Document a bug with parallel executions.

[loba.git] / process.cpp

diff --git a/process.cpp b/process.cpp
index e6c7bc23ffe137c18644d6a163b648cf81e2b07b..c85b6051a6a4224452f22ddce086740f310ed61e 100644 (file)
--- a/process.cpp
+++ b/process.cpp
@@ -121,6 +121,21 @@ process::~process()
     print_loads(true, xbt_log_priority_debug);
 }
 
+double process::get_iter_deviation() const
+{
+    double average_cost = opt::comp_cost(total_load_average);
+    // Do not count idle periods
+    double comp_iter_opt = acc.comp_amount / average_cost;
+/*
+    // Add iterations that could have been achieved while beeing idle
+    // (kept for documentation)
+    double self_speed = MSG_get_host_speed(MSG_host_self());
+    double average_duration = average_cost / self_speed;
+    comp_iter_opt += idle_duration / average_duration;
+*/
+    return comp_iter - comp_iter_opt;
+}
+
 int process::run()
 {
     if (opt::log_rate >= 0) {
@@ -205,25 +220,23 @@ void process::compute_loop()
     double next_iter_after_date = MSG_get_clock() + opt::min_comp_iter_duration;
     double idle_since_date = 0.0;
     while (still_running()) {
+        // receive
+        // if there is something to compute, do not block
+        // else, block the duration of an *lb* iteration
+        data_receive(real_load > 0.0 ? 0.0 : opt::min_lb_iter_duration);
 
-        do {
-            // receive
-            // if there is something to compute, do not block
-            // else, block the duration of an *lb* iteration
-            data_receive(real_load > 0.0 ? 0.0 : opt::min_lb_iter_duration);
-
-            // send
-            comm.data_flush(false);
-            mutex.acquire();
-            real_load += received_load;
-            received_load = 0.0;
-            std::for_each(neigh.begin(), neigh.end(),
-                          std::bind(&process::data_send, this, _1));
-            mutex.release();
-
-            ++all_comp_iter;
+        // send
+        comm.data_flush(false);
+        mutex.acquire();
+        real_load += received_load;
+        received_load = 0.0;
+        std::for_each(neigh.begin(), neigh.end(),
+                      std::bind(&process::data_send, this, _1));
+        mutex.release();
 
-        } while (real_load == 0.0);
+        ++all_comp_iter;
+        if (real_load == 0.0)
+            continue;
 
         convergence_check();