X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/loba.git/blobdiff_plain/befaff140ab7a986e45c3e4d73ab5ed17eab3e8d..131a59f87a95e3a3dc7a3cdb4f06fbcb66e826b3:/main.cpp?ds=inline diff --git a/main.cpp b/main.cpp index 478d1e8..89e9bec 100644 --- a/main.cpp +++ b/main.cpp @@ -4,6 +4,7 @@ #include <cstring> // strchr #include <iostream> #include <stdexcept> +#include <unistd.h> #include <msg/msg.h> #include <xbt/log.h> @@ -29,7 +30,7 @@ XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(main); #include "tracing.h" #include "version.h" -#define DATA_DESCR_WIDTH 37 +#define DATA_DESCR_WIDTH 39 namespace { // Failure exit status @@ -51,6 +52,9 @@ namespace { statistics loads; statistics comps; + statistics comp_iterations; + statistics all_comp_iterations; + statistics iter_deviation; statistics data_send_amount; statistics data_recv_amount; statistics data_send_count; @@ -59,6 +63,8 @@ namespace { statistics ctrl_recv_amount; statistics ctrl_send_count; statistics ctrl_recv_count; + statistics idle_duration; + statistics convergence; } @@ -66,46 +72,47 @@ static int simulation_main(int argc, char* argv[]) { int result; 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(); - - 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 (const std::invalid_argument& e) { - THROWF(arg_error, 0, "%s", e.what()); - } - catch (const std::exception& e) { - THROWF(0, 0, "%s", e.what()); - } + + proc = opt::loba_algorithms.new_instance(opt::loba_algo, argc, argv); + + proc_mutex->acquire(); + ++proc_counter; + proc_mutex->release(); + + result = proc->run(); + + proc_mutex->acquire(); + loads.push(proc->get_real_load()); + comps.push(proc->get_comp_amount()); + comp_iterations.push(proc->get_comp_iter()); + all_comp_iterations.push(proc->get_all_comp_iter()); + iter_deviation.push(proc->get_iter_deviation()); + 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()); + idle_duration.push(proc->get_idle_duration()); + double c = proc->get_convergence(); + if (c != -1.0) + convergence.push(c); + + // 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; + return result; } @@ -143,6 +150,15 @@ static bool check_for_lost_load() return res; } +static void check_file_access(const std::string& name) +{ + if (access(name.c_str(), R_OK) != 0) { + std::cerr << "ERROR: cannot access to file \"" + << name << "\" for reading: " << strerror(errno) << "\n"; + exit(EXIT_FAILURE_ARGS); + } +} + static void signal_handler(int /*sig*/) { if (!opt::exit_request) { @@ -165,24 +181,27 @@ static void install_signal_handler() sigemptyset(&action.sa_mask); action.sa_flags = SA_RESTART; if (sigaction(SIGINT, &action, NULL) == -1) { - std::cerr << "sigaction: " << strerror(errno) << "\n"; + std::cerr << "ERROR: sigaction: " << strerror(errno) << "\n"; exit(EXIT_FAILURE_OTHER); } } +#define PR_VALUE(descr, format, ...) \ + XBT_INFO("| %.*s: " format, DATA_DESCR_WIDTH, \ + descr ".................................................", \ + __VA_ARGS__) + #define PR_STATS(descr, st) \ XBT_INFO("| %.*s: %g / %g / %g", DATA_DESCR_WIDTH, \ - descr " (total/avg./stddev)................................", \ + descr " (sum/avg/dev)...................................", \ 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; + int exit_status = 0; // global exit status + double simulated_time = -1.0; timestamp elapsed_time(timestamp::wallclock_time); timestamp simulation_time(timestamp::cpu_time); - xbt_ex_t ex; MSG_error_t res; elapsed_time.start(); @@ -200,8 +219,6 @@ int main(int argc, char* argv[]) } // Initialize some MSG internal data. - // Note: MSG_global_init() may throw an exception, but it seems - // impossible to catch it correctly :-( MSG_global_init(&argc, argv); install_signal_handler(); @@ -223,77 +240,69 @@ int main(int argc, char* argv[]) version::date.c_str()); opt::print(); - TRY { - exit_status = EXIT_FAILURE_INIT; // ===== - - // 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. - 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()) { - 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 == 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; - double iload = std::trunc(opt::auto_depl::load); - if (opt::integer_transfer && opt::auto_depl::load != iload) { - XBT_WARN("Total load %g is not an integer. Truncate it.", - opt::auto_depl::load); - opt::auto_depl::load = iload; - } - MY_launch_application(); // it is already opt::* aware... - } else { - MSG_launch_application(opt::deployment_file.c_str()); + // 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. + XBT_DEBUG("Loading platform file..."); + check_file_access(opt::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()) { + 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 == 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; + double iload = std::trunc(opt::auto_depl::load); + if (opt::integer_transfer && opt::auto_depl::load != iload) { + XBT_WARN("Total load %g is not an integer. Truncate it.", + opt::auto_depl::load); + opt::auto_depl::load = iload; + } + MY_launch_application(); // it is already opt::* aware... + } else { + check_file_access(opt::deployment_file); + 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(); + // 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); - // Launch the MSG simulation. - XBT_INFO("Starting simulation at %f...", MSG_get_clock()); - res = MSG_main(); - simulated_time = MSG_get_clock(); - XBT_INFO("Simulation ended at %f.", simulated_time); + proc_mutex = new mutex_t(); + proc_cond = new condition_t(); + process::set_proc_mutex(proc_mutex); - delete proc_cond; - delete proc_mutex; + // Launch the MSG simulation. + XBT_INFO("Starting simulation at %f...", MSG_get_clock()); + res = MSG_main(); + simulated_time = MSG_get_clock(); + XBT_INFO("Simulation ended at %f.", simulated_time); - if (res != MSG_OK) - THROWF(0, 0, "MSG_main() failed with status %#x", res); + process::set_proc_mutex(NULL); + delete proc_cond; + delete proc_mutex; - exit_status = EXIT_NO_FAILURE; // ===== - } - CATCH (ex) { - int len = strlen(ex.msg); - if (len > 0 && ex.msg[len - 1] == '\n') - ex.msg[len - 1] = '\0'; // strip the ending '\n' - XBT_ERROR("%s", ex.msg); - XBT_DEBUG("Error from %s() in %s:%d", ex.func, ex.file, ex.line); - xbt_ex_free(ex); + if (res == MSG_OK) { + exit_status = EXIT_NO_FAILURE; + } else { + XBT_ERROR("MSG_main() failed with status %#x", res); + exit_status = EXIT_FAILURE_SIMU; } // Clean the MSG simulation. @@ -310,9 +319,12 @@ int main(int argc, char* argv[]) 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("Comp. iterations", comp_iterations); + PR_STATS("X-Comp. iterations", all_comp_iterations); PR_STATS("Data send amount", data_send_amount); PR_STATS("Data recv amount", data_recv_amount); PR_STATS("Data send count", data_send_count); @@ -321,16 +333,29 @@ int main(int argc, char* argv[]) 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()); + PR_VALUE("Total simulated time", "%g", simulated_time); + PR_VALUE("Total simulation time", "%g", simulation_time.duration()); + PR_VALUE("Elapsed (wall clock) time", "%g", elapsed_time.duration()); XBT_INFO("`----"); + + double load_imbalance = 100.0 * loads.get_stddev() / loads.get_mean(); + double transfer_amount = + data_send_amount.get_sum() / opt::comm_cost(loads.get_sum()); + + XBT_INFO(",----[ Useful metrics ]"); + PR_VALUE("Final load imbalance", "%g %s", load_imbalance, + "percent of the load average"); + PR_VALUE("Data transfer amount", "%g %s", transfer_amount, + "times the total amount of data"); + PR_VALUE("Number of hosts that converged", "%u / %u", + convergence.get_count(), loads.get_count()); + PR_VALUE("Times of convergence (min/max/avg/dev)", "%g / %g / %g / %g", + convergence.get_min(), convergence.get_max(), + convergence.get_mean(), convergence.get_stddev()); + PR_STATS("Idle duration", idle_duration); + PR_STATS("Supernumer. comp. iter.", iter_deviation); + XBT_INFO("`----"); + } if (exit_status) XBT_ERROR("Simulation failed (%#x).", exit_status);