mpihello.cpp

最简单的MPI在C++平台下的程序例子

#include "mpi.h"
#include <stdio.h>
#include <math.h>
#include <windows.h>
int main(int argc,char* argv[])
{
int myid, numprocs;
int namelen;
char processor_name[MPI_MAX_PROCESSOR_NAME];
MPI_Init(&argc,&argv);
MPI_Comm_rank(MPI_COMM_WORLD,&myid);
MPI_Comm_size(MPI_COMM_WORLD,&numprocs);
MPI_Get_processor_name(processor_name,&namelen);
fprintf(stderr,"Hello World! Process %d of %d on %s\n",
myid, numprocs, processor_name);
fprintf(stderr,"Process %d ",myid);
system("pause");
MPI_Finalize();
}