1 /* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
3 * (C) 2001 by Argonne National Laboratory.
4 * See COPYRIGHT in top-level directory.
11 static int verbose = 0;
14 int double_int_test(void);
16 /* helper functions */
17 int parse_args(int argc, char **argv);
19 int main(int argc, char **argv)
23 MPI_Init(&argc, &argv); /* MPI-1.2 doesn't allow for MPI_Init(0,0) */
24 parse_args(argc, argv);
26 /* To improve reporting of problems about operations, we
27 * change the error handler to errors return */
28 MPI_Comm_set_errhandler(MPI_COMM_WORLD, MPI_ERRORS_RETURN);
30 /* perform some tests */
31 err = double_int_test();
33 fprintf(stderr, "%d errors in double_int test.\n", err);
36 /* print message and exit */
38 fprintf(stderr, "Found %d errors\n", errs);
41 printf(" No Errors\n");
47 /* send a { double, int, double} tuple and receive as a pair of
48 * MPI_DOUBLE_INTs. this should (a) be valid, and (b) result in an
51 int double_int_test(void)
53 int err, errs = 0, count;
67 int blks[3] = { 1, 1, 1 };
68 MPI_Aint disps[3] = { 0, 0, 0 };
69 MPI_Datatype types[3] = { MPI_DOUBLE, MPI_INT, MPI_DOUBLE };
72 MPI_Status recvstatus;
74 /* fill in disps[1..2] with appropriate offset */
75 disps[1] = (MPI_Aint) ((char *) &foo.b - (char *) &foo.a);
76 disps[2] = (MPI_Aint) ((char *) &foo.c - (char *) &foo.a);
78 MPI_Type_create_struct(3, blks, disps, types, &stype);
79 MPI_Type_commit(&stype);
81 err = MPI_Sendrecv((const void *) &foo, 1, stype, 0, 0,
82 (void *) &bar, 2, MPI_DOUBLE_INT, 0, 0, MPI_COMM_SELF, &recvstatus);
83 if (err != MPI_SUCCESS) {
86 fprintf(stderr, "MPI_Sendrecv returned error (%d)\n", err);
90 err = MPI_Get_elements(&recvstatus, MPI_DOUBLE_INT, &count);
91 if (err != MPI_SUCCESS) {
94 fprintf(stderr, "MPI_Get_elements returned error (%d)\n", err);
100 fprintf(stderr, "MPI_Get_elements returned count of %d, should be 3\n", count);
103 MPI_Type_free(&stype);
108 int parse_args(int argc, char **argv)
110 if (argc > 1 && strcmp(argv[1], "-v") == 0)