Calling sets of INPUTS in a FUNCTION in a PARFOR loop

Hu guys!

I have here a function that runs for 40 mins and I would like to run it for 3 different sets of inputs, or a 2 hours waiting time...

output1 = function(graph1, Matrix11, Matrix12) %40 mins
output2 = function(graph2, Matrix21, Matrix22) %40 mins
output3 = function(graph3, Matrix31, Matrix32) %40 mins

I know that I can divide this time if I use multiple cores, one for each function.

So, my initial idea was to creat a variable that stores the 3 sets of inputs and to call them in a parfor loop (the output is a vector):

    input(1) = graph1, Matrix11, Matrix12
    input(2) = graph2, Matrix21, Matrix22
    input(3) = graph3, Matrix31, Matrix32

    parfor 1 = 1:3
        output(:,i) = function(input(i))
    end
    

But I don't really know how to do that. Moreover, storing graphs and matrices in a same variable isn't possible (I think).

Can someone help me please? :)

[Jan]

The trick is to use arrays instead of hiding the indices in the names of the variables. See TUTORIAL: Why and how to avoid Eval

Answer 1

[Edric Ellis]

Did you try something like this:

graphs = {graph1, graph2, graph3};
Matrix1s = {Matrix11, Matrix21, Matrix31};
Matrix2s = {Matrix12, Matrix22, Matrix32};
parfor i = 1:3
    output{i} = function(graphs{i}, Matrix1s{i}, Matrix2s{i});
end

[Habib]

Perfect! Thanks