Simulate computations in a separate thread.

[loba.git] / main.cpp

diff --git a/main.cpp b/main.cpp
index 8a23727fbed85e682965941dcce48ca55ee93bff..9a339282d115805bc6178ccdeb85fd1e6c7f42ed 100644 (file)
--- a/main.cpp
+++ b/main.cpp
@@ -1,9 +1,6 @@
-#include <cmath>

 #include <cstring>
 #include <iostream>
 #include <cstring>
 #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>
 


@@ -14,6 +11,7 @@ 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);
 


@@ -22,7 +20,10 @@ 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"
 
 namespace {
 #include "version.h"
 
 namespace {


@@ -35,9 +36,13 @@ namespace {
         EXIT_FAILURE_CLEAN = 0x08,  // error at cleanup
     };
 
         EXIT_FAILURE_CLEAN = 0x08,  // error at cleanup
     };
 

-    std::vector<double> loads;
-    double load_stddev;
-    double load_avg;
+    mutex_t proc_mutex;
+    condition_t proc_cond;
+    unsigned proc_counter = 0;
+
+    statistics comps;
+    statistics loads;
+

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


@@ -46,13 +51,36 @@ 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();

-        loads.push_back(proc->get_load());
+
+        proc_mutex.acquire();
+        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;
+        proc_cond.broadcast();
+        while (proc_counter > 0)
+            proc_cond.wait(proc_mutex);
+        proc_mutex.release();
+

         delete proc;
     }
         delete proc;
     }

-    catch (std::invalid_argument& e) {
+    catch (const std::invalid_argument& e) {

         THROW1(arg_error, 0, "%s", e.what());
     }
         THROW1(arg_error, 0, "%s", e.what());
     }

+    catch (const std::exception& e) {
+        THROW1(0, 0, "%s", e.what());
+    }

     return result;
 }
 
     return result;
 }
 


@@ -64,41 +92,31 @@ static void check_for_lost_load()
     double lost = total_init - total_exit;
     double lost_ratio = 100.0 * lost / total_init;
     if (lost_ratio < -opt::load_ratio_threshold)
     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);
+        XBT_ERROR("Gained load at exit! %g (%g%%) <============",
+                  -lost, -lost_ratio);

     else if (lost_ratio > opt::load_ratio_threshold)
     else if (lost_ratio > opt::load_ratio_threshold)

-        CRITICAL2("Lost load at exit! %g (%g%%) <============",
+        XBT_ERROR("Lost load at exit! %g (%g%%) <============",

                   lost, lost_ratio);
     else
                   lost, lost_ratio);
     else

-        DEBUG2("Total load at exit looks good: %g (%g%%)", lost, lost_ratio);
+        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)
 
     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%%) <============",
+        XBT_ERROR("Negative running load at exit! %g (%g%%) <============",

                   total_running, running_ratio);
     else if (running_ratio > opt::load_ratio_threshold)
                   total_running, running_ratio);
     else if (running_ratio > opt::load_ratio_threshold)

-        CRITICAL2("Remaining running load at exit! %g (%g%%) <============",
+        XBT_ERROR("Remaining running load at exit! %g (%g%%) <============",

                   total_running, running_ratio);
     else
                   total_running, running_ratio);
     else

-        DEBUG2("Running load at exit looks good: %g (%g%%)",
-               total_running, running_ratio);
+        XBT_VERB("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);
-}
+#define PR_STATS(descr, st)                                             \
+    XBT_INFO("| %.*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[])
 {
 
 int main(int argc, char* argv[])
 {


@@ -141,7 +159,7 @@ 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();
 


@@ -159,8 +177,8 @@ int main(int argc, char* argv[])
             if (!opt::auto_depl::nhosts)
                 opt::auto_depl::nhosts = hostdata::size();
             if (opt::auto_depl::nhosts > hostdata::size()) {
             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)
                 opt::auto_depl::nhosts = hostdata::size();
             }
             if (!opt::auto_depl::load)


@@ -170,15 +188,19 @@ int main(int argc, char* argv[])
             MSG_launch_application(opt::deployment_file.c_str());
         }
 
             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; // =====
 
         // Launch the MSG simulation.
         exit_status = EXIT_FAILURE_SIMU; // =====
 
         // 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);
-        check_for_lost_load();
-        compute_load_imbalance();
+        XBT_INFO("Simulation ended at %f.", simulated_time);
+

         if (res != MSG_OK)
             THROW1(0, 0, "MSG_main() failed with status %#x", res);
 
         if (res != MSG_OK)
             THROW1(0, 0, "MSG_main() failed with status %#x", res);
 


@@ -188,8 +210,8 @@ 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);
     }
 


@@ -197,23 +219,27 @@ 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();

-        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("`----");
+        check_for_lost_load();
+        XBT_INFO(",----[ Results ]");
+        PR_STATS("Load", loads);
+        PR_STATS("Computation", comps);
+        XBT_INFO("| Total simulated time...................: %g",
+                 simulated_time);
+        XBT_INFO("| Total simulation time..................: %g",
+                 simulation_time.duration());
+        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;
 }