-/* Copyright (c) 2009, 2010. The SimGrid Team.
- * All rights reserved. */
-
-/* This program is free software; you can redistribute it and/or modify it
- * under the terms of the license (GNU LGPL) which comes with this package. */
-
-#include "mpi.h"
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-
-#ifndef EXIT_SUCCESS
-#define EXIT_SUCCESS 0
-#define EXIT_FAILURE 1
-#endif
-
-int main(int argc, char *argv[])
-{
- int rank, size;
- int i;
- int *sb;
- int *rb;
- int status;
-
- MPI_Init(&argc, &argv);
- MPI_Comm_rank(MPI_COMM_WORLD, &rank);
- MPI_Comm_size(MPI_COMM_WORLD, &size);
-
- sb = (int *) malloc(size * sizeof(int));
- if (!sb) {
- perror("can't allocate send buffer");
- fflush(stderr);
- MPI_Abort(MPI_COMM_WORLD, EXIT_FAILURE);
- }
- rb = (int *) malloc(size * sizeof(int));
- if (!rb) {
- perror("can't allocate recv buffer");
- fflush(stderr);
- free(sb);
- MPI_Abort(MPI_COMM_WORLD, EXIT_FAILURE);
- }
- for (i = 0; i < size; ++i) {
- sb[i] = rank + 1;
- rb[i] = 0;
- }
- status = MPI_Alltoall(sb, 1, MPI_INT, rb, 1, MPI_INT, MPI_COMM_WORLD);
-
- printf("[%d] rcvbuf=[", rank);
- for (i = 0; i < size; i++)
- printf("%d ", rb[i]);
- printf("]\n");
-
-
- if (rank == 0) {
- if (status != 0) {
- printf("all_to_all returned %d\n", status);
- fflush(stdout);
- }
- }
- free(sb);
- free(rb);
- MPI_Finalize();
- return (EXIT_SUCCESS);
-}