Document the rationale behind process::accounting.

[loba.git] / main.cpp

diff --git a/main.cpp b/main.cpp
index 0ec5b6da05da76d9d8d80571af3497cc4118df94..478d1e870fec04d34ae80e461275d400e8aa0e46 100644 (file)
--- a/main.cpp
+++ b/main.cpp
@@ -1,15 +1,11 @@
-#include <cstring>
+#include <cerrno>
+#include <cmath>
+#include <csignal>
+#include <cstring>              // strchr

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

-#include "deployment.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, "Root of simulation messages");
 
 // Creates log categories
 XBT_LOG_NEW_CATEGORY(simu, "Root of simulation messages");


@@ -18,56 +14,199 @@ 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);
 

-// 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 "deployment.h"
+#include "hostdata.h"
+#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 {
+        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
+        EXIT_FAILURE_INTR  = 0x10,  // interrupted by user
+        EXIT_FAILURE_LOAD  = 0x20,  // lost load on exit
+        EXIT_FAILURE_OTHER = 0x40,  // other error
+    };
+
+    // 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;

 
 

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

 {
     int result;
     process* proc;
     try {
         proc = opt::loba_algorithms.new_instance(opt::loba_algo, argc, 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();
         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;
     }
         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 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) {
+        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);
+        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) {
+        XBT_ERROR("Negative running load at exit! %g (%g%%) <============",
+                  total_running, running_ratio);
+        res = false;
+    } else if (running_ratio > opt::load_ratio_threshold) {
+        XBT_ERROR("Remaining running load at exit! %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 install_signal_handler()
+{
+    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;
 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

-    // 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'");
+    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
     // impossible to catch it correctly :-(
     MSG_global_init(&argc, 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();

 
     // Parse global parameters
 
     // Parse global parameters

-    int parse_res = opt::parse_args(&argc, argv);
+    bool parse_res = opt::parse_args(&argc, argv);

     if (!parse_res
         || opt::version_requested || opt::help_requested) {
         if (opt::version_requested)
     if (!parse_res
         || opt::version_requested || opt::help_requested) {
         if (opt::version_requested)


@@ -80,6 +219,8 @@ 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);
     }

+    XBT_INFO("%s v%s (%s)", opt::program_name.c_str(), version::num.c_str(),
+          version::date.c_str());

     opt::print();
 
     TRY {
     opt::print();
 
     TRY {


@@ -90,27 +231,59 @@ 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::enabled) {
             if (!opt::auto_depl::nhosts)
                 opt::auto_depl::nhosts = hostdata::size();

-            if (!opt::auto_depl::load)
-                opt::auto_depl::load = 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());
         }
 
             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();
         res = MSG_main();

-        INFO1("Simulation ended at %f.", MSG_get_clock());

         simulated_time = MSG_get_clock();
         simulated_time = MSG_get_clock();

+        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; // =====
     }


@@ -118,8 +291,8 @@ 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);
     }
 


@@ -127,22 +300,42 @@ 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 ]");
-        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)
     }
     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;
 }