src/smpi/smpi_process.cpp

   1 #include "mc/mc.h"
   2 #include "private.h"
   3 #include "simgrid/s4u/Mailbox.hpp"
   4 #include "src/kernel/activity/SynchroComm.hpp"
   5 #include "src/mc/mc_record.h"
   6 #include "src/mc/mc_replay.h"
   7 #include "src/msg/msg_private.h"
   8 #include "src/simix/smx_private.h"
   9 #include "surf/surf.h"
  10 #include "xbt/replay.hpp"
  11
  12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_process, smpi, "Logging specific to SMPI (kernel)");
  13
  14 //TODO : replace
  15 extern Process **process_data;
  16 extern int* index_to_process_data;
  17
  18 #define MAILBOX_NAME_MAXLEN (5 + sizeof(int) * 2 + 1)
  19
  20 static char *get_mailbox_name(char *str, int index)
  21 {
  22   snprintf(str, MAILBOX_NAME_MAXLEN, "SMPI-%0*x", static_cast<int> (sizeof(int) * 2), index);
  23   return str;
  24 }
  25
  26 static char *get_mailbox_name_small(char *str, int index)
  27 {
  28   snprintf(str, MAILBOX_NAME_MAXLEN, "small%0*x", static_cast<int> (sizeof(int) * 2), index);
  29   return str;
  30 }
  31
  32 namespace simgrid{
  33 namespace smpi{
  34
  35 Process::Process(int index)
  36 {
  37   char name[MAILBOX_NAME_MAXLEN];
  38   index_ = MPI_UNDEFINED;
  39   argc_                 = nullptr;
  40   argv_                 = nullptr;
  41   mailbox_              = simgrid::s4u::Mailbox::byName(get_mailbox_name(name, index));
  42   mailbox_small_        = simgrid::s4u::Mailbox::byName(get_mailbox_name_small(name, index));
  43   mailboxes_mutex_      = xbt_mutex_init();
  44   timer_                = xbt_os_timer_new();
  45   if (MC_is_active())
  46     MC_ignore_heap(timer_, xbt_os_timer_size());
  47   comm_self_            = MPI_COMM_NULL;
  48   comm_intra_           = MPI_COMM_NULL;
  49   comm_world_           = nullptr;
  50   state_                = SMPI_UNINITIALIZED;
  51   sampling_             = 0;
  52   finalization_barrier_ = nullptr;
  53   return_value_         = 0;
  54
  55 #if HAVE_PAPI
  56   if (xbt_cfg_get_string("smpi/papi-events")[0] != '\0') {
  57     // TODO: Implement host/process/thread based counters. This implementation
  58     // just always takes the values passed via "default", like this:
  59     // "default:COUNTER1:COUNTER2:COUNTER3;".
  60     auto it = units2papi_setup.find(papi_default_config_name);
  61     if (it != units2papi_setup.end()) {
  62       papi_event_set_    = it->second.event_set;
  63       papi_counter_data_ = it->second.counter_data;
  64       XBT_DEBUG("Setting PAPI set for process %i", i);
  65     } else {
  66       papi_event_set_ = PAPI_NULL;
  67       XBT_DEBUG("No PAPI set for process %i", i);
  68     }
  69   }
  70 #endif
  71 }
  72
  73 void Process::set_data(int index, int *argc, char ***argv)
  74 {
  75
  76     char* instance_id = (*argv)[1];
  77     comm_world_         = smpi_deployment_comm_world(instance_id);
  78     msg_bar_t bar = smpi_deployment_finalization_barrier(instance_id);
  79     if (bar!=nullptr) // don't overwrite the default one
  80       finalization_barrier_ = bar;
  81     index_       = index;
  82     instance_id_ = instance_id;
  83     replaying_   = false;
  84
  85     static_cast<simgrid::MsgActorExt*>(SIMIX_process_self()->data)->data = this;
  86
  87     if (*argc > 3) {
  88       memmove(&(*argv)[0], &(*argv)[2], sizeof(char *) * (*argc - 2));
  89       (*argv)[(*argc) - 1] = nullptr;
  90       (*argv)[(*argc) - 2] = nullptr;
  91     }
  92     (*argc)-=2;
  93     argc_ = argc;
  94     argv_ = argv;
  95     // set the process attached to the mailbox
  96     mailbox_small_->setReceiver(simgrid::s4u::Actor::self());
  97     XBT_DEBUG("<%d> New process in the game: %p", index, SIMIX_process_self());
  98 }
  99
 100 void Process::destroy()
 101 {
 102   if(smpi_privatize_global_variables){
 103     smpi_switch_data_segment(index_);
 104   }
 105   state_ = SMPI_FINALIZED;
 106   XBT_DEBUG("<%d> Process left the game", index_);
 107 }
 108
 109 /** @brief Prepares the current process for termination. */
 110 void Process::finalize()
 111 {
 112     // This leads to an explosion of the search graph which cannot be reduced:
 113     if(MC_is_active() || MC_record_replay_is_active())
 114       return;
 115     // wait for all pending asynchronous comms to finish
 116     MSG_barrier_wait(finalization_barrier_);
 117 }
 118
 119 /** @brief Check if a process is finalized */
 120 int Process::finalized()
 121 {
 122     if (index_ != MPI_UNDEFINED)
 123       return (state_ == SMPI_FINALIZED);
 124     else
 125       return 0;
 126 }
 127
 128 /** @brief Check if a process is initialized */
 129 int Process::initialized()
 130 {
 131   if (index_to_process_data == nullptr){
 132     return false;
 133   } else{
 134     return ((index_ != MPI_UNDEFINED) && (state_ == SMPI_INITIALIZED));
 135   }
 136 }
 137
 138 /** @brief Mark a process as initialized (=MPI_Init called) */
 139 void Process::mark_as_initialized()
 140 {
 141   if ((index_ != MPI_UNDEFINED) && (state_ != SMPI_FINALIZED))
 142     state_ = SMPI_INITIALIZED;
 143 }
 144
 145 void Process::set_replaying(bool value){
 146   if ((index_ != MPI_UNDEFINED) && (state_ != SMPI_FINALIZED))
 147     replaying_ = value;
 148 }
 149
 150 bool Process::replaying(){
 151   if (index_ != MPI_UNDEFINED)
 152     return replaying_;
 153   else
 154     return false;
 155 }
 156
 157 void Process::set_user_data(void *data)
 158 {
 159   data_ = data;
 160 }
 161
 162 void *Process::get_user_data()
 163 {
 164   return data_;
 165 }
 166
 167
 168 /**
 169  * \brief Returns a structure that stores the location (filename + linenumber)
 170  *        of the last calls to MPI_* functions.
 171  *
 172  * \see smpi_trace_set_call_location
 173  */
 174 smpi_trace_call_location_t* Process::call_location()
 175 {
 176   return &trace_call_loc_;
 177 }
 178
 179 int Process::index()
 180 {
 181   return index_;
 182 }
 183
 184 MPI_Comm Process::comm_world()
 185 {
 186   return comm_world_==nullptr ? MPI_COMM_NULL : *comm_world_;
 187 }
 188
 189 smx_mailbox_t Process::mailbox()
 190 {
 191   return mailbox_->getImpl();
 192 }
 193
 194 smx_mailbox_t Process::mailbox_small()
 195 {
 196   return mailbox_small_->getImpl();
 197 }
 198
 199 xbt_mutex_t Process::mailboxes_mutex()
 200 {
 201   return mailboxes_mutex_;
 202 }
 203
 204 #if HAVE_PAPI
 205 int Process::papi_event_set(void)
 206 {
 207   return papi_event_set_;
 208 }
 209
 210 papi_counter_t& smpi_process_papi_counters(void)
 211 {
 212   return papi_counter_data_;
 213 }
 214 #endif
 215
 216 xbt_os_timer_t Process::timer()
 217 {
 218   return timer_;
 219 }
 220
 221 void Process::simulated_start()
 222 {
 223   simulated_ = SIMIX_get_clock();
 224 }
 225
 226 double Process::simulated_elapsed()
 227 {
 228   return SIMIX_get_clock() - simulated_;
 229 }
 230
 231 MPI_Comm Process::comm_self()
 232 {
 233   if(comm_self_==MPI_COMM_NULL){
 234     MPI_Group group = new  Group(1);
 235     comm_self_ = new  Comm(group, nullptr);
 236     group->set_mapping(index_, 0);
 237   }
 238   return comm_self_;
 239 }
 240
 241 MPI_Comm Process::comm_intra()
 242 {
 243   return comm_intra_;
 244 }
 245
 246 void Process::set_comm_intra(MPI_Comm comm)
 247 {
 248   comm_intra_ = comm;
 249 }
 250
 251 void Process::set_sampling(int s)
 252 {
 253   sampling_ = s;
 254 }
 255
 256 int Process::sampling()
 257 {
 258   return sampling_;
 259 }
 260
 261 void Process::set_finalization_barrier(msg_bar_t bar){
 262   finalization_barrier_=bar;
 263 }
 264
 265 msg_bar_t Process::finalization_barrier(){
 266   return finalization_barrier_;
 267 }
 268
 269 int Process::return_value(){
 270   return return_value_;
 271 }
 272
 273 void Process::set_return_value(int val){
 274   return_value_=val;
 275 }
 276
 277 void Process::init(int *argc, char ***argv){
 278
 279   if (process_data == nullptr){
 280     printf("SimGrid was not initialized properly before entering MPI_Init. Aborting, please check compilation process and use smpirun\n");
 281     exit(1);
 282   }
 283   if (argc != nullptr && argv != nullptr) {
 284     smx_actor_t proc = SIMIX_process_self();
 285     proc->context->set_cleanup(&MSG_process_cleanup_from_SIMIX);
 286
 287     int index = smpi_process_index_of_smx_process(proc);
 288
 289     if(index_to_process_data == nullptr){
 290       index_to_process_data=static_cast<int*>(xbt_malloc(SIMIX_process_count()*sizeof(int)));
 291     }
 292
 293     char* instance_id = (*argv)[1];
 294     int rank = xbt_str_parse_int((*argv)[2], "Invalid rank: %s");
 295     smpi_deployment_register_process(instance_id, rank, index);
 296
 297     if(smpi_privatize_global_variables){
 298       /* Now using segment index of the process  */
 299       index = proc->segment_index;
 300       /* Done at the process's creation */
 301       SMPI_switch_data_segment(index);
 302     }
 303
 304     Process* process = smpi_process_remote(index);
 305     process->set_data(index, argc, argv);
 306   }
 307   xbt_assert(smpi_process(),
 308       "smpi_process() returned nullptr. You probably gave a nullptr parameter to MPI_Init. "
 309       "Although it's required by MPI-2, this is currently not supported by SMPI.");
 310 }
 311
 312 }
 313 }