4 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_base, smpi,
5 "Logging specific to SMPI (base)");
6 XBT_LOG_EXTERNAL_CATEGORY(smpi_base);
7 XBT_LOG_EXTERNAL_CATEGORY(smpi_bench);
8 XBT_LOG_EXTERNAL_CATEGORY(smpi_kernel);
9 XBT_LOG_EXTERNAL_CATEGORY(smpi_mpi);
10 XBT_LOG_EXTERNAL_CATEGORY(smpi_mpi_dt);
11 XBT_LOG_EXTERNAL_CATEGORY(smpi_coll);
12 XBT_LOG_EXTERNAL_CATEGORY(smpi_receiver);
13 XBT_LOG_EXTERNAL_CATEGORY(smpi_sender);
14 XBT_LOG_EXTERNAL_CATEGORY(smpi_util);
16 void smpi_process_init(int* argc, char*** argv) {
18 smpi_process_data_t data;
21 proc = SIMIX_process_self();
22 index = atoi((*argv)[1]);
23 data = smpi_process_remote_data(index);
24 SIMIX_process_set_data(proc, data);
27 memmove(&(*argv)[1], &(*argv)[2], sizeof(char *) * (*argc - 2));
28 (*argv)[(*argc) - 1] = NULL;
31 DEBUG2("<%d> New process in the game: %p", index, proc);
34 void smpi_process_destroy(void) {
35 int index = smpi_process_index();
37 DEBUG1("<%d> Process left the game", index);
40 /* MPI Low level calls */
41 MPI_Request smpi_mpi_isend(void* buf, int count, MPI_Datatype datatype, int dst, int tag, MPI_Comm comm) {
44 request = xbt_new(s_smpi_mpi_request_t, 1);
46 request->src = smpi_comm_rank(comm);
49 request->size = smpi_datatype_size(datatype) * count;
50 request->complete = 0;
51 smpi_process_post_send(comm, request);
52 request->pair = SIMIX_network_isend(request->rdv, request->size, -1.0, buf, request->size, request);
56 MPI_Request smpi_mpi_irecv(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm) {
59 request = xbt_new(s_smpi_mpi_request_t, 1);
62 request->dst = smpi_comm_rank(comm);
64 request->size = smpi_datatype_size(datatype) * count;
65 request->complete = 0;
66 smpi_process_post_recv(request);
67 request->pair = SIMIX_network_irecv(request->rdv, buf, &request->size);
71 void smpi_mpi_recv(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm, MPI_Status* status) {
74 request = smpi_mpi_irecv(buf, count, datatype, src, tag, comm);
75 smpi_mpi_wait(&request, status);
78 void smpi_mpi_send(void* buf, int count, MPI_Datatype datatype, int src, int tag, MPI_Comm comm) {
81 request = smpi_mpi_isend(buf, count, datatype, src, tag, comm);
82 smpi_mpi_wait(&request, MPI_STATUS_IGNORE);
85 void smpi_mpi_sendrecv(void* sendbuf, int sendcount, MPI_Datatype sendtype, int dst, int sendtag, void* recvbuf, int recvcount, MPI_Datatype recvtype, int src, int recvtag, MPI_Comm comm, MPI_Status* status) {
86 MPI_Request requests[2];
89 requests[0] = smpi_mpi_isend(sendbuf, sendcount, sendtype, dst, sendtag, comm);
90 requests[1] = smpi_mpi_irecv(recvbuf, recvcount, recvtype, src, recvtag, comm);
91 smpi_mpi_waitall(2, requests, stats);
92 if(status != MPI_STATUS_IGNORE) {
93 // Copy receive status
94 memcpy(status, &stats[1], sizeof(MPI_Status));
98 static void finish_wait(MPI_Request* request, MPI_Status* status) {
99 MPI_Request data = (MPI_Request)SIMIX_communication_get_data((*request)->pair);
101 xbt_assert0(data != MPI_REQUEST_NULL, "Erroneous situation");
102 if(status != MPI_STATUS_IGNORE) {
103 status->MPI_SOURCE = (*request)->src;
104 status->MPI_TAG = (*request)->tag;
105 status->MPI_ERROR = MPI_SUCCESS;
107 DEBUG3("finishing wait for %p [data = %p, complete = %d]", *request, data, data->complete);
108 // data == *request if sender is first to finish its wait
109 // data != *request if receiver is first to finish its wait
110 if(data->complete == 0) {
111 // first arrives here
113 if(data != *request) {
114 // receveiver cleans its part
118 // second arrives here
119 if(data != *request) {
120 // receiver cleans everything
125 *request = MPI_REQUEST_NULL;
128 int smpi_mpi_test(MPI_Request* request, MPI_Status* status) {
129 MPI_Request data = (MPI_Request)SIMIX_communication_get_data((*request)->pair);
130 int flag = data && data->complete == 1;
133 SIMIX_communication_destroy((*request)->pair);
134 finish_wait(request, status);
139 int smpi_mpi_testany(int count, MPI_Request requests[], int* index, MPI_Status* status) {
143 *index = MPI_UNDEFINED;
145 for(i = 0; i < count; i++) {
146 if(requests[i] != MPI_REQUEST_NULL) {
147 data = (MPI_Request)SIMIX_communication_get_data(requests[i]->pair);
148 if(data != MPI_REQUEST_NULL && data->complete == 1) {
149 SIMIX_communication_destroy(requests[i]->pair);
150 finish_wait(&requests[i], status);
160 void smpi_mpi_wait(MPI_Request* request, MPI_Status* status) {
161 MPI_Request data = (MPI_Request)SIMIX_communication_get_data((*request)->pair);
163 DEBUG6("wait for request %p (%p: %p) [src = %d, dst = %d, tag = %d]",
164 *request, (*request)->pair, data, (*request)->src, (*request)->dst, (*request)->tag);
165 // data is null if receiver waits before sender enters the rdv
166 if(data == MPI_REQUEST_NULL || data->complete == 0) {
167 SIMIX_network_wait((*request)->pair, -1.0);
169 SIMIX_communication_destroy((*request)->pair);
171 finish_wait(request, status);
174 int smpi_mpi_waitany(int count, MPI_Request requests[], MPI_Status* status) {
180 index = MPI_UNDEFINED;
182 // First check for already completed requests
183 for(i = 0; i < count; i++) {
184 if(requests[i] != MPI_REQUEST_NULL) {
185 data = (MPI_Request)SIMIX_communication_get_data(requests[i]->pair);
186 if(data != MPI_REQUEST_NULL && data->complete == 1) {
188 SIMIX_communication_destroy(requests[index]->pair); // always succeeds (but cleans the simix layer)
193 if(index == MPI_UNDEFINED) {
194 // Otherwise, wait for a request to complete
195 comms = xbt_dynar_new(sizeof(smx_comm_t), NULL);
196 map = xbt_new(int, count);
198 DEBUG0("Wait for one of");
199 for(i = 0; i < count; i++) {
200 if(requests[i] != MPI_REQUEST_NULL && requests[i]->complete == 0) {
201 DEBUG4(" request %p [src = %d, dst = %d, tag = %d]",
202 requests[i], requests[i]->src, requests[i]->dst, requests[i]->tag);
203 xbt_dynar_push(comms, &requests[i]->pair);
209 index = SIMIX_network_waitany(comms);
213 xbt_dynar_free_container(&comms);
215 if(index != MPI_UNDEFINED) {
216 finish_wait(&requests[index], status);
222 void smpi_mpi_waitall(int count, MPI_Request requests[], MPI_Status status[]) {
227 index = smpi_mpi_waitany(count, requests, &stat);
228 if(index == MPI_UNDEFINED) {
231 if(status != MPI_STATUS_IGNORE) {
232 memcpy(&status[index], &stat, sizeof(stat));
234 // Move the last request to the found position
235 requests[index] = requests[count - 1];
236 requests[count - 1] = MPI_REQUEST_NULL;
241 int smpi_mpi_waitsome(int incount, MPI_Request requests[], int* indices, MPI_Status status[]) {
246 for(i = 0; i < count; i++) {
247 if(requests[i] != MPI_REQUEST_NULL) {
248 data = (MPI_Request)SIMIX_communication_get_data(requests[i]->pair);
249 if(data != MPI_REQUEST_NULL && data->complete == 1) {
250 finish_wait(&requests[i], status != MPI_STATUS_IGNORE ? &status[i] : MPI_STATUS_IGNORE);
259 void smpi_mpi_bcast(void* buf, int count, MPI_Datatype datatype, int root, MPI_Comm comm) {
260 // arity=2: a binary tree, arity=4 seem to be a good setting (see P2P-MPI))
261 nary_tree_bcast(buf, count, datatype, root, comm, 4);
264 void smpi_mpi_barrier(MPI_Comm comm) {
265 // arity=2: a binary tree, arity=4 seem to be a good setting (see P2P-MPI))
266 nary_tree_barrier(comm, 4);
269 void smpi_mpi_gather(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm) {
270 int system_tag = 666;
271 int rank, size, src, index, sendsize, recvsize;
272 MPI_Request* requests;
274 rank = smpi_comm_rank(comm);
275 size = smpi_comm_size(comm);
277 // Send buffer to root
278 smpi_mpi_send(sendbuf, sendcount, sendtype, root, system_tag, comm);
280 sendsize = smpi_datatype_size(sendtype);
281 recvsize = smpi_datatype_size(recvtype);
282 // Local copy from root
283 memcpy(&((char*)recvbuf)[root * recvcount * recvsize], sendbuf, sendcount * sendsize * sizeof(char));
284 // Receive buffers from senders
285 requests = xbt_new(MPI_Request, size - 1);
287 for(src = 0; src < size; src++) {
289 requests[index] = smpi_mpi_irecv(&((char*)recvbuf)[src * recvcount * recvsize], recvcount, recvtype, src, system_tag, comm);
293 // Wait for completion of irecv's.
294 smpi_mpi_waitall(size - 1, requests, MPI_STATUS_IGNORE);
299 void smpi_mpi_gatherv(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int* recvcounts, int* displs, MPI_Datatype recvtype, int root, MPI_Comm comm) {
300 int system_tag = 666;
301 int rank, size, src, index, sendsize;
302 MPI_Request* requests;
304 rank = smpi_comm_rank(comm);
305 size = smpi_comm_size(comm);
307 // Send buffer to root
308 smpi_mpi_send(sendbuf, sendcount, sendtype, root, system_tag, comm);
310 sendsize = smpi_datatype_size(sendtype);
311 // Local copy from root
312 memcpy(&((char*)recvbuf)[displs[root]], sendbuf, sendcount * sendsize * sizeof(char));
313 // Receive buffers from senders
314 requests = xbt_new(MPI_Request, size - 1);
316 for(src = 0; src < size; src++) {
318 requests[index] = smpi_mpi_irecv(&((char*)recvbuf)[displs[src]], recvcounts[src], recvtype, src, system_tag, comm);
322 // Wait for completion of irecv's.
323 smpi_mpi_waitall(size - 1, requests, MPI_STATUS_IGNORE);
328 void smpi_mpi_allgather(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, MPI_Comm comm) {
329 int system_tag = 666;
330 int rank, size, other, index, sendsize, recvsize;
331 MPI_Request* requests;
333 rank = smpi_comm_rank(comm);
334 size = smpi_comm_size(comm);
335 sendsize = smpi_datatype_size(sendtype);
336 recvsize = smpi_datatype_size(recvtype);
337 // Local copy from self
338 memcpy(&((char*)recvbuf)[rank * recvcount * recvsize], sendbuf, sendcount * sendsize * sizeof(char));
339 // Send/Recv buffers to/from others;
340 requests = xbt_new(MPI_Request, 2 * (size - 1));
342 for(other = 0; other < size; other++) {
344 requests[index] = smpi_mpi_isend(sendbuf, sendcount, sendtype, other, system_tag, comm);
346 requests[index] = smpi_mpi_irecv(&((char*)recvbuf)[other * recvcount * recvsize], recvcount, recvtype, other, system_tag, comm);
350 // Wait for completion of all comms.
351 smpi_mpi_waitall(2 * (size - 1), requests, MPI_STATUS_IGNORE);
355 void smpi_mpi_allgatherv(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int* recvcounts, int* displs, MPI_Datatype recvtype, MPI_Comm comm) {
356 int system_tag = 666;
357 int rank, size, other, index, sendsize, recvsize;
358 MPI_Request* requests;
360 rank = smpi_comm_rank(comm);
361 size = smpi_comm_size(comm);
362 sendsize = smpi_datatype_size(sendtype);
363 recvsize = smpi_datatype_size(recvtype);
364 // Local copy from self
365 memcpy(&((char*)recvbuf)[displs[rank]], sendbuf, sendcount * sendsize * sizeof(char));
366 // Send buffers to others;
367 requests = xbt_new(MPI_Request, 2 * (size - 1));
369 for(other = 0; other < size; other++) {
371 requests[index] = smpi_mpi_isend(sendbuf, sendcount, sendtype, other, system_tag, comm);
373 requests[index] = smpi_mpi_irecv(&((char*)recvbuf)[displs[other]], recvcounts[other], recvtype, other, system_tag, comm);
377 // Wait for completion of all comms.
378 smpi_mpi_waitall(2 * (size - 1), requests, MPI_STATUS_IGNORE);
382 void smpi_mpi_scatter(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm) {
383 int system_tag = 666;
384 int rank, size, dst, index, sendsize, recvsize;
385 MPI_Request* requests;
387 rank = smpi_comm_rank(comm);
388 size = smpi_comm_size(comm);
390 // Recv buffer from root
391 smpi_mpi_recv(recvbuf, recvcount, recvtype, root, system_tag, comm, MPI_STATUS_IGNORE);
393 sendsize = smpi_datatype_size(sendtype);
394 recvsize = smpi_datatype_size(recvtype);
395 // Local copy from root
396 memcpy(recvbuf, &((char*)sendbuf)[root * sendcount * sendsize], recvcount * recvsize * sizeof(char));
397 // Send buffers to receivers
398 requests = xbt_new(MPI_Request, size - 1);
400 for(dst = 0; dst < size; dst++) {
402 requests[index] = smpi_mpi_isend(&((char*)sendbuf)[dst * sendcount * sendsize], sendcount, sendtype, dst, system_tag, comm);
406 // Wait for completion of isend's.
407 smpi_mpi_waitall(size - 1, requests, MPI_STATUS_IGNORE);
412 void smpi_mpi_scatterv(void* sendbuf, int* sendcounts, int* displs, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm) {
413 int system_tag = 666;
414 int rank, size, dst, index, sendsize, recvsize;
415 MPI_Request* requests;
417 rank = smpi_comm_rank(comm);
418 size = smpi_comm_size(comm);
420 // Recv buffer from root
421 smpi_mpi_recv(recvbuf, recvcount, recvtype, root, system_tag, comm, MPI_STATUS_IGNORE);
423 sendsize = smpi_datatype_size(sendtype);
424 recvsize = smpi_datatype_size(recvtype);
425 // Local copy from root
426 memcpy(recvbuf, &((char*)sendbuf)[displs[root]], recvcount * recvsize * sizeof(char));
427 // Send buffers to receivers
428 requests = xbt_new(MPI_Request, size - 1);
430 for(dst = 0; dst < size; dst++) {
432 requests[index] = smpi_mpi_isend(&((char*)sendbuf)[displs[dst]], sendcounts[dst], sendtype, dst, system_tag, comm);
436 // Wait for completion of isend's.
437 smpi_mpi_waitall(size - 1, requests, MPI_STATUS_IGNORE);
442 void smpi_mpi_reduce(void* sendbuf, void* recvbuf, int count, MPI_Datatype datatype, MPI_Op op, int root, MPI_Comm comm) {
443 int system_tag = 666;
444 int rank, size, src, index, datasize;
445 MPI_Request* requests;
448 rank = smpi_comm_rank(comm);
449 size = smpi_comm_size(comm);
451 // Send buffer to root
452 smpi_mpi_send(sendbuf, count, datatype, root, system_tag, comm);
454 datasize = smpi_datatype_size(datatype);
455 // Local copy from root
456 memcpy(recvbuf, sendbuf, count * datasize * sizeof(char));
457 // Receive buffers from senders
458 //TODO: make a MPI_barrier here ?
459 requests = xbt_new(MPI_Request, size - 1);
460 tmpbufs = xbt_new(void*, size - 1);
462 for(src = 0; src < size; src++) {
464 tmpbufs[index] = xbt_malloc(count * datasize);
465 requests[index] = smpi_mpi_irecv(tmpbufs[index], count, datatype, src, system_tag, comm);
469 // Wait for completion of irecv's.
470 for(src = 0; src < size - 1; src++) {
471 index = smpi_mpi_waitany(size - 1, requests, MPI_STATUS_IGNORE);
472 if(index == MPI_UNDEFINED) {
475 smpi_op_apply(op, tmpbufs[index], recvbuf, &count, &datatype);
477 for(index = 0; index < size - 1; index++) {
478 xbt_free(tmpbufs[index]);
485 void smpi_mpi_allreduce(void* sendbuf, void* recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm) {
486 smpi_mpi_reduce(sendbuf, recvbuf, count, datatype, op, 0, comm);
487 smpi_mpi_bcast(recvbuf, count, datatype, 0, comm);
490 FIXME: buggy implementation
492 int system_tag = 666;
493 int rank, size, other, index, datasize;
494 MPI_Request* requests;
497 rank = smpi_comm_rank(comm);
498 size = smpi_comm_size(comm);
499 datasize = smpi_datatype_size(datatype);
500 // Local copy from self
501 memcpy(recvbuf, sendbuf, count * datasize * sizeof(char));
502 // Send/Recv buffers to/from others;
503 //TODO: make a MPI_barrier here ?
504 requests = xbt_new(MPI_Request, 2 * (size - 1));
505 tmpbufs = xbt_new(void*, size - 1);
507 for(other = 0; other < size; other++) {
509 tmpbufs[index / 2] = xbt_malloc(count * datasize);
510 requests[index] = smpi_mpi_isend(sendbuf, count, datatype, other, system_tag, comm);
511 requests[index + 1] = smpi_mpi_irecv(tmpbufs[index / 2], count, datatype, other, system_tag, comm);
515 // Wait for completion of all comms.
516 for(other = 0; other < 2 * (size - 1); other++) {
517 index = smpi_mpi_waitany(size - 1, requests, MPI_STATUS_IGNORE);
518 if(index == MPI_UNDEFINED) {
521 if((index & 1) == 1) {
522 // Request is odd: it's a irecv
523 smpi_op_apply(op, tmpbufs[index / 2], recvbuf, &count, &datatype);
526 for(index = 0; index < size - 1; index++) {
527 xbt_free(tmpbufs[index]);