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. */
6 #include "smpi_process.hpp"
9 #include "smpi_comm.hpp"
10 #include "smpi_group.hpp"
11 #include "src/mc/mc_replay.hpp"
12 #include "src/msg/msg_private.hpp"
13 #include "src/simix/smx_private.hpp"
15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_process, smpi, "Logging specific to SMPI (kernel)");
18 extern simgrid::smpi::Process **process_data;
19 extern int* index_to_process_data;
21 #define MAILBOX_NAME_MAXLEN (5 + sizeof(int) * 2 + 1)
23 static char *get_mailbox_name(char *str, int index)
25 snprintf(str, MAILBOX_NAME_MAXLEN, "SMPI-%0*x", static_cast<int>(sizeof(int) * 2), static_cast<unsigned>(index));
29 static char *get_mailbox_name_small(char *str, int index)
31 snprintf(str, MAILBOX_NAME_MAXLEN, "small%0*x", static_cast<int>(sizeof(int) * 2), static_cast<unsigned>(index));
38 Process::Process(int index, msg_bar_t finalization_barrier)
39 : finalization_barrier_(finalization_barrier)
41 char name[MAILBOX_NAME_MAXLEN];
42 mailbox_ = simgrid::s4u::Mailbox::byName(get_mailbox_name(name, index));
43 mailbox_small_ = simgrid::s4u::Mailbox::byName(get_mailbox_name_small(name, index));
44 mailboxes_mutex_ = xbt_mutex_init();
45 timer_ = xbt_os_timer_new();
46 state_ = SMPI_UNINITIALIZED;
48 MC_ignore_heap(timer_, xbt_os_timer_size());
51 if (xbt_cfg_get_string("smpi/papi-events")[0] != '\0') {
52 // TODO: Implement host/process/thread based counters. This implementation
53 // just always takes the values passed via "default", like this:
54 // "default:COUNTER1:COUNTER2:COUNTER3;".
55 auto it = units2papi_setup.find(papi_default_config_name);
56 if (it != units2papi_setup.end()) {
57 papi_event_set_ = it->second.event_set;
58 papi_counter_data_ = it->second.counter_data;
59 XBT_DEBUG("Setting PAPI set for process %i", i);
61 papi_event_set_ = PAPI_NULL;
62 XBT_DEBUG("No PAPI set for process %i", i);
68 void Process::set_data(int index, int* argc, char*** argv)
70 char* instance_id = (*argv)[1];
71 comm_world_ = smpi_deployment_comm_world(instance_id);
72 msg_bar_t bar = smpi_deployment_finalization_barrier(instance_id);
73 if (bar != nullptr) // don't overwrite the current one if the instance has none
74 finalization_barrier_ = bar;
75 instance_id_ = instance_id;
78 static_cast<simgrid::msg::ActorExt*>(SIMIX_process_self()->userdata)->data = this;
81 memmove(&(*argv)[0], &(*argv)[2], sizeof(char *) * (*argc - 2));
82 (*argv)[(*argc) - 1] = nullptr;
83 (*argv)[(*argc) - 2] = nullptr;
88 // set the process attached to the mailbox
89 mailbox_small_->setReceiver(simgrid::s4u::Actor::self());
90 process_ = SIMIX_process_self();
91 XBT_DEBUG("<%d> New process in the game: %p", index_, SIMIX_process_self());
94 /** @brief Prepares the current process for termination. */
95 void Process::finalize()
97 state_ = SMPI_FINALIZED;
98 XBT_DEBUG("<%d> Process left the game", index_);
100 // This leads to an explosion of the search graph which cannot be reduced:
101 if(MC_is_active() || MC_record_replay_is_active())
103 // wait for all pending asynchronous comms to finish
104 MSG_barrier_wait(finalization_barrier_);
107 /** @brief Check if a process is finalized */
108 int Process::finalized()
110 if (index_ != MPI_UNDEFINED)
111 return (state_ == SMPI_FINALIZED);
116 /** @brief Check if a process is initialized */
117 int Process::initialized()
119 if (index_to_process_data == nullptr){
122 return ((index_ != MPI_UNDEFINED) && (state_ == SMPI_INITIALIZED));
126 /** @brief Mark a process as initialized (=MPI_Init called) */
127 void Process::mark_as_initialized()
129 if ((index_ != MPI_UNDEFINED) && (state_ != SMPI_FINALIZED))
130 state_ = SMPI_INITIALIZED;
133 void Process::set_replaying(bool value){
134 if ((index_ != MPI_UNDEFINED) && (state_ != SMPI_FINALIZED))
138 bool Process::replaying(){
139 if (index_ != MPI_UNDEFINED)
145 void Process::set_user_data(void *data)
150 void *Process::get_user_data()
155 smx_actor_t Process::process(){
160 * \brief Returns a structure that stores the location (filename + linenumber) of the last calls to MPI_* functions.
162 * \see smpi_trace_set_call_location
164 smpi_trace_call_location_t* Process::call_location()
166 return &trace_call_loc_;
169 void Process::set_privatized_region(smpi_privatization_region_t region)
171 privatized_region_ = region;
174 smpi_privatization_region_t Process::privatized_region()
176 return privatized_region_;
184 MPI_Comm Process::comm_world()
186 return comm_world_==nullptr ? MPI_COMM_NULL : *comm_world_;
189 smx_mailbox_t Process::mailbox()
191 return mailbox_->getImpl();
194 smx_mailbox_t Process::mailbox_small()
196 return mailbox_small_->getImpl();
199 xbt_mutex_t Process::mailboxes_mutex()
201 return mailboxes_mutex_;
205 int Process::papi_event_set()
207 return papi_event_set_;
210 papi_counter_t& smpi_process_papi_counters()
212 return papi_counter_data_;
216 xbt_os_timer_t Process::timer()
221 void Process::simulated_start()
223 simulated_ = SIMIX_get_clock();
226 double Process::simulated_elapsed()
228 return SIMIX_get_clock() - simulated_;
231 MPI_Comm Process::comm_self()
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);
241 MPI_Comm Process::comm_intra()
246 void Process::set_comm_intra(MPI_Comm comm)
251 void Process::set_sampling(int s)
256 int Process::sampling()
261 msg_bar_t Process::finalization_barrier(){
262 return finalization_barrier_;
265 int Process::return_value(){
266 return return_value_;
269 void Process::set_return_value(int val){
273 void Process::init(int *argc, char ***argv){
275 if (process_data == nullptr){
276 printf("SimGrid was not initialized properly before entering MPI_Init. Aborting, please check compilation process and use smpirun\n");
279 if (argc != nullptr && argv != nullptr) {
280 smx_actor_t proc = SIMIX_process_self();
281 proc->context->set_cleanup(&MSG_process_cleanup_from_SIMIX);
283 int index = proc->pid - 1; // The maestro process has always ID 0 but we don't need that process here
285 if(index_to_process_data == nullptr){
286 index_to_process_data=static_cast<int*>(xbt_malloc(SIMIX_process_count()*sizeof(int)));
289 char* instance_id = (*argv)[1];
291 int rank = std::stoi(std::string((*argv)[2]));
292 smpi_deployment_register_process(instance_id, rank, index);
293 } catch (std::invalid_argument& ia) {
294 throw std::invalid_argument(std::string("Invalid rank: ") + (*argv)[2]);
297 // cheinrich: I'm not sure what the impact of the SMPI_switch_data_segment on this call is. I moved
298 // this up here so that I can set the privatized region before the switch.
299 Process* process = smpi_process_remote(index);
300 if(smpi_privatize_global_variables == SMPI_PRIVATIZE_MMAP){
301 /* Now using segment index of the process */
302 index = proc->segment_index;
303 process->set_privatized_region(smpi_init_global_memory_segment_process());
304 /* Done at the process's creation */
305 SMPI_switch_data_segment(index);
308 process->set_data(index, argc, argv);
310 xbt_assert(smpi_process(),
311 "smpi_process() returned nullptr. You probably gave a nullptr parameter to MPI_Init. "
312 "Although it's required by MPI-2, this is currently not supported by SMPI.");