how to use openMP in Matlab on Windows 7

Dear All,

I am trying OpenMP by the following simple code

/*ompTest.c */

#include "mex.h"

#include "stdio.h"

#include "stdlib.h"

#include "omp.h"

void mexFunction(

        int nargout,
        mxArray *pargout [ ],
        int nargin,
        const mxArray *pargin  [ ]
        ){
    ptrdiff_t num_Thread = (ptrdiff_t) mxGetScalar(pargin[0]);
    # pragma omp parallel num_threads(numThread){
    int my_rank = omp_get_thread_num();
    int thread_count = omp_get_num_threads();    
    printf("Hello from thread %d of %d\n",my_rank,thread_count);
    }
    return;
}

Then I compile it using

mex CC=gcc CFLAGS="\$CFLAGS -fopenmp" LDFLAGS="\$LDFLAGS -fopenmp" ompTest.c

and also

mex -v ompTest.c COMPFLAGS="$COMPFLAGS /openmp"

as suggested by some people.

However, it always reported

fatal error C1083: Cannot open include file: 'omp.h': No such file or directory

I don't find any people that has the same problem. Anybody can help me on this? I installed SDK 7.1 kit. Do I need to install some more file to have omp.h?

Answer 1

[shaohui chen]

I think you need MSVC professional to utilize openmp.