1 /* Copyright (c) 2009-2017. The SimGrid Team. All rights reserved. */
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. */
7 #include "src/mc/mc_replay.h"
8 #include "src/msg/msg_private.h"
9 #include "src/simix/smx_private.h"
10 #include "src/smpi/smpi_process.hpp"
11 #include "src/smpi/smpi_group.hpp"
12 #include "src/smpi/smpi_comm.hpp"
14 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_process, smpi, "Logging specific to SMPI (kernel)");
17 extern simgrid::smpi::Process **process_data;
18 extern int* index_to_process_data;
20 #define MAILBOX_NAME_MAXLEN (5 + sizeof(int) * 2 + 1)
22 static char *get_mailbox_name(char *str, int index)
24 snprintf(str, MAILBOX_NAME_MAXLEN, "SMPI-%0*x", static_cast<int> (sizeof(int) * 2), index);
28 static char *get_mailbox_name_small(char *str, int index)
30 snprintf(str, MAILBOX_NAME_MAXLEN, "small%0*x", static_cast<int> (sizeof(int) * 2), index);
37 Process::Process(int index, msg_bar_t finalization_barrier)
38 : finalization_barrier_(finalization_barrier)
40 char name[MAILBOX_NAME_MAXLEN];
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 state_ = SMPI_UNINITIALIZED;
47 MC_ignore_heap(timer_, xbt_os_timer_size());
50 if (xbt_cfg_get_string("smpi/papi-events")[0] != '\0') {
51 // TODO: Implement host/process/thread based counters. This implementation
52 // just always takes the values passed via "default", like this:
53 // "default:COUNTER1:COUNTER2:COUNTER3;".
54 auto it = units2papi_setup.find(papi_default_config_name);
55 if (it != units2papi_setup.end()) {
56 papi_event_set_ = it->second.event_set;
57 papi_counter_data_ = it->second.counter_data;
58 XBT_DEBUG("Setting PAPI set for process %i", i);
60 papi_event_set_ = PAPI_NULL;
61 XBT_DEBUG("No PAPI set for process %i", i);
67 void Process::set_data(int index, int* argc, char*** argv)
69 char* instance_id = (*argv)[1];
70 comm_world_ = smpi_deployment_comm_world(instance_id);
71 msg_bar_t bar = smpi_deployment_finalization_barrier(instance_id);
72 if (bar!=nullptr) // don't overwrite the default one
73 finalization_barrier_ = bar;
74 instance_id_ = instance_id;
77 static_cast<simgrid::MsgActorExt*>(SIMIX_process_self()->data)->data = this;
80 memmove(&(*argv)[0], &(*argv)[2], sizeof(char *) * (*argc - 2));
81 (*argv)[(*argc) - 1] = nullptr;
82 (*argv)[(*argc) - 2] = nullptr;
87 // set the process attached to the mailbox
88 mailbox_small_->setReceiver(simgrid::s4u::Actor::self());
89 process_ = SIMIX_process_self();
90 XBT_DEBUG("<%d> New process in the game: %p", index_, SIMIX_process_self());
93 /** @brief Prepares the current process for termination. */
94 void Process::finalize()
96 state_ = SMPI_FINALIZED;
97 XBT_DEBUG("<%d> Process left the game", index_);
99 // This leads to an explosion of the search graph which cannot be reduced:
100 if(MC_is_active() || MC_record_replay_is_active())
102 // wait for all pending asynchronous comms to finish
103 MSG_barrier_wait(finalization_barrier_);
106 /** @brief Check if a process is finalized */
107 int Process::finalized()
109 if (index_ != MPI_UNDEFINED)
110 return (state_ == SMPI_FINALIZED);
115 /** @brief Check if a process is initialized */
116 int Process::initialized()
118 if (index_to_process_data == nullptr){
121 return ((index_ != MPI_UNDEFINED) && (state_ == SMPI_INITIALIZED));
125 /** @brief Mark a process as initialized (=MPI_Init called) */
126 void Process::mark_as_initialized()
128 if ((index_ != MPI_UNDEFINED) && (state_ != SMPI_FINALIZED))
129 state_ = SMPI_INITIALIZED;
132 void Process::set_replaying(bool value){
133 if ((index_ != MPI_UNDEFINED) && (state_ != SMPI_FINALIZED))
137 bool Process::replaying(){
138 if (index_ != MPI_UNDEFINED)
144 void Process::set_user_data(void *data)
149 void *Process::get_user_data()
154 smx_actor_t Process::process(){
160 * \brief Returns a structure that stores the location (filename + linenumber)
161 * of the last calls to MPI_* functions.
163 * \see smpi_trace_set_call_location
165 smpi_trace_call_location_t* Process::call_location()
167 return &trace_call_loc_;
175 MPI_Comm Process::comm_world()
177 return comm_world_==nullptr ? MPI_COMM_NULL : *comm_world_;
180 smx_mailbox_t Process::mailbox()
182 return mailbox_->getImpl();
185 smx_mailbox_t Process::mailbox_small()
187 return mailbox_small_->getImpl();
190 xbt_mutex_t Process::mailboxes_mutex()
192 return mailboxes_mutex_;
196 int Process::papi_event_set(void)
198 return papi_event_set_;
201 papi_counter_t& smpi_process_papi_counters(void)
203 return papi_counter_data_;
207 xbt_os_timer_t Process::timer()
212 void Process::simulated_start()
214 simulated_ = SIMIX_get_clock();
217 double Process::simulated_elapsed()
219 return SIMIX_get_clock() - simulated_;
222 MPI_Comm Process::comm_self()
224 if(comm_self_==MPI_COMM_NULL){
225 MPI_Group group = new Group(1);
226 comm_self_ = new Comm(group, nullptr);
227 group->set_mapping(index_, 0);
232 MPI_Comm Process::comm_intra()
237 void Process::set_comm_intra(MPI_Comm comm)
242 void Process::set_sampling(int s)
247 int Process::sampling()
252 msg_bar_t Process::finalization_barrier(){
253 return finalization_barrier_;
256 int Process::return_value(){
257 return return_value_;
260 void Process::set_return_value(int val){
264 void Process::init(int *argc, char ***argv){
266 if (process_data == nullptr){
267 printf("SimGrid was not initialized properly before entering MPI_Init. Aborting, please check compilation process and use smpirun\n");
270 if (argc != nullptr && argv != nullptr) {
271 smx_actor_t proc = SIMIX_process_self();
272 proc->context->set_cleanup(&MSG_process_cleanup_from_SIMIX);
274 int index = smpi_process_index_of_smx_process(proc);
276 if(index_to_process_data == nullptr){
277 index_to_process_data=static_cast<int*>(xbt_malloc(SIMIX_process_count()*sizeof(int)));
280 char* instance_id = (*argv)[1];
281 int rank = xbt_str_parse_int((*argv)[2], "Invalid rank: %s");
282 smpi_deployment_register_process(instance_id, rank, index);
284 if(smpi_privatize_global_variables == SMPI_PRIVATIZE_MMAP){
285 /* Now using segment index of the process */
286 index = proc->segment_index;
287 /* Done at the process's creation */
288 SMPI_switch_data_segment(index);
291 Process* process = smpi_process_remote(index);
292 process->set_data(index, argc, argv);
294 xbt_assert(smpi_process(),
295 "smpi_process() returned nullptr. You probably gave a nullptr parameter to MPI_Init. "
296 "Although it's required by MPI-2, this is currently not supported by SMPI.");