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 "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"
17 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_process, smpi, "Logging specific to SMPI (kernel)");
22 using simgrid::s4u::Actor;
23 using simgrid::s4u::ActorPtr;
25 Process::Process(ActorPtr actor, msg_bar_t finalization_barrier)
26 : finalization_barrier_(finalization_barrier)
28 std::stringstream mailboxname, mailboxname_small;
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;
38 MC_ignore_heap(timer_, xbt_os_timer_size());
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);
51 papi_event_set_ = PAPI_NULL;
52 XBT_DEBUG("No PAPI set for process %i", i);
58 void Process::set_data(int* argc, char*** argv)
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;
66 process_ = simgrid::s4u::Actor::self();
67 static_cast<simgrid::msg::ActorExt*>(process_->getImpl()->userdata)->data = this;
70 memmove(&(*argv)[0], &(*argv)[2], sizeof(char*) * (*argc - 2));
71 (*argv)[(*argc) - 1] = nullptr;
72 (*argv)[(*argc) - 2] = nullptr;
77 // set the process attached to the mailbox
78 mailbox_small_->setReceiver(process_);
79 XBT_DEBUG("<%lu> New process in the game: %p", process_->getPid(), process_);
82 /** @brief Prepares the current process for termination. */
83 void Process::finalize()
85 state_ = SMPI_FINALIZED;
86 XBT_DEBUG("<%lu> Process left the game", process_->getPid());
88 // This leads to an explosion of the search graph which cannot be reduced:
89 if(MC_is_active() || MC_record_replay_is_active())
91 // wait for all pending asynchronous comms to finish
92 MSG_barrier_wait(finalization_barrier_);
95 /** @brief Check if a process is finalized */
96 int Process::finalized()
98 return (state_ == SMPI_FINALIZED);
101 /** @brief Check if a process is initialized */
102 int Process::initialized()
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);
109 /** @brief Mark a process as initialized (=MPI_Init called) */
110 void Process::mark_as_initialized()
112 if (state_ != SMPI_FINALIZED)
113 state_ = SMPI_INITIALIZED;
116 void Process::set_replaying(bool value){
117 if (state_ != SMPI_FINALIZED)
121 bool Process::replaying(){
125 void Process::set_user_data(void *data)
130 void *Process::get_user_data()
135 ActorPtr Process::process(){
140 * \brief Returns a structure that stores the location (filename + linenumber) of the last calls to MPI_* functions.
142 * \see smpi_trace_set_call_location
144 smpi_trace_call_location_t* Process::call_location()
146 return &trace_call_loc_;
149 void Process::set_privatized_region(smpi_privatization_region_t region)
151 privatized_region_ = region;
154 smpi_privatization_region_t Process::privatized_region()
156 return privatized_region_;
159 MPI_Comm Process::comm_world()
161 return comm_world_==nullptr ? MPI_COMM_NULL : *comm_world_;
164 smx_mailbox_t Process::mailbox()
166 return mailbox_->getImpl();
169 smx_mailbox_t Process::mailbox_small()
171 return mailbox_small_->getImpl();
174 xbt_mutex_t Process::mailboxes_mutex()
176 return mailboxes_mutex_;
180 int Process::papi_event_set()
182 return papi_event_set_;
185 papi_counter_t& smpi_process_papi_counters()
187 return papi_counter_data_;
191 xbt_os_timer_t Process::timer()
196 void Process::simulated_start()
198 simulated_ = SIMIX_get_clock();
201 double Process::simulated_elapsed()
203 return SIMIX_get_clock() - simulated_;
206 MPI_Comm Process::comm_self()
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);
216 MPI_Comm Process::comm_intra()
221 void Process::set_comm_intra(MPI_Comm comm)
226 void Process::set_sampling(int s)
231 int Process::sampling()
236 msg_bar_t Process::finalization_barrier(){
237 return finalization_barrier_;
240 int Process::return_value(){
241 return return_value_;
244 void Process::set_return_value(int val){
248 void Process::init(int *argc, char ***argv){
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");
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);
257 char* instance_id = (*argv)[1];
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]);
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);
276 process->set_data(argc, argv);
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.");