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 /** @brief Prepares the current process for termination. */
  62 void ActorExt::finalize()
  63 {
  64   state_ = SmpiProcessState::FINALIZED;
  65   XBT_DEBUG("<%ld> Process left the game", actor_->get_pid());
  66
  67   // This leads to an explosion of the search graph which cannot be reduced:
  68   if (MC_is_active() || MC_record_replay_is_active())
  69     return;
  70   // wait for all pending asynchronous comms to finish
  71   finalization_barrier_->wait();
  72 }
  73
  74 /** @brief Check if a process is finalized */
  75 int ActorExt::finalized()
  76 {
  77   return (state_ == SmpiProcessState::FINALIZED);
  78 }
  79
  80 /** @brief Check if a process is partially initialized already */
  81 int ActorExt::initializing()
  82 {
  83   return (state_ == SmpiProcessState::INITIALIZING);
  84 }
  85
  86 /** @brief Check if a process is initialized */
  87 int ActorExt::initialized()
  88 {
  89   // TODO cheinrich: Check if we still need this. This should be a global condition, not for a
  90   // single process ... ?
  91   return (state_ == SmpiProcessState::INITIALIZED);
  92 }
  93
  94 /** @brief Mark a process as initialized (=MPI_Init called) */
  95 void ActorExt::mark_as_initialized()
  96 {
  97   if (state_ != SmpiProcessState::FINALIZED)
  98     state_ = SmpiProcessState::INITIALIZED;
  99 }
 100
 101 void ActorExt::set_replaying(bool value)
 102 {
 103   if (state_ != SmpiProcessState::FINALIZED)
 104     replaying_ = value;
 105 }
 106
 107 bool ActorExt::replaying()
 108 {
 109   return replaying_;
 110 }
 111
 112 s4u::ActorPtr ActorExt::get_actor()
 113 {
 114   return actor_;
 115 }
 116
 117 /**
 118  * @brief Returns a structure that stores the location (filename + linenumber) of the last calls to MPI_* functions.
 119  *
 120  * @see smpi_trace_set_call_location
 121  */
 122 smpi_trace_call_location_t* ActorExt::call_location()
 123 {
 124   return &trace_call_loc_;
 125 }
 126
 127 void ActorExt::set_privatized_region(smpi_privatization_region_t region)
 128 {
 129   privatized_region_ = region;
 130 }
 131
 132 smpi_privatization_region_t ActorExt::privatized_region()
 133 {
 134   return privatized_region_;
 135 }
 136
 137 MPI_Comm ActorExt::comm_world()
 138 {
 139   return comm_world_ == nullptr ? MPI_COMM_NULL : *comm_world_;
 140 }
 141
 142 s4u::MutexPtr ActorExt::mailboxes_mutex()
 143 {
 144   return mailboxes_mutex_;
 145 }
 146
 147 #if HAVE_PAPI
 148 int ActorExt::papi_event_set()
 149 {
 150   return papi_event_set_;
 151 }
 152
 153 papi_counter_t& ActorExt::papi_counters()
 154 {
 155   return papi_counter_data_;
 156 }
 157 #endif
 158
 159 xbt_os_timer_t ActorExt::timer()
 160 {
 161   return timer_;
 162 }
 163
 164 void ActorExt::simulated_start()
 165 {
 166   simulated_ = SIMIX_get_clock();
 167 }
 168
 169 double ActorExt::simulated_elapsed()
 170 {
 171   return SIMIX_get_clock() - simulated_;
 172 }
 173
 174 MPI_Comm ActorExt::comm_self()
 175 {
 176   if (comm_self_ == MPI_COMM_NULL) {
 177     MPI_Group group = new Group(1);
 178     comm_self_      = new Comm(group, nullptr);
 179     group->set_mapping(actor_, 0);
 180   }
 181   return comm_self_;
 182 }
 183
 184 MPI_Info ActorExt::info_env()
 185 {
 186   return info_env_;
 187 }
 188
 189 MPI_Comm ActorExt::comm_intra()
 190 {
 191   return comm_intra_;
 192 }
 193
 194 void ActorExt::set_comm_intra(MPI_Comm comm)
 195 {
 196   comm_intra_ = comm;
 197 }
 198
 199 void ActorExt::set_sampling(int s)
 200 {
 201   sampling_ = s;
 202 }
 203
 204 int ActorExt::sampling()
 205 {
 206   return sampling_;
 207 }
 208
 209 void ActorExt::init()
 210 {
 211   xbt_assert(smpi_get_universe_size() != 0, "SimGrid was not initialized properly before entering MPI_Init. "
 212                                             "Aborting, please check compilation process and use smpirun.");
 213
 214   simgrid::s4u::ActorPtr self = simgrid::s4u::Actor::self();
 215   // cheinrich: I'm not sure what the impact of the SMPI_switch_data_segment on this call is. I moved
 216   // this up here so that I can set the privatized region before the switch.
 217   ActorExt* ext = smpi_process_remote(self);
 218   // if we are in MPI_Init and argc handling has already been done.
 219   if (ext->initialized())
 220     return;
 221
 222   if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP) {
 223     /* Now using the segment index of this process  */
 224     ext->set_privatized_region(smpi_init_global_memory_segment_process());
 225     /* Done at the process's creation */
 226     SMPI_switch_data_segment(self);
 227   }
 228
 229   std::string instance_id = self->get_property("instance_id");
 230   const int rank          = xbt_str_parse_int(self->get_property("rank"), "Cannot parse rank");
 231
 232   ext->state_ = SmpiProcessState::INITIALIZING;
 233   smpi_deployment_register_process(instance_id, rank, self);
 234
 235   ext->instance_id_              = instance_id;
 236   ext->comm_world_               = smpi_deployment_comm_world(instance_id);
 237   simgrid::s4u::Barrier* barrier = smpi_deployment_finalization_barrier(instance_id);
 238   if (barrier != nullptr) // don't overwrite the current one if the instance has none
 239     ext->finalization_barrier_ = barrier;
 240
 241   // set the process attached to the mailbox
 242   ext->mailbox_small_->set_receiver(ext->actor_);
 243   XBT_DEBUG("<%ld> SMPI process has been initialized: %p", ext->actor_->get_pid(), ext->actor_.get());
 244 }
 245
 246 int ActorExt::get_optind()
 247 {
 248   return optind_;
 249 }
 250
 251 void ActorExt::set_optind(int new_optind)
 252 {
 253   optind_ = new_optind;
 254 }
 255
 256 } // namespace smpi
 257 } // namespace simgrid