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.h"
9 #include "src/simix/smx_private.h"
11 #include "private.hpp"
12 #include "smpi_process.hpp"
13 #include "smpi_group.hpp"
14 #include "smpi_comm.hpp"
17 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_process, smpi, "Logging specific to SMPI (kernel)");
20 extern simgrid::smpi::Process **process_data;
21 extern int* index_to_process_data;
23 #define MAILBOX_NAME_MAXLEN (5 + sizeof(int) * 2 + 1)
25 static char *get_mailbox_name(char *str, int index)
27 snprintf(str, MAILBOX_NAME_MAXLEN, "SMPI-%0*x", static_cast<int>(sizeof(int) * 2), static_cast<unsigned>(index));
31 static char *get_mailbox_name_small(char *str, int index)
33 snprintf(str, MAILBOX_NAME_MAXLEN, "small%0*x", static_cast<int>(sizeof(int) * 2), static_cast<unsigned>(index));
40 Process::Process(int index, msg_bar_t finalization_barrier)
41 : finalization_barrier_(finalization_barrier)
43 char name[MAILBOX_NAME_MAXLEN];
44 mailbox_ = simgrid::s4u::Mailbox::byName(get_mailbox_name(name, index));
45 mailbox_small_ = simgrid::s4u::Mailbox::byName(get_mailbox_name_small(name, index));
46 mailboxes_mutex_ = xbt_mutex_init();
47 timer_ = xbt_os_timer_new();
48 state_ = SMPI_UNINITIALIZED;
50 MC_ignore_heap(timer_, xbt_os_timer_size());
53 if (xbt_cfg_get_string("smpi/papi-events")[0] != '\0') {
54 // TODO: Implement host/process/thread based counters. This implementation
55 // just always takes the values passed via "default", like this:
56 // "default:COUNTER1:COUNTER2:COUNTER3;".
57 auto it = units2papi_setup.find(papi_default_config_name);
58 if (it != units2papi_setup.end()) {
59 papi_event_set_ = it->second.event_set;
60 papi_counter_data_ = it->second.counter_data;
61 XBT_DEBUG("Setting PAPI set for process %i", i);
63 papi_event_set_ = PAPI_NULL;
64 XBT_DEBUG("No PAPI set for process %i", i);
70 void Process::set_data(int index, int* argc, char*** argv)
72 char* instance_id = (*argv)[1];
73 comm_world_ = smpi_deployment_comm_world(instance_id);
74 msg_bar_t bar = smpi_deployment_finalization_barrier(instance_id);
75 if (bar!=nullptr) // don't overwrite the default one
76 finalization_barrier_ = bar;
77 instance_id_ = instance_id;
80 static_cast<simgrid::msg::ActorExt*>(SIMIX_process_self()->userdata)->data = this;
83 memmove(&(*argv)[0], &(*argv)[2], sizeof(char *) * (*argc - 2));
84 (*argv)[(*argc) - 1] = nullptr;
85 (*argv)[(*argc) - 2] = nullptr;
90 // set the process attached to the mailbox
91 mailbox_small_->setReceiver(simgrid::s4u::Actor::self());
92 process_ = SIMIX_process_self();
93 XBT_DEBUG("<%d> New process in the game: %p", index_, SIMIX_process_self());
96 /** @brief Prepares the current process for termination. */
97 void Process::finalize()
99 state_ = SMPI_FINALIZED;
100 XBT_DEBUG("<%d> Process left the game", index_);
102 // This leads to an explosion of the search graph which cannot be reduced:
103 if(MC_is_active() || MC_record_replay_is_active())
105 // wait for all pending asynchronous comms to finish
106 MSG_barrier_wait(finalization_barrier_);
109 /** @brief Check if a process is finalized */
110 int Process::finalized()
112 if (index_ != MPI_UNDEFINED)
113 return (state_ == SMPI_FINALIZED);
118 /** @brief Check if a process is initialized */
119 int Process::initialized()
121 if (index_to_process_data == nullptr){
124 return ((index_ != MPI_UNDEFINED) && (state_ == SMPI_INITIALIZED));
128 /** @brief Mark a process as initialized (=MPI_Init called) */
129 void Process::mark_as_initialized()
131 if ((index_ != MPI_UNDEFINED) && (state_ != SMPI_FINALIZED))
132 state_ = SMPI_INITIALIZED;
135 void Process::set_replaying(bool value){
136 if ((index_ != MPI_UNDEFINED) && (state_ != SMPI_FINALIZED))
140 bool Process::replaying(){
141 if (index_ != MPI_UNDEFINED)
147 void Process::set_user_data(void *data)
152 void *Process::get_user_data()
157 smx_actor_t Process::process(){
162 * \brief Returns a structure that stores the location (filename + linenumber) of the last calls to MPI_* functions.
164 * \see smpi_trace_set_call_location
166 smpi_trace_call_location_t* Process::call_location()
168 return &trace_call_loc_;
176 MPI_Comm Process::comm_world()
178 return comm_world_==nullptr ? MPI_COMM_NULL : *comm_world_;
181 smx_mailbox_t Process::mailbox()
183 return mailbox_->getImpl();
186 smx_mailbox_t Process::mailbox_small()
188 return mailbox_small_->getImpl();
191 xbt_mutex_t Process::mailboxes_mutex()
193 return mailboxes_mutex_;
197 int Process::papi_event_set()
199 return papi_event_set_;
202 papi_counter_t& smpi_process_papi_counters()
204 return papi_counter_data_;
208 xbt_os_timer_t Process::timer()
213 void Process::simulated_start()
215 simulated_ = SIMIX_get_clock();
218 double Process::simulated_elapsed()
220 return SIMIX_get_clock() - simulated_;
223 MPI_Comm Process::comm_self()
225 if(comm_self_==MPI_COMM_NULL){
226 MPI_Group group = new Group(1);
227 comm_self_ = new Comm(group, nullptr);
228 group->set_mapping(index_, 0);
233 MPI_Comm Process::comm_intra()
238 void Process::set_comm_intra(MPI_Comm comm)
243 void Process::set_sampling(int s)
248 int Process::sampling()
253 msg_bar_t Process::finalization_barrier(){
254 return finalization_barrier_;
257 int Process::return_value(){
258 return return_value_;
261 void Process::set_return_value(int val){
265 void Process::init(int *argc, char ***argv){
267 if (process_data == nullptr){
268 printf("SimGrid was not initialized properly before entering MPI_Init. Aborting, please check compilation process and use smpirun\n");
271 if (argc != nullptr && argv != nullptr) {
272 smx_actor_t proc = SIMIX_process_self();
273 proc->context->set_cleanup(&MSG_process_cleanup_from_SIMIX);
275 int index = proc->pid - 1;
277 if(index_to_process_data == nullptr){
278 index_to_process_data=static_cast<int*>(xbt_malloc(SIMIX_process_count()*sizeof(int)));
281 char* instance_id = (*argv)[1];
283 int rank = std::stoi(std::string((*argv)[2]));
284 smpi_deployment_register_process(instance_id, rank, index);
285 } catch (std::invalid_argument& ia) {
286 throw std::invalid_argument(std::string("Invalid rank: ") + (*argv)[2]);
289 if(smpi_privatize_global_variables == SMPI_PRIVATIZE_MMAP){
290 /* Now using segment index of the process */
291 index = proc->segment_index;
292 /* Done at the process's creation */
293 SMPI_switch_data_segment(index);
296 Process* process = smpi_process_remote(index);
297 process->set_data(index, argc, argv);
299 xbt_assert(smpi_process(),
300 "smpi_process() returned nullptr. You probably gave a nullptr parameter to MPI_Init. "
301 "Although it's required by MPI-2, this is currently not supported by SMPI.");