src/smpi/internals/smpi_process.cpp

   1 /* Copyright (c) 2009-2017. 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 "private.hpp"
   9 #include "simgrid/s4u/forward.hpp"
  10 #include "smpi_comm.hpp"
  11 #include "smpi_group.hpp"
  12 #include "src/mc/mc_replay.hpp"
  13 #include "src/msg/msg_private.hpp"
  14 #include "src/simix/smx_private.hpp"
  15 #include <sstream>
  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 Process::Process(ActorPtr actor, msg_bar_t finalization_barrier)
  26     : finalization_barrier_(finalization_barrier), process_(actor)
  27 {
  28   std::stringstream mailboxname;
  29   std::stringstream mailboxname_small;
  30
  31   mailboxname           << std::string("SMPI-")  << process_->getPid();
  32   mailboxname_small     << std::string("small-") << process_->getPid();
  33   mailbox_              = simgrid::s4u::Mailbox::byName(mailboxname.str());
  34   mailbox_small_        = simgrid::s4u::Mailbox::byName(mailboxname_small.str());
  35   mailboxes_mutex_      = xbt_mutex_init();
  36   timer_                = xbt_os_timer_new();
  37   state_                = SMPI_UNINITIALIZED;
  38   if (MC_is_active())
  39     MC_ignore_heap(timer_, xbt_os_timer_size());
  40
  41 #if HAVE_PAPI
  42   if (xbt_cfg_get_string("smpi/papi-events")[0] != '\0') {
  43     // TODO: Implement host/process/thread based counters. This implementation
  44     // just always takes the values passed via "default", like this:
  45     // "default:COUNTER1:COUNTER2:COUNTER3;".
  46     auto it = units2papi_setup.find(papi_default_config_name);
  47     if (it != units2papi_setup.end()) {
  48       papi_event_set_    = it->second.event_set;
  49       papi_counter_data_ = it->second.counter_data;
  50       XBT_DEBUG("Setting PAPI set for process %i", i);
  51     } else {
  52       papi_event_set_ = PAPI_NULL;
  53       XBT_DEBUG("No PAPI set for process %i", i);
  54     }
  55   }
  56 #endif
  57 }
  58
  59 void Process::set_data(int* argc, char*** argv)
  60 {
  61   instance_id_      = std::string((*argv)[1]);
  62   comm_world_       = smpi_deployment_comm_world(instance_id_.c_str());
  63   msg_bar_t barrier = smpi_deployment_finalization_barrier(instance_id_.c_str());
  64   if (barrier != nullptr) // don't overwrite the current one if the instance has none
  65     finalization_barrier_ = barrier;
  66
  67   process_                                                                  = simgrid::s4u::Actor::self();
  68   static_cast<simgrid::msg::ActorExt*>(process_->getImpl()->userdata)->data = this;
  69
  70   if (*argc > 3) {
  71     memmove(&(*argv)[0], &(*argv)[2], sizeof(char*) * (*argc - 2));
  72     (*argv)[(*argc) - 1] = nullptr;
  73     (*argv)[(*argc) - 2] = nullptr;
  74   }
  75   (*argc) -= 2;
  76   argc_ = argc;
  77   argv_ = argv;
  78   // set the process attached to the mailbox
  79   mailbox_small_->setReceiver(process_);
  80   XBT_DEBUG("<%lu> New process in the game: %p", process_->getPid(), process_.get());
  81 }
  82
  83 /** @brief Prepares the current process for termination. */
  84 void Process::finalize()
  85 {
  86   state_ = SMPI_FINALIZED;
  87   XBT_DEBUG("<%lu> Process left the game", process_->getPid());
  88
  89   // This leads to an explosion of the search graph which cannot be reduced:
  90   if(MC_is_active() || MC_record_replay_is_active())
  91     return;
  92   // wait for all pending asynchronous comms to finish
  93   MSG_barrier_wait(finalization_barrier_);
  94 }
  95
  96 /** @brief Check if a process is finalized */
  97 int Process::finalized()
  98 {
  99   return (state_ == SMPI_FINALIZED);
 100 }
 101
 102 /** @brief Check if a process is initialized */
 103 int Process::initialized()
 104 {
 105   // TODO cheinrich: Check if we still need this. This should be a global condition, not for a
 106   // single process ... ?
 107   return (state_ == SMPI_INITIALIZED);
 108 }
 109
 110 /** @brief Mark a process as initialized (=MPI_Init called) */
 111 void Process::mark_as_initialized()
 112 {
 113   if (state_ != SMPI_FINALIZED)
 114     state_ = SMPI_INITIALIZED;
 115 }
 116
 117 void Process::set_replaying(bool value){
 118   if (state_ != SMPI_FINALIZED)
 119     replaying_ = value;
 120 }
 121
 122 bool Process::replaying(){
 123   return replaying_;
 124 }
 125
 126 void Process::set_user_data(void *data)
 127 {
 128   data_ = data;
 129 }
 130
 131 void *Process::get_user_data()
 132 {
 133   return data_;
 134 }
 135
 136 ActorPtr Process::process(){
 137   return process_;
 138 }
 139
 140 /**
 141  * \brief Returns a structure that stores the location (filename + linenumber) of the last calls to MPI_* functions.
 142  *
 143  * \see smpi_trace_set_call_location
 144  */
 145 smpi_trace_call_location_t* Process::call_location()
 146 {
 147   return &trace_call_loc_;
 148 }
 149
 150 void Process::set_privatized_region(smpi_privatization_region_t region)
 151 {
 152   privatized_region_ = region;
 153 }
 154
 155 smpi_privatization_region_t Process::privatized_region()
 156 {
 157   return privatized_region_;
 158 }
 159
 160 MPI_Comm Process::comm_world()
 161 {
 162   return comm_world_==nullptr ? MPI_COMM_NULL : *comm_world_;
 163 }
 164
 165 smx_mailbox_t Process::mailbox()
 166 {
 167   return mailbox_->getImpl();
 168 }
 169
 170 smx_mailbox_t Process::mailbox_small()
 171 {
 172   return mailbox_small_->getImpl();
 173 }
 174
 175 xbt_mutex_t Process::mailboxes_mutex()
 176 {
 177   return mailboxes_mutex_;
 178 }
 179
 180 #if HAVE_PAPI
 181 int Process::papi_event_set()
 182 {
 183   return papi_event_set_;
 184 }
 185
 186 papi_counter_t& smpi_process_papi_counters()
 187 {
 188   return papi_counter_data_;
 189 }
 190 #endif
 191
 192 xbt_os_timer_t Process::timer()
 193 {
 194   return timer_;
 195 }
 196
 197 void Process::simulated_start()
 198 {
 199   simulated_ = SIMIX_get_clock();
 200 }
 201
 202 double Process::simulated_elapsed()
 203 {
 204   return SIMIX_get_clock() - simulated_;
 205 }
 206
 207 MPI_Comm Process::comm_self()
 208 {
 209   if(comm_self_==MPI_COMM_NULL){
 210     MPI_Group group = new  Group(1);
 211     comm_self_ = new  Comm(group, nullptr);
 212     group->set_mapping(process_, 0);
 213   }
 214   return comm_self_;
 215 }
 216
 217 MPI_Comm Process::comm_intra()
 218 {
 219   return comm_intra_;
 220 }
 221
 222 void Process::set_comm_intra(MPI_Comm comm)
 223 {
 224   comm_intra_ = comm;
 225 }
 226
 227 void Process::set_sampling(int s)
 228 {
 229   sampling_ = s;
 230 }
 231
 232 int Process::sampling()
 233 {
 234   return sampling_;
 235 }
 236
 237 msg_bar_t Process::finalization_barrier(){
 238   return finalization_barrier_;
 239 }
 240
 241 int Process::return_value(){
 242   return return_value_;
 243 }
 244
 245 void Process::set_return_value(int val){
 246   return_value_=val;
 247 }
 248
 249 void Process::init(int *argc, char ***argv){
 250
 251   if (smpi_process_count() == 0) {
 252     xbt_die("SimGrid was not initialized properly before entering MPI_Init. Aborting, please check compilation process and use smpirun\n");
 253   }
 254   if (argc != nullptr && argv != nullptr) {
 255     simgrid::s4u::ActorPtr proc = simgrid::s4u::Actor::self();
 256     proc->getImpl()->context->set_cleanup(&MSG_process_cleanup_from_SIMIX);
 257
 258     char* instance_id = (*argv)[1];
 259     try {
 260       int rank = std::stoi(std::string((*argv)[2]));
 261       smpi_deployment_register_process(instance_id, rank, proc);
 262     } catch (std::invalid_argument& ia) {
 263       throw std::invalid_argument(std::string("Invalid rank: ") + (*argv)[2]);
 264     }
 265
 266     // cheinrich: I'm not sure what the impact of the SMPI_switch_data_segment on this call is. I moved
 267     // this up here so that I can set the privatized region before the switch.
 268     Process* process = smpi_process_remote(proc);
 269     int my_proc_id   = proc->getPid();
 270     if(smpi_privatize_global_variables == SMPI_PRIVATIZE_MMAP){
 271       /* Now using the segment index of this process  */
 272       process->set_privatized_region(smpi_init_global_memory_segment_process());
 273       /* Done at the process's creation */
 274       SMPI_switch_data_segment(my_proc_id);
 275     }
 276
 277     process->set_data(argc, argv);
 278   }
 279   xbt_assert(smpi_process(),
 280       "smpi_process() returned nullptr. You probably gave a nullptr parameter to MPI_Init. "
 281       "Although it's required by MPI-2, this is currently not supported by SMPI.");
 282 }
 283
 284 }
 285 }