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;
45 MC_ignore_heap(timer_, xbt_os_timer_size());
48 if (xbt_cfg_get_string("smpi/papi-events")[0] != '\0') {
49 // TODO: Implement host/process/thread based counters. This implementation
50 // just always takes the values passed via "default", like this:
51 // "default:COUNTER1:COUNTER2:COUNTER3;".
52 auto it = units2papi_setup.find(papi_default_config_name);
53 if (it != units2papi_setup.end()) {
54 papi_event_set_ = it->second.event_set;
55 papi_counter_data_ = it->second.counter_data;
56 XBT_DEBUG("Setting PAPI set for process %i", i);
58 papi_event_set_ = PAPI_NULL;
59 XBT_DEBUG("No PAPI set for process %i", i);
65 void Process::set_data(int* argc, char*** argv)
68 char* instance_id = (*argv)[1];
69 comm_world_ = smpi_deployment_comm_world(instance_id);
70 msg_bar_t bar = smpi_deployment_finalization_barrier(instance_id);
71 if (bar!=nullptr) // don't overwrite the default one
72 finalization_barrier_ = bar;
73 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 void Process::destroy()
93 if(smpi_privatize_global_variables){
94 smpi_switch_data_segment(index_);
96 state_ = SMPI_FINALIZED;
97 XBT_DEBUG("<%d> Process left the game", index_);
100 /** @brief Prepares the current process for termination. */
101 void Process::finalize()
103 // This leads to an explosion of the search graph which cannot be reduced:
104 if(MC_is_active() || MC_record_replay_is_active())
106 // wait for all pending asynchronous comms to finish
107 MSG_barrier_wait(finalization_barrier_);
110 /** @brief Check if a process is finalized */
111 int Process::finalized()
113 if (index_ != MPI_UNDEFINED)
114 return (state_ == SMPI_FINALIZED);
119 /** @brief Check if a process is initialized */
120 int Process::initialized()
122 if (index_to_process_data == nullptr){
125 return ((index_ != MPI_UNDEFINED) && (state_ == SMPI_INITIALIZED));
129 /** @brief Mark a process as initialized (=MPI_Init called) */
130 void Process::mark_as_initialized()
132 if ((index_ != MPI_UNDEFINED) && (state_ != SMPI_FINALIZED))
133 state_ = SMPI_INITIALIZED;
136 void Process::set_replaying(bool value){
137 if ((index_ != MPI_UNDEFINED) && (state_ != SMPI_FINALIZED))
141 bool Process::replaying(){
142 if (index_ != MPI_UNDEFINED)
148 smx_actor_t Process::process(){
154 * \brief Returns a structure that stores the location (filename + linenumber)
155 * of the last calls to MPI_* functions.
157 * \see smpi_trace_set_call_location
159 smpi_trace_call_location_t* Process::call_location()
161 return &trace_call_loc_;
169 MPI_Comm Process::comm_world()
171 return comm_world_==nullptr ? MPI_COMM_NULL : *comm_world_;
174 smx_mailbox_t Process::mailbox()
176 return mailbox_->getImpl();
179 smx_mailbox_t Process::mailbox_small()
181 return mailbox_small_->getImpl();
184 xbt_mutex_t Process::mailboxes_mutex()
186 return mailboxes_mutex_;
190 int Process::papi_event_set(void)
192 return papi_event_set_;
195 papi_counter_t& smpi_process_papi_counters(void)
197 return papi_counter_data_;
201 xbt_os_timer_t Process::timer()
206 void Process::simulated_start()
208 simulated_ = SIMIX_get_clock();
211 double Process::simulated_elapsed()
213 return SIMIX_get_clock() - simulated_;
216 MPI_Comm Process::comm_self()
218 if(comm_self_==MPI_COMM_NULL){
219 MPI_Group group = new Group(1);
220 comm_self_ = new Comm(group, nullptr);
221 group->set_mapping(index_, 0);
226 MPI_Comm Process::comm_intra()
231 void Process::set_comm_intra(MPI_Comm comm)
236 void Process::set_sampling(int s)
241 int Process::sampling()
246 void Process::set_finalization_barrier(msg_bar_t bar){
247 finalization_barrier_=bar;
250 msg_bar_t Process::finalization_barrier(){
251 return finalization_barrier_;
254 int Process::return_value(){
255 return return_value_;
258 void Process::set_return_value(int val){
262 void Process::init(int *argc, char ***argv){
264 if (process_data == nullptr){
265 printf("SimGrid was not initialized properly before entering MPI_Init. Aborting, please check compilation process and use smpirun\n");
268 if (argc != nullptr && argv != nullptr) {
269 smx_actor_t proc = SIMIX_process_self();
270 proc->context->set_cleanup(&MSG_process_cleanup_from_SIMIX);
272 int index = smpi_process_index_of_smx_process(proc);
274 if(index_to_process_data == nullptr){
275 index_to_process_data=static_cast<int*>(xbt_malloc(SIMIX_process_count()*sizeof(int)));
278 char* instance_id = (*argv)[1];
279 int rank = xbt_str_parse_int((*argv)[2], "Invalid rank: %s");
280 smpi_deployment_register_process(instance_id, rank, index);
282 if(smpi_privatize_global_variables){
283 /* Now using segment index of the process */
284 index = proc->segment_index;
285 /* Done at the process's creation */
286 SMPI_switch_data_segment(index);
289 Process* process = smpi_process_remote(index);
290 process->set_data(argc, argv);
292 xbt_assert(smpi_process(),
293 "smpi_process() returned nullptr. You probably gave a nullptr parameter to MPI_Init. "
294 "Although it's required by MPI-2, this is currently not supported by SMPI.");