Optomize for gpu

Hi there, I am using a function called leadlag supplied by mathworks with a tutorial on algorithmic trading and want to optomize this using the gpu (Arrayfun).

The code I have calling the function is:

for n = 1:100

    parfor m = n:100

        [~,~,sh(n,m)] = leadlag(Close,n,m,annualScaling, 0.00006);

    end

end

- How can I optomize this so the loops are faster in the cuda enabaled gpu! Hint: Arrayfun

Thanks