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"
10 #include "xbt/replay.hpp"
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_process, smpi, "Logging specific to SMPI (kernel)");
15 extern simgrid::smpi::Process **process_data;
16 extern int* index_to_process_data;
18 #define MAILBOX_NAME_MAXLEN (5 + sizeof(int) * 2 + 1)
20 static char *get_mailbox_name(char *str, int index)
22 snprintf(str, MAILBOX_NAME_MAXLEN, "SMPI-%0*x", static_cast<int> (sizeof(int) * 2), index);
26 static char *get_mailbox_name_small(char *str, int index)
28 snprintf(str, MAILBOX_NAME_MAXLEN, "small%0*x", static_cast<int> (sizeof(int) * 2), index);
35 Process::Process(int index)
37 char name[MAILBOX_NAME_MAXLEN];
38 index_ = MPI_UNDEFINED;
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();
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;
52 finalization_barrier_ = nullptr;
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);
66 papi_event_set_ = PAPI_NULL;
67 XBT_DEBUG("No PAPI set for process %i", i);
73 void Process::set_data(int index, int *argc, char ***argv)
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;
82 instance_id_ = instance_id;
85 static_cast<simgrid::MsgActorExt*>(SIMIX_process_self()->data)->data = this;
88 memmove(&(*argv)[0], &(*argv)[2], sizeof(char *) * (*argc - 2));
89 (*argv)[(*argc) - 1] = nullptr;
90 (*argv)[(*argc) - 2] = nullptr;
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());
100 void Process::destroy()
102 if(smpi_privatize_global_variables){
103 smpi_switch_data_segment(index_);
105 state_ = SMPI_FINALIZED;
106 XBT_DEBUG("<%d> Process left the game", index_);
109 /** @brief Prepares the current process for termination. */
110 void Process::finalize()
112 // This leads to an explosion of the search graph which cannot be reduced:
113 if(MC_is_active() || MC_record_replay_is_active())
115 // wait for all pending asynchronous comms to finish
116 MSG_barrier_wait(finalization_barrier_);
119 /** @brief Check if a process is finalized */
120 int Process::finalized()
122 if (index_ != MPI_UNDEFINED)
123 return (state_ == SMPI_FINALIZED);
128 /** @brief Check if a process is initialized */
129 int Process::initialized()
131 if (index_to_process_data == nullptr){
134 return ((index_ != MPI_UNDEFINED) && (state_ == SMPI_INITIALIZED));
138 /** @brief Mark a process as initialized (=MPI_Init called) */
139 void Process::mark_as_initialized()
141 if ((index_ != MPI_UNDEFINED) && (state_ != SMPI_FINALIZED))
142 state_ = SMPI_INITIALIZED;
145 void Process::set_replaying(bool value){
146 if ((index_ != MPI_UNDEFINED) && (state_ != SMPI_FINALIZED))
150 bool Process::replaying(){
151 if (index_ != MPI_UNDEFINED)
157 void Process::set_user_data(void *data)
162 void *Process::get_user_data()
169 * \brief Returns a structure that stores the location (filename + linenumber)
170 * of the last calls to MPI_* functions.
172 * \see smpi_trace_set_call_location
174 smpi_trace_call_location_t* Process::call_location()
176 return &trace_call_loc_;
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(void)
207 return papi_event_set_;
210 papi_counter_t& smpi_process_papi_counters(void)
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 void Process::set_finalization_barrier(msg_bar_t bar){
262 finalization_barrier_=bar;
265 msg_bar_t Process::finalization_barrier(){
266 return finalization_barrier_;
269 int Process::return_value(){
270 return return_value_;
273 void Process::set_return_value(int val){
277 void Process::init(int *argc, char ***argv){
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");
283 if (argc != nullptr && argv != nullptr) {
284 smx_actor_t proc = SIMIX_process_self();
285 proc->context->set_cleanup(&MSG_process_cleanup_from_SIMIX);
287 int index = smpi_process_index_of_smx_process(proc);
289 if(index_to_process_data == nullptr){
290 index_to_process_data=static_cast<int*>(xbt_malloc(SIMIX_process_count()*sizeof(int)));
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);
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);
304 Process* process = smpi_process_remote(index);
305 process->set_data(index, argc, argv);
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.");