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
|
cdef class Request:
"""
Request
"""
def __cinit__(self):
self.ob_mpi = MPI_REQUEST_NULL
def __dealloc__(self):
if not (self.flags & PyMPI_OWNED): return
CHKERR( _del_Request(&self.ob_mpi) )
def __richcmp__(self, other, int op):
if not isinstance(self, Request): return NotImplemented
if not isinstance(other, Request): return NotImplemented
cdef Request s = self, o = other
if op == 2: return (s.ob_mpi == o.ob_mpi)
elif op == 3: return (s.ob_mpi != o.ob_mpi)
else: raise TypeError(mpistr("only '==' and '!='"))
def __nonzero__(self):
return self.ob_mpi != MPI_REQUEST_NULL
# Completion Operations
# ---------------------
def Wait(self, Status status=None):
"""
Wait for an MPI send or receive to complete.
"""
cdef MPI_Status *statusp = _arg_Status(status)
with nogil: CHKERR( MPI_Wait(&self.ob_mpi, statusp) )
def Test(self, Status status=None):
"""
Test for the completion of a send or receive.
"""
cdef bint flag = 0
cdef MPI_Status *statusp = _arg_Status(status)
with nogil: CHKERR( MPI_Test(&self.ob_mpi, &flag, statusp) )
return flag
def Free(self):
"""
Free a communication request
"""
with nogil: CHKERR( MPI_Request_free(&self.ob_mpi) )
def Get_status(self, Status status=None):
"""
Non-destructive test for the
completion of a request
"""
cdef bint flag = 0
cdef MPI_Status *statusp = _arg_Status(status)
with nogil: CHKERR( MPI_Request_get_status(self.ob_mpi, &flag, statusp) )
return flag
# Multiple Completions
# --------------------
@classmethod
def Waitany(cls, requests, Status status=None):
"""
Wait for any previously initiated request to complete
"""
cdef int count = len(requests)
cdef MPI_Request *irequests = NULL
cdef tmp1 = asarray_Request(requests, &irequests, count)
cdef MPI_Status *statusp = _arg_Status(status)
cdef int index = MPI_UNDEFINED
#
try:
with nogil: CHKERR( MPI_Waitany(count, irequests, &index, statusp) )
finally:
restore_Request(requests, &irequests, count);
#
return index
@classmethod
def Testany(cls, requests, Status status=None):
"""
Test for completion of any previously initiated request
"""
cdef int count = len(requests)
cdef MPI_Request *irequests = NULL
cdef tmp1 = asarray_Request(requests, &irequests, count)
cdef int index = MPI_UNDEFINED
cdef bint flag = 0
cdef MPI_Status *statusp = _arg_Status(status)
#
try:
with nogil: CHKERR( MPI_Testany(count, irequests, &index, &flag, statusp) )
finally:
restore_Request(requests, &irequests, count)
#
return (index, flag)
@classmethod
def Waitall(cls, requests, statuses=None):
"""
Wait for all previously initiated requests to complete
"""
cdef int count = len(requests)
cdef MPI_Request *irequests = NULL
cdef tmp1 = asarray_Request(requests, &irequests, count)
cdef MPI_Status *istatuses = MPI_STATUSES_IGNORE
cdef tmp2 = asarray_Status(statuses, &istatuses, count)
#
try:
with nogil: CHKERR( MPI_Waitall(count, irequests, istatuses) )
finally:
restore_Request(requests, &irequests, count)
restore_Status(statuses, &istatuses, count)
#
return None
@classmethod
def Testall(cls, requests, statuses=None):
"""
Test for completion of all previously initiated requests
"""
cdef int count = len(requests)
cdef MPI_Request *irequests = NULL
cdef tmp1 = asarray_Request(requests, &irequests, count)
cdef MPI_Status *istatuses = MPI_STATUSES_IGNORE
cdef tmp2 = asarray_Status(statuses, &istatuses, count)
cdef bint flag = 0
#
try:
with nogil: CHKERR( MPI_Testall(count, irequests, &flag, istatuses) )
finally:
restore_Request(requests, &irequests, count)
restore_Status(statuses, &istatuses, count)
#
return flag
@classmethod
def Waitsome(cls, requests, statuses=None):
"""
Wait for some previously initiated requests to complete
"""
cdef int incount = len(requests)
cdef MPI_Request *irequests = NULL
cdef tmp1 = asarray_Request(requests, &irequests, incount)
cdef MPI_Status *istatuses = MPI_STATUSES_IGNORE
cdef tmp2 = asarray_Status(statuses, &istatuses, incount)
cdef int outcount = MPI_UNDEFINED
cdef int *iindices = NULL
cdef tmp3 = newarray_int(incount, &iindices)
#
try:
with nogil: CHKERR( MPI_Waitsome(incount, irequests, &outcount, iindices, istatuses) )
finally:
restore_Request(requests, &irequests, incount)
restore_Status(statuses, &istatuses, incount)
#
cdef int i = 0
indices = []
if outcount != 0 and outcount != MPI_UNDEFINED:
indices = [iindices[i] for i from 0 <= i < outcount]
return (outcount, indices)
@classmethod
def Testsome(cls, requests, statuses=None):
"""
Test for completion of some previously initiated requests
"""
cdef int incount = len(requests)
cdef MPI_Request *irequests = NULL
cdef tmp1 = asarray_Request(requests, &irequests, incount)
cdef MPI_Status *istatuses = MPI_STATUSES_IGNORE
cdef tmp2 = asarray_Status(statuses, &istatuses, incount)
cdef int outcount = MPI_UNDEFINED
cdef int *iindices = NULL
cdef tmp3 = newarray_int(incount, &iindices)
#
try:
with nogil: CHKERR( MPI_Waitsome(incount, irequests, &outcount, iindices, istatuses) )
finally:
restore_Request(requests, &irequests, incount)
restore_Status(statuses, &istatuses, incount)
#
cdef int i = 0
indices = []
if outcount != 0 and outcount != MPI_UNDEFINED:
indices = [iindices[i] for i from 0 <= i < outcount]
return (outcount, indices)
# Cancel
# ------
def Cancel(self):
"""
Cancel a communication request
"""
with nogil: CHKERR( MPI_Cancel(&self.ob_mpi) )
# Fortran Handle
# --------------
def py2f(self):
"""
"""
return MPI_Request_c2f(self.ob_mpi)
@classmethod
def f2py(cls, arg):
"""
"""
cdef Request request = cls()
request.ob_mpi = MPI_Request_f2c(arg)
return request
cdef class Prequest(Request):
"""
Persistent request
"""
def Start(self):
"""
Initiate a communication with a persistent request
"""
with nogil: CHKERR( MPI_Start(&self.ob_mpi) )
@classmethod
def Startall(cls, requests):
"""
Start a collection of persistent requests
"""
cdef int count = len(requests)
cdef MPI_Request *irequests = NULL
cdef tmp = asarray_Request(requests, &irequests, count)
#
try:
with nogil: CHKERR( MPI_Startall(count, irequests) )
finally:
restore_Request(requests, &irequests, count)
cdef class Grequest(Request):
"""
Generalized request
"""
def __cinit__(self):
self.ob_grequest = MPI_REQUEST_NULL
@classmethod
def Start(cls, query_fn, free_fn, cancel_fn,
args=None, kargs=None):
"""
Create and return a user-defined request
"""
#
cdef Grequest request = cls()
cdef _p_greq state = \
_p_greq(query_fn, free_fn, cancel_fn,
args, kargs)
with nogil: CHKERR( MPI_Grequest_start(
greq_query_fn, greq_free_fn, greq_cancel_fn,
<void*>state, &request.ob_mpi) )
Py_INCREF(state)
request.ob_grequest = request.ob_mpi
return request
def Complete(self):
"""
Notify that a user-defined request is complete
"""
if self.ob_mpi != MPI_REQUEST_NULL:
if self.ob_mpi != self.ob_grequest:
raise Exception(MPI_ERR_REQUEST)
cdef MPI_Request grequest = self.ob_grequest
self.ob_grequest = self.ob_mpi # sync handles
with nogil: CHKERR( MPI_Grequest_complete(grequest) )
cdef Request __REQUEST_NULL__ = _new_Request(MPI_REQUEST_NULL)
# Predefined request handles
# --------------------------
REQUEST_NULL = __REQUEST_NULL__ #: Null request handle
|
