minimal_mpi_test.cc File Reference

#include <iostream>
#include "mpi.h"

Functions
int	main (int argc, char **argv)
	Minimal mpi self test. More...

Function Documentation

main()

int main	(	int argc	,
		char **	argv
	)

Minimal mpi self test.

{
 
 int myid, numprocs;
 
 MPI_Init(&argc,&argv);
 MPI_Comm_size(MPI_COMM_WORLD,&numprocs);
 MPI_Comm_rank(MPI_COMM_WORLD,&myid);
 
 MPI_Finalize();
 
 // Check that the number of cores is two. This is required because the
 // meshes use have been partitioned for two cores. We can't generate
 // partitionings on the fly for regression testing because the results
 // would change with different partitionings.
 if(numprocs > 2)
  {
   std::cerr << "Too many cores! Mpi self tests must be run on two cores."
             << std::endl;
   return 4;
  }
 
 std::cout << "This worked" << std::endl;
 
 return 0;
} //end of main