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#include <mpi.h>
#include <iostream>
int main(int argc, char** argv) {
// Initialize the MPI environment
MPI_Init(NULL, NULL);
// 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
std::cout << "Hello world from processor " << processor_name
<< ", rank " << world_rank << " out of " << world_size
<< " processors" << std::endl;
// Finalize the MPI environment.
MPI_Finalize();
}
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