minimal_mpi_variablenp_test.cc File Reference

#include <iostream>
#include <fstream>
#include <sstream>
#include <string>
#include "mpi.h"

Functions
int	main (int argc, char **argv)
	Minimal mpi self test for varying number of processors. More...

Function Documentation

main()

int main	(	int argc	,
		char **	argv
	)

Minimal mpi self test for varying number of processors.

{
 
 int myid, numprocs;
 
 MPI_Init(&argc,&argv);
 MPI_Comm_size(MPI_COMM_WORLD,&numprocs);
 MPI_Comm_rank(MPI_COMM_WORLD,&myid);
 
 std::stringstream filename_stringstream;
 filename_stringstream 
   << "mpi_seltest_np" <<numprocs << "rank" << myid;
 
 std::ofstream myfile;
 myfile.open(filename_stringstream.str().c_str());
 
 myfile << "This worked" << std::endl;
 myfile.close();
 
 MPI_Finalize();
 
 return 0;
} //end of main