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
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
|
/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2007 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#ifndef OMPI_PML_OB1_SEND_REQUEST_H
#define OMPI_PML_OB1_SEND_REQUEST_H
#include "ompi/mca/btl/btl.h"
#include "ompi/mca/pml/base/pml_base_sendreq.h"
#include "ompi/mca/mpool/base/base.h"
#include "pml_ob1_comm.h"
#include "pml_ob1_hdr.h"
#include "pml_ob1_rdma.h"
#include "pml_ob1_rdmafrag.h"
#include "ompi/datatype/convertor.h"
#include "ompi/datatype/dt_arch.h"
#include "ompi/mca/bml/bml.h"
BEGIN_C_DECLS
typedef enum {
MCA_PML_OB1_SEND_PENDING_NONE,
MCA_PML_OB1_SEND_PENDING_SCHEDULE,
MCA_PML_OB1_SEND_PENDING_START
} mca_pml_ob1_send_pending_t;
struct mca_pml_ob1_send_request_t {
mca_pml_base_send_request_t req_send;
mca_bml_base_endpoint_t* req_endpoint;
ompi_ptr_t req_recv;
#if OMPI_HAVE_THREAD_SUPPORT
volatile int32_t req_state;
volatile int32_t req_lock;
#else
int32_t req_state;
int32_t req_lock;
#endif
size_t req_pipeline_depth;
size_t req_bytes_delivered;
size_t req_send_offset;
size_t req_rdma_offset;
mca_pml_ob1_rdma_btl_t req_rdma[MCA_PML_OB1_MAX_RDMA_PER_REQUEST];
uint32_t req_rdma_cnt;
mca_pml_ob1_send_pending_t req_pending;
};
typedef struct mca_pml_ob1_send_request_t mca_pml_ob1_send_request_t;
OBJ_CLASS_DECLARATION(mca_pml_ob1_send_request_t);
#define MCA_PML_OB1_SEND_REQUEST_ALLOC( comm, \
dst, \
sendreq, \
rc) \
{ \
ompi_proc_t *proc = ompi_comm_peer_lookup( comm, dst ); \
ompi_free_list_item_t* item; \
\
rc = OMPI_ERR_OUT_OF_RESOURCE; \
if(NULL != proc) { \
rc = OMPI_SUCCESS; \
OMPI_FREE_LIST_WAIT(&mca_pml_base_send_requests, item, rc); \
sendreq = (mca_pml_ob1_send_request_t*)item; \
sendreq->req_send.req_base.req_proc = proc; \
} \
}
#define MCA_PML_OB1_SEND_REQUEST_INIT( sendreq, \
buf, \
count, \
datatype, \
dst, \
tag, \
comm, \
sendmode, \
persistent) \
{ \
MCA_PML_BASE_SEND_REQUEST_INIT(&sendreq->req_send, \
buf, \
count, \
datatype, \
dst, \
tag, \
comm, \
sendmode, \
persistent); \
}
static inline void mca_pml_ob1_free_rdma_resources(mca_pml_ob1_send_request_t* sendreq)
{
size_t r;
/* return mpool resources */
for(r = 0; r < sendreq->req_rdma_cnt; r++) {
mca_mpool_base_registration_t* reg = sendreq->req_rdma[r].btl_reg;
if( NULL != reg ) {
reg->mpool->mpool_deregister(reg->mpool, reg);
}
}
sendreq->req_rdma_cnt = 0;
}
/**
* Start a send request.
*/
#define MCA_PML_OB1_SEND_REQUEST_START(sendreq, rc) \
do { \
rc = mca_pml_ob1_send_request_start(sendreq); \
} while (0)
/*
* Mark a send request as completed at the MPI level.
*/
#define MCA_PML_OB1_SEND_REQUEST_MPI_COMPLETE(sendreq) \
do { \
(sendreq)->req_send.req_base.req_ompi.req_status.MPI_SOURCE = \
(sendreq)->req_send.req_base.req_comm->c_my_rank; \
(sendreq)->req_send.req_base.req_ompi.req_status.MPI_TAG = \
(sendreq)->req_send.req_base.req_tag; \
(sendreq)->req_send.req_base.req_ompi.req_status.MPI_ERROR = OMPI_SUCCESS; \
(sendreq)->req_send.req_base.req_ompi.req_status._count = \
(sendreq)->req_send.req_bytes_packed; \
MCA_PML_BASE_REQUEST_MPI_COMPLETE( &((sendreq)->req_send.req_base.req_ompi) ); \
\
PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_REQ_COMPLETE, \
&(sendreq->req_send.req_base), PERUSE_SEND); \
} while(0)
/*
* The PML has completed a send request. Note that this request
* may have been orphaned by the user or have already completed
* at the MPI level.
* This macro will never be called directly from the upper level, as it should
* only be an internal call to the PML.
*/
#define MCA_PML_OB1_SEND_REQUEST_PML_COMPLETE(sendreq) \
do { \
assert( false == sendreq->req_send.req_base.req_pml_complete ); \
\
if( sendreq->req_send.req_bytes_packed > 0 ) { \
PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_REQ_XFER_END, \
&(sendreq->req_send.req_base), \
PERUSE_SEND ); \
} \
\
/* return mpool resources */ \
mca_pml_ob1_free_rdma_resources(sendreq); \
\
if (sendreq->req_send.req_send_mode == MCA_PML_BASE_SEND_BUFFERED && \
sendreq->req_send.req_addr != sendreq->req_send.req_base.req_addr) { \
mca_pml_base_bsend_request_fini((ompi_request_t*)sendreq); \
} \
\
OPAL_THREAD_LOCK(&ompi_request_lock); \
if( false == sendreq->req_send.req_base.req_ompi.req_complete ) { \
/* Should only be called for long messages (maybe synchronous) */ \
MCA_PML_OB1_SEND_REQUEST_MPI_COMPLETE(sendreq); \
} \
sendreq->req_send.req_base.req_pml_complete = true; \
\
if( sendreq->req_send.req_base.req_free_called ) { \
MCA_PML_OB1_SEND_REQUEST_RETURN( sendreq ); \
} \
OPAL_THREAD_UNLOCK(&ompi_request_lock); \
} while (0)
/**
* Schedule additional fragments
*/
int mca_pml_ob1_send_request_schedule_exclusive(
mca_pml_ob1_send_request_t* sendreq);
static void inline mca_pml_ob1_send_request_schedule(
mca_pml_ob1_send_request_t* sendreq)
{
/*
* Only allow one thread in this routine for a given request.
* However, we cannot block callers on a mutex, so simply keep track
* of the number of times the routine has been called and run through
* the scheduling logic once for every call.
*/
if(OPAL_THREAD_ADD32(&sendreq->req_lock, 1) == 1)
mca_pml_ob1_send_request_schedule_exclusive(sendreq);
}
/*
* Release resources associated with a request
*/
#define MCA_PML_OB1_SEND_REQUEST_RETURN(sendreq) \
{ \
/* Let the base handle the reference counts */ \
MCA_PML_BASE_SEND_REQUEST_FINI((&(sendreq)->req_send)); \
OMPI_FREE_LIST_RETURN( &mca_pml_base_send_requests, \
(ompi_free_list_item_t*)sendreq); \
}
/**
* Start the specified request
*/
int mca_pml_ob1_send_request_start_buffered(
mca_pml_ob1_send_request_t* sendreq,
mca_bml_base_btl_t* bml_btl,
size_t size);
int mca_pml_ob1_send_request_start_copy(
mca_pml_ob1_send_request_t* sendreq,
mca_bml_base_btl_t* bml_btl,
size_t size);
int mca_pml_ob1_send_request_start_prepare(
mca_pml_ob1_send_request_t* sendreq,
mca_bml_base_btl_t* bml_btl,
size_t size);
int mca_pml_ob1_send_request_start_rdma(
mca_pml_ob1_send_request_t* sendreq,
mca_bml_base_btl_t* bml_btl,
size_t size);
int mca_pml_ob1_send_request_start_rndv(
mca_pml_ob1_send_request_t* sendreq,
mca_bml_base_btl_t* bml_btl,
size_t size,
int flags);
static inline int
mca_pml_ob1_send_request_start_btl( mca_pml_ob1_send_request_t* sendreq,
mca_bml_base_btl_t* bml_btl )
{
size_t size = sendreq->req_send.req_bytes_packed;
size_t eager_limit = bml_btl->btl_eager_limit;
int rc;
if( eager_limit > mca_pml_ob1.eager_limit )
eager_limit = mca_pml_ob1.eager_limit;
eager_limit -= sizeof(mca_pml_ob1_hdr_t);
if(size <= eager_limit) {
switch(sendreq->req_send.req_send_mode) {
case MCA_PML_BASE_SEND_SYNCHRONOUS:
rc = mca_pml_ob1_send_request_start_rndv(sendreq, bml_btl, size, 0);
break;
case MCA_PML_BASE_SEND_BUFFERED:
rc = mca_pml_ob1_send_request_start_copy(sendreq, bml_btl, size);
break;
case MCA_PML_BASE_SEND_COMPLETE:
rc = mca_pml_ob1_send_request_start_prepare(sendreq, bml_btl, size);
break;
default:
if (size != 0 && bml_btl->btl_flags & MCA_BTL_FLAGS_SEND_INPLACE) {
rc = mca_pml_ob1_send_request_start_prepare(sendreq, bml_btl, size);
} else {
rc = mca_pml_ob1_send_request_start_copy(sendreq, bml_btl, size);
}
break;
}
} else {
size = eager_limit;
if(sendreq->req_send.req_send_mode == MCA_PML_BASE_SEND_BUFFERED) {
rc = mca_pml_ob1_send_request_start_buffered(sendreq, bml_btl, size);
} else if
(ompi_convertor_need_buffers(&sendreq->req_send.req_base.req_convertor) == false) {
char *base;
ptrdiff_t lb;
ompi_ddt_type_lb(sendreq->req_send.req_base.req_convertor.pDesc, &lb);
base = sendreq->req_send.req_base.req_convertor.pBaseBuf + lb;
if( 0 != (sendreq->req_rdma_cnt = mca_pml_ob1_rdma_btls(
sendreq->req_endpoint,
(unsigned char *) base,
sendreq->req_send.req_bytes_packed,
sendreq->req_rdma))) {
rc = mca_pml_ob1_send_request_start_rdma(sendreq, bml_btl,
sendreq->req_send.req_bytes_packed);
if(OMPI_SUCCESS != rc) {
mca_pml_ob1_free_rdma_resources(sendreq);
}
} else {
rc = mca_pml_ob1_send_request_start_rndv(sendreq, bml_btl, size,
MCA_PML_OB1_HDR_FLAGS_CONTIG);
}
} else {
rc = mca_pml_ob1_send_request_start_rndv(sendreq, bml_btl, size, 0);
}
}
return rc;
}
static inline int
mca_pml_ob1_send_request_start( mca_pml_ob1_send_request_t* sendreq )
{
mca_pml_ob1_comm_t* comm = sendreq->req_send.req_base.req_comm->c_pml_comm;
mca_bml_base_endpoint_t* endpoint = (mca_bml_base_endpoint_t*)
sendreq->req_send.req_base.req_proc->proc_bml;
size_t i;
if(endpoint == NULL) {
return OMPI_ERR_UNREACH;
}
sendreq->req_lock = 0;
sendreq->req_pipeline_depth = 0;
sendreq->req_bytes_delivered = 0;
sendreq->req_state = 0;
sendreq->req_send_offset = 0;
sendreq->req_pending = MCA_PML_OB1_SEND_PENDING_NONE;
sendreq->req_send.req_base.req_sequence = OPAL_THREAD_ADD32(
&comm->procs[sendreq->req_send.req_base.req_peer].send_sequence,1);
sendreq->req_endpoint = endpoint;
MCA_PML_BASE_SEND_START( &sendreq->req_send.req_base );
for(i = 0; i < mca_bml_base_btl_array_get_size(&endpoint->btl_eager); i++) {
mca_bml_base_btl_t* bml_btl;
int rc;
/* select a btl */
bml_btl = mca_bml_base_btl_array_get_next(&endpoint->btl_eager);
rc = mca_pml_ob1_send_request_start_btl(sendreq, bml_btl);
if(OMPI_ERR_OUT_OF_RESOURCE != rc)
return rc;
}
OPAL_THREAD_LOCK(&mca_pml_ob1.lock);
sendreq->req_pending = MCA_PML_OB1_SEND_PENDING_START;
opal_list_append(&mca_pml_ob1.send_pending, (opal_list_item_t*)sendreq);
OPAL_THREAD_UNLOCK(&mca_pml_ob1.lock);
return OMPI_SUCCESS;
}
/**
* Initiate a put scheduled by the receiver.
*/
void mca_pml_ob1_send_request_put( mca_pml_ob1_send_request_t* sendreq,
mca_btl_base_module_t* btl,
mca_pml_ob1_rdma_hdr_t* hdr );
int mca_pml_ob1_send_request_put_frag(mca_pml_ob1_rdma_frag_t* frag);
/* This function tries to continue sendreq that was stuck because of resource
* unavailability. A sendreq may be added to send_pending list if there is no
* resource to send initial packet or there is not resource to schedule data
* for sending. The reason the sendreq was added to the list is stored inside
* sendreq struct and appropriate operation is retried when resource became
* available. bml_btl passed to the function doesn't represents sendreq
* destination, it represents BTL on which resource was freed, so only this BTL
* should be considered for sending packets */
void mca_pml_ob1_send_request_process_pending(mca_bml_base_btl_t *bml_btl);
END_C_DECLS
#endif /* !defined(OMPI_PML_OB1_SEND_REQUEST_H) */
|
