Enforce integer initial load when integer transfers are activated.

[loba.git] / main.cpp

diff --git a/main.cpp b/main.cpp
index a88378daa584a7321a48f71e4c7f0ad8b812dfe1..80a43d9995e722978443b108cba4c1c1480b1167 100644 (file)
--- a/main.cpp
+++ b/main.cpp
@@ -1,7 +1,7 @@
 #include <cerrno>
+#include <csignal>
 #include <cstring>              // strchr
 #include <iostream>
-#include <signal.h>
 #include <stdexcept>
 #include <msg/msg.h>
 #include <xbt/log.h>
@@ -38,7 +38,9 @@ namespace {
         EXIT_FAILURE_INIT  = 0x02,  // failed to initialize simulator
         EXIT_FAILURE_SIMU  = 0x04,  // simulation failed
         EXIT_FAILURE_CLEAN = 0x08,  // error at cleanup
-        EXIT_FAILURE_OTHER = 0x10,  // other error
+        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...
@@ -106,32 +108,38 @@ static int simulation_main(int argc, char* argv[])
     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)
+    if (lost_ratio < -opt::load_ratio_threshold) {
         XBT_ERROR("Gained load at exit! %g (%g%%) <============",
                   -lost, -lost_ratio);
-    else if (lost_ratio > opt::load_ratio_threshold)
+        res = false;
+    } else if (lost_ratio > opt::load_ratio_threshold) {
         XBT_ERROR("Lost load at exit! %g (%g%%) <============",
                   lost, lost_ratio);
-    else
+        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)
+    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)
+        res = false;
+    } else if (running_ratio > opt::load_ratio_threshold) {
         XBT_ERROR("Remaining running load at exit! %g (%g%%) <============",
                   total_running, running_ratio);
-    else
+        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*/)
@@ -140,7 +148,12 @@ static void signal_handler(int /*sig*/)
         XBT_CRITICAL(">>>>>>>>>>"
                      " caught CTRL-C: global exit requested "
                      "<<<<<<<<<<");
-        opt::exit_request = true;
+        opt::exit_request = 1;
+    } else {
+        XBT_CRITICAL(">>>>>>>>>>"
+                     " caught CTRL-C for the 2nd time: exit immediately "
+                     "<<<<<<<<<<");
+        exit(EXIT_FAILURE_INTR);
     }
 }
 
@@ -150,7 +163,7 @@ static void install_signal_handler()
     action.sa_handler = signal_handler;
     sigemptyset(&action.sa_mask);
     action.sa_flags = SA_RESTART;
-    if (sigaction (SIGINT, &action, NULL) == -1) {
+    if (sigaction(SIGINT, &action, NULL) == -1) {
         std::cerr << "sigaction: " << strerror(errno) << "\n";
         exit(EXIT_FAILURE_OTHER);
     }
@@ -221,6 +234,7 @@ int main(int argc, char* argv[])
         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)
@@ -230,8 +244,19 @@ int main(int argc, char* argv[])
                          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;
+            double iload = 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());
@@ -282,7 +307,8 @@ int main(int argc, char* argv[])
     if (simulated_time >= 0.0) {
         simulation_time.stop();
         elapsed_time.stop();
-        check_for_lost_load();
+        if (!check_for_lost_load())
+            exit_status |= EXIT_FAILURE_LOAD;
         XBT_INFO(",----[ Results ]");
         PR_STATS("Load", loads);
         PR_STATS("Computation", comps);