Can we use 'parfor' in user defined function?

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?

[KSSV]

What function you are trying to use parfor?

[Mohsin Shah]

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]

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)

Answer 1

[Walter Roberson]

Yes, for sure you can, provided that you have the parallel computing toolbox installed and licensed

[Mohsin Shah]

Thank you so much.

[Mohsin Shah]

I have parallel computing toolbox installed but still its not working, may be I don't know how to handle parfor in called functions. Would you give me a simple example of a code?

[Walter Roberson]

function y = function_name(p)
  t = 0;
  parfor k = 1 : length(p)
    t = t + p(k);
  end
  y = t;
end

[Mohsin Shah]

Thank you so much