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. */
7 #include "src/mc/mc_replay.h"
8 #include "src/msg/msg_private.hpp"
9 #include "src/simix/smx_private.hpp"
11 #include "private.hpp"
12 #include "smpi_process.hpp"
13 #include "smpi_group.hpp"
14 #include "smpi_comm.hpp"
16 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_process, smpi, "Logging specific to SMPI (kernel)");
19 extern simgrid::smpi::Process **process_data;
20 extern int* index_to_process_data;
22 #define MAILBOX_NAME_MAXLEN (5 + sizeof(int) * 2 + 1)
24 static char *get_mailbox_name(char *str, int index)
26 snprintf(str, MAILBOX_NAME_MAXLEN, "SMPI-%0*x", static_cast<int>(sizeof(int) * 2), static_cast<unsigned>(index));
30 static char *get_mailbox_name_small(char *str, int index)
32 snprintf(str, MAILBOX_NAME_MAXLEN, "small%0*x", static_cast<int>(sizeof(int) * 2), static_cast<unsigned>(index));
39 Process::Process(int index, msg_bar_t finalization_barrier)
40 : finalization_barrier_(finalization_barrier)
42 char name[MAILBOX_NAME_MAXLEN];
43 mailbox_ = simgrid::s4u::Mailbox::byName(get_mailbox_name(name, index));
44 mailbox_small_ = simgrid::s4u::Mailbox::byName(get_mailbox_name_small(name, index));
45 mailboxes_mutex_ = xbt_mutex_init();
46 timer_ = xbt_os_timer_new();
47 state_ = SMPI_UNINITIALIZED;
49 MC_ignore_heap(timer_, xbt_os_timer_size());
52 if (xbt_cfg_get_string("smpi/papi-events")[0] != '\0') {
53 // TODO: Implement host/process/thread based counters. This implementation
54 // just always takes the values passed via "default", like this:
55 // "default:COUNTER1:COUNTER2:COUNTER3;".
56 auto it = units2papi_setup.find(papi_default_config_name);
57 if (it != units2papi_setup.end()) {
58 papi_event_set_ = it->second.event_set;
59 papi_counter_data_ = it->second.counter_data;
60 XBT_DEBUG("Setting PAPI set for process %i", i);
62 papi_event_set_ = PAPI_NULL;
63 XBT_DEBUG("No PAPI set for process %i", i);
69 void Process::set_data(int index, int* argc, char*** argv)
71 char* instance_id = (*argv)[1];
72 comm_world_ = smpi_deployment_comm_world(instance_id);
73 msg_bar_t bar = smpi_deployment_finalization_barrier(instance_id);
74 if (bar!=nullptr) // don't overwrite the default one
75 finalization_barrier_ = bar;
76 instance_id_ = instance_id;
79 static_cast<simgrid::msg::ActorExt*>(SIMIX_process_self()->userdata)->data = this;
82 memmove(&(*argv)[0], &(*argv)[2], sizeof(char *) * (*argc - 2));
83 (*argv)[(*argc) - 1] = nullptr;
84 (*argv)[(*argc) - 2] = nullptr;
89 // set the process attached to the mailbox
90 mailbox_small_->setReceiver(simgrid::s4u::Actor::self());
91 process_ = SIMIX_process_self();
92 XBT_DEBUG("<%d> New process in the game: %p", index_, SIMIX_process_self());
95 /** @brief Prepares the current process for termination. */
96 void Process::finalize()
98 state_ = SMPI_FINALIZED;
99 XBT_DEBUG("<%d> Process left the game", index_);
101 // This leads to an explosion of the search graph which cannot be reduced:
102 if(MC_is_active() || MC_record_replay_is_active())
104 // wait for all pending asynchronous comms to finish
105 MSG_barrier_wait(finalization_barrier_);
108 /** @brief Check if a process is finalized */
109 int Process::finalized()
111 if (index_ != MPI_UNDEFINED)
112 return (state_ == SMPI_FINALIZED);
117 /** @brief Check if a process is initialized */
118 int Process::initialized()
120 if (index_to_process_data == nullptr){
123 return ((index_ != MPI_UNDEFINED) && (state_ == SMPI_INITIALIZED));
127 /** @brief Mark a process as initialized (=MPI_Init called) */
128 void Process::mark_as_initialized()
130 if ((index_ != MPI_UNDEFINED) && (state_ != SMPI_FINALIZED))
131 state_ = SMPI_INITIALIZED;
134 void Process::set_replaying(bool value){
135 if ((index_ != MPI_UNDEFINED) && (state_ != SMPI_FINALIZED))
139 bool Process::replaying(){
140 if (index_ != MPI_UNDEFINED)
146 void Process::set_user_data(void *data)
151 void *Process::get_user_data()
156 smx_actor_t Process::process(){
161 * \brief Returns a structure that stores the location (filename + linenumber) of the last calls to MPI_* functions.
163 * \see smpi_trace_set_call_location
165 smpi_trace_call_location_t* Process::call_location()
167 return &trace_call_loc_;
175 MPI_Comm Process::comm_world()
177 return comm_world_==nullptr ? MPI_COMM_NULL : *comm_world_;
180 smx_mailbox_t Process::mailbox()
182 return mailbox_->getImpl();
185 smx_mailbox_t Process::mailbox_small()
187 return mailbox_small_->getImpl();
190 xbt_mutex_t Process::mailboxes_mutex()
192 return mailboxes_mutex_;
196 int Process::papi_event_set()
198 return papi_event_set_;
201 papi_counter_t& smpi_process_papi_counters()
203 return papi_counter_data_;
207 xbt_os_timer_t Process::timer()
212 void Process::simulated_start()
214 simulated_ = SIMIX_get_clock();
217 double Process::simulated_elapsed()
219 return SIMIX_get_clock() - simulated_;
222 MPI_Comm Process::comm_self()
224 if(comm_self_==MPI_COMM_NULL){
225 MPI_Group group = new Group(1);
226 comm_self_ = new Comm(group, nullptr);
227 group->set_mapping(index_, 0);
232 MPI_Comm Process::comm_intra()
237 void Process::set_comm_intra(MPI_Comm comm)
242 void Process::set_sampling(int s)
247 int Process::sampling()
252 msg_bar_t Process::finalization_barrier(){
253 return finalization_barrier_;
256 int Process::return_value(){
257 return return_value_;
260 void Process::set_return_value(int val){
264 void Process::init(int *argc, char ***argv){
266 if (process_data == nullptr){
267 printf("SimGrid was not initialized properly before entering MPI_Init. Aborting, please check compilation process and use smpirun\n");
270 if (argc != nullptr && argv != nullptr) {
271 smx_actor_t proc = SIMIX_process_self();
272 proc->context->set_cleanup(&MSG_process_cleanup_from_SIMIX);
274 int index = proc->pid - 1;
276 if(index_to_process_data == nullptr){
277 index_to_process_data=static_cast<int*>(xbt_malloc(SIMIX_process_count()*sizeof(int)));
280 char* instance_id = (*argv)[1];
282 int rank = std::stoi(std::string((*argv)[2]));
283 smpi_deployment_register_process(instance_id, rank, index);
284 } catch (std::invalid_argument& ia) {
285 throw std::invalid_argument(std::string("Invalid rank: ") + (*argv)[2]);
288 if(smpi_privatize_global_variables == SMPI_PRIVATIZE_MMAP){
289 /* Now using segment index of the process */
290 index = proc->segment_index;
291 /* Done at the process's creation */
292 SMPI_switch_data_segment(index);
295 Process* process = smpi_process_remote(index);
296 process->set_data(index, argc, argv);
298 xbt_assert(smpi_process(),
299 "smpi_process() returned nullptr. You probably gave a nullptr parameter to MPI_Init. "
300 "Although it's required by MPI-2, this is currently not supported by SMPI.");