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Can we use 'parfor' in user defined function?

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Hello, Can we use 'parfor' in used defined functions? I want to use parfor in user defined functions to improve the speed of my code but its not working. Is there any way we can use it?
  3 Comments
Mohsin Shah
Mohsin Shah on 6 Aug 2017
any user define function for example
% code
y=function_name(p);
% called function
function y=function_name(p)
parfor k=1:10
y=p+k
end
end
Walter Roberson
Walter Roberson on 6 Aug 2017
That use of parfor is not permitted because the output would depend upon which iteration ran last. You need either assign to an indexed variable or you need to use a reduction variable (for example totaling the values of the individual iterations)

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Accepted Answer

Walter Roberson
Walter Roberson on 6 Aug 2017
Yes, for sure you can, provided that you have the parallel computing toolbox installed and licensed
  4 Comments
Walter Roberson
Walter Roberson on 7 Aug 2017
function y = function_name(p)
t = 0;
parfor k = 1 : length(p)
t = t + p(k);
end
y = t;
end

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