From: Arnaud Giersch <arnaud.giersch@iut-bm.univ-fcomte.fr>
Date: Wed, 29 Feb 2012 16:37:13 +0000 (+0100)
Subject: Add possibility to set the convergence threshold automatically.
X-Git-Tag: exp_20120229~4
X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/loba.git/commitdiff_plain/6327e2032096180078429253034afecb48208abd?ds=inline;hp=245565c060611ddfed5067ab4000e91e440c402c

Add possibility to set the convergence threshold automatically.
---

diff --git a/options.cpp b/options.cpp
index 2db9aeb..21f9b9b 100644
--- a/options.cpp
+++ b/options.cpp
@@ -569,6 +569,9 @@ void opt::usage()
     std::clog << o("-% value")
               << "percent of the load average to assume the convergence"
               << " [" << opt::avg_load_ratio << "]\n";
+    if (opt::help_requested > 1)
+        std::clog << o("")
+                  << "or, if negative, 100 * (nhosts / -value) / avg_load\n";
     std::clog << o("-G") << "toggle exit on detection of convergence"
               << " [" << opt_helper::on_off(opt::exit_on_convergence) << "]\n";
     std::clog << o("-t value")
diff --git a/process.cpp b/process.cpp
index dfbf123..01b5e0f 100644
--- a/process.cpp
+++ b/process.cpp
@@ -24,6 +24,7 @@ double process::total_load_exit = 0.0;
 
 int process::process_counter = 0;
 double process::total_load_average;
+double process::average_load_ratio;
 double process::load_diff_threshold;
 
 std::atomic<int> process::convergence_counter(0);
@@ -75,8 +76,13 @@ process::process(int argc, char* argv[])
     total_load_init += real_load;
     total_load_running += real_load;
     total_load_average = total_load_running / process_counter;
+    if (opt::avg_load_ratio >= 0.0)
+        average_load_ratio = opt::avg_load_ratio;
+    else
+        average_load_ratio = 100.0 *
+            (process_counter / -opt::avg_load_ratio) / total_load_average;
     load_diff_threshold = (opt::load_ratio_threshold +
-                           opt::avg_load_ratio * total_load_average) / 100.0;
+                           average_load_ratio * total_load_average) / 100.0;
     proc_mutex->release();
 
     ctrl_close_pending = data_close_pending = neigh.size();
@@ -118,10 +124,10 @@ process::~process()
              lb_iter, comp_iter, all_comp_iter, real_load);
     if (convergence >= 0.0)
         XBT_INFO("Convergence within %g%% was achieved at time %g",
-                 opt::avg_load_ratio, convergence);
+                 average_load_ratio, convergence);
     else
         XBT_INFO("Convergence within %g%% was not achieved",
-                 opt::avg_load_ratio);
+                 average_load_ratio);
     XBT_VERB("Expected load was: %g", expected_load);
     XBT_VERB("Total computation for this process: %g", get_comp_amount());
     print_loads(true, xbt_log_priority_debug);
diff --git a/process.h b/process.h
index 5e1faa6..aa9ebcb 100644
--- a/process.h
+++ b/process.h
@@ -97,6 +97,7 @@ private:
 
     static int process_counter;
     static double total_load_average;
+    static double average_load_ratio;
     static double load_diff_threshold;
 
     static std::atomic<int> convergence_counter;