New parameter: "-k value", to specify divisor for algorithms *best*.

[loba.git] / main.cpp

diff --git a/main.cpp b/main.cpp
index 92e48827635c67a5f3c2b9ceef8e0502e635adab..9ad4b53aacf49fb72d12864d86e7d99174e28986 100644 (file)
--- a/main.cpp
+++ b/main.cpp
@@ -1,11 +1,9 @@
-#include <algorithm>
+#include <cerrno>

 #include <cmath>
 #include <cmath>

-#include <cstring>
-#include <tr1/functional>
+#include <csignal>
+#include <cstring>              // strchr

 #include <iostream>
 #include <iostream>

-#include <numeric>

 #include <stdexcept>
 #include <stdexcept>

-#include <vector>

 #include <msg/msg.h>
 #include <xbt/log.h>
 
 #include <msg/msg.h>
 #include <xbt/log.h>
 


@@ -16,6 +14,7 @@ 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(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);
 
 
 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(main);
 


@@ -24,9 +23,14 @@ XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(main);
 #include "misc.h"
 #include "options.h"
 #include "process.h"
 #include "misc.h"
 #include "options.h"
 #include "process.h"

+#include "statistics.h"
+#include "synchro.h"

 #include "timer.h"
 #include "timer.h"

+#include "tracing.h"

 #include "version.h"
 
 #include "version.h"
 

+#define DATA_DESCR_WIDTH 39
+

 namespace {
     // Failure exit status
     enum {
 namespace {
     // Failure exit status
     enum {


@@ -35,16 +39,29 @@ namespace {
         EXIT_FAILURE_INIT  = 0x02,  // failed to initialize simulator
         EXIT_FAILURE_SIMU  = 0x04,  // simulation failed
         EXIT_FAILURE_CLEAN = 0x08,  // error at cleanup
         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<double> comps;
-    double comp_total;
-    double comp_avg;
-    double comp_stddev;
+    // Cannot be globally initialized...
+    mutex_t* proc_mutex;
+    condition_t* proc_cond;
+    unsigned proc_counter = 0;
+
+    statistics loads;
+    statistics comps;
+    statistics comp_iterations;
+    statistics all_comp_iterations;
+    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;

 
 

-    std::vector<double> loads;
-    double load_avg;
-    double load_stddev;

 }
 
 static int simulation_main(int argc, char* argv[])
 }
 
 static int simulation_main(int argc, char* argv[])


@@ -53,88 +70,131 @@ static int simulation_main(int argc, char* argv[])
     process* proc;
     try {
         proc = opt::loba_algorithms.new_instance(opt::loba_algo, argc, 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();
         result = proc->run();

-        comps.push_back(proc->get_comp());
-        loads.push_back(proc->get_load());
+
+        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());
+        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;
     }
         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;
 }
 
     }
     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_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;
     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%%) <============",
+    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);
                   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);
+        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;
 
     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);
                   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);
                   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 statistics(const std::vector<double>& vec,
-                       double* sum, double* avg, double* stddev)
+static void signal_handler(int /*sig*/)

 {
 {

-    using std::tr1::bind;
-    using std::tr1::placeholders::_1;
-
-    unsigned n = vec.size();
-    double vec_sum = std::accumulate(vec.begin(), vec.end(), 0.0);
-    double vec_avg = vec_sum / n;
-
-    if (sum)
-        *sum = vec_sum;
-    if (avg)
-        *avg = vec_avg;
-
-    if (stddev) {
-        std::vector<double> diff(vec);
-        std::transform(diff.begin(), diff.end(), diff.begin(),
-                       bind(std::minus<double>(), _1, vec_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;
-        *stddev = sqrt(variance);
+    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_metrics()
+static void install_signal_handler()

 {
 {

-    statistics(comps, &comp_total, &comp_avg, &comp_stddev);
-    statistics(loads, NULL, &load_avg, &load_stddev);
+    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_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).............................", \
+             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 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;
 
     xbt_ex_t ex;
     MSG_error_t res;
 

+    elapsed_time.start();

     simulation_time.start();
 
     // Set default logging parameters
     simulation_time.start();
 
     // Set default logging parameters


@@ -152,6 +212,7 @@ 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);
     // 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);
 
     // Parse global parameters
     bool parse_res = opt::parse_args(&argc, argv);


@@ -167,7 +228,7 @@ int main(int argc, char* argv[])
         MSG_clean();
         exit(parse_res ? EXIT_NO_FAILURE : EXIT_FAILURE_ARGS);
     }
         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();
 
           version::date.c_str());
     opt::print();
 


@@ -179,32 +240,59 @@ int main(int argc, char* argv[])
         MSG_function_register_default(simulation_main);
 
         // Create the platform and the application.
         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());
         MSG_create_environment(opt::platform_file.c_str());

+        XBT_DEBUG("Creating hostdata...");

         hostdata::create();
         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()) {
         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();
             }
                 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;
                 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());
         }
 
             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; // =====
 
         exit_status = EXIT_FAILURE_SIMU; // =====
 

+        proc_mutex = new mutex_t();
+        proc_cond = new condition_t();
+

         // Launch the MSG simulation.
         // 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();
         res = MSG_main();
         simulated_time = MSG_get_clock();

-        INFO1("Simulation ended at %f.", simulated_time);
+        XBT_INFO("Simulation ended at %f.", simulated_time);
+
+        delete proc_cond;
+        delete proc_mutex;
+

         if (res != MSG_OK)
         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; // =====
     }
 
         exit_status = EXIT_NO_FAILURE; // =====
     }


@@ -212,8 +300,8 @@ 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'
         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);
     }
 
         xbt_ex_free(ex);
     }
 


@@ -221,29 +309,51 @@ int main(int argc, char* argv[])
     hostdata::destroy();
     res = MSG_clean();
     if (res != MSG_OK) {
     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();
         exit_status |= EXIT_FAILURE_CLEAN;
     }
 
     // Report final simulation status.
     if (simulated_time >= 0.0) {
         simulation_time.stop();

-        check_for_lost_load();
-        compute_metrics();
-        INFO0(",----[ Results ]");
-        INFO2("| Load avg./stddev. at exit..............: %g / %g",
-              load_avg, load_stddev);
-        INFO3("| Computation total/avg./stddev. at exit.: %g / %g / %g",
-              comp_total, comp_avg, comp_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("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);
+        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);
+        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");
+        XBT_INFO("`----");
+

     }
     if (exit_status)
     }
     if (exit_status)

-        ERROR1("Simulation failed (%#x).", exit_status);
+        XBT_ERROR("Simulation failed (%#x).", exit_status);

     else
     else

-        INFO0("Simulation succeeded.");
+        XBT_INFO("Simulation succeeded.");

 
     return exit_status;
 }
 
     return exit_status;
 }