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 mailbox_ = simgrid::s4u::Mailbox::byName(get_mailbox_name(name, index));
39 mailbox_small_ = simgrid::s4u::Mailbox::byName(get_mailbox_name_small(name, index));
40 mailboxes_mutex_ = xbt_mutex_init();
41 timer_ = xbt_os_timer_new();
42 state_ = SMPI_UNINITIALIZED;
44 MC_ignore_heap(timer_, xbt_os_timer_size());
47 if (xbt_cfg_get_string("smpi/papi-events")[0] != '\0') {
48 // TODO: Implement host/process/thread based counters. This implementation
49 // just always takes the values passed via "default", like this:
50 // "default:COUNTER1:COUNTER2:COUNTER3;".
51 auto it = units2papi_setup.find(papi_default_config_name);
52 if (it != units2papi_setup.end()) {
53 papi_event_set_ = it->second.event_set;
54 papi_counter_data_ = it->second.counter_data;
55 XBT_DEBUG("Setting PAPI set for process %i", i);
57 papi_event_set_ = PAPI_NULL;
58 XBT_DEBUG("No PAPI set for process %i", i);
64 void Process::set_data(int index, int* argc, char*** argv)
67 char* instance_id = (*argv)[1];
68 comm_world_ = smpi_deployment_comm_world(instance_id);
69 msg_bar_t bar = smpi_deployment_finalization_barrier(instance_id);
70 if (bar!=nullptr) // don't overwrite the default one
71 finalization_barrier_ = bar;
72 instance_id_ = instance_id;
75 static_cast<simgrid::MsgActorExt*>(SIMIX_process_self()->data)->data = this;
78 memmove(&(*argv)[0], &(*argv)[2], sizeof(char *) * (*argc - 2));
79 (*argv)[(*argc) - 1] = nullptr;
80 (*argv)[(*argc) - 2] = nullptr;
85 // set the process attached to the mailbox
86 mailbox_small_->setReceiver(simgrid::s4u::Actor::self());
87 process_ = SIMIX_process_self();
88 XBT_DEBUG("<%d> New process in the game: %p", index_, SIMIX_process_self());
91 /** @brief Prepares the current process for termination. */
92 void Process::finalize()
94 state_ = SMPI_FINALIZED;
95 XBT_DEBUG("<%d> Process left the game", index_);
97 // This leads to an explosion of the search graph which cannot be reduced:
98 if(MC_is_active() || MC_record_replay_is_active())
100 // wait for all pending asynchronous comms to finish
101 MSG_barrier_wait(finalization_barrier_);
104 /** @brief Check if a process is finalized */
105 int Process::finalized()
107 if (index_ != MPI_UNDEFINED)
108 return (state_ == SMPI_FINALIZED);
113 /** @brief Check if a process is initialized */
114 int Process::initialized()
116 if (index_to_process_data == nullptr){
119 return ((index_ != MPI_UNDEFINED) && (state_ == SMPI_INITIALIZED));
123 /** @brief Mark a process as initialized (=MPI_Init called) */
124 void Process::mark_as_initialized()
126 if ((index_ != MPI_UNDEFINED) && (state_ != SMPI_FINALIZED))
127 state_ = SMPI_INITIALIZED;
130 void Process::set_replaying(bool value){
131 if ((index_ != MPI_UNDEFINED) && (state_ != SMPI_FINALIZED))
135 bool Process::replaying(){
136 if (index_ != MPI_UNDEFINED)
142 smx_actor_t Process::process(){
148 * \brief Returns a structure that stores the location (filename + linenumber)
149 * of the last calls to MPI_* functions.
151 * \see smpi_trace_set_call_location
153 smpi_trace_call_location_t* Process::call_location()
155 return &trace_call_loc_;
163 MPI_Comm Process::comm_world()
165 return comm_world_==nullptr ? MPI_COMM_NULL : *comm_world_;
168 smx_mailbox_t Process::mailbox()
170 return mailbox_->getImpl();
173 smx_mailbox_t Process::mailbox_small()
175 return mailbox_small_->getImpl();
178 xbt_mutex_t Process::mailboxes_mutex()
180 return mailboxes_mutex_;
184 int Process::papi_event_set(void)
186 return papi_event_set_;
189 papi_counter_t& smpi_process_papi_counters(void)
191 return papi_counter_data_;
195 xbt_os_timer_t Process::timer()
200 void Process::simulated_start()
202 simulated_ = SIMIX_get_clock();
205 double Process::simulated_elapsed()
207 return SIMIX_get_clock() - simulated_;
210 MPI_Comm Process::comm_self()
212 if(comm_self_==MPI_COMM_NULL){
213 MPI_Group group = new Group(1);
214 comm_self_ = new Comm(group, nullptr);
215 group->set_mapping(index_, 0);
220 MPI_Comm Process::comm_intra()
225 void Process::set_comm_intra(MPI_Comm comm)
230 void Process::set_sampling(int s)
235 int Process::sampling()
240 void Process::set_finalization_barrier(msg_bar_t bar){
241 finalization_barrier_=bar;
244 msg_bar_t Process::finalization_barrier(){
245 return finalization_barrier_;
248 int Process::return_value(){
249 return return_value_;
252 void Process::set_return_value(int val){
256 void Process::init(int *argc, char ***argv){
258 if (process_data == nullptr){
259 printf("SimGrid was not initialized properly before entering MPI_Init. Aborting, please check compilation process and use smpirun\n");
262 if (argc != nullptr && argv != nullptr) {
263 smx_actor_t proc = SIMIX_process_self();
264 proc->context->set_cleanup(&MSG_process_cleanup_from_SIMIX);
266 int index = smpi_process_index_of_smx_process(proc);
268 if(index_to_process_data == nullptr){
269 index_to_process_data=static_cast<int*>(xbt_malloc(SIMIX_process_count()*sizeof(int)));
272 char* instance_id = (*argv)[1];
273 int rank = xbt_str_parse_int((*argv)[2], "Invalid rank: %s");
274 smpi_deployment_register_process(instance_id, rank, index);
276 if(smpi_privatize_global_variables == SMPI_PRIVATIZE_MMAP){
277 /* Now using segment index of the process */
278 index = proc->segment_index;
279 /* Done at the process's creation */
280 SMPI_switch_data_segment(index);
283 Process* process = smpi_process_remote(index);
284 process->set_data(index, argc, argv);
286 xbt_assert(smpi_process(),
287 "smpi_process() returned nullptr. You probably gave a nullptr parameter to MPI_Init. "
288 "Although it's required by MPI-2, this is currently not supported by SMPI.");