1 /* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
4 * (C) 2003 by Argonne National Laboratory.
5 * See COPYRIGHT in top-level directory.
13 static char MTEST_Descrip[] = "Test of type resized with non-zero LB";
16 int main(int argc, char *argv[])
19 int rank, size, source, dest;
26 MTest_Init(&argc, &argv);
28 comm = MPI_COMM_WORLD;
30 /* Determine the sender and receiver */
31 MPI_Comm_rank(comm, &rank);
32 MPI_Comm_size(comm, &size);
36 /* Create an type that is "* INT * "
37 * that is, there is a int-sized pad at the beginning of the type,
38 * and the extent is still 3 ints. Note, however, that the INT
39 * is still at displacement 0, so the effective pattern i */
40 MPI_Type_create_resized(MPI_INT, -(int) sizeof(int), 3 * sizeof(int), &newtype);
41 MPI_Type_commit(&newtype);
42 for (count = 1; count < 65000; count = count * 2) {
43 buf = (int *) malloc(count * 3 * sizeof(int));
47 for (i = 0; i < 3 * count; i++)
50 for (i = 0; i < count; i++)
52 MPI_Send(buf, count, newtype, dest, 0, comm);
53 MPI_Send(buf, count, newtype, dest, 1, comm);
55 else if (rank == dest) {
56 MPI_Recv(buf, count, MPI_INT, source, 0, comm, &status);
57 for (i = 0; i < count; i++) {
61 printf("buf[%d] = %d\n", i, buf[i]);
65 for (i = 0; i < count * 3; i++)
67 MPI_Recv(buf, count, newtype, source, 1, comm, &status);
68 for (i = 0; i < count; i++) {
69 if (buf[3 * i] != i) {
72 printf("buf[3*%d] = %d\n", i, buf[i]);
79 MPI_Type_free(&newtype);