src/smpi/internals/smpi_process.cpp

   1 /* Copyright (c) 2009-2018. 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 "smpi_process.hpp"
   7 #include "mc/mc.h"
   8 #include "smpi_comm.hpp"
   9 #include "src/mc/mc_replay.hpp"
  10 #include "src/msg/msg_private.hpp"
  11 #include "src/simix/smx_private.hpp"
  12
  13 #if HAVE_PAPI
  14 #include "papi.h"
  15 extern std::string papi_default_config_name;
  16 #endif
  17
  18 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_process, smpi, "Logging specific to SMPI (kernel)");
  19
  20 namespace simgrid{
  21 namespace smpi{
  22
  23 using simgrid::s4u::Actor;
  24 using simgrid::s4u::ActorPtr;
  25
  26 Process::Process(ActorPtr actor, simgrid::s4u::Barrier* finalization_barrier)
  27     : finalization_barrier_(finalization_barrier), actor_(actor)
  28 {
  29   mailbox_         = simgrid::s4u::Mailbox::by_name("SMPI-" + std::to_string(actor_->get_pid()));
  30   mailbox_small_   = simgrid::s4u::Mailbox::by_name("small-" + std::to_string(actor_->get_pid()));
  31   mailboxes_mutex_ = xbt_mutex_init();
  32   timer_           = xbt_os_timer_new();
  33   state_           = SmpiProcessState::UNINITIALIZED;
  34   if (MC_is_active())
  35     MC_ignore_heap(timer_, xbt_os_timer_size());
  36
  37 #if HAVE_PAPI
  38   if (not simgrid::config::get_value<std::string>("smpi/papi-events").empty()) {
  39     // TODO: Implement host/process/thread based counters. This implementation
  40     // just always takes the values passed via "default", like this:
  41     // "default:COUNTER1:COUNTER2:COUNTER3;".
  42     auto it = units2papi_setup.find(papi_default_config_name);
  43     if (it != units2papi_setup.end()) {
  44       papi_event_set_    = it->second.event_set;
  45       papi_counter_data_ = it->second.counter_data;
  46       XBT_DEBUG("Setting PAPI set for process %li", actor->get_pid());
  47     } else {
  48       papi_event_set_ = PAPI_NULL;
  49       XBT_DEBUG("No PAPI set for process %li", actor->get_pid());
  50     }
  51   }
  52 #endif
  53 }
  54
  55 Process::~Process()
  56 {
  57   if (comm_self_ != MPI_COMM_NULL)
  58     simgrid::smpi::Comm::destroy(comm_self_);
  59   if (comm_intra_ != MPI_COMM_NULL)
  60     simgrid::smpi::Comm::destroy(comm_intra_);
  61   xbt_os_timer_free(timer_);
  62   xbt_mutex_destroy(mailboxes_mutex_);
  63 }
  64
  65 void Process::set_data(int* argc, char*** argv)
  66 {
  67   instance_id_      = std::string((*argv)[1]);
  68   comm_world_       = smpi_deployment_comm_world(instance_id_);
  69   simgrid::s4u::Barrier* barrier = smpi_deployment_finalization_barrier(instance_id_);
  70   if (barrier != nullptr) // don't overwrite the current one if the instance has none
  71     finalization_barrier_ = barrier;
  72
  73   static_cast<simgrid::msg::ActorExt*>(actor_->get_impl()->get_user_data())->data = this;
  74
  75   if (*argc > 3) {
  76     memmove(&(*argv)[0], &(*argv)[2], sizeof(char*) * (*argc - 2));
  77     (*argv)[(*argc) - 1] = nullptr;
  78     (*argv)[(*argc) - 2] = nullptr;
  79   }
  80   (*argc) -= 2;
  81   argc_ = argc;
  82   argv_ = argv;
  83   // set the process attached to the mailbox
  84   mailbox_small_->set_receiver(actor_);
  85   XBT_DEBUG("<%ld> SMPI process has been initialized: %p", actor_->get_pid(), actor_.get());
  86 }
  87
  88 /** @brief Prepares the current process for termination. */
  89 void Process::finalize()
  90 {
  91   state_ = SmpiProcessState::FINALIZED;
  92   XBT_DEBUG("<%ld> Process left the game", actor_->get_pid());
  93
  94   // This leads to an explosion of the search graph which cannot be reduced:
  95   if(MC_is_active() || MC_record_replay_is_active())
  96     return;
  97   // wait for all pending asynchronous comms to finish
  98   finalization_barrier_->wait();
  99 }
 100
 101 /** @brief Check if a process is finalized */
 102 int Process::finalized()
 103 {
 104   return (state_ == SmpiProcessState::FINALIZED);
 105 }
 106
 107 /** @brief Check if a process is initialized */
 108 int Process::initialized()
 109 {
 110   // TODO cheinrich: Check if we still need this. This should be a global condition, not for a
 111   // single process ... ?
 112   return (state_ == SmpiProcessState::INITIALIZED);
 113 }
 114
 115 /** @brief Mark a process as initialized (=MPI_Init called) */
 116 void Process::mark_as_initialized()
 117 {
 118   if (state_ != SmpiProcessState::FINALIZED)
 119     state_ = SmpiProcessState::INITIALIZED;
 120 }
 121
 122 void Process::set_replaying(bool value){
 123   if (state_ != SmpiProcessState::FINALIZED)
 124     replaying_ = value;
 125 }
 126
 127 bool Process::replaying(){
 128   return replaying_;
 129 }
 130
 131 void Process::set_user_data(void *data)
 132 {
 133   data_ = data;
 134 }
 135
 136 void *Process::get_user_data()
 137 {
 138   return data_;
 139 }
 140
 141 ActorPtr Process::get_actor()
 142 {
 143   return actor_;
 144 }
 145
 146 /**
 147  * \brief Returns a structure that stores the location (filename + linenumber) of the last calls to MPI_* functions.
 148  *
 149  * \see smpi_trace_set_call_location
 150  */
 151 smpi_trace_call_location_t* Process::call_location()
 152 {
 153   return &trace_call_loc_;
 154 }
 155
 156 void Process::set_privatized_region(smpi_privatization_region_t region)
 157 {
 158   privatized_region_ = region;
 159 }
 160
 161 smpi_privatization_region_t Process::privatized_region()
 162 {
 163   return privatized_region_;
 164 }
 165
 166 MPI_Comm Process::comm_world()
 167 {
 168   return comm_world_==nullptr ? MPI_COMM_NULL : *comm_world_;
 169 }
 170
 171 smx_mailbox_t Process::mailbox()
 172 {
 173   return mailbox_->get_impl();
 174 }
 175
 176 smx_mailbox_t Process::mailbox_small()
 177 {
 178   return mailbox_small_->get_impl();
 179 }
 180
 181 xbt_mutex_t Process::mailboxes_mutex()
 182 {
 183   return mailboxes_mutex_;
 184 }
 185
 186 #if HAVE_PAPI
 187 int Process::papi_event_set()
 188 {
 189   return papi_event_set_;
 190 }
 191
 192 papi_counter_t& Process::papi_counters()
 193 {
 194   return papi_counter_data_;
 195 }
 196 #endif
 197
 198 xbt_os_timer_t Process::timer()
 199 {
 200   return timer_;
 201 }
 202
 203 void Process::simulated_start()
 204 {
 205   simulated_ = SIMIX_get_clock();
 206 }
 207
 208 double Process::simulated_elapsed()
 209 {
 210   return SIMIX_get_clock() - simulated_;
 211 }
 212
 213 MPI_Comm Process::comm_self()
 214 {
 215   if(comm_self_==MPI_COMM_NULL){
 216     MPI_Group group = new  Group(1);
 217     comm_self_ = new  Comm(group, nullptr);
 218     group->set_mapping(actor_, 0);
 219   }
 220   return comm_self_;
 221 }
 222
 223 MPI_Comm Process::comm_intra()
 224 {
 225   return comm_intra_;
 226 }
 227
 228 void Process::set_comm_intra(MPI_Comm comm)
 229 {
 230   comm_intra_ = comm;
 231 }
 232
 233 void Process::set_sampling(int s)
 234 {
 235   sampling_ = s;
 236 }
 237
 238 int Process::sampling()
 239 {
 240   return sampling_;
 241 }
 242
 243 void Process::init(int *argc, char ***argv){
 244
 245   if (smpi_process_count() == 0) {
 246     xbt_die("SimGrid was not initialized properly before entering MPI_Init. Aborting, please check compilation process and use smpirun\n");
 247   }
 248   if (argc != nullptr && argv != nullptr) {
 249     simgrid::s4u::ActorPtr proc = simgrid::s4u::Actor::self();
 250     proc->get_impl()->context_->set_cleanup(&MSG_process_cleanup_from_SIMIX);
 251
 252     char* instance_id = (*argv)[1];
 253     try {
 254       int rank = std::stoi(std::string((*argv)[2]));
 255       smpi_deployment_register_process(instance_id, rank, proc);
 256     } catch (std::invalid_argument& ia) {
 257       throw std::invalid_argument(std::string("Invalid rank: ") + (*argv)[2]);
 258     }
 259
 260     // cheinrich: I'm not sure what the impact of the SMPI_switch_data_segment on this call is. I moved
 261     // this up here so that I can set the privatized region before the switch.
 262     Process* process = smpi_process_remote(proc);
 263     if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP) {
 264       /* Now using the segment index of this process  */
 265       process->set_privatized_region(smpi_init_global_memory_segment_process());
 266       /* Done at the process's creation */
 267       SMPI_switch_data_segment(proc);
 268     }
 269
 270     process->set_data(argc, argv);
 271   }
 272   xbt_assert(smpi_process(), "smpi_process() returned nullptr. You probably gave a nullptr parameter to MPI_Init. "
 273                              "Although it's required by MPI-2, this is currently not supported by SMPI. "
 274                              "Please use MPI_Init(&argc, &argv) as usual instead.");
 275 }
 276
 277 int Process::get_optind(){
 278   return optind;
 279 }
 280 void Process::set_optind(int new_optind){
 281   optind=new_optind;
 282 }
 283
 284 }
 285 }