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 finish_wait(request, status);
138 int smpi_mpi_testany(int count, MPI_Request requests[], int* index, MPI_Status* status) {
142 *index = MPI_UNDEFINED;
144 for(i = 0; i < count; i++) {
145 if(requests[i] != MPI_REQUEST_NULL) {
146 data = (MPI_Request)SIMIX_communication_get_data(requests[i]->pair);
147 if(data != MPI_REQUEST_NULL && data->complete == 1) {
148 finish_wait(&requests[i], status);
158 void smpi_mpi_wait(MPI_Request* request, MPI_Status* status) {
159 MPI_Request data = (MPI_Request)SIMIX_communication_get_data((*request)->pair);
161 DEBUG6("wait for request %p (%p: %p) [src = %d, dst = %d, tag = %d]",
162 *request, (*request)->pair, data, (*request)->src, (*request)->dst, (*request)->tag);
163 // data is null if receiver waits before sender enters the rdv
164 if(data == MPI_REQUEST_NULL || data->complete == 0) {
165 SIMIX_network_wait((*request)->pair, -1.0);
167 finish_wait(request, status);
170 int smpi_mpi_waitany(int count, MPI_Request requests[], MPI_Status* status) {
176 index = MPI_UNDEFINED;
178 // First check for already completed requests
179 for(i = 0; i < count; i++) {
180 if(requests[i] != MPI_REQUEST_NULL) {
181 data = (MPI_Request)SIMIX_communication_get_data(requests[i]->pair);
182 if(data != MPI_REQUEST_NULL && data->complete == 1) {
188 if(index == MPI_UNDEFINED) {
189 // Otherwise, wait for a request to complete
190 comms = xbt_dynar_new(sizeof(smx_comm_t), NULL);
191 map = xbt_new(int, count);
193 DEBUG0("Wait for one of");
194 for(i = 0; i < count; i++) {
195 if(requests[i] != MPI_REQUEST_NULL && requests[i]->complete == 0) {
196 DEBUG4(" request %p [src = %d, dst = %d, tag = %d]",
197 requests[i], requests[i]->src, requests[i]->dst, requests[i]->tag);
198 xbt_dynar_push(comms, &requests[i]->pair);
204 index = SIMIX_network_waitany(comms);
208 xbt_dynar_free_container(&comms);
210 if(index != MPI_UNDEFINED) {
211 finish_wait(&requests[index], status);
217 void smpi_mpi_waitall(int count, MPI_Request requests[], MPI_Status status[]) {
222 index = smpi_mpi_waitany(count, requests, &stat);
223 if(index == MPI_UNDEFINED) {
226 if(status != MPI_STATUS_IGNORE) {
227 memcpy(&status[index], &stat, sizeof(stat));
229 // Move the last request to the found position
230 requests[index] = requests[count - 1];
231 requests[count - 1] = MPI_REQUEST_NULL;
236 int smpi_mpi_waitsome(int incount, MPI_Request requests[], int* indices, MPI_Status status[]) {
241 for(i = 0; i < count; i++) {
242 if(requests[i] != MPI_REQUEST_NULL) {
243 data = (MPI_Request)SIMIX_communication_get_data(requests[i]->pair);
244 if(data != MPI_REQUEST_NULL && data->complete == 1) {
245 finish_wait(&requests[i], status != MPI_STATUS_IGNORE ? &status[i] : MPI_STATUS_IGNORE);
254 void smpi_mpi_bcast(void* buf, int count, MPI_Datatype datatype, int root, MPI_Comm comm) {
255 // arity=2: a binary tree, arity=4 seem to be a good setting (see P2P-MPI))
256 nary_tree_bcast(buf, count, datatype, root, comm, 4);
259 void smpi_mpi_barrier(MPI_Comm comm) {
260 // arity=2: a binary tree, arity=4 seem to be a good setting (see P2P-MPI))
261 nary_tree_barrier(comm, 4);
264 void smpi_mpi_gather(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm) {
265 int system_tag = 666;
266 int rank, size, src, index, sendsize, recvsize;
267 MPI_Request* requests;
269 rank = smpi_comm_rank(comm);
270 size = smpi_comm_size(comm);
272 // Send buffer to root
273 smpi_mpi_send(sendbuf, sendcount, sendtype, root, system_tag, comm);
275 sendsize = smpi_datatype_size(sendtype);
276 recvsize = smpi_datatype_size(recvtype);
277 // Local copy from root
278 memcpy(&((char*)recvbuf)[root * recvcount * recvsize], sendbuf, sendcount * sendsize * sizeof(char));
279 // Receive buffers from senders
280 requests = xbt_new(MPI_Request, size - 1);
282 for(src = 0; src < size; src++) {
284 requests[index] = smpi_mpi_irecv(&((char*)recvbuf)[src * recvcount * recvsize], recvcount, recvtype, src, system_tag, comm);
288 // Wait for completion of irecv's.
289 smpi_mpi_waitall(size - 1, requests, MPI_STATUS_IGNORE);
294 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) {
295 int system_tag = 666;
296 int rank, size, src, index, sendsize;
297 MPI_Request* requests;
299 rank = smpi_comm_rank(comm);
300 size = smpi_comm_size(comm);
302 // Send buffer to root
303 smpi_mpi_send(sendbuf, sendcount, sendtype, root, system_tag, comm);
305 sendsize = smpi_datatype_size(sendtype);
306 // Local copy from root
307 memcpy(&((char*)recvbuf)[displs[root]], sendbuf, sendcount * sendsize * sizeof(char));
308 // Receive buffers from senders
309 requests = xbt_new(MPI_Request, size - 1);
311 for(src = 0; src < size; src++) {
313 requests[index] = smpi_mpi_irecv(&((char*)recvbuf)[displs[src]], recvcounts[src], recvtype, src, system_tag, comm);
317 // Wait for completion of irecv's.
318 smpi_mpi_waitall(size - 1, requests, MPI_STATUS_IGNORE);
323 void smpi_mpi_allgather(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, MPI_Comm comm) {
324 int system_tag = 666;
325 int rank, size, other, index, sendsize, recvsize;
326 MPI_Request* requests;
328 rank = smpi_comm_rank(comm);
329 size = smpi_comm_size(comm);
330 sendsize = smpi_datatype_size(sendtype);
331 recvsize = smpi_datatype_size(recvtype);
332 // Local copy from self
333 memcpy(&((char*)recvbuf)[rank * recvcount * recvsize], sendbuf, sendcount * sendsize * sizeof(char));
334 // Send/Recv buffers to/from others;
335 requests = xbt_new(MPI_Request, 2 * (size - 1));
337 for(other = 0; other < size; other++) {
339 requests[index] = smpi_mpi_isend(sendbuf, sendcount, sendtype, other, system_tag, comm);
341 requests[index] = smpi_mpi_irecv(&((char*)recvbuf)[other * recvcount * recvsize], recvcount, recvtype, other, system_tag, comm);
345 // Wait for completion of all comms.
346 smpi_mpi_waitall(2 * (size - 1), requests, MPI_STATUS_IGNORE);
350 void smpi_mpi_allgatherv(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int* recvcounts, int* displs, MPI_Datatype recvtype, MPI_Comm comm) {
351 int system_tag = 666;
352 int rank, size, other, index, sendsize, recvsize;
353 MPI_Request* requests;
355 rank = smpi_comm_rank(comm);
356 size = smpi_comm_size(comm);
357 sendsize = smpi_datatype_size(sendtype);
358 recvsize = smpi_datatype_size(recvtype);
359 // Local copy from self
360 memcpy(&((char*)recvbuf)[displs[rank]], sendbuf, sendcount * sendsize * sizeof(char));
361 // Send buffers to others;
362 requests = xbt_new(MPI_Request, 2 * (size - 1));
364 for(other = 0; other < size; other++) {
366 requests[index] = smpi_mpi_isend(sendbuf, sendcount, sendtype, other, system_tag, comm);
368 requests[index] = smpi_mpi_irecv(&((char*)recvbuf)[displs[other]], recvcounts[other], recvtype, other, system_tag, comm);
372 // Wait for completion of all comms.
373 smpi_mpi_waitall(2 * (size - 1), requests, MPI_STATUS_IGNORE);
377 void smpi_mpi_scatter(void* sendbuf, int sendcount, MPI_Datatype sendtype, void* recvbuf, int recvcount, MPI_Datatype recvtype, int root, MPI_Comm comm) {
378 int system_tag = 666;
379 int rank, size, dst, index, sendsize, recvsize;
380 MPI_Request* requests;
382 rank = smpi_comm_rank(comm);
383 size = smpi_comm_size(comm);
385 // Recv buffer from root
386 smpi_mpi_recv(recvbuf, recvcount, recvtype, root, system_tag, comm, MPI_STATUS_IGNORE);
388 sendsize = smpi_datatype_size(sendtype);
389 recvsize = smpi_datatype_size(recvtype);
390 // Local copy from root
391 memcpy(recvbuf, &((char*)sendbuf)[root * sendcount * sendsize], recvcount * recvsize * sizeof(char));
392 // Send buffers to receivers
393 requests = xbt_new(MPI_Request, size - 1);
395 for(dst = 0; dst < size; dst++) {
397 requests[index] = smpi_mpi_isend(&((char*)sendbuf)[dst * sendcount * sendsize], sendcount, sendtype, dst, system_tag, comm);
401 // Wait for completion of isend's.
402 smpi_mpi_waitall(size - 1, requests, MPI_STATUS_IGNORE);
407 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) {
408 int system_tag = 666;
409 int rank, size, dst, index, sendsize, recvsize;
410 MPI_Request* requests;
412 rank = smpi_comm_rank(comm);
413 size = smpi_comm_size(comm);
415 // Recv buffer from root
416 smpi_mpi_recv(recvbuf, recvcount, recvtype, root, system_tag, comm, MPI_STATUS_IGNORE);
418 sendsize = smpi_datatype_size(sendtype);
419 recvsize = smpi_datatype_size(recvtype);
420 // Local copy from root
421 memcpy(recvbuf, &((char*)sendbuf)[displs[root]], recvcount * recvsize * sizeof(char));
422 // Send buffers to receivers
423 requests = xbt_new(MPI_Request, size - 1);
425 for(dst = 0; dst < size; dst++) {
427 requests[index] = smpi_mpi_isend(&((char*)sendbuf)[displs[dst]], sendcounts[dst], sendtype, dst, system_tag, comm);
431 // Wait for completion of isend's.
432 smpi_mpi_waitall(size - 1, requests, MPI_STATUS_IGNORE);
437 void smpi_mpi_reduce(void* sendbuf, void* recvbuf, int count, MPI_Datatype datatype, MPI_Op op, int root, MPI_Comm comm) {
438 int system_tag = 666;
439 int rank, size, src, index, datasize;
440 MPI_Request* requests;
443 rank = smpi_comm_rank(comm);
444 size = smpi_comm_size(comm);
446 // Send buffer to root
447 smpi_mpi_send(sendbuf, count, datatype, root, system_tag, comm);
449 datasize = smpi_datatype_size(datatype);
450 // Local copy from root
451 memcpy(recvbuf, sendbuf, count * datasize * sizeof(char));
452 // Receive buffers from senders
453 //TODO: make a MPI_barrier here ?
454 requests = xbt_new(MPI_Request, size - 1);
455 tmpbufs = xbt_new(void*, size - 1);
457 for(src = 0; src < size; src++) {
459 tmpbufs[index] = xbt_malloc(count * datasize);
460 requests[index] = smpi_mpi_irecv(tmpbufs[index], count, datatype, src, system_tag, comm);
464 // Wait for completion of irecv's.
465 for(src = 0; src < size - 1; src++) {
466 index = smpi_mpi_waitany(size - 1, requests, MPI_STATUS_IGNORE);
467 if(index == MPI_UNDEFINED) {
470 smpi_op_apply(op, tmpbufs[index], recvbuf, &count, &datatype);
472 for(index = 0; index < size - 1; index++) {
473 xbt_free(tmpbufs[index]);
480 void smpi_mpi_allreduce(void* sendbuf, void* recvbuf, int count, MPI_Datatype datatype, MPI_Op op, MPI_Comm comm) {
481 smpi_mpi_reduce(sendbuf, recvbuf, count, datatype, op, 0, comm);
482 smpi_mpi_bcast(recvbuf, count, datatype, 0, comm);
485 FIXME: buggy implementation
487 int system_tag = 666;
488 int rank, size, other, index, datasize;
489 MPI_Request* requests;
492 rank = smpi_comm_rank(comm);
493 size = smpi_comm_size(comm);
494 datasize = smpi_datatype_size(datatype);
495 // Local copy from self
496 memcpy(recvbuf, sendbuf, count * datasize * sizeof(char));
497 // Send/Recv buffers to/from others;
498 //TODO: make a MPI_barrier here ?
499 requests = xbt_new(MPI_Request, 2 * (size - 1));
500 tmpbufs = xbt_new(void*, size - 1);
502 for(other = 0; other < size; other++) {
504 tmpbufs[index / 2] = xbt_malloc(count * datasize);
505 requests[index] = smpi_mpi_isend(sendbuf, count, datatype, other, system_tag, comm);
506 requests[index + 1] = smpi_mpi_irecv(tmpbufs[index / 2], count, datatype, other, system_tag, comm);
510 // Wait for completion of all comms.
511 for(other = 0; other < 2 * (size - 1); other++) {
512 index = smpi_mpi_waitany(size - 1, requests, MPI_STATUS_IGNORE);
513 if(index == MPI_UNDEFINED) {
516 if((index & 1) == 1) {
517 // Request is odd: it's a irecv
518 smpi_op_apply(op, tmpbufs[index / 2], recvbuf, &count, &datatype);
521 for(index = 0; index < size - 1; index++) {
522 xbt_free(tmpbufs[index]);