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
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
|
// Copyright (C) 2005, 2006 Douglas Gregor.
// Use, modification and distribution is subject to the Boost Software
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#include <boost/mpi/communicator.hpp>
#include <boost/mpi/group.hpp>
#include <boost/mpi/intercommunicator.hpp>
#include <boost/mpi/graph_communicator.hpp>
#include <boost/mpi/skeleton_and_content.hpp>
#include <boost/mpi/detail/point_to_point.hpp>
namespace boost { namespace mpi {
/***************************************************************************
* status *
***************************************************************************/
bool status::cancelled() const
{
int flag = 0;
BOOST_MPI_CHECK_RESULT(MPI_Test_cancelled, (&m_status, &flag));
return flag != 0;
}
/***************************************************************************
* communicator *
***************************************************************************/
communicator::communicator()
{
comm_ptr.reset(new MPI_Comm(MPI_COMM_WORLD));
}
communicator::communicator(const MPI_Comm& comm, comm_create_kind kind)
{
if (comm == MPI_COMM_NULL)
/* MPI_COMM_NULL indicates that the communicator is not usable. */
return;
switch (kind) {
case comm_duplicate:
{
MPI_Comm newcomm;
BOOST_MPI_CHECK_RESULT(MPI_Comm_dup, (comm, &newcomm));
comm_ptr.reset(new MPI_Comm(newcomm), comm_free());
MPI_Errhandler_set(newcomm, MPI_ERRORS_RETURN);
break;
}
case comm_take_ownership:
comm_ptr.reset(new MPI_Comm(comm), comm_free());
break;
case comm_attach:
comm_ptr.reset(new MPI_Comm(comm));
break;
}
}
communicator::communicator(const communicator& comm,
const boost::mpi::group& subgroup)
{
MPI_Comm newcomm;
BOOST_MPI_CHECK_RESULT(MPI_Comm_create,
((MPI_Comm)comm, (MPI_Group)subgroup, &newcomm));
if(newcomm != MPI_COMM_NULL)
comm_ptr.reset(new MPI_Comm(newcomm), comm_free());
}
int communicator::size() const
{
int size_;
BOOST_MPI_CHECK_RESULT(MPI_Comm_size, (MPI_Comm(*this), &size_));
return size_;
}
int communicator::rank() const
{
int rank_;
BOOST_MPI_CHECK_RESULT(MPI_Comm_rank, (MPI_Comm(*this), &rank_));
return rank_;
}
boost::mpi::group communicator::group() const
{
MPI_Group gr;
BOOST_MPI_CHECK_RESULT(MPI_Comm_group, ((MPI_Comm)*this, &gr));
return boost::mpi::group(gr, /*adopt=*/true);
}
void communicator::send(int dest, int tag) const
{
BOOST_MPI_CHECK_RESULT(MPI_Send,
(MPI_BOTTOM, 0, MPI_PACKED,
dest, tag, MPI_Comm(*this)));
}
status communicator::recv(int source, int tag) const
{
status stat;
BOOST_MPI_CHECK_RESULT(MPI_Recv,
(MPI_BOTTOM, 0, MPI_PACKED,
source, tag, MPI_Comm(*this), &stat.m_status));
return stat;
}
optional<status> communicator::iprobe(int source, int tag) const
{
typedef optional<status> result_type;
status stat;
int flag;
BOOST_MPI_CHECK_RESULT(MPI_Iprobe,
(source, tag, MPI_Comm(*this), &flag,
&stat.m_status));
if (flag) return stat;
else return result_type();
}
status communicator::probe(int source, int tag) const
{
status stat;
BOOST_MPI_CHECK_RESULT(MPI_Probe,
(source, tag, MPI_Comm(*this), &stat.m_status));
return stat;
}
void (communicator::barrier)() const
{
BOOST_MPI_CHECK_RESULT(MPI_Barrier, (MPI_Comm(*this)));
}
communicator::operator MPI_Comm() const
{
if (comm_ptr) return *comm_ptr;
else return MPI_COMM_NULL;
}
communicator communicator::split(int color) const
{
return split(color, rank());
}
communicator communicator::split(int color, int key) const
{
MPI_Comm newcomm;
BOOST_MPI_CHECK_RESULT(MPI_Comm_split,
(MPI_Comm(*this), color, key, &newcomm));
return communicator(newcomm, comm_take_ownership);
}
optional<intercommunicator> communicator::as_intercommunicator() const
{
int flag;
BOOST_MPI_CHECK_RESULT(MPI_Comm_test_inter, ((MPI_Comm)*this, &flag));
if (flag)
return intercommunicator(comm_ptr);
else
return optional<intercommunicator>();
}
optional<graph_communicator> communicator::as_graph_communicator() const
{
int status;
BOOST_MPI_CHECK_RESULT(MPI_Topo_test, ((MPI_Comm)*this, &status));
if (status == MPI_GRAPH)
return graph_communicator(comm_ptr);
else
return optional<graph_communicator>();
}
bool communicator::has_cartesian_topology() const
{
int status;
BOOST_MPI_CHECK_RESULT(MPI_Topo_test, ((MPI_Comm)*this, &status));
return status == MPI_CART;
}
void communicator::abort(int errcode) const
{
BOOST_MPI_CHECK_RESULT(MPI_Abort, (MPI_Comm(*this), errcode));
}
/*************************************************************
* archived send/recv *
*************************************************************/
template<>
void
communicator::send<packed_oarchive>(int dest, int tag,
const packed_oarchive& ar) const
{
detail::packed_archive_send(MPI_Comm(*this), dest, tag, ar);
}
template<>
void
communicator::send<packed_skeleton_oarchive>
(int dest, int tag, const packed_skeleton_oarchive& ar) const
{
this->send(dest, tag, ar.get_skeleton());
}
template<>
void communicator::send<content>(int dest, int tag, const content& c) const
{
BOOST_MPI_CHECK_RESULT(MPI_Send,
(MPI_BOTTOM, 1, c.get_mpi_datatype(),
dest, tag, MPI_Comm(*this)));
}
template<>
status
communicator::recv<packed_iarchive>(int source, int tag,
packed_iarchive& ar) const
{
status stat;
detail::packed_archive_recv(MPI_Comm(*this), source, tag, ar,
stat.m_status);
return stat;
}
template<>
status
communicator::recv<packed_skeleton_iarchive>
(int source, int tag, packed_skeleton_iarchive& ar) const
{
return this->recv(source, tag, ar.get_skeleton());
}
template<>
status
communicator::recv<const content>(int source, int tag, const content& c) const
{
status stat;
BOOST_MPI_CHECK_RESULT(MPI_Recv,
(MPI_BOTTOM, 1, c.get_mpi_datatype(),
source, tag, MPI_Comm(*this), &stat.m_status));
return stat;
}
/*************************************************************
* non-blocking send/recv *
*************************************************************/
template<>
request
communicator::isend<packed_oarchive>(int dest, int tag,
const packed_oarchive& ar) const
{
request req;
detail::packed_archive_isend(MPI_Comm(*this), dest, tag, ar,
&req.m_requests[0] ,2);
return req;
}
template<>
request
communicator::isend<packed_skeleton_oarchive>
(int dest, int tag, const packed_skeleton_oarchive& ar) const
{
return this->isend(dest, tag, ar.get_skeleton());
}
template<>
request communicator::isend<content>(int dest, int tag, const content& c) const
{
request req;
BOOST_MPI_CHECK_RESULT(MPI_Isend,
(MPI_BOTTOM, 1, c.get_mpi_datatype(),
dest, tag, MPI_Comm(*this), &req.m_requests[0]));
return req;
}
request communicator::isend(int dest, int tag) const
{
request req;
BOOST_MPI_CHECK_RESULT(MPI_Isend,
(MPI_BOTTOM, 0, MPI_PACKED,
dest, tag, MPI_Comm(*this), &req.m_requests[0]));
return req;
}
template<>
request
communicator::irecv<packed_skeleton_iarchive>
(int source, int tag, packed_skeleton_iarchive& ar) const
{
return this->irecv(source, tag, ar.get_skeleton());
}
template<>
request
communicator::irecv<const content>(int source, int tag,
const content& c) const
{
request req;
BOOST_MPI_CHECK_RESULT(MPI_Irecv,
(MPI_BOTTOM, 1, c.get_mpi_datatype(),
source, tag, MPI_Comm(*this), &req.m_requests[0]));
return req;
}
request communicator::irecv(int source, int tag) const
{
request req;
BOOST_MPI_CHECK_RESULT(MPI_Irecv,
(MPI_BOTTOM, 0, MPI_PACKED,
source, tag, MPI_Comm(*this), &req.m_requests[0]));
return req;
}
bool operator==(const communicator& comm1, const communicator& comm2)
{
int result;
BOOST_MPI_CHECK_RESULT(MPI_Comm_compare,
((MPI_Comm)comm1, (MPI_Comm)comm2, &result));
return result == MPI_IDENT;
}
} } // end namespace boost::mpi
|
