Run a script that uses multiple MATLAB sessions

Question

How to call a function with simple inputs in several MATLAB sessions automatically?

The manual way to do it would be:

• Open three sessions
• Call

Answer 1

First of all a way must be found to open sessions programatically. Based on this and this it is found you can do it as follows (works on windows as well):

% Opening 3 matlab sessions
for t = 1:3
!matlab &
end

Besides simply opening them, a simple command can also be given

!matlab -r "magic(5)" &

Now, to finally combine this just a small trick remains:

for t = 1:3
   str = ['!matlab -r "magic(' num2str(t) ')" &'];
   eval(str)
end

Note that if you want to use more complicated inputs you can simply save them in a struct and call them with this index by using a wrapper script as called function.

Answer 2

You could try Multicore, which uses several instances of Matlab to do what parfor does by passing information via a common directory. If you can rewrite your code loop to call a function that returns values then Multicore might do what you are looking for.

http://www.mathworks.com/matlabcentral/fileexchange/13775-multicore-parallel-processing-on-multiple-cores