1 /* Copyright (c) 2010-2020. 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. */
6 #include "include/xbt/config.hpp"
7 #include "simgrid/Exception.hpp"
8 #include "simgrid/s4u/Engine.hpp"
9 #include "simgrid/version.h"
10 #include "src/instr/instr_private.hpp"
11 #include "surf/surf.hpp"
12 #include "xbt/virtu.h" /* xbt::cmdline */
18 XBT_LOG_NEW_CATEGORY(instr, "Logging the behavior of the tracing system (used for Visualization/Analysis of simulations)");
19 XBT_LOG_NEW_DEFAULT_SUBCATEGORY (instr_config, instr, "Configuration");
21 std::ofstream tracing_file;
23 constexpr char OPT_TRACING_BASIC[] = "tracing/basic";
24 constexpr char OPT_TRACING_COMMENT_FILE[] = "tracing/comment-file";
25 constexpr char OPT_TRACING_DISABLE_DESTROY[] = "tracing/disable-destroy";
26 constexpr char OPT_TRACING_FORMAT_TI_ONEFILE[] = "tracing/smpi/format/ti-one-file";
27 constexpr char OPT_TRACING_SMPI[] = "tracing/smpi";
28 constexpr char OPT_TRACING_TOPOLOGY[] = "tracing/platform/topology";
30 static simgrid::config::Flag<bool> trace_enabled{
31 "tracing", "Enable the tracing system. You have to enable this option to use other tracing options.", false};
33 static simgrid::config::Flag<bool> trace_actor_enabled{
34 "tracing/msg/process", // FIXME rename this flag
35 "Trace the behavior of all categorized actors, grouping them by host. "
36 "Can be used to track actor location if the simulator does actor migration.",
39 static simgrid::config::Flag<bool> trace_vm_enabled{"tracing/vm", "Trace the behavior of all virtual machines.", false};
41 static simgrid::config::Flag<bool> trace_platform{"tracing/platform",
42 "Register the platform in the trace as a hierarchy.", false};
44 static simgrid::config::Flag<bool> trace_platform_topology{
45 OPT_TRACING_TOPOLOGY, "Register the platform topology in the trace as a graph.", true};
46 static simgrid::config::Flag<bool> trace_smpi_enabled{OPT_TRACING_SMPI, "Tracing of the SMPI interface.", false};
47 static simgrid::config::Flag<bool> trace_smpi_grouped{"tracing/smpi/group", "Group MPI processes by host.", false};
49 static simgrid::config::Flag<bool> trace_smpi_computing{
50 "tracing/smpi/computing", "Generate 'Computing' states to trace the out-of-SMPI parts of the application", false};
52 static simgrid::config::Flag<bool> trace_smpi_sleeping{
53 "tracing/smpi/sleeping", "Generate 'Sleeping' states for the sleeps in the application that do not pertain to SMPI",
56 static simgrid::config::Flag<bool> trace_view_internals{
57 "tracing/smpi/internals",
58 "Generate tracing events corresponding to point-to-point messages sent by SMPI collective communications", false};
60 static simgrid::config::Flag<bool> trace_categorized{
61 "tracing/categorized", "Trace categorized resource utilization of hosts and links.", false};
63 static simgrid::config::Flag<bool> trace_uncategorized{
64 "tracing/uncategorized",
65 "Trace uncategorized resource utilization of hosts and links. "
66 "To use if the simulator does not use tracing categories but resource utilization have to be traced.",
69 static simgrid::config::Flag<bool> trace_disable_destroy{
70 OPT_TRACING_DISABLE_DESTROY, {"tracing/disable_destroy"}, "Disable platform containers destruction.", false};
71 static simgrid::config::Flag<bool> trace_basic{OPT_TRACING_BASIC, "Avoid extended events (impoverished trace file).",
74 static simgrid::config::Flag<bool> trace_display_sizes{
75 "tracing/smpi/display-sizes",
76 "Add message size information (in bytes) to the to links and states (SMPI only). "
77 "For collectives, it usually corresponds to the total number of bytes sent by a process.",
80 static simgrid::config::Flag<bool> trace_disable_link{"tracing/disable_link",
81 "Do not trace link bandwidth and latency.", false};
82 static simgrid::config::Flag<bool> trace_disable_power{"tracing/disable_power", "Do not trace host power.", false};
84 simgrid::instr::TraceFormat simgrid::instr::trace_format = simgrid::instr::TraceFormat::Paje;
86 bool TRACE_needs_platform ()
88 return TRACE_actor_is_enabled() || TRACE_vm_is_enabled() || TRACE_categorized() || TRACE_uncategorized() ||
89 TRACE_platform() || (TRACE_smpi_is_enabled() && TRACE_smpi_is_grouped());
92 bool TRACE_is_enabled()
99 return trace_platform;
102 bool TRACE_platform_topology()
104 return trace_platform_topology;
107 bool TRACE_smpi_is_enabled()
109 return (trace_smpi_enabled || TRACE_smpi_is_grouped()) && TRACE_is_enabled();
112 bool TRACE_smpi_is_grouped()
114 return trace_smpi_grouped;
117 bool TRACE_smpi_is_computing()
119 return trace_smpi_computing;
122 bool TRACE_smpi_is_sleeping()
124 return trace_smpi_sleeping;
127 bool TRACE_smpi_view_internals()
129 return trace_view_internals;
132 bool TRACE_categorized ()
134 return trace_categorized;
137 bool TRACE_uncategorized ()
139 return trace_uncategorized;
142 bool TRACE_actor_is_enabled()
144 return trace_actor_enabled && trace_enabled;
147 bool TRACE_vm_is_enabled()
149 return trace_vm_enabled && trace_enabled;
152 bool TRACE_disable_link()
154 return trace_disable_link && trace_enabled;
157 bool TRACE_disable_speed()
159 return trace_disable_power && trace_enabled;
162 bool TRACE_disable_destroy ()
164 return trace_disable_destroy && trace_enabled;
169 return trace_basic && trace_enabled;
172 bool TRACE_display_sizes ()
174 return trace_display_sizes && trace_smpi_enabled && trace_enabled;
177 int TRACE_precision ()
179 return simgrid::config::get_value<int>("tracing/precision");
182 std::string TRACE_get_filename()
184 return simgrid::config::get_value<std::string>("tracing/filename");
187 static void print_line(const char* option, const char* desc, const char* longdesc)
189 std::string str = std::string("--cfg=") + option + " ";
191 int len = str.size();
192 XBT_HELP("%s%*.*s %s", str.c_str(), 30 - len, 30 - len, "", desc);
193 if (longdesc != nullptr) {
194 XBT_HELP("%s\n", longdesc);
200 XBT_HELP("Description of the tracing options accepted by this simulator:\n");
201 print_line(OPT_TRACING_SMPI, "Trace the MPI Interface (SMPI)",
202 " This option only has effect if this simulator is SMPI-based. Traces the MPI\n"
203 " interface and generates a trace that can be analyzed using Gantt-like\n"
204 " visualizations. Every MPI function (implemented by SMPI) is transformed in a\n"
205 " state, and point-to-point communications can be analyzed with arrows.");
206 print_line(OPT_TRACING_DISABLE_DESTROY, "Disable platform containers destruction",
207 " Disable the destruction of containers at the end of simulation. This can be\n"
208 " used with simulators that have a different notion of time (different from\n"
209 " the simulated time).");
210 print_line(OPT_TRACING_BASIC, "Avoid extended events (impoverished trace file).",
211 " Some visualization tools are not able to parse correctly the Paje file format.\n"
212 " Use this option if you are using one of these tools to visualize the simulation\n"
213 " trace. Keep in mind that the trace might be incomplete, without all the\n"
214 " information that would be registered otherwise.");
215 print_line(OPT_TRACING_FORMAT_TI_ONEFILE, "Only works for SMPI now, and TI output format",
216 " By default, each process outputs to a separate file, inside a filename_files folder\n"
217 " By setting this option to yes, all processes will output to only one file\n"
218 " This is meant to avoid opening thousands of files with large simulations");
219 print_line(OPT_TRACING_TOPOLOGY, "Register the platform topology as a graph",
220 " This option (enabled by default) can be used to disable the tracing of\n"
221 " the platform topology in the trace file. Sometimes, such task is really\n"
222 " time consuming, since it must get the route from each host to other hosts\n"
223 " within the same Autonomous System (AS).");
229 static bool trace_active = false;
231 static void on_simulation_start()
236 // tracing system must be:
237 // - enabled (with --cfg=tracing:yes)
238 // - already configured (simgrid::instr::init already called)
239 if (TRACE_is_enabled()) {
242 XBT_DEBUG("Tracing starts");
244 /* init the tracing module to generate the right output */
245 std::string format = config::get_value<std::string>("tracing/smpi/format");
246 XBT_DEBUG("Tracing format %s", format.c_str());
248 /* open the trace file(s) */
249 std::string filename = TRACE_get_filename();
250 tracing_file.open(filename.c_str(), std::ofstream::out);
251 if (tracing_file.fail()) {
252 throw TracingError(XBT_THROW_POINT,
253 xbt::string_printf("Tracefile %s could not be opened for writing.", filename.c_str()));
256 XBT_DEBUG("Filename %s is open for writing", filename.c_str());
258 if (format == "Paje") {
259 /* output generator version */
260 tracing_file << "#This file was generated using SimGrid-" << SIMGRID_VERSION_MAJOR << "." << SIMGRID_VERSION_MINOR
261 << "." << SIMGRID_VERSION_PATCH << std::endl;
262 tracing_file << "#[";
263 for (auto str : simgrid::xbt::cmdline) {
264 tracing_file << str << " ";
266 tracing_file << "]" << std::endl;
269 /* output one line comment */
270 std::string comment = simgrid::config::get_value<std::string>("tracing/comment");
271 if (not comment.empty())
272 tracing_file << "# " << comment << std::endl;
274 /* output comment file */
275 dump_comment_file(simgrid::config::get_value<std::string>(OPT_TRACING_COMMENT_FILE));
277 if (format == "Paje") {
278 /* output Pajé header */
279 TRACE_header(TRACE_basic(), TRACE_display_sizes());
281 trace_format = TraceFormat::Ti;
284 XBT_DEBUG("Tracing is on");
288 static void on_simulation_end()
290 if (not trace_active)
293 /* dump trace buffer */
294 TRACE_last_timestamp_to_dump = surf_get_clock();
295 TRACE_paje_dump_buffer(true);
297 const Type* root_type = Container::get_root()->type_;
298 /* destroy all data structures of tracing (and free) */
299 delete Container::get_root();
302 /* close the trace files */
303 tracing_file.close();
304 XBT_DEBUG("Filename %s is closed", TRACE_get_filename().c_str());
306 /* de-activate trace */
307 trace_active = false;
308 XBT_DEBUG("Tracing is off");
309 XBT_DEBUG("Tracing system is shutdown");
314 static bool is_initialized = false;
318 is_initialized = true;
320 /* name of the tracefile */
321 config::declare_flag<std::string>("tracing/filename", "Trace file created by the instrumented SimGrid.",
323 config::declare_flag<std::string>("tracing/smpi/format",
324 "Select trace output format used by SMPI. The default is the 'Paje' format. "
325 "The 'TI' (Time-Independent) format allows for trace replay.",
328 config::declare_flag<bool>(OPT_TRACING_FORMAT_TI_ONEFILE,
329 "(smpi only) For replay format only : output to one file only", false);
330 config::alias(OPT_TRACING_FORMAT_TI_ONEFILE, {"tracing/smpi/format/ti_one_file"});
331 config::declare_flag<std::string>("tracing/comment", "Add a comment line to the top of the trace file.", "");
332 config::declare_flag<std::string>(OPT_TRACING_COMMENT_FILE,
333 "Add the contents of a file as comments to the top of the trace.", "");
334 config::alias(OPT_TRACING_COMMENT_FILE, {"tracing/comment_file"});
335 config::declare_flag<int>("tracing/precision",
336 "Numerical precision used when timestamping events "
337 "(expressed in number of digits after decimal point)",
340 /* Connect callbacks */
341 s4u::Engine::on_platform_creation.connect(on_simulation_start);
342 s4u::Engine::on_deadlock.connect(on_simulation_end);
343 s4u::Engine::on_simulation_end.connect(on_simulation_end);
346 } // namespace simgrid