1 /* Copyright (c) 2009-2019. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
13 int main(int argc, char *argv[])
20 MPI_Init(&argc, &argv);
21 MPI_Comm_rank(MPI_COMM_WORLD, &rank);
22 MPI_Comm_size(MPI_COMM_WORLD, &size);
24 int* sb = (int *) xbt_malloc(size * sizeof(int) * 2);
25 int* rb = (int *) xbt_malloc(size * sizeof(int) * 2);
27 for (i = 0; i < size; ++i) {
28 sb[i] = rank*size + i;
32 printf("[%d] sndbuf=[", rank);
33 for (i = 0; i < size; i++)
38 status = MPI_Alltoall(NULL, count, MPI_INT, rb, count, MPI_INT, MPI_COMM_WORLD);
39 if(status!=MPI_ERR_BUFFER)
40 printf("MPI_Alltoall did not return MPI_ERR_BUFFER for empty sendbuf\n");
41 status = MPI_Alltoall(sb, -1, MPI_INT, rb, count, MPI_INT, MPI_COMM_WORLD);
42 if(status!=MPI_ERR_COUNT)
43 printf("MPI_Alltoall did not return MPI_ERR_COUNT for -1 sendcount\n");
44 status = MPI_Alltoall(sb, count, MPI_DATATYPE_NULL, rb, count, MPI_INT, MPI_COMM_WORLD);
45 if(status!=MPI_ERR_TYPE)
46 printf("MPI_Alltoall did not return MPI_ERR_TYPE for MPI_DATATYPE_NULL sendtype\n");
47 status = MPI_Alltoall(sb, count, MPI_INT, NULL, count, MPI_INT, MPI_COMM_WORLD);
48 if(status!=MPI_ERR_BUFFER)
49 printf("MPI_Alltoall did not return MPI_ERR_BUFFER for empty recvbuf\n");
50 status = MPI_Alltoall(sb, count, MPI_INT, rb, -1, MPI_INT, MPI_COMM_WORLD);
51 if(status!=MPI_ERR_COUNT)
52 printf("MPI_Alltoall did not return MPI_ERR_COUNT for -1 recvcount\n");
53 status = MPI_Alltoall(sb, count, MPI_INT, rb, count, MPI_DATATYPE_NULL, MPI_COMM_WORLD);
54 if(status!=MPI_ERR_TYPE)
55 printf("MPI_Alltoall did not return MPI_ERR_TYPE for MPI_DATATYPE_NULL recvtype\n");
56 status = MPI_Alltoall(sb, count, MPI_INT, rb, count, MPI_INT, MPI_COMM_NULL);
57 if(status!=MPI_ERR_COMM)
58 printf("MPI_Alltoall did not return MPI_ERR_COMM for MPI_COMM_NULL comm\n");
60 status = MPI_Alltoall(sb, count, MPI_INT, rb, count, MPI_INT, MPI_COMM_WORLD);
62 printf("[%d] rcvbuf=[", rank);
63 for (i = 0; i < size; i++)
67 if (rank == 0 && status != MPI_SUCCESS) {
68 printf("all_to_all returned %d\n", status);
74 return (EXIT_SUCCESS);