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/*
* You can use safely use mpi4py between multiple
* Py_Initialize()/Py_Finalize() calls ...
* but do not blame me for the memory leaks ;-)
*
*/
#include <mpi.h>
#include <Python.h>
const char helloworld[] = \
"from mpi4py import MPI \n"
"hwmess = 'Hello, World! I am process %d of %d on %s.' \n"
"myrank = MPI.COMM_WORLD.Get_rank() \n"
"nprocs = MPI.COMM_WORLD.Get_size() \n"
"procnm = MPI.Get_processor_name() \n"
"print (hwmess % (myrank, nprocs, procnm)) \n"
"";
int main(int argc, char *argv[])
{
int i,n=5;
MPI_Init(&argc, &argv);
for (i=0; i<n; i++) {
Py_Initialize();
PyRun_SimpleString(helloworld);
Py_Finalize();
}
Py_Initialize();
PyRun_SimpleString(helloworld);
MPI_Finalize();
Py_Finalize();
Py_Initialize();
PyRun_SimpleString("from mpi4py import MPI\n");
Py_Finalize();
return 0;
}
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