MPI Hello World
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MPI Hello World
Many parallel jobs are using MPI at the lowest level to manage parallel compute resources.
This is a 'Hello World' program that will test the operation of sending jobs to remote workers.
/*
* Sample MPI "hello world" application in C
*/
- include <stdio.h>
- include "mpi.h"
int main(int argc, char* argv[])
{
int rank, size, len;
char version[MPI_MAX_LIBRARY_VERSION_STRING];
MPI_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &size);
MPI_Get_library_version(version, &len);
printf("Hello, world, I am %d of %d, (%s, %d)\n",
rank, size, version, len);
MPI_Finalize();
return 0;
}