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) : actor_(actor)
  23 {
  24   mailbox_         = s4u::Mailbox::by_name("SMPI-" + std::to_string(actor_->get_pid()));
  25   mailbox_small_   = s4u::Mailbox::by_name("small-" + std::to_string(actor_->get_pid()));
  26   mailboxes_mutex_ = s4u::Mutex::create();
  27   timer_           = xbt_os_timer_new();
  28   state_           = SmpiProcessState::UNINITIALIZED;
  29   info_env_        = MPI_INFO_NULL;
  30   if (MC_is_active())
  31     MC_ignore_heap(timer_, xbt_os_timer_size());
  32
  33 #if HAVE_PAPI
  34   if (not simgrid::config::get_value<std::string>("smpi/papi-events").empty()) {
  35     // TODO: Implement host/process/thread based counters. This implementation
  36     // just always takes the values passed via "default", like this:
  37     // "default:COUNTER1:COUNTER2:COUNTER3;".
  38     auto it = units2papi_setup.find(papi_default_config_name);
  39     if (it != units2papi_setup.end()) {
  40       papi_event_set_    = it->second.event_set;
  41       papi_counter_data_ = it->second.counter_data;
  42       XBT_DEBUG("Setting PAPI set for process %li", actor->get_pid());
  43     } else {
  44       papi_event_set_ = PAPI_NULL;
  45       XBT_DEBUG("No PAPI set for process %li", actor->get_pid());
  46     }
  47   }
  48 #endif
  49 }
  50
  51 ActorExt::~ActorExt()
  52 {
  53   TRACE_smpi_finalize(actor_->get_pid());
  54
  55   if (comm_self_ != MPI_COMM_NULL)
  56     simgrid::smpi::Comm::destroy(comm_self_);
  57   if (comm_intra_ != MPI_COMM_NULL)
  58     simgrid::smpi::Comm::destroy(comm_intra_);
  59   xbt_os_timer_free(timer_);
  60 }
  61
  62 /** @brief Prepares the current process for termination. */
  63 void ActorExt::finalize()
  64 {
  65   state_ = SmpiProcessState::FINALIZED;
  66   XBT_DEBUG("<%ld> Process left the game", actor_->get_pid());
  67
  68   smpi_deployment_unregister_process(instance_id_);
  69 }
  70
  71 /** @brief Check if a process is finalized */
  72 int ActorExt::finalized()
  73 {
  74   return (state_ == SmpiProcessState::FINALIZED);
  75 }
  76
  77 /** @brief Check if a process is partially initialized already */
  78 int ActorExt::initializing()
  79 {
  80   return (state_ == SmpiProcessState::INITIALIZING);
  81 }
  82
  83 /** @brief Check if a process is initialized */
  84 int ActorExt::initialized()
  85 {
  86   // TODO cheinrich: Check if we still need this. This should be a global condition, not for a
  87   // single process ... ?
  88   return (state_ == SmpiProcessState::INITIALIZED);
  89 }
  90
  91 /** @brief Mark a process as initialized (=MPI_Init called) */
  92 void ActorExt::mark_as_initialized()
  93 {
  94   if (state_ != SmpiProcessState::FINALIZED)
  95     state_ = SmpiProcessState::INITIALIZED;
  96 }
  97
  98 void ActorExt::set_replaying(bool value)
  99 {
 100   if (state_ != SmpiProcessState::FINALIZED)
 101     replaying_ = value;
 102 }
 103
 104 bool ActorExt::replaying()
 105 {
 106   return replaying_;
 107 }
 108
 109 s4u::ActorPtr ActorExt::get_actor()
 110 {
 111   return actor_;
 112 }
 113
 114 /**
 115  * @brief Returns a structure that stores the location (filename + linenumber) of the last calls to MPI_* functions.
 116  *
 117  * @see smpi_trace_set_call_location
 118  */
 119 smpi_trace_call_location_t* ActorExt::call_location()
 120 {
 121   return &trace_call_loc_;
 122 }
 123
 124 void ActorExt::set_privatized_region(smpi_privatization_region_t region)
 125 {
 126   privatized_region_ = region;
 127 }
 128
 129 smpi_privatization_region_t ActorExt::privatized_region()
 130 {
 131   return privatized_region_;
 132 }
 133
 134 MPI_Comm ActorExt::comm_world()
 135 {
 136   return comm_world_ == nullptr ? MPI_COMM_NULL : *comm_world_;
 137 }
 138
 139 s4u::MutexPtr ActorExt::mailboxes_mutex()
 140 {
 141   return mailboxes_mutex_;
 142 }
 143
 144 #if HAVE_PAPI
 145 int ActorExt::papi_event_set()
 146 {
 147   return papi_event_set_;
 148 }
 149
 150 papi_counter_t& ActorExt::papi_counters()
 151 {
 152   return papi_counter_data_;
 153 }
 154 #endif
 155
 156 xbt_os_timer_t ActorExt::timer()
 157 {
 158   return timer_;
 159 }
 160
 161 void ActorExt::simulated_start()
 162 {
 163   simulated_ = SIMIX_get_clock();
 164 }
 165
 166 double ActorExt::simulated_elapsed()
 167 {
 168   return SIMIX_get_clock() - simulated_;
 169 }
 170
 171 MPI_Comm ActorExt::comm_self()
 172 {
 173   if (comm_self_ == MPI_COMM_NULL) {
 174     MPI_Group group = new Group(1);
 175     comm_self_      = new Comm(group, nullptr);
 176     group->set_mapping(actor_, 0);
 177   }
 178   return comm_self_;
 179 }
 180
 181 MPI_Info ActorExt::info_env()
 182 {
 183   return info_env_;
 184 }
 185
 186 MPI_Comm ActorExt::comm_intra()
 187 {
 188   return comm_intra_;
 189 }
 190
 191 void ActorExt::set_comm_intra(MPI_Comm comm)
 192 {
 193   comm_intra_ = comm;
 194 }
 195
 196 void ActorExt::set_sampling(int s)
 197 {
 198   sampling_ = s;
 199 }
 200
 201 int ActorExt::sampling()
 202 {
 203   return sampling_;
 204 }
 205
 206 void ActorExt::init()
 207 {
 208   xbt_assert(smpi_get_universe_size() != 0, "SimGrid was not initialized properly before entering MPI_Init. "
 209                                             "Aborting, please check compilation process and use smpirun.");
 210
 211   simgrid::s4u::ActorPtr self = simgrid::s4u::Actor::self();
 212   // cheinrich: I'm not sure what the impact of the SMPI_switch_data_segment on this call is. I moved
 213   // this up here so that I can set the privatized region before the switch.
 214   ActorExt* ext = smpi_process();
 215   // if we are in MPI_Init and argc handling has already been done.
 216   if (ext->initialized())
 217     return;
 218
 219   if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP) {
 220     /* Now using the segment index of this process  */
 221     ext->set_privatized_region(smpi_init_global_memory_segment_process());
 222     /* Done at the process's creation */
 223     SMPI_switch_data_segment(self);
 224   }
 225
 226   ext->instance_id_ = self->get_property("instance_id");
 227   const int rank    = xbt_str_parse_int(self->get_property("rank"), "Cannot parse rank");
 228
 229   ext->state_ = SmpiProcessState::INITIALIZING;
 230   smpi_deployment_register_process(ext->instance_id_, rank, self);
 231
 232   ext->comm_world_ = smpi_deployment_comm_world(ext->instance_id_);
 233
 234   // set the process attached to the mailbox
 235   ext->mailbox_small_->set_receiver(ext->actor_);
 236   XBT_DEBUG("<%ld> SMPI process has been initialized: %p", ext->actor_->get_pid(), ext->actor_.get());
 237 }
 238
 239 int ActorExt::get_optind()
 240 {
 241   return optind_;
 242 }
 243
 244 void ActorExt::set_optind(int new_optind)
 245 {
 246   optind_ = new_optind;
 247 }
 248
 249 } // namespace smpi
 250 } // namespace simgrid