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