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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include <stdio.h>
#include <stdlib.h>
#include "mpi.h"
#include "mpitest.h"
#include "mpicolltest.h"
/* Very simple test that MPI_Scatter handled mismatched lengths.
Extended from bcastlength.c
*/
int verbose = 0;
#define COUNT 10
int main(int argc, char *argv[])
{
int buf[COUNT];
int *recvbuf;
int ierr, errs = 0;
int rank, num_ranks;
char str[MPI_MAX_ERROR_STRING + 1];
int slen;
MTEST_VG_MEM_INIT(buf, COUNT * sizeof(int));
MTest_Init(&argc, &argv);
MPI_Comm_set_errhandler(MPI_COMM_WORLD, MPI_ERRORS_RETURN);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &num_ranks);
recvbuf = (int *) (malloc(sizeof(int) * COUNT * num_ranks));
if (rank == 0) {
ierr = MTest_Alltoall(buf, COUNT * 2, MPI_INT, recvbuf, COUNT, MPI_INT, MPI_COMM_WORLD);
} else {
ierr = MTest_Alltoall(buf, COUNT, MPI_INT, recvbuf, COUNT, MPI_INT, MPI_COMM_WORLD);
}
if (ierr == MPI_SUCCESS) {
if (rank == 0) {
/* The root process may not detect that a too-short buffer
* was provided by the non-root processes, but those processes
* should detect this. */
errs++;
printf("Did not detect mismatched length (short) on process %d\n", rank);
}
} else {
if (verbose) {
MPI_Error_string(ierr, str, &slen);
printf("Found expected error; message is: %s\n", str);
}
}
MPI_Comm_set_errhandler(MPI_COMM_WORLD, MPI_ERRORS_ARE_FATAL);
free(recvbuf);
MTest_Finalize(errs);
return MTestReturnValue(errs);
}
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