Created
February 26, 2018 16:36
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Simple MPI test program
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#include <mpi.h> | |
#include <stdio.h> | |
int main(int argc, char **argv) | |
{ | |
MPI_Init(&argc, &argv); | |
// Get the number of processes | |
int world_size; | |
MPI_Comm_size(MPI_COMM_WORLD, &world_size); | |
// Get the rank of the process | |
int world_rank; | |
MPI_Comm_rank(MPI_COMM_WORLD, &world_rank); | |
// Get the name of the processor | |
char processor_name[MPI_MAX_PROCESSOR_NAME]; | |
int name_len; | |
MPI_Get_processor_name(processor_name, &name_len); | |
// Print off a hello world message | |
printf("Hello world from processor %s, rank %d" | |
" out of %d processors\n", | |
processor_name, world_rank, world_size); | |
// Finalize the MPI environment. | |
MPI_Finalize(); | |
} |
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