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
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "mpi.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mpitest.h"
#define IF_VERBOSE(a) if (verbose) { printf a ; fflush(stdout); }
void check_error(int, const char *);
void check_error(int error, const char *fcname)
{
char err_string[MPI_MAX_ERROR_STRING] = "";
int length;
if (error != MPI_SUCCESS) {
MPI_Error_string(error, err_string, &length);
printf("%s failed: %s\n", fcname, err_string);
fflush(stdout);
MPI_Abort(MPI_COMM_WORLD, error);
}
}
int main(int argc, char *argv[])
{
int error;
int rank, size;
char *argv1[2] = { (char *) "connector", NULL };
char *argv2[2] = { (char *) "acceptor", NULL };
MPI_Comm comm_connector, comm_acceptor, comm_parent, comm;
char port[MPI_MAX_PORT_NAME];
MPI_Status status;
MPI_Info spawn_path = MPI_INFO_NULL;
int verbose = 0;
int can_spawn, errs = 0;
if (getenv("MPITEST_VERBOSE")) {
verbose = 1;
}
IF_VERBOSE(("init.\n"));
error = MPI_Init(&argc, &argv);
check_error(error, "MPI_Init");
errs += MTestSpawnPossible(&can_spawn);
if (!can_spawn) {
if (errs)
printf(" Found %d errors\n", errs);
else
printf(" No Errors\n");
fflush(stdout);
} else {
/* To improve reporting of problems about operations, we
* change the error handler to errors return */
MPI_Comm_set_errhandler(MPI_COMM_WORLD, MPI_ERRORS_RETURN);
MPI_Comm_set_errhandler(MPI_COMM_SELF, MPI_ERRORS_RETURN);
IF_VERBOSE(("size.\n"));
error = MPI_Comm_size(MPI_COMM_WORLD, &size);
check_error(error, "MPI_Comm_size");
IF_VERBOSE(("rank.\n"));
error = MPI_Comm_rank(MPI_COMM_WORLD, &rank);
check_error(error, "MPI_Comm_rank");
if (argc == 1) {
/* Make sure that the current directory is in the path.
* Not all implementations may honor or understand this, but
* it is highly recommended as it gives users a clean way
* to specify the location of the executable without
* specifying a particular directory format (e.g., this
* should work with both Windows and Unix implementations) */
error = MPI_Info_create(&spawn_path);
check_error(error, "MPI_Info_create");
error = MPI_Info_set(spawn_path, (char *) "path", (char *) ".");
check_error(error, "MPI_Info_set");
IF_VERBOSE(("spawn connector.\n"));
error = MPI_Comm_spawn((char *) "spaconacc", argv1, 1, spawn_path, 0,
MPI_COMM_SELF, &comm_connector, MPI_ERRCODES_IGNORE);
check_error(error, "MPI_Comm_spawn");
IF_VERBOSE(("spawn acceptor.\n"));
error = MPI_Comm_spawn((char *) "spaconacc", argv2, 1, spawn_path, 0,
MPI_COMM_SELF, &comm_acceptor, MPI_ERRCODES_IGNORE);
check_error(error, "MPI_Comm_spawn");
error = MPI_Info_free(&spawn_path);
check_error(error, "MPI_Info_free");
MPI_Comm_set_errhandler(comm_connector, MPI_ERRORS_RETURN);
MPI_Comm_set_errhandler(comm_acceptor, MPI_ERRORS_RETURN);
IF_VERBOSE(("recv port.\n"));
error = MPI_Recv(port, MPI_MAX_PORT_NAME, MPI_CHAR, 0, 0, comm_acceptor, &status);
check_error(error, "MPI_Recv");
IF_VERBOSE(("send port.\n"));
error = MPI_Send(port, MPI_MAX_PORT_NAME, MPI_CHAR, 0, 0, comm_connector);
check_error(error, "MPI_Send");
IF_VERBOSE(("barrier acceptor.\n"));
error = MPI_Barrier(comm_acceptor);
check_error(error, "MPI_Barrier");
IF_VERBOSE(("barrier connector.\n"));
error = MPI_Barrier(comm_connector);
check_error(error, "MPI_Barrier");
error = MPI_Comm_free(&comm_acceptor);
check_error(error, "MPI_Comm_free");
error = MPI_Comm_free(&comm_connector);
check_error(error, "MPI_Comm_free");
printf(" No Errors\n");
} else if ((argc == 2) && (strcmp(argv[1], "acceptor") == 0)) {
IF_VERBOSE(("get_parent.\n"));
error = MPI_Comm_get_parent(&comm_parent);
check_error(error, "MPI_Comm_get_parent");
if (comm_parent == MPI_COMM_NULL) {
printf("acceptor's parent is NULL.\n");
fflush(stdout);
MPI_Abort(MPI_COMM_WORLD, -1);
}
IF_VERBOSE(("open_port.\n"));
error = MPI_Open_port(MPI_INFO_NULL, port);
check_error(error, "MPI_Open_port");
MPI_Comm_set_errhandler(comm_parent, MPI_ERRORS_RETURN);
IF_VERBOSE(("0: opened port: <%s>\n", port));
IF_VERBOSE(("send.\n"));
error = MPI_Send(port, MPI_MAX_PORT_NAME, MPI_CHAR, 0, 0, comm_parent);
check_error(error, "MPI_Send");
IF_VERBOSE(("accept.\n"));
error = MPI_Comm_accept(port, MPI_INFO_NULL, 0, MPI_COMM_SELF, &comm);
check_error(error, "MPI_Comm_accept");
IF_VERBOSE(("close_port.\n"));
error = MPI_Close_port(port);
check_error(error, "MPI_Close_port");
IF_VERBOSE(("disconnect.\n"));
error = MPI_Comm_disconnect(&comm);
check_error(error, "MPI_Comm_disconnect");
IF_VERBOSE(("barrier.\n"));
error = MPI_Barrier(comm_parent);
check_error(error, "MPI_Barrier");
MPI_Comm_free(&comm_parent);
} else if ((argc == 2) && (strcmp(argv[1], "connector") == 0)) {
IF_VERBOSE(("get_parent.\n"));
error = MPI_Comm_get_parent(&comm_parent);
check_error(error, "MPI_Comm_get_parent");
if (comm_parent == MPI_COMM_NULL) {
printf("acceptor's parent is NULL.\n");
fflush(stdout);
MPI_Abort(MPI_COMM_WORLD, -1);
}
MPI_Comm_set_errhandler(comm_parent, MPI_ERRORS_RETURN);
IF_VERBOSE(("recv.\n"));
error = MPI_Recv(port, MPI_MAX_PORT_NAME, MPI_CHAR, 0, 0, comm_parent, &status);
check_error(error, "MPI_Recv");
IF_VERBOSE(("1: received port: <%s>\n", port));
IF_VERBOSE(("connect.\n"));
error = MPI_Comm_connect(port, MPI_INFO_NULL, 0, MPI_COMM_SELF, &comm);
check_error(error, "MPI_Comm_connect");
MPI_Comm_set_errhandler(comm, MPI_ERRORS_RETURN);
IF_VERBOSE(("disconnect.\n"));
error = MPI_Comm_disconnect(&comm);
check_error(error, "MPI_Comm_disconnect");
IF_VERBOSE(("barrier.\n"));
error = MPI_Barrier(comm_parent);
check_error(error, "MPI_Barrier");
MPI_Comm_free(&comm_parent);
} else {
printf("invalid command line.\n");
fflush(stdout);
{
int i;
for (i = 0; i < argc; i++) {
printf("argv[%d] = <%s>\n", i, argv[i]);
}
}
fflush(stdout);
MPI_Abort(MPI_COMM_WORLD, -2);
}
}
MPI_Finalize();
return MTestReturnValue(errs);
}
|
