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
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "mpi.h"
#include "mpitestconf.h"
#ifdef HAVE_IOSTREAM
// Not all C++ compilers have iostream instead of iostream.h
#include <iostream>
#ifdef HAVE_NAMESPACE_STD
// Those that do often need the std namespace; otherwise, a bare "cout"
// is likely to fail to compile
using namespace std;
#endif
#else
#include <iostream.h>
#endif
#include "mpitestcxx.h"
static MPI::Datatype my_datatype;
static int real_count;
void uop(const void *invec, void *inoutvec, int count, const MPI::Datatype & datatype)
{
int i;
if (datatype == my_datatype)
count = real_count;
for (i = 0; i < count; i++) {
if (datatype == MPI::INT)
((int *) inoutvec)[i] = ((int *) invec)[i] + ((int *) inoutvec)[i];
else if (datatype == MPI::DOUBLE || datatype == my_datatype)
((double *) inoutvec)[i] = ((double *) invec)[i] + ((double *) inoutvec)[i];
else
return;
}
}
int main(int argc, char **argv)
{
MPI::Op sumop;
MPI::Intracomm comm = MPI::COMM_WORLD;
int errs = 0;
int size, i, count, root, rank;
int *vin, *vout;
double *dvin, *dvout;
MTest_Init();
sumop.Init(uop, true);
size = comm.Get_size();
rank = comm.Get_rank();
for (count = 1; count < 66000; count = count * 2) {
/* MPI::INT */
vin = new int[count];
vout = new int[count];
for (root = 0; root < size; root++) {
for (i = 0; i < count; i++) {
vin[i] = i;
vout[i] = -1;
}
sumop.Reduce_local(vin, vout, count, MPI::INT);
for (i = 0; i < count; i++) {
if (vout[i] != i - 1) {
errs++;
if (errs < 10)
cerr << "vout[" << i << "] = " << vout[i] << endl;
}
}
}
delete[]vin;
delete[]vout;
/* MPI::DOUBLE */
dvin = new double[count];
dvout = new double[count];
for (root = 0; root < size; root++) {
for (i = 0; i < count; i++) {
dvin[i] = i;
dvout[i] = -1;
}
sumop.Reduce_local(dvin, dvout, count, MPI::DOUBLE);
for (i = 0; i < count; i++) {
if (dvout[i] != i - 1) {
errs++;
if (errs < 10)
cerr << "dvout[" << i << "] = " << dvout[i] << endl;
}
}
}
delete[]dvin;
delete[]dvout;
/* A vector of MPI::DOUBLEs */
dvin = new double[count];
dvout = new double[count];
my_datatype = MPI::DOUBLE.Create_vector(count / 2, 1, 2);
my_datatype.Commit();
real_count = count;
for (root = 0; root < size; root++) {
for (i = 0; i < count; i++) {
dvin[i] = i;
dvout[i] = -1;
}
sumop.Reduce_local(dvin, dvout, 1, my_datatype);
for (i = 0; i < count; i += 2) {
if (dvout[i] != i - 1) {
errs++;
if (errs < 10)
cerr << "dvout[" << i << "] = " << dvout[i] << endl;
}
}
}
delete[]dvin;
delete[]dvout;
my_datatype.Free();
}
sumop.Free();
MTest_Finalize(errs);
return 0;
}
|
