#include <stdexcept>
#include <msg/msg.h>
#include <xbt/log.h>
+
+// Creates log categories
+XBT_LOG_NEW_CATEGORY(simu, "Root of simulation messages");
+XBT_LOG_NEW_SUBCATEGORY(main, simu, "Messages from global infrastructure");
+XBT_LOG_NEW_SUBCATEGORY(depl, main, "Messages from auto deployment");
+XBT_LOG_NEW_SUBCATEGORY(comm, simu, "Messages from asynchronous pipes");
+XBT_LOG_NEW_SUBCATEGORY(proc, simu, "Messages from base process class");
+XBT_LOG_NEW_SUBCATEGORY(loba, simu, "Messages from load-balancer");
+
+XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(main);
+
#include "deployment.h"
#include "hostdata.h"
#include "misc.h"
#include "options.h"
#include "process.h"
+#include "statistics.h"
#include "timer.h"
+#include "tracing.h"
#include "version.h"
-// Creates log categories
-XBT_LOG_NEW_CATEGORY(simu, "Simulation messages");
-XBT_LOG_NEW_SUBCATEGORY(main, simu, "Messages from global infrastructure");
-XBT_LOG_NEW_SUBCATEGORY(comm, simu, "Messages from asynchronous pipes");
-XBT_LOG_NEW_SUBCATEGORY(proc, simu, "Messages from base process class");
-XBT_LOG_NEW_SUBCATEGORY(loba, simu, "Messages from load-balancer");
+namespace {
+ // Failure exit status
+ enum {
+ EXIT_NO_FAILURE = 0x00, // no error
+ EXIT_FAILURE_ARGS = 0x01, // bad arguments
+ EXIT_FAILURE_INIT = 0x02, // failed to initialize simulator
+ EXIT_FAILURE_SIMU = 0x04, // simulation failed
+ EXIT_FAILURE_CLEAN = 0x08, // error at cleanup
+ };
-XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(main);
+ xbt_mutex_t proc_mutex;
+ xbt_cond_t proc_cond;
+ unsigned proc_counter;
+
+ struct statistics comps;
+ struct statistics loads;
+
+}
-// Failure exit status
-enum {
- EXIT_NO_FAILURE = 0x00, // no error
- EXIT_FAILURE_ARGS = 0x01, // bad arguments
- EXIT_FAILURE_INIT = 0x02, // failed to initialize simulator
- EXIT_FAILURE_SIMU = 0x04, // simulation failed
- EXIT_FAILURE_CLEAN = 0x08, // error at cleanup
-};
-
-#include "loba_least_loaded.h"
-int simulation_main(int argc, char* argv[])
+static int simulation_main(int argc, char* argv[])
{
int result;
process* proc;
try {
- proc = new loba_least_loaded(argc, argv);
+ proc = opt::loba_algorithms.new_instance(opt::loba_algo, argc, argv);
+
+ xbt_mutex_acquire(proc_mutex);
+ ++proc_counter;
+ xbt_mutex_release(proc_mutex);
+
result = proc->run();
+
+ xbt_mutex_acquire(proc_mutex);
+ comps.push(proc->get_comp());
+ loads.push(proc->get_real_load());
+
+ // Synchronization barrier...
+ // The goal is to circumvent a limitation in SimGrid (at least
+ // in version 3.5): a process must be alive when another one
+ // destroys a communication they had together.
+
+ --proc_counter;
+ xbt_cond_broadcast(proc_cond);
+ while (proc_counter > 0)
+ xbt_cond_wait(proc_cond, proc_mutex);
+ xbt_mutex_release(proc_mutex);
+
delete proc;
}
catch (std::invalid_argument& e) {
return result;
}
+static void check_for_lost_load()
+{
+ double total_init = process::get_total_load_init();
+
+ double total_exit = process::get_total_load_exit();
+ double lost = total_init - total_exit;
+ double lost_ratio = 100.0 * lost / total_init;
+ if (lost_ratio < -opt::load_ratio_threshold)
+ CRITICAL2("Gained load at exit! %g (%g%%) <============",
+ -lost, -lost_ratio);
+ else if (lost_ratio > opt::load_ratio_threshold)
+ CRITICAL2("Lost load at exit! %g (%g%%) <============",
+ lost, lost_ratio);
+ else
+ VERB2("Total load at exit looks good: %g (%g%%)", lost, lost_ratio);
+
+ double total_running = process::get_total_load_running();
+ double running_ratio = 100.0 * total_running / total_init;
+ if (running_ratio < -opt::load_ratio_threshold)
+ CRITICAL2("Negative running load at exit! %g (%g%%) <============",
+ total_running, running_ratio);
+ else if (running_ratio > opt::load_ratio_threshold)
+ CRITICAL2("Remaining running load at exit! %g (%g%%) <============",
+ total_running, running_ratio);
+ else
+ VERB2("Running load at exit looks good: %g (%g%%)",
+ total_running, running_ratio);
+}
+
+#define PR_STATS(descr, st) \
+ INFO5("| %.*s: %g / %g / %g", 39, \
+ descr " total/avg./stddev. at exit.........................", \
+ st.get_sum(), st.get_mean(), st.get_stddev())
+
int main(int argc, char* argv[])
{
// Note: variables used after THROW must be declared as volatile.
simulation_time.start();
// Set default logging parameters
- // xbt_log_control_set("simu.thres:verbose");
- xbt_log_control_set("simu.fmt:'[%h %r] [%c/%p] %m%n'");
+ bool do_log_control_set = true;
+ for (int i = 1 ; do_log_control_set && i < argc ; i++)
+ do_log_control_set = !(argv[i][0] == '-' && argv[i][1] != '-' &&
+ strchr(argv[i] + 1, 'v'));
+ if (do_log_control_set) {
+ // xbt_log_control_set("simu.thres:verbose");
+ xbt_log_control_set("simu.fmt:'[%h %r] [%c/%p] %m%n'");
+ xbt_log_control_set("main.fmt:'[%c/%p] %m%n'");
+ }
// Initialize some MSG internal data.
// Note: MSG_global_init() may throw an exception, but it seems
MSG_global_init(&argc, argv);
// Parse global parameters
- int parse_res = opt::parse_args(&argc, argv);
+ bool parse_res = opt::parse_args(&argc, argv);
if (!parse_res
|| opt::version_requested || opt::help_requested) {
if (opt::version_requested)
MSG_clean();
exit(parse_res ? EXIT_NO_FAILURE : EXIT_FAILURE_ARGS);
}
+ INFO3("%s v%s (%s)", opt::program_name.c_str(), version::num.c_str(),
+ version::date.c_str());
opt::print();
TRY {
exit_status = EXIT_FAILURE_INIT; // =====
- // Register the main function of an agent in a global table.
- MSG_function_register("simulation_main", simulation_main);
+ // Register the default function of an agent
+ // MSG_function_register("simulation_main", simulation_main);
+ MSG_function_register_default(simulation_main);
// Create the platform and the application.
MSG_create_environment(opt::platform_file.c_str());
if (opt::auto_depl::enabled) {
if (!opt::auto_depl::nhosts)
opt::auto_depl::nhosts = hostdata::size();
+ if (opt::auto_depl::nhosts > hostdata::size()) {
+ WARN2("%u hosts is too much: limiting to %u",
+ opt::auto_depl::nhosts, (unsigned )hostdata::size());
+ opt::auto_depl::nhosts = hostdata::size();
+ }
if (!opt::auto_depl::load)
- opt::auto_depl::load = hostdata::size();
+ opt::auto_depl::load = opt::auto_depl::nhosts;
MY_launch_application(); // it is already opt::* aware...
} else {
MSG_launch_application(opt::deployment_file.c_str());
}
+ // Register tracing categories
+ TRACE_category(TRACE_CAT_COMP);
+ TRACE_category(TRACE_CAT_CTRL);
+ TRACE_category(TRACE_CAT_DATA);
+
exit_status = EXIT_FAILURE_SIMU; // =====
+ proc_mutex = xbt_mutex_init();
+ proc_cond = xbt_cond_init();
+ proc_counter = 0;
+
// Launch the MSG simulation.
- INFO0("Starting simulation...");
+ INFO1("Starting simulation at %f...", MSG_get_clock());
res = MSG_main();
- INFO0("Simulation ended.");
simulated_time = MSG_get_clock();
+ INFO1("Simulation ended at %f.", simulated_time);
+
+ xbt_cond_destroy(proc_cond);
+ xbt_mutex_destroy(proc_mutex);
+
if (res != MSG_OK)
THROW1(0, 0, "MSG_main() failed with status %#x", res);
// Report final simulation status.
if (simulated_time >= 0.0) {
simulation_time.stop();
+ check_for_lost_load();
INFO0(",----[ Results ]");
- INFO1("| Total simulated time...: %g", simulated_time);
- INFO1("| Total simulation time..: %g", simulation_time.duration());
+ PR_STATS("Load", loads);
+ PR_STATS("Computation", comps);
+ INFO1("| Total simulated time...................: %g", simulated_time);
+ INFO1("| Total simulation time..................: %g",
+ simulation_time.duration());
INFO0("`----");
}
if (exit_status)
