matlabparallel-processingspmd

To get debug outputs on client - spmd

I am running a parallelized code courtesy the MATLAB Parallel Computing Toolbox using the spmd command. Specifically, the code is like this:

spmd
    out = function(data,labindex);
end

Now the function involves a library (libsvm) which gives me a trained classifier for each iteration. During the training process, there are several debug messages being printed out to the standard output by the library and somehow these are not appearing on my standard terminal - I think this is because the workers are actually on a cluster and hence the debug messages are not visible to me.

Is there anyway to reroute the debug messages ? (possibly other than writing to a file on a shared disk)

Solution

  • One option may be to try the Parallel Command Window. This opens a new special Command Window with one pane per lab. You'll need to run commands from the "P>>" pmode prompt in this window. More here.