1 /* Copyright (c) 2013-2023. 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. */
9 #include "colls_private.hpp"
10 #include "simgrid/s4u/Engine.hpp"
11 #include "src/smpi/include/smpi_actor.hpp"
13 //attempt to do a quick autotuning version of the collective,
14 #define AUTOMATIC_COLL_BENCH(cat, ret, args, args2) \
15 ret _XBT_CONCAT2(cat, __automatic)(COLL_UNPAREN args) \
17 double time1, time2, time_min = DBL_MAX; \
18 int min_coll = -1, global_coll = -1; \
19 double buf_in, buf_out, max_min = DBL_MAX; \
20 auto descriptions = simgrid::smpi::colls::get_smpi_coll_descriptions(_XBT_STRINGIFY(cat)); \
21 for (unsigned long i = 0; i < descriptions->size(); i++) { \
22 auto desc = &descriptions->at(i); \
23 if (desc->name == "automatic" || desc->name == "default") \
25 barrier__default(comm); \
26 if (TRACE_is_enabled()) { \
27 simgrid::instr::EventType* type = \
28 simgrid::instr::Container::get_root()->get_type()->by_name_or_create<simgrid::instr::EventType>( \
29 _XBT_STRINGIFY(cat)); \
31 std::string cont_name = "rank-" + std::to_string(simgrid::s4u::this_actor::get_pid()); \
32 type->add_entity_value(desc->name, "1.0 1.0 1.0"); \
33 new simgrid::instr::NewEvent(simgrid::s4u::Engine::get_clock(), simgrid::instr::Container::by_name(cont_name), \
34 type, type->get_entity_value(desc->name)); \
36 time1 = simgrid::s4u::Engine::get_clock(); \
38 ((int(*) args)desc->coll) args2; \
39 } catch (std::exception & ex) { \
42 time2 = simgrid::s4u::Engine::get_clock(); \
43 buf_out = time2 - time1; \
44 reduce__default((void*)&buf_out, (void*)&buf_in, 1, MPI_DOUBLE, MPI_MAX, 0, comm); \
45 if (time2 - time1 < time_min) { \
47 time_min = time2 - time1; \
49 if (comm->rank() == 0) { \
50 if (buf_in < max_min) { \
56 if (comm->rank() == 0) { \
57 XBT_WARN("For rank 0, the quickest was %s : %f , but global was %s : %f at max", \
58 descriptions->at(min_coll).name.c_str(), time_min, descriptions->at(global_coll).name.c_str(), \
61 XBT_WARN("The quickest " _XBT_STRINGIFY(cat) " was %s on rank %d and took %f", \
62 descriptions->at(min_coll).name.c_str(), comm->rank(), time_min); \
63 return (min_coll != -1) ? MPI_SUCCESS : MPI_ERR_INTERN; \
66 namespace simgrid::smpi {
68 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_ALLGATHERV_SIG, (send_buff, send_count, send_type, recv_buff, recv_count, recv_disps, recv_type, comm))
69 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_ALLREDUCE_SIG, (sbuf, rbuf, rcount, dtype, op, comm))
70 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_GATHER_SIG, (send_buff, send_count, send_type, recv_buff, recv_count, recv_type, root, comm))
71 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_ALLGATHER_SIG, (send_buff,send_count,send_type,recv_buff,recv_count,recv_type,comm))
72 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_ALLTOALL_SIG,(send_buff, send_count, send_type, recv_buff, recv_count, recv_type,comm))
73 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_ALLTOALLV_SIG, (send_buff, send_counts, send_disps, send_type, recv_buff, recv_counts, recv_disps, recv_type, comm))
74 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_BCAST_SIG , (buf, count, datatype, root, comm))
75 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_REDUCE_SIG,(buf,rbuf, count, datatype, op, root, comm))
76 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_REDUCE_SCATTER_SIG ,(sbuf,rbuf, rcounts,dtype,op,comm))
77 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_SCATTER_SIG ,(sendbuf, sendcount, sendtype,recvbuf, recvcount, recvtype,root, comm))
78 COLL_APPLY(AUTOMATIC_COLL_BENCH, COLL_BARRIER_SIG,(comm))
80 } // namespace simgrid::smpi