In compute_loop(), wait the duration of an *lb* iteration if there is nothing to do.

[loba.git] / main.cpp

diff --git a/main.cpp b/main.cpp
index a11ef4aff243cc1504cfc5cb644ded7d7c751a9a..c37355396cc93b135aa8d9bbfb4725fb76dc7b99 100644 (file)
--- a/main.cpp
+++ b/main.cpp
@@ -61,6 +61,7 @@ namespace {
     statistics ctrl_recv_amount;
     statistics ctrl_send_count;
     statistics ctrl_recv_count;
+    statistics convergence;
 
 }
 
@@ -90,6 +91,9 @@ static int simulation_main(int argc, char* argv[])
         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());
+        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
@@ -319,6 +323,7 @@ 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);
@@ -336,6 +341,23 @@ int main(int argc, char* argv[])
         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());
+        XBT_INFO("`----");
+
     }
     if (exit_status)
         XBT_ERROR("Simulation failed (%#x).", exit_status);