+++ /dev/null
-/* Copyright (c) 2009-2010, 2013-2014. 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 <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-#include "mpi.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 *) xbt_malloc(size * sizeof(int));
- rb = (int *) xbt_malloc(size * sizeof(int));
-
- for (i = 0; i < size; ++i) {
- sb[i] = rank*size + i;
- rb[i] = 0;
- }
- printf("[%d] sndbuf=[", rank);
- for (i = 0; i < size; i++)
- printf("%d ", sb[i]);
- printf("]\n");
-
- int root=0;
- status = MPI_Reduce(sb, rb, size, MPI_INT, MPI_SUM, root, MPI_COMM_WORLD);
- MPI_Barrier(MPI_COMM_WORLD);
-
- if (rank == root) {
- printf("[%d] rcvbuf=[", rank);
- for (i = 0; i < size; i++)
- printf("%d ", rb[i]);
- printf("]\n");
- if (status != MPI_SUCCESS) {
- printf("all_to_all returned %d\n", status);
- fflush(stdout);
- }
- }
-
-
- printf("[%d] second sndbuf=[", rank);
- for (i = 0; i < 1; i++)
- printf("%d ", sb[i]);
- printf("]\n");
-
- root=size-1;
- status = MPI_Reduce(sb, rb, 1, MPI_INT, MPI_PROD, root, MPI_COMM_WORLD);
- MPI_Barrier(MPI_COMM_WORLD);
-
- if (rank == root) {
- printf("[%d] rcvbuf=[", rank);
- for (i = 0; i < 1; i++)
- printf("%d ", rb[i]);
- printf("]\n");
- if (status != MPI_SUCCESS) {
- printf("all_to_all returned %d\n", status);
- fflush(stdout);
- }
- }
- free(sb);
- free(rb);
- MPI_Finalize();
- return (EXIT_SUCCESS);
-}