I have four cores, and would like to use all four of them in parallel. To accomplish this, I have attempted to use the "batch" command, combined with a parfor loop as follows. (The example is completely silly, I've tried to strip it down to the most basic components for clarity.)
I have a program called myTest.m as follows:
where sillyProgram is defined as follows (it's silly):
ctr = 0;
fid = fopen(['Silly' num2str(ii)],'a');
while 1 > 0;
ctr = ctr + 1;
I then try to run myTest with the following command:
(I'm running R2013a, hence matlabpool instead of pool.)
The idea was: use three workers in the parfor loop, then exit out of the loop and use the fourth worker to run sillyProgram one more time. But for some baffling reason, the fourth job does not get run. And consequently I'm unable to get all 4 workers running simultaneously.
Am I making a stupid mistake? If not, and this is intended behavior. is there a more intelligent way to use batch, but not waste a a precious worker on the wrapper program, that really does nothing but spawn the real jobs?