src/smpi/internals/smpi_actor.cpp

   1 /* Copyright (c) 2009-2019. The SimGrid Team. All rights reserved.          */
   2
   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. */
   5
   6 #include "src/smpi/include/smpi_actor.hpp"
   7 #include "mc/mc.h"
   8 #include "smpi_comm.hpp"
   9 #include "src/mc/mc_replay.hpp"
  10 #include "src/simix/smx_private.hpp"
  11
  12 #if HAVE_PAPI
  13 #include "papi.h"
  14 extern std::string papi_default_config_name;
  15 #endif
  16
  17 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_process, smpi, "Logging specific to SMPI (kernel)");
  18
  19 namespace simgrid {
  20 namespace smpi {
  21
  22 ActorExt::ActorExt(s4u::ActorPtr actor, s4u::Barrier* finalization_barrier)
  23     : finalization_barrier_(finalization_barrier), actor_(actor)
  24 {
  25   mailbox_         = s4u::Mailbox::by_name("SMPI-" + std::to_string(actor_->get_pid()));
  26   mailbox_small_   = s4u::Mailbox::by_name("small-" + std::to_string(actor_->get_pid()));
  27   mailboxes_mutex_ = s4u::Mutex::create();
  28   timer_           = xbt_os_timer_new();
  29   state_           = SmpiProcessState::UNINITIALIZED;
  30   info_env_        = MPI_INFO_NULL;
  31   if (MC_is_active())
  32     MC_ignore_heap(timer_, xbt_os_timer_size());
  33
  34 #if HAVE_PAPI
  35   if (not simgrid::config::get_value<std::string>("smpi/papi-events").empty()) {
  36     // TODO: Implement host/process/thread based counters. This implementation
  37     // just always takes the values passed via "default", like this:
  38     // "default:COUNTER1:COUNTER2:COUNTER3;".
  39     auto it = units2papi_setup.find(papi_default_config_name);
  40     if (it != units2papi_setup.end()) {
  41       papi_event_set_    = it->second.event_set;
  42       papi_counter_data_ = it->second.counter_data;
  43       XBT_DEBUG("Setting PAPI set for process %li", actor->get_pid());
  44     } else {
  45       papi_event_set_ = PAPI_NULL;
  46       XBT_DEBUG("No PAPI set for process %li", actor->get_pid());
  47     }
  48   }
  49 #endif
  50 }
  51
  52 ActorExt::~ActorExt()
  53 {
  54   if (comm_self_ != MPI_COMM_NULL)
  55     simgrid::smpi::Comm::destroy(comm_self_);
  56   if (comm_intra_ != MPI_COMM_NULL)
  57     simgrid::smpi::Comm::destroy(comm_intra_);
  58   xbt_os_timer_free(timer_);
  59 }
  60
  61 void ActorExt::set_data(const std::string& instance_id)
  62 {
  63   instance_id_                   = instance_id;
  64   comm_world_                    = smpi_deployment_comm_world(instance_id_);
  65   simgrid::s4u::Barrier* barrier = smpi_deployment_finalization_barrier(instance_id_);
  66   if (barrier != nullptr) // don't overwrite the current one if the instance has none
  67     finalization_barrier_ = barrier;
  68
  69   // set the process attached to the mailbox
  70   mailbox_small_->set_receiver(actor_);
  71   XBT_DEBUG("<%ld> SMPI process has been initialized: %p", actor_->get_pid(), actor_.get());
  72 }
  73
  74 /** @brief Prepares the current process for termination. */
  75 void ActorExt::finalize()
  76 {
  77   state_ = SmpiProcessState::FINALIZED;
  78   XBT_DEBUG("<%ld> Process left the game", actor_->get_pid());
  79
  80   // This leads to an explosion of the search graph which cannot be reduced:
  81   if (MC_is_active() || MC_record_replay_is_active())
  82     return;
  83   // wait for all pending asynchronous comms to finish
  84   finalization_barrier_->wait();
  85 }
  86
  87 /** @brief Check if a process is finalized */
  88 int ActorExt::finalized()
  89 {
  90   return (state_ == SmpiProcessState::FINALIZED);
  91 }
  92
  93 /** @brief Check if a process is partially initialized already */
  94 int ActorExt::initializing()
  95 {
  96   return (state_ == SmpiProcessState::INITIALIZING);
  97 }
  98
  99 /** @brief Check if a process is initialized */
 100 int ActorExt::initialized()
 101 {
 102   // TODO cheinrich: Check if we still need this. This should be a global condition, not for a
 103   // single process ... ?
 104   return (state_ == SmpiProcessState::INITIALIZED);
 105 }
 106
 107 /** @brief Mark a process as initialized (=MPI_Init called) */
 108 void ActorExt::mark_as_initialized()
 109 {
 110   if (state_ != SmpiProcessState::FINALIZED)
 111     state_ = SmpiProcessState::INITIALIZED;
 112 }
 113
 114 void ActorExt::set_replaying(bool value)
 115 {
 116   if (state_ != SmpiProcessState::FINALIZED)
 117     replaying_ = value;
 118 }
 119
 120 bool ActorExt::replaying()
 121 {
 122   return replaying_;
 123 }
 124
 125 s4u::ActorPtr ActorExt::get_actor()
 126 {
 127   return actor_;
 128 }
 129
 130 /**
 131  * @brief Returns a structure that stores the location (filename + linenumber) of the last calls to MPI_* functions.
 132  *
 133  * @see smpi_trace_set_call_location
 134  */
 135 smpi_trace_call_location_t* ActorExt::call_location()
 136 {
 137   return &trace_call_loc_;
 138 }
 139
 140 void ActorExt::set_privatized_region(smpi_privatization_region_t region)
 141 {
 142   privatized_region_ = region;
 143 }
 144
 145 smpi_privatization_region_t ActorExt::privatized_region()
 146 {
 147   return privatized_region_;
 148 }
 149
 150 MPI_Comm ActorExt::comm_world()
 151 {
 152   return comm_world_ == nullptr ? MPI_COMM_NULL : *comm_world_;
 153 }
 154
 155 s4u::MutexPtr ActorExt::mailboxes_mutex()
 156 {
 157   return mailboxes_mutex_;
 158 }
 159
 160 #if HAVE_PAPI
 161 int ActorExt::papi_event_set()
 162 {
 163   return papi_event_set_;
 164 }
 165
 166 papi_counter_t& ActorExt::papi_counters()
 167 {
 168   return papi_counter_data_;
 169 }
 170 #endif
 171
 172 xbt_os_timer_t ActorExt::timer()
 173 {
 174   return timer_;
 175 }
 176
 177 void ActorExt::simulated_start()
 178 {
 179   simulated_ = SIMIX_get_clock();
 180 }
 181
 182 double ActorExt::simulated_elapsed()
 183 {
 184   return SIMIX_get_clock() - simulated_;
 185 }
 186
 187 MPI_Comm ActorExt::comm_self()
 188 {
 189   if (comm_self_ == MPI_COMM_NULL) {
 190     MPI_Group group = new Group(1);
 191     comm_self_      = new Comm(group, nullptr);
 192     group->set_mapping(actor_, 0);
 193   }
 194   return comm_self_;
 195 }
 196
 197 MPI_Info ActorExt::info_env()
 198 {
 199   return info_env_;
 200 }
 201
 202 MPI_Comm ActorExt::comm_intra()
 203 {
 204   return comm_intra_;
 205 }
 206
 207 void ActorExt::set_comm_intra(MPI_Comm comm)
 208 {
 209   comm_intra_ = comm;
 210 }
 211
 212 void ActorExt::set_sampling(int s)
 213 {
 214   sampling_ = s;
 215 }
 216
 217 int ActorExt::sampling()
 218 {
 219   return sampling_;
 220 }
 221
 222 void ActorExt::init()
 223 {
 224   xbt_assert(smpi_get_universe_size() != 0, "SimGrid was not initialized properly before entering MPI_Init. "
 225                                             "Aborting, please check compilation process and use smpirun.");
 226
 227   simgrid::s4u::ActorPtr self = simgrid::s4u::Actor::self();
 228   // cheinrich: I'm not sure what the impact of the SMPI_switch_data_segment on this call is. I moved
 229   // this up here so that I can set the privatized region before the switch.
 230   ActorExt* ext = smpi_process_remote(self);
 231   // if we are in MPI_Init and argc handling has already been done.
 232   if (ext->initialized())
 233     return;
 234
 235   if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP) {
 236     /* Now using the segment index of this process  */
 237     ext->set_privatized_region(smpi_init_global_memory_segment_process());
 238     /* Done at the process's creation */
 239     SMPI_switch_data_segment(self);
 240   }
 241
 242   std::string instance_id = self->get_property("instance_id");
 243   const int rank          = xbt_str_parse_int(self->get_property("rank"), "Cannot parse rank");
 244
 245   ext->state_ = SmpiProcessState::INITIALIZING;
 246   smpi_deployment_register_process(instance_id, rank, self);
 247
 248   ext->set_data(instance_id);
 249 }
 250
 251 int ActorExt::get_optind()
 252 {
 253   return optind_;
 254 }
 255
 256 void ActorExt::set_optind(int new_optind)
 257 {
 258   optind_ = new_optind;
 259 }
 260
 261 } // namespace smpi
 262 } // namespace simgrid