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