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Month: October 2016

Parallel processing of mex files

What to do if you want to speed up Matlab code where a mex file is called inside for-loops? For example, you would like to simulate impulse responses for spherical microphone arrays using the SMIR Generator over a set of Monte Carlo experiments.

If your for-loops can be parallelized and you are working on a Linux machine, enabling compilation with OpenMP may be the answer. Make sure OpenMP is installed on your machine and you are compiling with a Matlab compatible version of gcc. Then compile your mex file in Matlab using the following command instead:

mex smir_generator_loop.cpp CFLAGS="\$CFLAGS -fopenmp" LDFLAGS="\$LDFLAGS -fopenmp"

Good luck!