X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/loba.git/blobdiff_plain/7725e3d7f34e70c0ba01ddc4e1055e096e72c2c3..5d1712c42d9e55e896c0a7d2acec2fde03bfc3d7:/main.cpp diff --git a/main.cpp b/main.cpp index 907869e..61dfd42 100644 --- a/main.cpp +++ b/main.cpp @@ -1,11 +1,8 @@ -#include -#include -#include -#include +#include +#include +#include // strchr #include -#include #include -#include #include #include @@ -16,6 +13,7 @@ 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_NEW_SUBCATEGORY(thrd, simu, "Messages from thread wrapper class"); XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(main); @@ -24,9 +22,14 @@ XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(main); #include "misc.h" #include "options.h" #include "process.h" +#include "statistics.h" +#include "synchro.h" #include "timer.h" +#include "tracing.h" #include "version.h" +#define DATA_DESCR_WIDTH 37 + namespace { // Failure exit status enum { @@ -35,11 +38,27 @@ namespace { EXIT_FAILURE_INIT = 0x02, // failed to initialize simulator EXIT_FAILURE_SIMU = 0x04, // simulation failed EXIT_FAILURE_CLEAN = 0x08, // error at cleanup + EXIT_FAILURE_INTR = 0x10, // interrupted by user + EXIT_FAILURE_LOAD = 0x20, // lost load on exit + EXIT_FAILURE_OTHER = 0x40, // other error }; - std::vector loads; - double load_stddev; - double load_avg; + // Cannot be globally initialized... + mutex_t* proc_mutex; + condition_t* proc_cond; + unsigned proc_counter = 0; + + statistics loads; + statistics comps; + statistics data_send_amount; + statistics data_recv_amount; + statistics data_send_count; + statistics data_recv_count; + statistics ctrl_send_amount; + statistics ctrl_recv_amount; + statistics ctrl_send_count; + statistics ctrl_recv_count; + } static int simulation_main(int argc, char* argv[]) @@ -48,72 +67,124 @@ static int simulation_main(int argc, char* argv[]) process* proc; try { proc = opt::loba_algorithms.new_instance(opt::loba_algo, argc, argv); + + proc_mutex->acquire(); + ++proc_counter; + proc_mutex->release(); + result = proc->run(); - loads.push_back(proc->get_load()); + + proc_mutex->acquire(); + loads.push(proc->get_real_load()); + comps.push(proc->get_comp_amount()); + data_send_amount.push(proc->get_data_send_amount()); + data_recv_amount.push(proc->get_data_recv_amount()); + data_send_count.push(proc->get_data_send_count()); + data_recv_count.push(proc->get_data_recv_count()); + ctrl_send_amount.push(proc->get_ctrl_send_amount()); + ctrl_recv_amount.push(proc->get_ctrl_recv_amount()); + ctrl_send_count.push(proc->get_ctrl_send_count()); + ctrl_recv_count.push(proc->get_ctrl_recv_count()); + + // 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; + proc_cond->broadcast(); + while (proc_counter > 0) + proc_cond->wait(*proc_mutex); + proc_mutex->release(); + delete proc; } - catch (std::invalid_argument& e) { - THROW1(arg_error, 0, "%s", e.what()); + catch (const std::invalid_argument& e) { + THROWF(arg_error, 0, "%s", e.what()); + } + catch (const std::exception& e) { + THROWF(0, 0, "%s", e.what()); } return result; } -static void check_for_lost_load() +static bool check_for_lost_load() { + bool res = true; 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%%) <============", + if (lost_ratio < -opt::load_ratio_threshold) { + XBT_ERROR("Gained load at exit! %g (%g%%) <============", + -lost, -lost_ratio); + res = false; + } else if (lost_ratio > opt::load_ratio_threshold) { + XBT_ERROR("Lost load at exit! %g (%g%%) <============", lost, lost_ratio); - else - DEBUG2("Total load at exit looks good: %g (%g%%)", lost, lost_ratio); + res = false; + } else + XBT_VERB("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%%) <============", + if (running_ratio < -opt::load_ratio_threshold) { + XBT_ERROR("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%%) <============", + res = false; + } else if (running_ratio > opt::load_ratio_threshold) { + XBT_ERROR("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); + res = false; + } else + XBT_VERB("Running load at exit looks good: %g (%g%%)", + total_running, running_ratio); + return res; +} + +static void signal_handler(int /*sig*/) +{ + if (!opt::exit_request) { + XBT_CRITICAL(">>>>>>>>>>" + " caught CTRL-C: global exit requested " + "<<<<<<<<<<"); + opt::exit_request = 1; + } else { + XBT_CRITICAL(">>>>>>>>>>" + " caught CTRL-C for the 2nd time: exit immediately " + "<<<<<<<<<<"); + exit(EXIT_FAILURE_INTR); + } } -static void compute_load_imbalance() +static void install_signal_handler() { - using std::tr1::bind; - using std::tr1::placeholders::_1; - - unsigned n = loads.size(); - load_avg = std::accumulate(loads.begin(), loads.end(), 0.0) / n; - - std::vector diff(loads); - std::transform(diff.begin(), diff.end(), diff.begin(), - bind(std::minus(), _1, load_avg)); - double epsilon = std::accumulate(diff.begin(), diff.end(), 0.0); - double square_sum = std::inner_product(diff.begin(), diff.end(), - diff.begin(), 0.0); - double variance = (square_sum - (epsilon * epsilon) / n) / n; - load_stddev = sqrt(variance); + struct sigaction action; + action.sa_handler = signal_handler; + sigemptyset(&action.sa_mask); + action.sa_flags = SA_RESTART; + if (sigaction(SIGINT, &action, NULL) == -1) { + std::cerr << "sigaction: " << strerror(errno) << "\n"; + exit(EXIT_FAILURE_OTHER); + } } +#define PR_STATS(descr, st) \ + XBT_INFO("| %.*s: %g / %g / %g", DATA_DESCR_WIDTH, \ + descr " (total/avg./stddev)................................", \ + 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. volatile int exit_status = 0; // global exit status volatile double simulated_time = -1.0; - timestamp simulation_time; + timestamp elapsed_time(timestamp::wallclock_time); + timestamp simulation_time(timestamp::cpu_time); xbt_ex_t ex; MSG_error_t res; + elapsed_time.start(); simulation_time.start(); // Set default logging parameters @@ -131,6 +202,7 @@ int main(int argc, char* argv[]) // Note: MSG_global_init() may throw an exception, but it seems // impossible to catch it correctly :-( MSG_global_init(&argc, argv); + install_signal_handler(); // Parse global parameters bool parse_res = opt::parse_args(&argc, argv); @@ -146,7 +218,7 @@ int main(int argc, char* argv[]) 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(), + XBT_INFO("%s v%s (%s)", opt::program_name.c_str(), version::num.c_str(), version::date.c_str()); opt::print(); @@ -158,34 +230,53 @@ int main(int argc, char* argv[]) MSG_function_register_default(simulation_main); // Create the platform and the application. + XBT_DEBUG("Loading platform file..."); MSG_create_environment(opt::platform_file.c_str()); + XBT_DEBUG("Creating hostdata..."); hostdata::create(); + XBT_INFO("Loaded description of %zd hosts.", hostdata::size()); + XBT_DEBUG("Deploying processes..."); 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()); + XBT_WARN("%u hosts is too much: limiting to %zu", + opt::auto_depl::nhosts, hostdata::size()); opt::auto_depl::nhosts = hostdata::size(); } - if (!opt::auto_depl::load) + if (opt::auto_depl::load == 0.0) { + XBT_WARN("Initial load is zero! " + "Falling back on old behaviour (load = nhosts)."); opt::auto_depl::load = opt::auto_depl::nhosts; + } else if (opt::auto_depl::load < 0.0) + 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()); } + // Register tracing categories + TRACE_category_with_color(TRACE_CAT_COMP, TRACE_COLOR_COMP); + TRACE_category_with_color(TRACE_CAT_CTRL, TRACE_COLOR_CTRL); + TRACE_category_with_color(TRACE_CAT_DATA, TRACE_COLOR_DATA); + exit_status = EXIT_FAILURE_SIMU; // ===== + proc_mutex = new mutex_t(); + proc_cond = new condition_t(); + // Launch the MSG simulation. - INFO1("Starting simulation at %f...", MSG_get_clock()); + XBT_INFO("Starting simulation at %f...", MSG_get_clock()); res = MSG_main(); simulated_time = MSG_get_clock(); - INFO1("Simulation ended at %f.", simulated_time); - check_for_lost_load(); - compute_load_imbalance(); + XBT_INFO("Simulation ended at %f.", simulated_time); + + delete proc_cond; + delete proc_mutex; + if (res != MSG_OK) - THROW1(0, 0, "MSG_main() failed with status %#x", res); + THROWF(0, 0, "MSG_main() failed with status %#x", res); exit_status = EXIT_NO_FAILURE; // ===== } @@ -193,8 +284,8 @@ int main(int argc, char* argv[]) int len = strlen(ex.msg); if (len > 0 && ex.msg[len - 1] == '\n') ex.msg[len - 1] = '\0'; // strip the ending '\n' - ERROR1("%s", ex.msg); - DEBUG3("Error from %s() in %s:%d", ex.func, ex.file, ex.line); + XBT_ERROR("%s", ex.msg); + XBT_DEBUG("Error from %s() in %s:%d", ex.func, ex.file, ex.line); xbt_ex_free(ex); } @@ -202,23 +293,42 @@ int main(int argc, char* argv[]) hostdata::destroy(); res = MSG_clean(); if (res != MSG_OK) { - ERROR1("MSG_clean() failed with status %#x", res); + XBT_ERROR("MSG_clean() failed with status %#x", res); exit_status |= EXIT_FAILURE_CLEAN; } // Report final simulation status. if (simulated_time >= 0.0) { simulation_time.stop(); - INFO0(",----[ Results ]"); - 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("`----"); + elapsed_time.stop(); + if (!check_for_lost_load()) + exit_status |= EXIT_FAILURE_LOAD; + XBT_INFO(",----[ Results ]"); + PR_STATS("Load", loads); + PR_STATS("Computation", comps); + PR_STATS("Data send amount", data_send_amount); + PR_STATS("Data recv amount", data_recv_amount); + PR_STATS("Data send count", data_send_count); + PR_STATS("Data recv count", data_recv_count); + PR_STATS("Ctrl send amount", ctrl_send_amount); + PR_STATS("Ctrl recv amount", ctrl_recv_amount); + PR_STATS("Ctrl send count", ctrl_send_count); + PR_STATS("Ctrl recv count", ctrl_recv_count); + XBT_INFO("| %.*s: %g", DATA_DESCR_WIDTH, + "Total simulated time..................................", + simulated_time); + XBT_INFO("| %.*s: %g", DATA_DESCR_WIDTH, + "Total simulation time.................................", + simulation_time.duration()); + XBT_INFO("| %.*s: %g", DATA_DESCR_WIDTH, + "Elapsed (wall clock) time.............................", + elapsed_time.duration()); + XBT_INFO("`----"); } if (exit_status) - ERROR1("Simulation failed (%#x).", exit_status); + XBT_ERROR("Simulation failed (%#x).", exit_status); else - INFO0("Simulation succeeded."); + XBT_INFO("Simulation succeeded."); return exit_status; }