1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "mpi.h"
#include <stdio.h>
#include "mpitest.h"
/*
static char MTEST_Descrip[] = "Use of MPI_BOTTOM in communication";
*/
int main(int argc, char *argv[])
{
int errs = 0, err;
int rank, size, source, dest, len, ii;
MPI_Comm comm;
MPI_Status status;
MPI_Datatype newtype, oldtype;
MPI_Aint disp;
MTest_Init(&argc, &argv);
MPI_Get_address(&ii, &disp);
len = 1;
oldtype = MPI_INT;
MPI_Type_create_struct(1, &len, &disp, &oldtype, &newtype);
MPI_Type_commit(&newtype);
comm = MPI_COMM_WORLD;
MPI_Comm_size(comm, &size);
MPI_Comm_rank(comm, &rank);
if (size < 2) {
errs++;
fprintf(stderr, "This test requires at least two processes\n");
MPI_Abort(MPI_COMM_WORLD, 1);
}
source = 0;
dest = 1;
/* To improve reporting of problems about operations, we
* change the error handler to errors return */
MPI_Comm_set_errhandler(comm, MPI_ERRORS_RETURN);
if (rank == source) {
ii = 2;
err = MPI_Send(MPI_BOTTOM, 1, newtype, dest, 0, comm);
if (err) {
errs++;
MTestPrintError(err);
printf("MPI_Send did not return MPI_SUCCESS\n");
}
} else if (rank == dest) {
ii = -1;
err = MPI_Recv(MPI_BOTTOM, 1, newtype, source, 0, comm, &status);
if (err) {
MTestPrintError(err);
errs++;
printf("MPI_Recv did not return MPI_SUCCESS\n");
}
if (ii != 2) {
errs++;
printf("Received %d but expected %d\n", ii, 2);
}
}
MPI_Comm_set_errhandler(comm, MPI_ERRORS_ARE_FATAL);
MPI_Type_free(&newtype);
MTest_Finalize(errs);
return MTestReturnValue(errs);
}
|
