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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "mpi.h"
#include <stdio.h>
#include "mpitest.h"
/*
* This test checks to see if we can create a simple datatype
* made from many contiguous copies of a single struct. The
* struct is built with monotone decreasing displacements to
* avoid any struct->contig optimizations.
*/
int main(int argc, char **argv)
{
int blocklens[8], psize, i, rank;
MPI_Aint displs[8];
MPI_Datatype oldtypes[8];
MPI_Datatype ntype1, ntype2;
MTest_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
for (i = 0; i < 8; i++) {
blocklens[i] = 1;
displs[i] = (7 - i) * sizeof(long);
oldtypes[i] = MPI_LONG;
}
MPI_Type_create_struct(8, blocklens, displs, oldtypes, &ntype1);
MPI_Type_contiguous(65536, ntype1, &ntype2);
MPI_Type_commit(&ntype2);
MPI_Pack_size(2, ntype2, MPI_COMM_WORLD, &psize);
MPI_Type_free(&ntype2);
MPI_Type_free(&ntype1);
MTest_Finalize(0);
return 0;
}
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