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
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
|
/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "mpi.h"
#include <stdio.h>
/* The next is for isprint */
#include <ctype.h>
#include "mpitest.h"
int main(int argc, char *argv[])
{
struct a {
int i;
char c;
} s[10], s1[10];
int j;
int errs = 0;
int rank, size, tsize;
MPI_Aint text, tmp_lb;
int blens[2];
MPI_Aint disps[2];
MPI_Datatype bases[2];
MPI_Datatype str, con;
MPI_Status status;
MTest_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &size);
for (j = 0; j < 10; j++) {
s[j].i = j + rank;
s[j].c = j + rank + 'a';
}
blens[0] = blens[1] = 1;
disps[0] = 0;
disps[1] = sizeof(int);
bases[0] = MPI_INT;
bases[1] = MPI_CHAR;
MPI_Type_create_struct(2, blens, disps, bases, &str);
MPI_Type_commit(&str);
MPI_Type_contiguous(10, str, &con);
MPI_Type_commit(&con);
MPI_Type_size(con, &tsize);
MPI_Type_get_extent(con, &tmp_lb, &text);
MTestPrintfMsg(0, "Size of MPI array is %d, extent is %d\n", tsize, text);
/* The following block of code is only for verbose-level output */
{
void *p1, *p2;
p1 = s;
p2 = s + 10;
MTestPrintfMsg(0,
"C array starts at %p and ends at %p for a length of %d\n",
s, &(s[9].c), (char *) p2 - (char *) p1);
}
MPI_Type_get_extent(str, &tmp_lb, &text);
MPI_Type_size(str, &tsize);
MTestPrintfMsg(0, "Size of MPI struct is %d, extent is %d\n", tsize, (int) text);
MTestPrintfMsg(0, "Size of C struct is %d\n", sizeof(struct a));
if (text != sizeof(struct a)) {
fprintf(stderr,
"Extent of struct a (%d) does not match sizeof (%d)\n",
(int) text, (int) sizeof(struct a));
errs++;
}
MPI_Send(s, 1, con, rank ^ 1, 0, MPI_COMM_WORLD);
MPI_Recv(s1, 1, con, rank ^ 1, 0, MPI_COMM_WORLD, &status);
for (j = 0; j < 10; j++) {
MTestPrintfMsg(0, "%d Sent: %d %c, Got: %d %c\n", rank, s[j].i, s[j].c, s1[j].i, s1[j].c);
if (s1[j].i != j + status.MPI_SOURCE) {
errs++;
fprintf(stderr, "Got s[%d].i = %d; expected %d\n", j, s1[j].i, j + status.MPI_SOURCE);
}
if (s1[j].c != (char) ('a' + j + status.MPI_SOURCE)) {
errs++;
/* If the character is not a printing character,
* this can generate a file that diff, for example,
* believes is a binary file */
if (isprint((int) (s1[j].c))) {
fprintf(stderr, "Got s[%d].c = %c; expected %c\n",
j, s1[j].c, j + status.MPI_SOURCE + 'a');
} else {
fprintf(stderr, "Got s[%d].c = %x; expected %c\n",
j, (int) s1[j].c, j + status.MPI_SOURCE + 'a');
}
}
}
MPI_Type_free(&str);
MPI_Type_free(&con);
MTest_Finalize(errs);
return MTestReturnValue(errs);
}
|
