used on all cores, every time I call parfor. However, I believe each time I call parfor, b is being sent to all the cores, which slows down the code. How can I repeatedly use parfor with constant data such that I do not have to keep resending the same data each time I call a parfor loop? Thank you.