MATLAB: Problems encountered in Parallel Processing

Question

Dear All,

I tried to use parfor to run my code which is given as follows:

function [A,B] = temp_test(x)
a = [1:2*x]; b = [1:x];
A = zeros(1,x); B = zeros(x,1);
parfor i = 1 : x
    j = x + 1;
    c = func1(a(j),b(i));
    A(i) = c;
    B(i) = a(j) + b(i);
end
function [d] = func1(e,f)
    d = e*f;
end
end

But I was told I can not call func1 like this because it is a nested function. Would anybody tell me how I can fix this problem but I still want to keep the func1 as it is?

Thanks a lot.

Benson

Answer 1

Is there any reason not to simply make func1 a local function?

function [A,B] = temp_test(x)
    a = [1:2*x]; b = [1:x];
    A = zeros(1,x); B = zeros(x,1);
    parfor i = 1 : x
        j = x + 1;
        c = func1(a(j),b(i));
        A(i) = c;
        B(i) = a(j) + b(i);
    end
end
function [d] = func1(e,f)
    d = e*f;
end