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/*
* Copyright (C) 2010. See COPYRIGHT in top-level directory.
*/
#include <stdio.h>
#include <stdlib.h>
#include <mpi.h>
int main(int argc, char ** argv) {
int rank, nproc;
MPI_Datatype emptyvec;
MPI_Aint lb, ext;
int size;
MPI_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &nproc);
if (rank == 0) printf("Starting MPI datatype test with %d processes\n", nproc);
MPI_Type_vector(0,0,0,MPI_DOUBLE,&emptyvec);
MPI_Type_commit(&emptyvec);
MPI_Type_get_extent(emptyvec, &lb, &ext);
MPI_Type_size(emptyvec, &size);
if (rank == 0) printf("lb = %zu ext = %zu size = %d \n", lb, ext, size);
MPI_Bcast(NULL, 0, emptyvec, 0, MPI_COMM_WORLD);
MPI_Bcast(NULL, 1, emptyvec, 0, MPI_COMM_WORLD);
MPI_Type_free(&emptyvec);
if (rank == 0) printf("Test complete: PASS.\n");
MPI_Finalize();
return 0;
}
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