-/* Copyright (c) 2010-2018. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2010-2023. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
-#include "include/xbt/config.hpp"
-#include "simgrid/s4u/Engine.hpp"
+#include <simgrid/Exception.hpp>
+#include <simgrid/s4u/Engine.hpp>
+
#include "src/instr/instr_private.hpp"
-#include "surf/surf.hpp"
-#include "xbt/virtu.h" /* sg_cmdline */
+#include "xbt/config.hpp"
+#include "xbt/xbt_os_time.h"
+
+#include <sys/stat.h>
+
#include <fstream>
#include <string>
#include <vector>
XBT_LOG_NEW_DEFAULT_SUBCATEGORY (instr_config, instr, "Configuration");
std::ofstream tracing_file;
+static std::map<const simgrid::instr::Container*, std::ofstream*> tracing_files; // TI specific
-#define OPT_TRACING_BASIC "tracing/basic"
-#define OPT_TRACING_CATEGORIZED "tracing/categorized"
-#define OPT_TRACING_COMMENT_FILE "tracing/comment-file"
-#define OPT_TRACING_COMMENT "tracing/comment"
-#define OPT_TRACING_DISABLE_DESTROY "tracing/disable-destroy"
-#define OPT_TRACING_FORMAT_TI_ONEFILE "tracing/smpi/format/ti-one-file"
-#define OPT_TRACING_PLATFORM "tracing/platform"
-#define OPT_TRACING_SMPI_COMPUTING "tracing/smpi/computing"
-#define OPT_TRACING_SMPI_GROUP "tracing/smpi/group"
-#define OPT_TRACING_SMPI_INTERNALS "tracing/smpi/internals"
-#define OPT_TRACING_SMPI_SLEEPING "tracing/smpi/sleeping"
-#define OPT_TRACING_SMPI "tracing/smpi"
-#define OPT_TRACING_TOPOLOGY "tracing/platform/topology"
-#define OPT_TRACING_UNCATEGORIZED "tracing/uncategorized"
+constexpr char OPT_TRACING_BASIC[] = "tracing/basic";
+constexpr char OPT_TRACING_COMMENT_FILE[] = "tracing/comment-file";
+constexpr char OPT_TRACING_DISABLE_DESTROY[] = "tracing/disable-destroy";
+constexpr char OPT_TRACING_FORMAT_TI_ONEFILE[] = "tracing/smpi/format/ti-one-file";
+constexpr char OPT_TRACING_SMPI[] = "tracing/smpi";
+constexpr char OPT_TRACING_TOPOLOGY[] = "tracing/platform/topology";
static simgrid::config::Flag<bool> trace_enabled{
"tracing", "Enable the tracing system. You have to enable this option to use other tracing options.", false};
static simgrid::config::Flag<bool> trace_actor_enabled{
- "tracing/msg/process", // FIXME rename this flag
+ "tracing/actor",
"Trace the behavior of all categorized actors, grouping them by host. "
"Can be used to track actor location if the simulator does actor migration.",
false};
static simgrid::config::Flag<bool> trace_vm_enabled{"tracing/vm", "Trace the behavior of all virtual machines.", false};
-static simgrid::config::Flag<bool> trace_platform{OPT_TRACING_PLATFORM,
+static simgrid::config::Flag<bool> trace_platform{"tracing/platform",
"Register the platform in the trace as a hierarchy.", false};
+
static simgrid::config::Flag<bool> trace_platform_topology{
OPT_TRACING_TOPOLOGY, "Register the platform topology in the trace as a graph.", true};
static simgrid::config::Flag<bool> trace_smpi_enabled{OPT_TRACING_SMPI, "Tracing of the SMPI interface.", false};
-static simgrid::config::Flag<bool> trace_smpi_grouped{OPT_TRACING_SMPI_GROUP, "Group MPI processes by host.", false};
+static simgrid::config::Flag<bool> trace_smpi_grouped{"tracing/smpi/group", "Group MPI processes by host.", false};
+
static simgrid::config::Flag<bool> trace_smpi_computing{
- OPT_TRACING_SMPI_COMPUTING, "Generate states for timing out of SMPI parts of the application", false};
+ "tracing/smpi/computing", "Generate 'Computing' states to trace the out-of-SMPI parts of the application", false};
+
static simgrid::config::Flag<bool> trace_smpi_sleeping{
- OPT_TRACING_SMPI_SLEEPING, "Generate states for timing out of SMPI parts of the application", false};
+ "tracing/smpi/sleeping", "Generate 'Sleeping' states for the sleeps in the application that do not pertain to SMPI",
+ false};
+
static simgrid::config::Flag<bool> trace_view_internals{
- OPT_TRACING_SMPI_INTERNALS, "View internal messages sent by Collective communications in SMPI", false};
+ "tracing/smpi/internals",
+ "Generate tracing events corresponding to point-to-point messages sent by SMPI collective communications", false};
+
static simgrid::config::Flag<bool> trace_categorized{
- OPT_TRACING_CATEGORIZED, "Tracing categorized resource utilization of hosts and links.", false};
+ "tracing/categorized", "Trace categorized resource utilization of hosts and links.", false};
+
static simgrid::config::Flag<bool> trace_uncategorized{
- OPT_TRACING_UNCATEGORIZED, "Tracing uncategorized resource utilization of hosts and links.", false};
-static simgrid::config::Flag<bool> trace_disable_destroy{
- OPT_TRACING_DISABLE_DESTROY, {"tracing/disable_destroy"}, "Disable platform containers destruction.", false};
+ "tracing/uncategorized",
+ "Trace uncategorized resource utilization of hosts and links. "
+ "To use if the simulator does not use tracing categories but resource utilization have to be traced.",
+ false};
+
+static simgrid::config::Flag<bool> trace_disable_destroy{OPT_TRACING_DISABLE_DESTROY,
+ "Disable platform containers destruction.", false};
static simgrid::config::Flag<bool> trace_basic{OPT_TRACING_BASIC, "Avoid extended events (impoverished trace file).",
false};
"Do not trace link bandwidth and latency.", false};
static simgrid::config::Flag<bool> trace_disable_power{"tracing/disable_power", "Do not trace host power.", false};
-static bool trace_active = false;
-
-simgrid::instr::TraceFormat simgrid::instr::trace_format = simgrid::instr::TraceFormat::Paje;
-
-static void TRACE_start()
-{
- if (trace_active)
- return;
-
- // tracing system must be:
- // - enabled (with --cfg=tracing:yes)
- // - already configured (TRACE_global_init already called)
- if (TRACE_is_enabled()) {
- instr_define_callbacks();
-
- XBT_DEBUG("Tracing starts");
- /* init the tracing module to generate the right output */
- std::string format = simgrid::config::get_value<std::string>("tracing/smpi/format");
- XBT_DEBUG("Tracing format %s", format.c_str());
-
- /* open the trace file(s) */
- std::string filename = TRACE_get_filename();
- tracing_file.open(filename.c_str(), std::ofstream::out);
- if (tracing_file.fail()) {
- THROWF(system_error, 1, "Tracefile %s could not be opened for writing.", filename.c_str());
- }
-
- XBT_DEBUG("Filename %s is open for writing", filename.c_str());
-
- if (format == "Paje") {
- /* output generator version */
- tracing_file << "#This file was generated using SimGrid-" << SIMGRID_VERSION_MAJOR << "." << SIMGRID_VERSION_MINOR
- << "." << SIMGRID_VERSION_PATCH << std::endl;
- tracing_file << "#[";
- unsigned int cpt;
- char* str;
- xbt_dynar_foreach (xbt_cmdline, cpt, str) {
- tracing_file << str << " ";
- }
- tracing_file << "]" << std::endl;
- }
-
- /* output one line comment */
- dump_comment(simgrid::config::get_value<std::string>(OPT_TRACING_COMMENT));
-
- /* output comment file */
- dump_comment_file(simgrid::config::get_value<std::string>(OPT_TRACING_COMMENT_FILE));
-
- if (format == "Paje") {
- /* output Pajé header */
- TRACE_header(TRACE_basic(), TRACE_display_sizes());
- } else
- simgrid::instr::trace_format = simgrid::instr::TraceFormat::Ti;
-
- trace_active = true;
- XBT_DEBUG("Tracing is on");
- }
-}
-
-static void TRACE_end()
-{
- if (not trace_active)
- return;
-
- /* dump trace buffer */
- TRACE_last_timestamp_to_dump = surf_get_clock();
- TRACE_paje_dump_buffer(true);
-
- simgrid::instr::Type* root_type = simgrid::instr::Container::get_root()->type_;
- /* destroy all data structures of tracing (and free) */
- delete simgrid::instr::Container::get_root();
- delete root_type;
-
- /* close the trace files */
- tracing_file.close();
- XBT_DEBUG("Filename %s is closed", TRACE_get_filename().c_str());
-
- /* de-activate trace */
- trace_active = false;
- XBT_DEBUG("Tracing is off");
- XBT_DEBUG("Tracing system is shutdown");
-}
-
bool TRACE_needs_platform ()
{
return TRACE_actor_is_enabled() || TRACE_vm_is_enabled() || TRACE_categorized() || TRACE_uncategorized() ||
return trace_disable_power && trace_enabled;
}
-bool TRACE_disable_destroy ()
-{
- return trace_disable_destroy && trace_enabled;
-}
-
-bool TRACE_basic ()
-{
- return trace_basic && trace_enabled;
-}
-
bool TRACE_display_sizes ()
{
return trace_display_sizes && trace_smpi_enabled && trace_enabled;
}
-int TRACE_precision ()
-{
- return simgrid::config::get_value<int>("tracing/precision");
-}
-
-std::string TRACE_get_filename()
-{
- return simgrid::config::get_value<std::string>("tracing/filename");
-}
-
-void TRACE_global_init()
-{
- static bool is_initialised = false;
- if (is_initialised)
- return;
-
- is_initialised = true;
-
- /* name of the tracefile */
- simgrid::config::declare_flag<std::string>("tracing/filename", "Trace file created by the instrumented SimGrid.",
- "simgrid.trace");
- simgrid::config::declare_flag<std::string>(
- "tracing/smpi/format", "Select trace output format used by SMPI. The default is the 'Paje' format. "
- "The 'TI' (Time-Independent) format allows for trace replay.",
- "Paje");
-
- simgrid::config::declare_flag<bool>(OPT_TRACING_FORMAT_TI_ONEFILE,
- "(smpi only) For replay format only : output to one file only", false);
- simgrid::config::alias(OPT_TRACING_FORMAT_TI_ONEFILE, {"tracing/smpi/format/ti_one_file"});
- simgrid::config::declare_flag<std::string>(OPT_TRACING_COMMENT, "Comment to be added on the top of the trace file.",
- "");
- simgrid::config::declare_flag<std::string>(
- OPT_TRACING_COMMENT_FILE, "The contents of the file are added to the top of the trace file as comment.", "");
- simgrid::config::alias(OPT_TRACING_COMMENT_FILE, {"tracing/comment_file"});
- simgrid::config::declare_flag<int>("tracing/precision", "Numerical precision used when timestamping events "
- "(expressed in number of digits after decimal point)",
- 6);
-
- /* Connect callbacks */
- simgrid::s4u::on_platform_creation.connect(TRACE_start);
- simgrid::s4u::on_deadlock.connect(TRACE_end);
- simgrid::s4u::on_simulation_end.connect(TRACE_end);
-}
-
static void print_line(const char* option, const char* desc, const char* longdesc)
{
std::string str = std::string("--cfg=") + option + " ";
- int len = str.size();
- printf("%s%*.*s %s\n", str.c_str(), 30 - len, 30 - len, "", desc);
+ int len = static_cast<int>(str.size());
+ XBT_HELP("%s%*.*s %s", str.c_str(), 30 - len, 30 - len, "", desc);
if (longdesc != nullptr) {
- printf ("%s\n\n", longdesc);
+ XBT_HELP("%s\n", longdesc);
}
}
void TRACE_help()
{
- printf("Description of the tracing options accepted by this simulator:\n\n");
- print_line(OPT_TRACING_CATEGORIZED, "Trace categorized resource utilization",
- " It activates the categorized resource utilization tracing. It should\n"
- " be enabled if tracing categories are used by this simulator.");
- print_line(OPT_TRACING_UNCATEGORIZED, "Trace uncategorized resource utilization",
- " It activates the uncategorized resource utilization tracing. Use it if\n"
- " this simulator do not use tracing categories and resource use have to be\n"
- " traced.");
+ XBT_HELP("Description of the tracing options accepted by this simulator:\n");
print_line(OPT_TRACING_SMPI, "Trace the MPI Interface (SMPI)",
" This option only has effect if this simulator is SMPI-based. Traces the MPI\n"
" interface and generates a trace that can be analyzed using Gantt-like\n"
" visualizations. Every MPI function (implemented by SMPI) is transformed in a\n"
" state, and point-to-point communications can be analyzed with arrows.");
- print_line(OPT_TRACING_SMPI_GROUP, "Group MPI processes by host (SMPI)",
- " This option only has effect if this simulator is SMPI-based. The processes\n"
- " are grouped by the hosts where they were executed.");
- print_line(OPT_TRACING_SMPI_COMPUTING, "Generates a \" Computing \" State",
- " This option aims at tracing computations in the application, outside SMPI\n"
- " to allow further study of simulated or real computation time");
- print_line(OPT_TRACING_SMPI_SLEEPING, "Generates a \" Sleeping \" State",
- " This option aims at tracing sleeps in the application, outside SMPI\n"
- " to allow further study of simulated or real sleep time");
- print_line(OPT_TRACING_SMPI_INTERNALS, "Generates tracing events corresponding",
- " to point-to-point messages sent by collective communications");
print_line(OPT_TRACING_DISABLE_DESTROY, "Disable platform containers destruction",
" Disable the destruction of containers at the end of simulation. This can be\n"
" used with simulators that have a different notion of time (different from\n"
" By default, each process outputs to a separate file, inside a filename_files folder\n"
" By setting this option to yes, all processes will output to only one file\n"
" This is meant to avoid opening thousands of files with large simulations");
- print_line(OPT_TRACING_COMMENT, "Comment to be added on the top of the trace file.",
- " Use this to add a comment line to the top of the trace file.");
- print_line(OPT_TRACING_COMMENT_FILE, "File contents added to trace file as comment.",
- " Use this to add the contents of a file to the top of the trace file as comment.");
print_line(OPT_TRACING_TOPOLOGY, "Register the platform topology as a graph",
" This option (enabled by default) can be used to disable the tracing of\n"
" the platform topology in the trace file. Sometimes, such task is really\n"
" time consuming, since it must get the route from each host to other hosts\n"
" within the same Autonomous System (AS).");
}
+
+namespace simgrid::instr {
+static bool trace_active = false;
+TraceFormat trace_format = TraceFormat::Paje;
+static int trace_precision;
+
+/*************
+ * Callbacks *
+ *************/
+xbt::signal<void(Container const&)> Container::on_creation;
+xbt::signal<void(Container const&)> Container::on_destruction;
+xbt::signal<void(Type const&, PajeEventType)> Type::on_creation;
+xbt::signal<void(LinkType const&, Type const&, Type const&)> LinkType::on_creation;
+xbt::signal<void(PajeEvent&)> PajeEvent::on_creation;
+xbt::signal<void(PajeEvent const&)> PajeEvent::on_destruction;
+xbt::signal<void(StateEvent const&)> StateEvent::on_destruction;
+xbt::signal<void(EntityValue const&)> EntityValue::on_creation;
+
+static void on_container_creation_paje(const Container& c)
+{
+ double timestamp = simgrid_get_clock();
+ std::stringstream stream;
+
+ XBT_DEBUG("%s: event_type=%u, timestamp=%f", __func__, static_cast<unsigned>(PajeEventType::CreateContainer),
+ timestamp);
+
+ stream << std::fixed << std::setprecision(trace_precision) << PajeEventType::CreateContainer << " ";
+ stream << timestamp << " " << c.get_id() << " " << c.get_type()->get_id() << " " << c.get_parent()->get_id() << " \"";
+ if (c.get_name().find("rank-") != 0)
+ stream << c.get_name() << "\"";
+ else
+ /* Subtract -1 because this is the process id and we transform it to the rank id */
+ stream << "rank-" << stoi(c.get_name().substr(5)) - 1 << "\"";
+
+ XBT_DEBUG("Dump %s", stream.str().c_str());
+ tracing_file << stream.str() << '\n';
+}
+
+static void on_container_destruction_paje(const Container& c)
+{
+ // trace my destruction, but not if user requests so or if the container is root
+ if (not trace_disable_destroy && &c != Container::get_root()) {
+ std::stringstream stream;
+ double timestamp = simgrid_get_clock();
+
+ XBT_DEBUG("%s: event_type=%u, timestamp=%f", __func__, static_cast<unsigned>(PajeEventType::DestroyContainer),
+ timestamp);
+
+ stream << std::fixed << std::setprecision(trace_precision) << PajeEventType::DestroyContainer << " ";
+ stream << timestamp << " " << c.get_type()->get_id() << " " << c.get_id();
+ XBT_DEBUG("Dump %s", stream.str().c_str());
+ tracing_file << stream.str() << '\n';
+ }
+}
+
+static void on_container_creation_ti(const Container& c)
+{
+ XBT_DEBUG("%s: event_type=%u, timestamp=%f", __func__, static_cast<unsigned>(PajeEventType::CreateContainer),
+ simgrid_get_clock());
+ // if we are in the mode with only one file
+ static std::ofstream* ti_unique_file = nullptr;
+ static double prefix = 0.0;
+
+ if (tracing_files.empty()) {
+ // generate unique run id with time
+ prefix = xbt_os_time();
+ }
+
+ if (not simgrid::config::get_value<bool>("tracing/smpi/format/ti-one-file") || ti_unique_file == nullptr) {
+ std::string folder_name = simgrid::config::get_value<std::string>("tracing/filename") + "_files";
+ std::string filename = folder_name + "/" + std::to_string(prefix) + "_" + c.get_name() + ".txt";
+ mkdir(folder_name.c_str(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
+ ti_unique_file = new std::ofstream(filename.c_str(), std::ofstream::out);
+ xbt_assert(not ti_unique_file->fail(), "Tracefile %s could not be opened for writing", filename.c_str());
+ tracing_file << filename << '\n';
+ }
+ tracing_files.insert({&c, ti_unique_file});
+}
+
+static void on_container_destruction_ti(const Container& c)
+{
+ if (not trace_disable_destroy && &c != Container::get_root()) {
+ if (not simgrid::config::get_value<bool>("tracing/smpi/format/ti-one-file") || tracing_files.size() == 1) {
+ tracing_files.at(&c)->close();
+ delete tracing_files.at(&c);
+ }
+ tracing_files.erase(&c);
+ }
+}
+
+static void on_entity_value_creation(const EntityValue& value)
+{
+ std::stringstream stream;
+ XBT_DEBUG("%s: event_type=%u", __func__, static_cast<unsigned>(PajeEventType::DefineEntityValue));
+ stream << std::fixed << std::setprecision(trace_precision) << PajeEventType::DefineEntityValue;
+ stream << " " << value.get_id() << " " << value.get_parent()->get_id() << " " << value.get_name();
+ if (not value.get_color().empty())
+ stream << " \"" << value.get_color() << "\"";
+ XBT_DEBUG("Dump %s", stream.str().c_str());
+ tracing_file << stream.str() << '\n';
+}
+
+static void on_event_creation(PajeEvent& event)
+{
+ XBT_DEBUG("%s: event_type=%u, timestamp=%.*f", __func__, static_cast<unsigned>(event.eventType_), trace_precision,
+ event.timestamp_);
+ event.stream_ << std::fixed << std::setprecision(trace_precision);
+ event.stream_ << event.eventType_ << " " << event.timestamp_ << " ";
+ event.stream_ << event.get_type()->get_id() << " " << event.get_container()->get_id();
+}
+
+static void on_event_destruction(const PajeEvent& event)
+{
+ XBT_DEBUG("Dump %s", event.stream_.str().c_str());
+ tracing_file << event.stream_.str() << '\n';
+}
+
+static void on_state_event_destruction(const StateEvent& event)
+{
+ if (event.has_extra())
+ *tracing_files.at(event.get_container()) << event.stream_.str() << '\n';
+}
+
+static void on_type_creation(const Type& type, PajeEventType event_type)
+{
+ if (event_type == PajeEventType::DefineLinkType)
+ return; // this kind of type has to be handled differently
+
+ std::stringstream stream;
+ stream << std::fixed << std::setprecision(trace_precision);
+ XBT_DEBUG("%s: event_type=%u, timestamp=%.*f", __func__, static_cast<unsigned>(event_type), trace_precision, 0.);
+ stream << event_type << " " << type.get_id() << " " << type.get_parent()->get_id() << " " << type.get_name();
+ if (type.is_colored())
+ stream << " \"" << type.get_color() << "\"";
+ XBT_DEBUG("Dump %s", stream.str().c_str());
+ tracing_file << stream.str() << '\n';
+}
+
+static void on_link_type_creation(const Type& type, const Type& source, const Type& dest)
+{
+ std::stringstream stream;
+ XBT_DEBUG("%s: event_type=%u, timestamp=%.*f", __func__, static_cast<unsigned>(PajeEventType::DefineLinkType),
+ trace_precision, 0.);
+ stream << PajeEventType::DefineLinkType << " " << type.get_id() << " " << type.get_parent()->get_id();
+ stream << " " << source.get_id() << " " << dest.get_id() << " " << type.get_name();
+ XBT_DEBUG("Dump %s", stream.str().c_str());
+ tracing_file << stream.str() << '\n';
+}
+
+static void on_simulation_start()
+{
+ if (trace_active || not TRACE_is_enabled())
+ return;
+
+ define_callbacks();
+
+ XBT_DEBUG("Tracing starts");
+ trace_precision = config::get_value<int>("tracing/precision");
+
+ /* init the tracing module to generate the right output */
+ std::string format = config::get_value<std::string>("tracing/smpi/format");
+ XBT_DEBUG("Tracing format %s", format.c_str());
+
+ /* open the trace file(s) */
+ std::string filename = simgrid::config::get_value<std::string>("tracing/filename");
+ tracing_file.open(filename.c_str(), std::ofstream::out);
+ if (tracing_file.fail()) {
+ throw TracingError(XBT_THROW_POINT,
+ xbt::string_printf("Tracefile %s could not be opened for writing.", filename.c_str()));
+ }
+
+ XBT_DEBUG("Filename %s is open for writing", filename.c_str());
+
+ if (format == "Paje") {
+ Container::on_creation_cb(on_container_creation_paje);
+ Container::on_destruction_cb(on_container_destruction_paje);
+ EntityValue::on_creation_cb(on_entity_value_creation);
+ Type::on_creation_cb(on_type_creation);
+ LinkType::on_creation_cb(on_link_type_creation);
+ PajeEvent::on_creation_cb(on_event_creation);
+ PajeEvent::on_destruction_cb(on_event_destruction);
+
+ paje::dump_generator_version();
+
+ /* output one line comment */
+ if (auto comment = simgrid::config::get_value<std::string>("tracing/comment"); not comment.empty())
+ tracing_file << "# " << comment << '\n';
+
+ /* output comment file */
+ paje::dump_comment_file(config::get_value<std::string>(OPT_TRACING_COMMENT_FILE));
+ paje::dump_header(trace_basic, TRACE_display_sizes());
+ } else {
+ trace_format = TraceFormat::Ti;
+ Container::on_creation_cb(on_container_creation_ti);
+ Container::on_destruction_cb(on_container_destruction_ti);
+ StateEvent::on_destruction_cb(on_state_event_destruction);
+ }
+
+ trace_active = true;
+ XBT_DEBUG("Tracing is on");
+}
+
+static void on_simulation_end()
+{
+ if (not trace_active)
+ return;
+
+ /* dump trace buffer */
+ last_timestamp_to_dump = simgrid_get_clock();
+ dump_buffer(true);
+
+ const Type* root_type = Container::get_root()->get_type();
+ /* destroy all data structures of tracing (and free) */
+ delete Container::get_root();
+ delete root_type;
+
+ /* close the trace files */
+ tracing_file.close();
+ XBT_DEBUG("Filename %s is closed", config::get_value<std::string>("tracing/filename").c_str());
+
+ /* de-activate trace */
+ trace_active = false;
+ XBT_DEBUG("Tracing is off");
+ XBT_DEBUG("Tracing system is shutdown");
+}
+
+void init()
+{
+ static bool is_initialized = false;
+ if (is_initialized)
+ return;
+
+ is_initialized = true;
+
+ /* name of the tracefile */
+ config::declare_flag<std::string>("tracing/filename", "Trace file created by the instrumented SimGrid.",
+ "simgrid.trace");
+ config::declare_flag<std::string>("tracing/smpi/format",
+ "Select trace output format used by SMPI. The default is the 'Paje' format. "
+ "The 'TI' (Time-Independent) format allows for trace replay.",
+ "Paje");
+
+ config::declare_flag<bool>(OPT_TRACING_FORMAT_TI_ONEFILE,
+ "(smpi only) For replay format only : output to one file only", false);
+ config::declare_flag<std::string>("tracing/comment", "Add a comment line to the top of the trace file.", "");
+ config::declare_flag<std::string>(OPT_TRACING_COMMENT_FILE,
+ "Add the contents of a file as comments to the top of the trace.", "");
+ config::declare_flag<int>("tracing/precision",
+ "Numerical precision used when timestamping events "
+ "(expressed in number of digits after decimal point)",
+ 6);
+
+ /* Connect Engine callbacks */
+ s4u::Engine::on_platform_creation_cb(on_simulation_start);
+ s4u::Engine::on_time_advance_cb([](double /*time_delta*/) { dump_buffer(false); });
+ s4u::Engine::on_deadlock_cb(on_simulation_end);
+ s4u::Engine::on_simulation_end_cb(on_simulation_end);
+}
+} // namespace simgrid::instr
