1 /* Copyright (c) 2009-2018. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include "smpi_coll.hpp"
7 #include "smpi_comm.hpp"
8 #include "smpi_datatype.hpp"
9 #include "smpi_group.hpp"
10 #include "smpi_request.hpp"
11 #include "xbt/replay.hpp"
12 #include <simgrid/smpi/replay.hpp>
13 #include <src/smpi/include/private.hpp>
17 #include <unordered_map>
22 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_replay, smpi, "Trace Replay with SMPI");
24 // From https://stackoverflow.com/questions/7110301/generic-hash-for-tuples-in-unordered-map-unordered-set
25 // This is all just to make std::unordered_map work with std::tuple. If we need this in other places,
26 // this could go into a header file.
27 namespace hash_tuple {
28 template <typename TT> class hash {
30 size_t operator()(TT const& tt) const { return std::hash<TT>()(tt); }
33 template <class T> inline void hash_combine(std::size_t& seed, T const& v)
35 seed ^= hash_tuple::hash<T>()(v) + 0x9e3779b9 + (seed << 6) + (seed >> 2);
38 // Recursive template code derived from Matthieu M.
39 template <class Tuple, size_t Index = std::tuple_size<Tuple>::value - 1> class HashValueImpl {
41 static void apply(size_t& seed, Tuple const& tuple)
43 HashValueImpl<Tuple, Index - 1>::apply(seed, tuple);
44 hash_combine(seed, std::get<Index>(tuple));
48 template <class Tuple> class HashValueImpl<Tuple, 0> {
50 static void apply(size_t& seed, Tuple const& tuple) { hash_combine(seed, std::get<0>(tuple)); }
53 template <typename... TT> class hash<std::tuple<TT...>> {
55 size_t operator()(std::tuple<TT...> const& tt) const
58 HashValueImpl<std::tuple<TT...>>::apply(seed, tt);
64 typedef std::tuple</*sender*/ int, /* reciever */ int, /* tag */int> req_key_t;
65 typedef std::unordered_map<req_key_t, MPI_Request, hash_tuple::hash<std::tuple<int,int,int>>> req_storage_t;
67 void log_timed_action(simgrid::xbt::ReplayAction& action, double clock)
69 if (XBT_LOG_ISENABLED(smpi_replay, xbt_log_priority_verbose)){
70 std::string s = boost::algorithm::join(action, " ");
71 XBT_VERB("%s %f", s.c_str(), smpi_process()->simulated_elapsed() - clock);
76 static double parse_double(std::string string)
78 return xbt_str_parse_double(string.c_str(), "%s is not a double");
85 MPI_Datatype MPI_DEFAULT_TYPE;
87 class RequestStorage {
98 req_storage_t& get_store()
103 void get_requests(std::vector<MPI_Request>& vec)
105 for (auto& pair : store) {
106 auto& req = pair.second;
107 auto my_proc_id = simgrid::s4u::this_actor::get_pid();
108 if (req != MPI_REQUEST_NULL && (req->src() == my_proc_id || req->dst() == my_proc_id)) {
109 vec.push_back(pair.second);
110 pair.second->print_request("MM");
115 MPI_Request find(int src, int dst, int tag)
117 req_storage_t::iterator it = store.find(req_key_t(src, dst, tag));
118 return (it == store.end()) ? MPI_REQUEST_NULL : it->second;
121 void remove(MPI_Request req)
123 if (req == MPI_REQUEST_NULL) return;
125 store.erase(req_key_t(req->src()-1, req->dst()-1, req->tag()));
128 void add(MPI_Request req)
130 if (req != MPI_REQUEST_NULL) // Can and does happen in the case of TestAction
131 store.insert({req_key_t(req->src()-1, req->dst()-1, req->tag()), req});
134 /* Sometimes we need to re-insert MPI_REQUEST_NULL but we still need src,dst and tag */
135 void addNullRequest(int src, int dst, int tag)
137 store.insert({req_key_t(src, dst, tag), MPI_REQUEST_NULL});
141 void WaitTestParser::parse(simgrid::xbt::ReplayAction& action, std::string name)
143 CHECK_ACTION_PARAMS(action, 3, 0)
144 src = std::stoi(action[2]);
145 dst = std::stoi(action[3]);
146 tag = std::stoi(action[4]);
149 void SendRecvParser::parse(simgrid::xbt::ReplayAction& action, std::string name)
151 CHECK_ACTION_PARAMS(action, 3, 1)
152 partner = std::stoi(action[2]);
153 tag = std::stoi(action[3]);
154 size = parse_double(action[4]);
155 if (action.size() > 5)
156 datatype1 = simgrid::smpi::Datatype::decode(action[5]);
159 void ComputeParser::parse(simgrid::xbt::ReplayAction& action, std::string name)
161 CHECK_ACTION_PARAMS(action, 1, 0)
162 flops = parse_double(action[2]);
165 void BcastArgParser::parse(simgrid::xbt::ReplayAction& action, std::string name)
167 CHECK_ACTION_PARAMS(action, 1, 2)
168 size = parse_double(action[2]);
169 root = (action.size() > 3) ? std::stoi(action[3]) : 0;
170 if (action.size() > 4)
171 datatype1 = simgrid::smpi::Datatype::decode(action[4]);
174 void ReduceArgParser::parse(simgrid::xbt::ReplayAction& action, std::string name)
176 CHECK_ACTION_PARAMS(action, 2, 2)
177 comm_size = parse_double(action[2]);
178 comp_size = parse_double(action[3]);
179 root = (action.size() > 4) ? std::stoi(action[4]) : 0;
180 if (action.size() > 5)
181 datatype1 = simgrid::smpi::Datatype::decode(action[5]);
184 void AllReduceArgParser::parse(simgrid::xbt::ReplayAction& action, std::string name)
186 CHECK_ACTION_PARAMS(action, 2, 1)
187 comm_size = parse_double(action[2]);
188 comp_size = parse_double(action[3]);
189 if (action.size() > 4)
190 datatype1 = simgrid::smpi::Datatype::decode(action[4]);
193 void AllToAllArgParser::parse(simgrid::xbt::ReplayAction& action, std::string name)
195 CHECK_ACTION_PARAMS(action, 2, 1)
196 comm_size = MPI_COMM_WORLD->size();
197 send_size = parse_double(action[2]);
198 recv_size = parse_double(action[3]);
200 if (action.size() > 4)
201 datatype1 = simgrid::smpi::Datatype::decode(action[4]);
202 if (action.size() > 5)
203 datatype2 = simgrid::smpi::Datatype::decode(action[5]);
206 void GatherArgParser::parse(simgrid::xbt::ReplayAction& action, std::string name)
208 /* The structure of the gather action for the rank 0 (total 4 processes) is the following:
211 1) 68 is the sendcounts
212 2) 68 is the recvcounts
213 3) 0 is the root node
214 4) 0 is the send datatype id, see simgrid::smpi::Datatype::decode()
215 5) 0 is the recv datatype id, see simgrid::smpi::Datatype::decode()
217 CHECK_ACTION_PARAMS(action, 2, 3)
218 comm_size = MPI_COMM_WORLD->size();
219 send_size = parse_double(action[2]);
220 recv_size = parse_double(action[3]);
222 if (name == "gather") {
223 root = (action.size() > 4) ? std::stoi(action[4]) : 0;
224 if (action.size() > 5)
225 datatype1 = simgrid::smpi::Datatype::decode(action[5]);
226 if (action.size() > 6)
227 datatype2 = simgrid::smpi::Datatype::decode(action[6]);
229 if (action.size() > 4)
230 datatype1 = simgrid::smpi::Datatype::decode(action[4]);
231 if (action.size() > 5)
232 datatype2 = simgrid::smpi::Datatype::decode(action[5]);
236 void GatherVArgParser::parse(simgrid::xbt::ReplayAction& action, std::string name)
238 /* The structure of the gatherv action for the rank 0 (total 4 processes) is the following:
239 0 gather 68 68 10 10 10 0 0 0
241 1) 68 is the sendcount
242 2) 68 10 10 10 is the recvcounts
243 3) 0 is the root node
244 4) 0 is the send datatype id, see simgrid::smpi::Datatype::decode()
245 5) 0 is the recv datatype id, see simgrid::smpi::Datatype::decode()
247 comm_size = MPI_COMM_WORLD->size();
248 CHECK_ACTION_PARAMS(action, comm_size + 1, 2)
249 send_size = parse_double(action[2]);
250 disps = std::vector<int>(comm_size, 0);
251 recvcounts = std::shared_ptr<std::vector<int>>(new std::vector<int>(comm_size));
253 if (name == "gatherv") {
254 root = (action.size() > 3 + comm_size) ? std::stoi(action[3 + comm_size]) : 0;
255 if (action.size() > 4 + comm_size)
256 datatype1 = simgrid::smpi::Datatype::decode(action[4 + comm_size]);
257 if (action.size() > 5 + comm_size)
258 datatype2 = simgrid::smpi::Datatype::decode(action[5 + comm_size]);
260 int datatype_index = 0;
262 /* The 3 comes from "0 gather <sendcount>", which must always be present.
263 * The + comm_size is the recvcounts array, which must also be present
265 if (action.size() > 3 + comm_size + comm_size) { /* datatype + disp are specified */
266 datatype_index = 3 + comm_size;
267 disp_index = datatype_index + 1;
268 datatype1 = simgrid::smpi::Datatype::decode(action[datatype_index]);
269 datatype2 = simgrid::smpi::Datatype::decode(action[datatype_index]);
270 } else if (action.size() >
271 3 + comm_size + 2) { /* disps specified; datatype is not specified; use the default one */
272 disp_index = 3 + comm_size;
273 } else if (action.size() > 3 + comm_size) { /* only datatype, no disp specified */
274 datatype_index = 3 + comm_size;
275 datatype1 = simgrid::smpi::Datatype::decode(action[datatype_index]);
276 datatype2 = simgrid::smpi::Datatype::decode(action[datatype_index]);
279 if (disp_index != 0) {
280 for (unsigned int i = 0; i < comm_size; i++)
281 disps[i] = std::stoi(action[disp_index + i]);
285 for (unsigned int i = 0; i < comm_size; i++) {
286 (*recvcounts)[i] = std::stoi(action[i + 3]);
288 recv_size_sum = std::accumulate(recvcounts->begin(), recvcounts->end(), 0);
291 void ScatterArgParser::parse(simgrid::xbt::ReplayAction& action, std::string name)
293 /* The structure of the scatter action for the rank 0 (total 4 processes) is the following:
296 1) 68 is the sendcounts
297 2) 68 is the recvcounts
298 3) 0 is the root node
299 4) 0 is the send datatype id, see simgrid::smpi::Datatype::decode()
300 5) 0 is the recv datatype id, see simgrid::smpi::Datatype::decode()
302 CHECK_ACTION_PARAMS(action, 2, 3)
303 comm_size = MPI_COMM_WORLD->size();
304 send_size = parse_double(action[2]);
305 recv_size = parse_double(action[3]);
306 root = (action.size() > 4) ? std::stoi(action[4]) : 0;
307 if (action.size() > 5)
308 datatype1 = simgrid::smpi::Datatype::decode(action[5]);
309 if (action.size() > 6)
310 datatype2 = simgrid::smpi::Datatype::decode(action[6]);
313 void ScatterVArgParser::parse(simgrid::xbt::ReplayAction& action, std::string name)
315 /* The structure of the scatterv action for the rank 0 (total 4 processes) is the following:
316 0 gather 68 10 10 10 68 0 0 0
318 1) 68 10 10 10 is the sendcounts
319 2) 68 is the recvcount
320 3) 0 is the root node
321 4) 0 is the send datatype id, see simgrid::smpi::Datatype::decode()
322 5) 0 is the recv datatype id, see simgrid::smpi::Datatype::decode()
324 CHECK_ACTION_PARAMS(action, comm_size + 1, 2)
325 recv_size = parse_double(action[2 + comm_size]);
326 disps = std::vector<int>(comm_size, 0);
327 sendcounts = std::shared_ptr<std::vector<int>>(new std::vector<int>(comm_size));
329 if (action.size() > 5 + comm_size)
330 datatype1 = simgrid::smpi::Datatype::decode(action[4 + comm_size]);
331 if (action.size() > 5 + comm_size)
332 datatype2 = simgrid::smpi::Datatype::decode(action[5]);
334 for (unsigned int i = 0; i < comm_size; i++) {
335 (*sendcounts)[i] = std::stoi(action[i + 2]);
337 send_size_sum = std::accumulate(sendcounts->begin(), sendcounts->end(), 0);
338 root = (action.size() > 3 + comm_size) ? std::stoi(action[3 + comm_size]) : 0;
341 void ReduceScatterArgParser::parse(simgrid::xbt::ReplayAction& action, std::string name)
343 /* The structure of the reducescatter action for the rank 0 (total 4 processes) is the following:
344 0 reducescatter 275427 275427 275427 204020 11346849 0
346 1) The first four values after the name of the action declare the recvcounts array
347 2) The value 11346849 is the amount of instructions
348 3) The last value corresponds to the datatype, see simgrid::smpi::Datatype::decode().
350 comm_size = MPI_COMM_WORLD->size();
351 CHECK_ACTION_PARAMS(action, comm_size + 1, 1)
352 comp_size = parse_double(action[2 + comm_size]);
353 recvcounts = std::shared_ptr<std::vector<int>>(new std::vector<int>(comm_size));
354 if (action.size() > 3 + comm_size)
355 datatype1 = simgrid::smpi::Datatype::decode(action[3 + comm_size]);
357 for (unsigned int i = 0; i < comm_size; i++) {
358 recvcounts->push_back(std::stoi(action[i + 2]));
360 recv_size_sum = std::accumulate(recvcounts->begin(), recvcounts->end(), 0);
363 void AllToAllVArgParser::parse(simgrid::xbt::ReplayAction& action, std::string name)
365 /* The structure of the alltoallv action for the rank 0 (total 4 processes) is the following:
366 0 alltoallv 100 1 7 10 12 100 1 70 10 5
368 1) 100 is the size of the send buffer *sizeof(int),
369 2) 1 7 10 12 is the sendcounts array
370 3) 100*sizeof(int) is the size of the receiver buffer
371 4) 1 70 10 5 is the recvcounts array
373 comm_size = MPI_COMM_WORLD->size();
374 CHECK_ACTION_PARAMS(action, 2 * comm_size + 2, 2)
375 sendcounts = std::shared_ptr<std::vector<int>>(new std::vector<int>(comm_size));
376 recvcounts = std::shared_ptr<std::vector<int>>(new std::vector<int>(comm_size));
377 senddisps = std::vector<int>(comm_size, 0);
378 recvdisps = std::vector<int>(comm_size, 0);
380 if (action.size() > 5 + 2 * comm_size)
381 datatype1 = simgrid::smpi::Datatype::decode(action[4 + 2 * comm_size]);
382 if (action.size() > 5 + 2 * comm_size)
383 datatype2 = simgrid::smpi::Datatype::decode(action[5 + 2 * comm_size]);
385 send_buf_size = parse_double(action[2]);
386 recv_buf_size = parse_double(action[3 + comm_size]);
387 for (unsigned int i = 0; i < comm_size; i++) {
388 (*sendcounts)[i] = std::stoi(action[3 + i]);
389 (*recvcounts)[i] = std::stoi(action[4 + comm_size + i]);
391 send_size_sum = std::accumulate(sendcounts->begin(), sendcounts->end(), 0);
392 recv_size_sum = std::accumulate(recvcounts->begin(), recvcounts->end(), 0);
395 void WaitAction::kernel(simgrid::xbt::ReplayAction& action)
397 std::string s = boost::algorithm::join(action, " ");
398 xbt_assert(req_storage.size(), "action wait not preceded by any irecv or isend: %s", s.c_str());
399 MPI_Request request = req_storage.find(args.src, args.dst, args.tag);
400 req_storage.remove(request);
402 if (request == MPI_REQUEST_NULL) {
403 /* Assume that the trace is well formed, meaning the comm might have been caught by a MPI_test. Then just
408 int rank = request->comm() != MPI_COMM_NULL ? request->comm()->rank() : -1;
410 // Must be taken before Request::wait() since the request may be set to
411 // MPI_REQUEST_NULL by Request::wait!
412 bool is_wait_for_receive = (request->flags() & MPI_REQ_RECV);
413 // TODO: Here we take the rank while we normally take the process id (look for my_proc_id)
414 TRACE_smpi_comm_in(rank, __func__, new simgrid::instr::WaitTIData(args.src, args.dst, args.tag));
417 Request::wait(&request, &status);
419 TRACE_smpi_comm_out(rank);
420 if (is_wait_for_receive)
421 TRACE_smpi_recv(args.src, args.dst, args.tag);
424 void SendAction::kernel(simgrid::xbt::ReplayAction& action)
426 int dst_traced = MPI_COMM_WORLD->group()->actor(args.partner)->get_pid();
428 TRACE_smpi_comm_in(my_proc_id, __func__, new simgrid::instr::Pt2PtTIData(name, args.partner, args.size,
429 args.tag, Datatype::encode(args.datatype1)));
430 if (not TRACE_smpi_view_internals())
431 TRACE_smpi_send(my_proc_id, my_proc_id, dst_traced, args.tag, args.size * args.datatype1->size());
433 if (name == "send") {
434 Request::send(nullptr, args.size, args.datatype1, args.partner, args.tag, MPI_COMM_WORLD);
435 } else if (name == "isend") {
436 MPI_Request request = Request::isend(nullptr, args.size, args.datatype1, args.partner, args.tag, MPI_COMM_WORLD);
437 req_storage.add(request);
439 xbt_die("Don't know this action, %s", name.c_str());
442 TRACE_smpi_comm_out(my_proc_id);
445 void RecvAction::kernel(simgrid::xbt::ReplayAction& action)
447 int src_traced = MPI_COMM_WORLD->group()->actor(args.partner)->get_pid();
449 TRACE_smpi_comm_in(my_proc_id, __func__, new simgrid::instr::Pt2PtTIData(name, args.partner, args.size,
450 args.tag, Datatype::encode(args.datatype1)));
453 // unknown size from the receiver point of view
454 if (args.size <= 0.0) {
455 Request::probe(args.partner, args.tag, MPI_COMM_WORLD, &status);
456 args.size = status.count;
459 if (name == "recv") {
460 Request::recv(nullptr, args.size, args.datatype1, args.partner, args.tag, MPI_COMM_WORLD, &status);
461 } else if (name == "irecv") {
462 MPI_Request request = Request::irecv(nullptr, args.size, args.datatype1, args.partner, args.tag, MPI_COMM_WORLD);
463 req_storage.add(request);
466 TRACE_smpi_comm_out(my_proc_id);
467 // TODO: Check why this was only activated in the "recv" case and not in the "irecv" case
468 if (name == "recv" && not TRACE_smpi_view_internals()) {
469 TRACE_smpi_recv(src_traced, my_proc_id, args.tag);
473 void ComputeAction::kernel(simgrid::xbt::ReplayAction& action)
475 TRACE_smpi_computing_in(my_proc_id, args.flops);
476 smpi_execute_flops(args.flops);
477 TRACE_smpi_computing_out(my_proc_id);
480 void TestAction::kernel(simgrid::xbt::ReplayAction& action)
482 MPI_Request request = req_storage.find(args.src, args.dst, args.tag);
483 req_storage.remove(request);
484 // if request is null here, this may mean that a previous test has succeeded
485 // Different times in traced application and replayed version may lead to this
486 // In this case, ignore the extra calls.
487 if (request != MPI_REQUEST_NULL) {
488 TRACE_smpi_comm_in(my_proc_id, __func__, new simgrid::instr::NoOpTIData("test"));
491 int flag = Request::test(&request, &status);
493 XBT_DEBUG("MPI_Test result: %d", flag);
494 /* push back request in vector to be caught by a subsequent wait. if the test did succeed, the request is now
496 if (request == MPI_REQUEST_NULL)
497 req_storage.addNullRequest(args.src, args.dst, args.tag);
499 req_storage.add(request);
501 TRACE_smpi_comm_out(my_proc_id);
505 void InitAction::kernel(simgrid::xbt::ReplayAction& action)
507 CHECK_ACTION_PARAMS(action, 0, 1)
508 MPI_DEFAULT_TYPE = (action.size() > 2) ? MPI_DOUBLE // default MPE datatype
509 : MPI_BYTE; // default TAU datatype
511 /* start a simulated timer */
512 smpi_process()->simulated_start();
515 void CommunicatorAction::kernel(simgrid::xbt::ReplayAction& action)
520 void WaitAllAction::kernel(simgrid::xbt::ReplayAction& action)
522 const unsigned int count_requests = req_storage.size();
524 if (count_requests > 0) {
525 TRACE_smpi_comm_in(my_proc_id, __func__, new simgrid::instr::Pt2PtTIData("waitall", -1, count_requests, ""));
526 std::vector<std::pair</*sender*/int,/*recv*/int>> sender_receiver;
527 std::vector<MPI_Request> reqs;
528 req_storage.get_requests(reqs);
529 for (const auto& req : reqs) {
530 if (req && (req->flags() & MPI_REQ_RECV)) {
531 sender_receiver.push_back({req->src(), req->dst()});
534 MPI_Status status[count_requests];
535 Request::waitall(count_requests, &(reqs.data())[0], status);
536 req_storage.get_store().clear();
538 for (auto& pair : sender_receiver) {
539 TRACE_smpi_recv(pair.first, pair.second, 0);
541 TRACE_smpi_comm_out(my_proc_id);
545 void BarrierAction::kernel(simgrid::xbt::ReplayAction& action)
547 TRACE_smpi_comm_in(my_proc_id, __func__, new simgrid::instr::NoOpTIData("barrier"));
548 Colls::barrier(MPI_COMM_WORLD);
549 TRACE_smpi_comm_out(my_proc_id);
552 void BcastAction::kernel(simgrid::xbt::ReplayAction& action)
554 TRACE_smpi_comm_in(my_proc_id, "action_bcast",
555 new simgrid::instr::CollTIData("bcast", MPI_COMM_WORLD->group()->actor(args.root)->get_pid(),
556 -1.0, args.size, -1, Datatype::encode(args.datatype1), ""));
558 Colls::bcast(send_buffer(args.size * args.datatype1->size()), args.size, args.datatype1, args.root, MPI_COMM_WORLD);
560 TRACE_smpi_comm_out(my_proc_id);
563 void ReduceAction::kernel(simgrid::xbt::ReplayAction& action)
565 TRACE_smpi_comm_in(my_proc_id, "action_reduce",
566 new simgrid::instr::CollTIData("reduce", MPI_COMM_WORLD->group()->actor(args.root)->get_pid(),
567 args.comp_size, args.comm_size, -1,
568 Datatype::encode(args.datatype1), ""));
570 Colls::reduce(send_buffer(args.comm_size * args.datatype1->size()),
571 recv_buffer(args.comm_size * args.datatype1->size()), args.comm_size, args.datatype1, MPI_OP_NULL, args.root, MPI_COMM_WORLD);
572 smpi_execute_flops(args.comp_size);
574 TRACE_smpi_comm_out(my_proc_id);
577 void AllReduceAction::kernel(simgrid::xbt::ReplayAction& action)
579 TRACE_smpi_comm_in(my_proc_id, "action_allreduce", new simgrid::instr::CollTIData("allreduce", -1, args.comp_size, args.comm_size, -1,
580 Datatype::encode(args.datatype1), ""));
582 Colls::allreduce(send_buffer(args.comm_size * args.datatype1->size()),
583 recv_buffer(args.comm_size * args.datatype1->size()), args.comm_size, args.datatype1, MPI_OP_NULL, MPI_COMM_WORLD);
584 smpi_execute_flops(args.comp_size);
586 TRACE_smpi_comm_out(my_proc_id);
589 void AllToAllAction::kernel(simgrid::xbt::ReplayAction& action)
591 TRACE_smpi_comm_in(my_proc_id, "action_alltoall",
592 new simgrid::instr::CollTIData("alltoall", -1, -1.0, args.send_size, args.recv_size,
593 Datatype::encode(args.datatype1),
594 Datatype::encode(args.datatype2)));
596 Colls::alltoall(send_buffer(args.send_size * args.comm_size * args.datatype1->size()), args.send_size,
597 args.datatype1, recv_buffer(args.recv_size * args.comm_size * args.datatype2->size()),
598 args.recv_size, args.datatype2, MPI_COMM_WORLD);
600 TRACE_smpi_comm_out(my_proc_id);
603 void GatherAction::kernel(simgrid::xbt::ReplayAction& action)
605 TRACE_smpi_comm_in(my_proc_id, name.c_str(), new simgrid::instr::CollTIData(name, (name == "gather") ? args.root : -1, -1.0, args.send_size, args.recv_size,
606 Datatype::encode(args.datatype1), Datatype::encode(args.datatype2)));
608 if (name == "gather") {
609 int rank = MPI_COMM_WORLD->rank();
610 Colls::gather(send_buffer(args.send_size * args.datatype1->size()), args.send_size, args.datatype1,
611 (rank == args.root) ? recv_buffer(args.recv_size * args.comm_size * args.datatype2->size()) : nullptr, args.recv_size, args.datatype2, args.root, MPI_COMM_WORLD);
614 Colls::allgather(send_buffer(args.send_size * args.datatype1->size()), args.send_size, args.datatype1,
615 recv_buffer(args.recv_size * args.datatype2->size()), args.recv_size, args.datatype2, MPI_COMM_WORLD);
617 TRACE_smpi_comm_out(my_proc_id);
620 void GatherVAction::kernel(simgrid::xbt::ReplayAction& action)
622 int rank = MPI_COMM_WORLD->rank();
624 TRACE_smpi_comm_in(my_proc_id, name.c_str(), new simgrid::instr::VarCollTIData(
625 name, (name == "gatherv") ? args.root : -1, args.send_size, nullptr, -1, args.recvcounts,
626 Datatype::encode(args.datatype1), Datatype::encode(args.datatype2)));
628 if (name == "gatherv") {
629 Colls::gatherv(send_buffer(args.send_size * args.datatype1->size()), args.send_size, args.datatype1,
630 (rank == args.root) ? recv_buffer(args.recv_size_sum * args.datatype2->size()) : nullptr,
631 args.recvcounts->data(), args.disps.data(), args.datatype2, args.root, MPI_COMM_WORLD);
634 Colls::allgatherv(send_buffer(args.send_size * args.datatype1->size()), args.send_size, args.datatype1,
635 recv_buffer(args.recv_size_sum * args.datatype2->size()), args.recvcounts->data(),
636 args.disps.data(), args.datatype2, MPI_COMM_WORLD);
639 TRACE_smpi_comm_out(my_proc_id);
642 void ScatterAction::kernel(simgrid::xbt::ReplayAction& action)
644 int rank = MPI_COMM_WORLD->rank();
645 TRACE_smpi_comm_in(my_proc_id, "action_scatter", new simgrid::instr::CollTIData(name, args.root, -1.0, args.send_size, args.recv_size,
646 Datatype::encode(args.datatype1),
647 Datatype::encode(args.datatype2)));
649 Colls::scatter(send_buffer(args.send_size * args.datatype1->size()), args.send_size, args.datatype1,
650 (rank == args.root) ? recv_buffer(args.recv_size * args.datatype2->size()) : nullptr, args.recv_size, args.datatype2, args.root, MPI_COMM_WORLD);
652 TRACE_smpi_comm_out(my_proc_id);
655 void ScatterVAction::kernel(simgrid::xbt::ReplayAction& action)
657 int rank = MPI_COMM_WORLD->rank();
658 TRACE_smpi_comm_in(my_proc_id, "action_scatterv", new simgrid::instr::VarCollTIData(name, args.root, -1, args.sendcounts, args.recv_size,
659 nullptr, Datatype::encode(args.datatype1),
660 Datatype::encode(args.datatype2)));
662 Colls::scatterv((rank == args.root) ? send_buffer(args.send_size_sum * args.datatype1->size()) : nullptr,
663 args.sendcounts->data(), args.disps.data(), args.datatype1,
664 recv_buffer(args.recv_size * args.datatype2->size()), args.recv_size, args.datatype2, args.root,
667 TRACE_smpi_comm_out(my_proc_id);
670 void ReduceScatterAction::kernel(simgrid::xbt::ReplayAction& action)
672 TRACE_smpi_comm_in(my_proc_id, "action_reducescatter",
673 new simgrid::instr::VarCollTIData("reducescatter", -1, 0, nullptr, -1, args.recvcounts,
674 std::to_string(args.comp_size), /* ugly hack to print comp_size */
675 Datatype::encode(args.datatype1)));
677 Colls::reduce_scatter(send_buffer(args.recv_size_sum * args.datatype1->size()),
678 recv_buffer(args.recv_size_sum * args.datatype1->size()), args.recvcounts->data(),
679 args.datatype1, MPI_OP_NULL, MPI_COMM_WORLD);
681 smpi_execute_flops(args.comp_size);
682 TRACE_smpi_comm_out(my_proc_id);
685 void AllToAllVAction::kernel(simgrid::xbt::ReplayAction& action)
687 TRACE_smpi_comm_in(my_proc_id, __func__,
688 new simgrid::instr::VarCollTIData(
689 "alltoallv", -1, args.send_size_sum, args.sendcounts, args.recv_size_sum, args.recvcounts,
690 Datatype::encode(args.datatype1), Datatype::encode(args.datatype2)));
692 Colls::alltoallv(send_buffer(args.send_buf_size * args.datatype1->size()), args.sendcounts->data(), args.senddisps.data(), args.datatype1,
693 recv_buffer(args.recv_buf_size * args.datatype2->size()), args.recvcounts->data(), args.recvdisps.data(), args.datatype2, MPI_COMM_WORLD);
695 TRACE_smpi_comm_out(my_proc_id);
697 } // Replay Namespace
698 }} // namespace simgrid::smpi
700 static std::unordered_map<aid_t, simgrid::smpi::replay::RequestStorage> storage;
701 /** @brief Only initialize the replay, don't do it for real */
702 void smpi_replay_init(int* argc, char*** argv)
704 simgrid::smpi::ActorExt::init(argc, argv);
705 smpi_process()->mark_as_initialized();
706 smpi_process()->set_replaying(true);
708 int my_proc_id = simgrid::s4u::this_actor::get_pid();
710 TRACE_smpi_init(my_proc_id);
711 TRACE_smpi_computing_init(my_proc_id);
712 TRACE_smpi_comm_in(my_proc_id, "smpi_replay_run_init", new simgrid::instr::NoOpTIData("init"));
713 TRACE_smpi_comm_out(my_proc_id);
714 xbt_replay_action_register("init", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::InitAction().execute(action); });
715 xbt_replay_action_register("finalize", [](simgrid::xbt::ReplayAction& action) { /* nothing to do */ });
716 xbt_replay_action_register("comm_size", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::CommunicatorAction().execute(action); });
717 xbt_replay_action_register("comm_split",[](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::CommunicatorAction().execute(action); });
718 xbt_replay_action_register("comm_dup", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::CommunicatorAction().execute(action); });
719 xbt_replay_action_register("send", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::SendAction("send", storage[simgrid::s4u::this_actor::get_pid()]).execute(action); });
720 xbt_replay_action_register("isend", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::SendAction("isend", storage[simgrid::s4u::this_actor::get_pid()]).execute(action); });
721 xbt_replay_action_register("recv", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::RecvAction("recv", storage[simgrid::s4u::this_actor::get_pid()]).execute(action); });
722 xbt_replay_action_register("irecv", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::RecvAction("irecv", storage[simgrid::s4u::this_actor::get_pid()]).execute(action); });
723 xbt_replay_action_register("test", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::TestAction(storage[simgrid::s4u::this_actor::get_pid()]).execute(action); });
724 xbt_replay_action_register("wait", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::WaitAction(storage[simgrid::s4u::this_actor::get_pid()]).execute(action); });
725 xbt_replay_action_register("waitall", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::WaitAllAction(storage[simgrid::s4u::this_actor::get_pid()]).execute(action); });
726 xbt_replay_action_register("barrier", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::BarrierAction().execute(action); });
727 xbt_replay_action_register("bcast", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::BcastAction().execute(action); });
728 xbt_replay_action_register("reduce", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::ReduceAction().execute(action); });
729 xbt_replay_action_register("allreduce", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::AllReduceAction().execute(action); });
730 xbt_replay_action_register("alltoall", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::AllToAllAction().execute(action); });
731 xbt_replay_action_register("alltoallv", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::AllToAllVAction().execute(action); });
732 xbt_replay_action_register("gather", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::GatherAction("gather").execute(action); });
733 xbt_replay_action_register("scatter", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::ScatterAction().execute(action); });
734 xbt_replay_action_register("gatherv", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::GatherVAction("gatherv").execute(action); });
735 xbt_replay_action_register("scatterv", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::ScatterVAction().execute(action); });
736 xbt_replay_action_register("allgather", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::GatherAction("allgather").execute(action); });
737 xbt_replay_action_register("allgatherv", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::GatherVAction("allgatherv").execute(action); });
738 xbt_replay_action_register("reducescatter", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::ReduceScatterAction().execute(action); });
739 xbt_replay_action_register("compute", [](simgrid::xbt::ReplayAction& action) { simgrid::smpi::replay::ComputeAction().execute(action); });
741 //if we have a delayed start, sleep here.
743 double value = xbt_str_parse_double((*argv)[2], "%s is not a double");
744 XBT_VERB("Delayed start for instance - Sleeping for %f flops ",value );
745 smpi_execute_flops(value);
747 //UGLY: force a context switch to be sure that all MSG_processes begin initialization
748 XBT_DEBUG("Force context switch by smpi_execute_flops - Sleeping for 0.0 flops ");
749 smpi_execute_flops(0.0);
753 /** @brief actually run the replay after initialization */
754 void smpi_replay_main(int* argc, char*** argv)
756 static int active_processes = 0;
758 storage[simgrid::s4u::this_actor::get_pid()] = simgrid::smpi::replay::RequestStorage();
759 simgrid::xbt::replay_runner(*argc, *argv);
761 /* and now, finalize everything */
762 /* One active process will stop. Decrease the counter*/
763 unsigned int count_requests = storage[simgrid::s4u::this_actor::get_pid()].size();
764 XBT_DEBUG("There are %ud elements in reqq[*]", count_requests);
765 if (count_requests > 0) {
766 MPI_Request requests[count_requests];
767 MPI_Status status[count_requests];
770 for (auto const& pair : storage[simgrid::s4u::this_actor::get_pid()].get_store()) {
771 requests[i] = pair.second;
774 simgrid::smpi::Request::waitall(count_requests, requests, status);
778 if(active_processes==0){
779 /* Last process alive speaking: end the simulated timer */
780 XBT_INFO("Simulation time %f", smpi_process()->simulated_elapsed());
781 smpi_free_replay_tmp_buffers();
784 TRACE_smpi_comm_in(simgrid::s4u::this_actor::get_pid(), "smpi_replay_run_finalize",
785 new simgrid::instr::NoOpTIData("finalize"));
787 smpi_process()->finalize();
789 TRACE_smpi_comm_out(simgrid::s4u::this_actor::get_pid());
790 TRACE_smpi_finalize(simgrid::s4u::this_actor::get_pid());
793 /** @brief chain a replay initialization and a replay start */
794 void smpi_replay_run(int* argc, char*** argv)
796 smpi_replay_init(argc, argv);
797 smpi_replay_main(argc, argv);