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pml_bfo_sendreq.h
1 /*
2 * Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
3 * University Research and Technology
4 * Corporation. All rights reserved.
5 * Copyright (c) 2004-2010 The University of Tennessee and The University
6 * of Tennessee Research Foundation. All rights
7 * reserved.
8 * Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
9 * University of Stuttgart. All rights reserved.
10 * Copyright (c) 2004-2005 The Regents of the University of California.
11 * All rights reserved.
12 * Copyright (c) 2009-2012 Oracle and/or its affiliates. All rights reserved.
13 * $COPYRIGHT$
14 *
15 * Additional copyrights may follow
16 *
17 * $HEADER$
18 */
19
20 #ifndef OMPI_PML_BFO_SEND_REQUEST_H
21 #define OMPI_PML_BFO_SEND_REQUEST_H
22
23 #include "ompi/mca/btl/btl.h"
24 #include "ompi/mca/pml/base/pml_base_sendreq.h"
25 #include "ompi/mca/mpool/base/base.h"
26 #include "pml_bfo_comm.h"
27 #include "pml_bfo_hdr.h"
28 #include "pml_bfo_rdma.h"
29 #include "pml_bfo_rdmafrag.h"
30 #include "opal/datatype/opal_convertor.h"
31 #include "ompi/mca/bml/bml.h"
32
33 BEGIN_C_DECLS
34
35 typedef enum {
36 MCA_PML_BFO_SEND_PENDING_NONE,
37 MCA_PML_BFO_SEND_PENDING_SCHEDULE,
38 MCA_PML_BFO_SEND_PENDING_START
39 } mca_pml_bfo_send_pending_t;
40
41 struct mca_pml_bfo_send_request_t {
42 mca_pml_base_send_request_t req_send;
43 mca_bml_base_endpoint_t* req_endpoint;
44 ompi_ptr_t req_recv;
45 #if PML_BFO
46 int32_t req_events; /* number of outstanding events on request */
47 int32_t req_restartseq; /* sequence number of restarted request */
48 int32_t req_restart; /* state of restarted request */
49 int32_t req_error; /* non-zero when error has occurred on request */
50 #endif /* PML_BFO */
51 int32_t req_state;
52 int32_t req_lock;
53 bool req_throttle_sends;
54 size_t req_pipeline_depth;
55 size_t req_bytes_delivered;
56 uint32_t req_rdma_cnt;
57 mca_pml_bfo_send_pending_t req_pending;
58 opal_mutex_t req_send_range_lock;
59 opal_list_t req_send_ranges;
60 mca_pml_bfo_com_btl_t req_rdma[1];
61 };
62 typedef struct mca_pml_bfo_send_request_t mca_pml_bfo_send_request_t;
63
64 OBJ_CLASS_DECLARATION(mca_pml_bfo_send_request_t);
65
66 struct mca_pml_bfo_send_range_t {
67 ompi_free_list_item_t base;
68 uint64_t range_send_offset;
69 uint64_t range_send_length;
70 int range_btl_idx;
71 int range_btl_cnt;
72 mca_pml_bfo_com_btl_t range_btls[1];
73 };
74 typedef struct mca_pml_bfo_send_range_t mca_pml_bfo_send_range_t;
75 OBJ_CLASS_DECLARATION(mca_pml_bfo_send_range_t);
76
77 static inline bool lock_send_request(mca_pml_bfo_send_request_t *sendreq)
78 {
79 return OPAL_THREAD_ADD32(&sendreq->req_lock, 1) == 1;
80 }
81
82 static inline bool unlock_send_request(mca_pml_bfo_send_request_t *sendreq)
83 {
84 return OPAL_THREAD_ADD32(&sendreq->req_lock, -1) == 0;
85 }
86
87 static inline void
88 add_request_to_send_pending(mca_pml_bfo_send_request_t* sendreq,
89 const mca_pml_bfo_send_pending_t type,
90 const bool append)
91 {
92 opal_list_item_t *item = (opal_list_item_t*)sendreq;
93
94 OPAL_THREAD_LOCK(&mca_pml_bfo.lock);
95 sendreq->req_pending = type;
96 if(append)
97 opal_list_append(&mca_pml_bfo.send_pending, item);
98 else
99 opal_list_prepend(&mca_pml_bfo.send_pending, item);
100
101 OPAL_THREAD_UNLOCK(&mca_pml_bfo.lock);
102 }
103
104 static inline mca_pml_bfo_send_request_t*
105 get_request_from_send_pending(mca_pml_bfo_send_pending_t *type)
106 {
107 mca_pml_bfo_send_request_t *sendreq;
108
109 OPAL_THREAD_LOCK(&mca_pml_bfo.lock);
110 sendreq = (mca_pml_bfo_send_request_t*)
111 opal_list_remove_first(&mca_pml_bfo.send_pending);
112 if(sendreq) {
113 *type = sendreq->req_pending;
114 sendreq->req_pending = MCA_PML_BFO_SEND_PENDING_NONE;
115 }
116 OPAL_THREAD_UNLOCK(&mca_pml_bfo.lock);
117
118 return sendreq;
119 }
120
121 #define MCA_PML_BFO_SEND_REQUEST_ALLOC( comm, \
122 dst, \
123 sendreq, \
124 rc) \
125 { \
126 ompi_proc_t *proc = ompi_comm_peer_lookup( comm, dst ); \
127 ompi_free_list_item_t* item; \
128 \
129 rc = OMPI_ERR_OUT_OF_RESOURCE; \
130 if( OPAL_LIKELY(NULL != proc) ) { \
131 rc = OMPI_SUCCESS; \
132 OMPI_FREE_LIST_WAIT(&mca_pml_base_send_requests, item, rc); \
133 sendreq = (mca_pml_bfo_send_request_t*)item; \
134 sendreq->req_send.req_base.req_proc = proc; \
135 } \
136 }
137
138
139 #define MCA_PML_BFO_SEND_REQUEST_INIT( sendreq, \
140 buf, \
141 count, \
142 datatype, \
143 dst, \
144 tag, \
145 comm, \
146 sendmode, \
147 persistent) \
148 { \
149 MCA_PML_BASE_SEND_REQUEST_INIT(&sendreq->req_send, \
150 buf, \
151 count, \
152 datatype, \
153 dst, \
154 tag, \
155 comm, \
156 sendmode, \
157 persistent, \
158 0); /* convertor_flags */ \
159 (sendreq)->req_recv.pval = NULL; \
160 }
161
162
163 static inline void mca_pml_bfo_free_rdma_resources(mca_pml_bfo_send_request_t* sendreq)
164 {
165 size_t r;
166
167 /* return mpool resources */
168 for(r = 0; r < sendreq->req_rdma_cnt; r++) {
169 mca_mpool_base_registration_t* reg = sendreq->req_rdma[r].btl_reg;
170 if( NULL != reg && reg->mpool != NULL ) {
171 reg->mpool->mpool_deregister(reg->mpool, reg);
172 }
173 }
174 sendreq->req_rdma_cnt = 0;
175 }
176
177
178 /**
179 * Start a send request.
180 */
181
182 #define MCA_PML_BFO_SEND_REQUEST_START(sendreq, rc) \
183 do { \
184 rc = mca_pml_bfo_send_request_start(sendreq); \
185 } while (0)
186
187
188 /*
189 * Mark a send request as completed at the MPI level.
190 */
191
192 #define MCA_PML_BFO_SEND_REQUEST_MPI_COMPLETE(sendreq, with_signal) \
193 do { \
194 (sendreq)->req_send.req_base.req_ompi.req_status.MPI_SOURCE = \
195 (sendreq)->req_send.req_base.req_comm->c_my_rank; \
196 (sendreq)->req_send.req_base.req_ompi.req_status.MPI_TAG = \
197 (sendreq)->req_send.req_base.req_tag; \
198 (sendreq)->req_send.req_base.req_ompi.req_status.MPI_ERROR = OMPI_SUCCESS; \
199 (sendreq)->req_send.req_base.req_ompi.req_status._ucount = \
200 (sendreq)->req_send.req_bytes_packed; \
201 ompi_request_complete( &((sendreq)->req_send.req_base.req_ompi), (with_signal) ); \
202 \
203 PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_REQ_COMPLETE, \
204 &(sendreq->req_send.req_base), PERUSE_SEND); \
205 } while(0)
206
207 /*
208 * Release resources associated with a request
209 */
210
211 #define MCA_PML_BFO_SEND_REQUEST_RETURN(sendreq) \
212 do { \
213 /* Let the base handle the reference counts */ \
214 MCA_PML_BASE_SEND_REQUEST_FINI((&(sendreq)->req_send)); \
215 OMPI_FREE_LIST_RETURN( &mca_pml_base_send_requests, \
216 (ompi_free_list_item_t*)sendreq); \
217 } while(0)
218
219
220 /*
221 * The PML has completed a send request. Note that this request
222 * may have been orphaned by the user or have already completed
223 * at the MPI level.
224 * This function will never be called directly from the upper level, as it
225 * should only be an internal call to the PML.
226 *
227 */
228 static inline void
229 send_request_pml_complete(mca_pml_bfo_send_request_t *sendreq)
230 {
231 assert(false == sendreq->req_send.req_base.req_pml_complete);
232
233 if(sendreq->req_send.req_bytes_packed > 0) {
234 PERUSE_TRACE_COMM_EVENT( PERUSE_COMM_REQ_XFER_END,
235 &(sendreq->req_send.req_base), PERUSE_SEND);
236 }
237
238 /* return mpool resources */
239 mca_pml_bfo_free_rdma_resources(sendreq);
240
241 if (sendreq->req_send.req_send_mode == MCA_PML_BASE_SEND_BUFFERED &&
242 sendreq->req_send.req_addr != sendreq->req_send.req_base.req_addr) {
243 mca_pml_base_bsend_request_fini((ompi_request_t*)sendreq);
244 }
245
246 OPAL_THREAD_LOCK(&ompi_request_lock);
247 if(false == sendreq->req_send.req_base.req_ompi.req_complete) {
248 /* Should only be called for long messages (maybe synchronous) */
249 MCA_PML_BFO_SEND_REQUEST_MPI_COMPLETE(sendreq, true);
250 }
251 sendreq->req_send.req_base.req_pml_complete = true;
252 #if PML_BFO
253 sendreq->req_send.req_base.req_sequence -= 100;
254 #endif /* PML_BFO */
255
256 if(sendreq->req_send.req_base.req_free_called) {
257 MCA_PML_BFO_SEND_REQUEST_RETURN(sendreq);
258 }
259 OPAL_THREAD_UNLOCK(&ompi_request_lock);
260 }
261
262 /* returns true if request was completed on PML level */
263 static inline bool
264 send_request_pml_complete_check(mca_pml_bfo_send_request_t *sendreq)
265 {
266 #if OPAL_ENABLE_MULTI_THREADS
267 opal_atomic_rmb();
268 #endif
269 /* if no more events are expected for the request and the whole message is
270 * already sent and send fragment scheduling isn't running in another
271 * thread then complete the request on PML level. From now on, if user
272 * called free on this request, the request structure can be reused for
273 * another request or if the request is persistent it can be restarted */
274 if(sendreq->req_state == 0 &&
275 sendreq->req_bytes_delivered >= sendreq->req_send.req_bytes_packed
276 && lock_send_request(sendreq)) {
277 send_request_pml_complete(sendreq);
278 return true;
279 }
280
281 return false;
282 }
283
284 /**
285 * Schedule additional fragments
286 */
287 int
288 mca_pml_bfo_send_request_schedule_once(mca_pml_bfo_send_request_t*);
289
290 static inline int
291 mca_pml_bfo_send_request_schedule_exclusive(mca_pml_bfo_send_request_t* sendreq)
292 {
293 int rc;
294 do {
295 rc = mca_pml_bfo_send_request_schedule_once(sendreq);
296 if(OPAL_SOS_GET_ERROR_CODE(rc) == OMPI_ERR_OUT_OF_RESOURCE)
297 break;
298 } while(!unlock_send_request(sendreq));
299
300 if(OMPI_SUCCESS == rc)
301 send_request_pml_complete_check(sendreq);
302
303 return rc;
304 }
305
306 static inline void
307 mca_pml_bfo_send_request_schedule(mca_pml_bfo_send_request_t* sendreq)
308 {
309 /*
310 * Only allow one thread in this routine for a given request.
311 * However, we cannot block callers on a mutex, so simply keep track
312 * of the number of times the routine has been called and run through
313 * the scheduling logic once for every call.
314 */
315
316 if(!lock_send_request(sendreq))
317 return;
318
319 mca_pml_bfo_send_request_schedule_exclusive(sendreq);
320 }
321
322 #if OMPI_CUDA_SUPPORT
323 int mca_pml_bfo_send_request_start_cuda(
324 mca_pml_bfo_send_request_t* sendreq,
325 mca_bml_base_btl_t* bml_btl,
326 size_t size);
327 #endif /* OMPI_CUDA_SUPPORT */
328
329 /**
330 * Start the specified request
331 */
332
333 int mca_pml_bfo_send_request_start_buffered(
334 mca_pml_bfo_send_request_t* sendreq,
335 mca_bml_base_btl_t* bml_btl,
336 size_t size);
337
338 int mca_pml_bfo_send_request_start_copy(
339 mca_pml_bfo_send_request_t* sendreq,
340 mca_bml_base_btl_t* bml_btl,
341 size_t size);
342
343 int mca_pml_bfo_send_request_start_prepare(
344 mca_pml_bfo_send_request_t* sendreq,
345 mca_bml_base_btl_t* bml_btl,
346 size_t size);
347
348 int mca_pml_bfo_send_request_start_rdma(
349 mca_pml_bfo_send_request_t* sendreq,
350 mca_bml_base_btl_t* bml_btl,
351 size_t size);
352
353 int mca_pml_bfo_send_request_start_rndv(
354 mca_pml_bfo_send_request_t* sendreq,
355 mca_bml_base_btl_t* bml_btl,
356 size_t size,
357 int flags);
358
359 static inline int
360 mca_pml_bfo_send_request_start_btl( mca_pml_bfo_send_request_t* sendreq,
361 mca_bml_base_btl_t* bml_btl )
362 {
363 size_t size = sendreq->req_send.req_bytes_packed;
364 mca_btl_base_module_t* btl = bml_btl->btl;
365 size_t eager_limit = btl->btl_eager_limit - sizeof(mca_pml_bfo_hdr_t);
366 int rc;
367
368 if( OPAL_LIKELY(size <= eager_limit) ) {
369 switch(sendreq->req_send.req_send_mode) {
370 case MCA_PML_BASE_SEND_SYNCHRONOUS:
371 rc = mca_pml_bfo_send_request_start_rndv(sendreq, bml_btl, size, 0);
372 break;
373 case MCA_PML_BASE_SEND_BUFFERED:
374 rc = mca_pml_bfo_send_request_start_copy(sendreq, bml_btl, size);
375 break;
376 case MCA_PML_BASE_SEND_COMPLETE:
377 rc = mca_pml_bfo_send_request_start_prepare(sendreq, bml_btl, size);
378 break;
379 default:
380 if (size != 0 && bml_btl->btl_flags & MCA_BTL_FLAGS_SEND_INPLACE) {
381 rc = mca_pml_bfo_send_request_start_prepare(sendreq, bml_btl, size);
382 } else {
383 rc = mca_pml_bfo_send_request_start_copy(sendreq, bml_btl, size);
384 }
385 break;
386 }
387 } else {
388 size = eager_limit;
389 if(OPAL_UNLIKELY(btl->btl_rndv_eager_limit < eager_limit))
390 size = btl->btl_rndv_eager_limit;
391 if(sendreq->req_send.req_send_mode == MCA_PML_BASE_SEND_BUFFERED) {
392 rc = mca_pml_bfo_send_request_start_buffered(sendreq, bml_btl, size);
393 } else if
394 (opal_convertor_need_buffers(&sendreq->req_send.req_base.req_convertor) == false) {
395 unsigned char *base;
396 opal_convertor_get_current_pointer( &sendreq->req_send.req_base.req_convertor, (void**)&base );
397
398 if( 0 != (sendreq->req_rdma_cnt = (uint32_t)mca_pml_bfo_rdma_btls(
399 sendreq->req_endpoint,
400 base,
401 sendreq->req_send.req_bytes_packed,
402 sendreq->req_rdma))) {
403 rc = mca_pml_bfo_send_request_start_rdma(sendreq, bml_btl,
404 sendreq->req_send.req_bytes_packed);
405 if( OPAL_UNLIKELY(OMPI_SUCCESS != rc) ) {
406 mca_pml_bfo_free_rdma_resources(sendreq);
407 }
408 } else {
409 rc = mca_pml_bfo_send_request_start_rndv(sendreq, bml_btl, size,
410 MCA_PML_BFO_HDR_FLAGS_CONTIG);
411 }
412 } else {
413 #if OMPI_CUDA_SUPPORT
414 if (sendreq->req_send.req_base.req_convertor.flags & CONVERTOR_CUDA) {
415 return mca_pml_bfo_send_request_start_cuda(sendreq, bml_btl, size);
416 }
417 #endif /* OMPI_CUDA_SUPPORT */
418 rc = mca_pml_bfo_send_request_start_rndv(sendreq, bml_btl, size, 0);
419 }
420 }
421
422 return rc;
423 }
424
425 static inline int
426 mca_pml_bfo_send_request_start( mca_pml_bfo_send_request_t* sendreq )
427 {
428 mca_pml_bfo_comm_t* comm = sendreq->req_send.req_base.req_comm->c_pml_comm;
429 mca_bml_base_endpoint_t* endpoint = (mca_bml_base_endpoint_t*)
430 sendreq->req_send.req_base.req_proc->proc_bml;
431 size_t i;
432
433 if( OPAL_UNLIKELY(endpoint == NULL) ) {
434 return OMPI_ERR_UNREACH;
435 }
436
437 sendreq->req_endpoint = endpoint;
438 sendreq->req_state = 0;
439 sendreq->req_lock = 0;
440 sendreq->req_pipeline_depth = 0;
441 sendreq->req_bytes_delivered = 0;
442 sendreq->req_pending = MCA_PML_BFO_SEND_PENDING_NONE;
443 sendreq->req_send.req_base.req_sequence = OPAL_THREAD_ADD32(
444 &comm->procs[sendreq->req_send.req_base.req_peer].send_sequence,1);
445 #if PML_BFO
446 sendreq->req_restartseq = 0; /* counts up restarts */
447 sendreq->req_restart = 0; /* reset in case we restart again */
448 sendreq->req_error = 0; /* clear error state */
449 sendreq->req_events = 0; /* clear events, probably 0 anyways */
450 #endif /* PML_BFO */
451
452 MCA_PML_BASE_SEND_START( &sendreq->req_send.req_base );
453
454 for(i = 0; i < mca_bml_base_btl_array_get_size(&endpoint->btl_eager); i++) {
455 mca_bml_base_btl_t* bml_btl;
456 int rc;
457
458 /* select a btl */
459 bml_btl = mca_bml_base_btl_array_get_next(&endpoint->btl_eager);
460 rc = mca_pml_bfo_send_request_start_btl(sendreq, bml_btl);
461 if( OPAL_LIKELY(OMPI_ERR_OUT_OF_RESOURCE != OPAL_SOS_GET_ERROR_CODE(rc)) )
462 return rc;
463 }
464 add_request_to_send_pending(sendreq, MCA_PML_BFO_SEND_PENDING_START, true);
465
466 return OMPI_SUCCESS;
467 }
468
469 /**
470 * Initiate a put scheduled by the receiver.
471 */
472
473 void mca_pml_bfo_send_request_put( mca_pml_bfo_send_request_t* sendreq,
474 mca_btl_base_module_t* btl,
475 mca_pml_bfo_rdma_hdr_t* hdr );
476
477 int mca_pml_bfo_send_request_put_frag(mca_pml_bfo_rdma_frag_t* frag);
478
479 /* This function tries to continue sendreq that was stuck because of resource
480 * unavailability. A sendreq may be added to send_pending list if there is no
481 * resource to send initial packet or there is not resource to schedule data
482 * for sending. The reason the sendreq was added to the list is stored inside
483 * sendreq struct and appropriate operation is retried when resource became
484 * available. bml_btl passed to the function doesn't represents sendreq
485 * destination, it represents BTL on which resource was freed, so only this BTL
486 * should be considered for sending packets */
487 void mca_pml_bfo_send_request_process_pending(mca_bml_base_btl_t *bml_btl);
488
489 void mca_pml_bfo_send_request_copy_in_out(mca_pml_bfo_send_request_t *sendreq,
490 uint64_t send_offset, uint64_t send_length);
491
492 END_C_DECLS
493
494 #endif /* OMPI_PML_BFO_SEND_REQUEST_H */
OPAL_THREAD_ADD32
#define OPAL_THREAD_ADD32(x, y)
Use an atomic operation for increment/decrement if opal_using_threads() indicates that threads are in...
Definition: mutex.h:367
ompi_proc_t::proc_bml
struct mca_bml_base_endpoint_t * proc_bml
BML specific proc data.
Definition: proc.h:64
mca_pml_bfo_com_btl_t
Definition: pml_bfo.h:299
mca_bml_base_btl_t::btl_flags
uint32_t btl_flags
support for put/get?
Definition: bml.h:59
opal_atomic_rmb
void opal_atomic_rmb(void)
Read memory barrier.
mca_pml_base_request_t::req_comm
struct ompi_communicator_t * req_comm
communicator pointer
Definition: pml_base_request.h:63
ompi_ptr_t
Definition: types.h:52
mca_pml_comm_t
Cached on ompi_communicator_t to hold queues/state used by the PML<->PTL interface for matching logic...
Definition: pml_bfo_comm.h:51
opal_mutex_t
Definition: mutex_unix.h:53
pml_bfo_hdr.h
base.h
mca_pml_bfo_hdr_t
Union of defined hdr types.
Definition: pml_bfo_hdr.h:441
mca_btl_base_module_t::btl_rndv_eager_limit
size_t btl_rndv_eager_limit
the size of a data sent in a first fragment of rendezvous protocol
Definition: btl.h:791
mca_pml_bfo_comm_proc_t::send_sequence
int32_t send_sequence
send side sequence number
Definition: pml_bfo_comm.h:38
mca_pml_base_request_t::req_peer
int32_t req_peer
peer process - rank w/in this communicator
Definition: pml_base_request.h:71
mca_mpool_base_registration_t
Definition: mpool.h:44
bml.h
BML Management Layer (BML)
opal_list_item_t
Definition: opal_list.h:98
OPAL_THREAD_LOCK
#define OPAL_THREAD_LOCK(mutex)
Lock a mutex if opal_using_threads() says that multiple threads may be active in the process...
Definition: mutex.h:223
mca_pml_bfo_rdma_hdr_t
Header used to initiate an RDMA operation.
Definition: pml_bfo_hdr.h:294
mca_pml_base_send_request_t::req_addr
void * req_addr
pointer to send buffer - may not be application buffer
Definition: pml_base_sendreq.h:39
OPAL_THREAD_UNLOCK
#define OPAL_THREAD_UNLOCK(mutex)
Unlock a mutex if opal_using_threads() says that multiple threads may be active in the process...
Definition: mutex.h:309
pml_bfo_rdmafrag.h
mca_pml_base_request_t::req_convertor
opal_convertor_t req_convertor
always need the convertor
Definition: pml_base_request.h:66
mca_pml_base_send_request_t::req_base
mca_pml_base_request_t req_base
base request type - common data structure for use by wait/test
Definition: pml_base_sendreq.h:38
opal_list_append
#define opal_list_append(l, i)
Append an item to the end of the list.
Definition: opal_list.h:410
mca_pml_base_request_t::req_pml_complete
volatile bool req_pml_complete
flag indicating if the pt-2-pt layer is done with this request
Definition: pml_base_request.h:61
btl.h
Byte Transfer Layer (BTL)
mca_pml_base_request_t::req_proc
struct ompi_proc_t * req_proc
peer process
Definition: pml_base_request.h:73
mca_bml_base_endpoint_t::btl_eager
mca_bml_base_btl_array_t btl_eager
array of btls to use for first fragments
Definition: bml.h:228
ompi_request_t::req_complete
volatile bool req_complete
Flag indicating wether request has completed.
Definition: request.h:104
mca_mpool_base_module_t::mpool_deregister
mca_mpool_base_module_deregister_fn_t mpool_deregister
deregister memory
Definition: mpool.h:181
mca_pml_base_send_request_t
Base type for send requests.
Definition: pml_base_sendreq.h:37
pml_bfo_rdma.h
ompi_free_list_item_t
Definition: ompi_free_list.h:62
mca_pml_bfo_send_range_t
Definition: pml_bfo_sendreq.h:66
mca_bml_base_endpoint_t
Structure associated w/ ompi_proc_t that contains the set of BTLs used to reach a destination...
Definition: bml.h:222
mca_pml_base_request_t::req_addr
void * req_addr
pointer to application buffer
Definition: pml_base_request.h:69
mca_pml_bfo_rdma_frag_t
Definition: pml_bfo_rdmafrag.h:36
MCA_PML_BASE_SEND_START
#define MCA_PML_BASE_SEND_START(request)
Mark the request as started from the PML base point of view.
Definition: pml_base_sendreq.h:120
mca_bml_base_btl_t
Definition: bml.h:58
opal_list_t
Definition: opal_list.h:147
opal_list_remove_first
static opal_list_item_t * opal_list_remove_first(opal_list_t *list)
Remove the first item from the list and return it.
Definition: opal_list.h:522
opal_list_prepend
static void opal_list_prepend(opal_list_t *list, opal_list_item_t *item)
Prepend an item to the beginning of the list.
Definition: opal_list.h:469
mca_bml_base_btl_t::btl
struct mca_btl_base_module_t * btl
BTL module.
Definition: bml.h:61
mca_pml_bfo_send_request_t
Definition: pml_bfo_sendreq.h:41
mca_pml_base_request_t::req_ompi
ompi_request_t req_ompi
base request
Definition: pml_base_request.h:60
mca_bml_base_btl_array_get_size
static size_t mca_bml_base_btl_array_get_size(mca_bml_base_btl_array_t *array)
If required, reallocate (grow) the array to the indicate size.
Definition: bml.h:91
mca_btl_base_module_t
BTL module interface functions and attributes.
Definition: btl.h:786
mca_pml_base_send_request_t::req_bytes_packed
size_t req_bytes_packed
packed size of a message given the datatype and count
Definition: pml_base_sendreq.h:40
opal_convertor_t::flags
uint32_t flags
the properties of this convertor
Definition: opal_convertor.h:93
mca_pml_base_send_request_t::req_send_mode
mca_pml_base_send_mode_t req_send_mode
type of send
Definition: pml_base_sendreq.h:41
ompi_request_t
Main top-level request struct definition.
Definition: request.h:100
pml_bfo_comm.h
pml_base_sendreq.h
mca_btl_base_module_t::btl_eager_limit
size_t btl_eager_limit
maximum size of first fragment – eager send
Definition: btl.h:790
OBJ_CLASS_DECLARATION
#define OBJ_CLASS_DECLARATION(NAME)
Declaration for class descriptor.
Definition: opal_object.h:236
mca_pml_base_request_t::req_sequence
uint64_t req_sequence
sequence number for MPI pt-2-pt ordering
Definition: pml_base_request.h:74
mca_pml_base_request_t::req_free_called
volatile bool req_free_called
flag indicating if the user has freed this request
Definition: pml_base_request.h:65
mca_bml_base_btl_array_get_next
static mca_bml_base_btl_t * mca_bml_base_btl_array_get_next(mca_bml_base_btl_array_t *array)
Return the next LRU index in the array.
Definition: bml.h:179