1 /* Copyright (c) 2009-2019. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
12 int main(int argc, char *argv[])
18 MPI_Init(&argc, &argv);
19 MPI_Comm_rank(MPI_COMM_WORLD, &rank);
20 MPI_Comm_size(MPI_COMM_WORLD, &size);
23 int* sb = (int *) xbt_malloc(count * sizeof(int));
24 int* rb = (int *) xbt_malloc(count * size * sizeof(int));
26 for (int i = 0; i < count; ++i)
27 sb[i] = rank * count + i;
28 for (int i = 0; i < count * size; ++i)
31 status = MPI_Allgather(NULL, count, MPI_INT, rb, count, MPI_INT, MPI_COMM_WORLD);
32 if(status!=MPI_ERR_BUFFER)
33 printf("MPI_Allgather did not return MPI_ERR_BUFFER for empty sendbuf\n");
34 status = MPI_Allgather(sb, -1, MPI_INT, rb, count, MPI_INT, MPI_COMM_WORLD);
35 if(status!=MPI_ERR_COUNT)
36 printf("MPI_Allgather did not return MPI_ERR_COUNT for -1 sendcount\n");
37 status = MPI_Allgather(sb, count, MPI_DATATYPE_NULL, rb, count, MPI_INT, MPI_COMM_WORLD);
38 if(status!=MPI_ERR_TYPE)
39 printf("MPI_Allgather did not return MPI_ERR_TYPE for MPI_DATATYPE_NULL sendtype\n");
40 status = MPI_Allgather(sb, count, MPI_INT, NULL, count, MPI_INT, MPI_COMM_WORLD);
41 if(status!=MPI_ERR_BUFFER)
42 printf("MPI_Allgather did not return MPI_ERR_BUFFER for empty recvbuf\n");
43 status = MPI_Allgather(sb, count, MPI_INT, rb, -1, MPI_INT, MPI_COMM_WORLD);
44 if(status!=MPI_ERR_COUNT)
45 printf("MPI_Allgather did not return MPI_ERR_COUNT for -1 recvcount\n");
46 status = MPI_Allgather(sb, count, MPI_INT, rb, count, MPI_DATATYPE_NULL, MPI_COMM_WORLD);
47 if(status!=MPI_ERR_TYPE)
48 printf("MPI_Allgather did not return MPI_ERR_TYPE for MPI_DATATYPE_NULL recvtype\n");
49 status = MPI_Allgather(sb, count, MPI_INT, rb, count, MPI_INT, MPI_COMM_NULL);
50 if(status!=MPI_ERR_COMM)
51 printf("MPI_Allgather did not return MPI_ERR_COMM for MPI_COMM_NULL comm\n");
53 printf("[%d] sndbuf=[", rank);
54 for (int i = 0; i < count; i++)
58 status = MPI_Allgather(sb, count, MPI_INT, rb, count, MPI_INT, MPI_COMM_WORLD);
60 printf("[%d] rcvbuf=[", rank);
61 for (int i = 0; i < count * size; i++)
65 if (rank == 0 && status != MPI_SUCCESS) {
66 printf("allgather returned %d\n", status);
72 return (EXIT_SUCCESS);