+#include <cmath>
#include <cstring>
#include <iostream>
+#include <numeric>
#include <stdexcept>
+#include <vector>
#include <msg/msg.h>
#include <xbt/log.h>
-#include "hostdata.h"
-#include "misc.h"
-#include "options.h"
-#include "process.h"
-#include "timer.h"
-#include "version.h"
// Creates log categories
-XBT_LOG_NEW_CATEGORY(simu, "Simulation messages");
+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);
-// 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[])
+#include "deployment.h"
+#include "hostdata.h"
+#include "misc.h"
+#include "options.h"
+#include "process.h"
+#include "timer.h"
+#include "version.h"
+
+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
+ };
+
+ std::vector<double> loads;
+ double load_stddev;
+ double load_avg;
+}
+
+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);
result = proc->run();
+ loads.push_back(proc->get_load());
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
+ DEBUG2("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
+ DEBUG2("Running load at exit looks good: %g (%g%%)",
+ total_running, running_ratio);
+}
+
+static void compute_load_imbalance()
+{
+ unsigned n = loads.size();
+ load_avg = std::accumulate(loads.begin(), loads.end(), 0.0) / n;
+ double variance = 0.0;
+ double epsilon = 0.0;
+ for (unsigned i = 0 ; i < n ; ++i) {
+ double diff = loads[i] - load_avg;
+ variance += diff * diff;
+ epsilon += diff;
+ }
+ variance = (variance - (epsilon * epsilon) / n) / n;
+ load_stddev = sqrt(variance);
+}
+
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_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());
hostdata::create();
if (opt::auto_depl::enabled) {
- opt::auto_depl::nhosts = hostdata::size();
- opt::auto_depl::load = hostdata::size();
- try {
- // fixme: do auto deployment
- }
- catch (std::exception& e) {
- THROW1(0, 0, "%s", e.what());
+ 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 = opt::auto_depl::nhosts;
+ MY_launch_application(); // it is already opt::* aware...
} else {
MSG_launch_application(opt::deployment_file.c_str());
}
exit_status = EXIT_FAILURE_SIMU; // =====
// 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);
+ check_for_lost_load();
+ compute_load_imbalance();
if (res != MSG_OK)
THROW1(0, 0, "MSG_main() failed with status %#x", res);
if (simulated_time >= 0.0) {
simulation_time.stop();
INFO0(",----[ Results ]");
- INFO1("| Total simulated time...: %g", simulated_time);
- INFO1("| Total simulation time..: %g", simulation_time.duration());
+ INFO2("| Load avg./stddev. at exit.: %g / %g", load_avg, load_stddev);
+ INFO1("| Total simulated time......: %g", simulated_time);
+ INFO1("| Total simulation time.....: %g", simulation_time.duration());
INFO0("`----");
}
if (exit_status)
