mpi_Hello

#include <stdio.h>
#include <mpi.h>

int main(int argc, char** argv)
{

        MPI_Init(&argc, &argv);
	int size, rank;
	MPI_Comm_size(MPI_COMM_WORLD, &size);
	MPI_Comm_rank(MPI_COMM_WORLD, &rank);
	//printf("%d, %d ", size, rank);
	int a = 1, b = 666;
	MPI_Status status;
 	if(rank == 0)
	{
	MPI_Send(&a, 1, MPI_INT, 1, 123, MPI_COMM_WORLD);
	}
	if(rank == 1)
	{
	MPI_Recv(&b, 1, MPI_INT, 0, 123, MPI_COMM_WORLD, &status);
	printf("%d ", b);
	}
	MPI_Finalize();
}
/////////////////////////mpicc main.c; mpirun - n2 a.put// gedit .bashrc
// export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/lib64/openmpi/lib"
// ssh имя компа