Document a bug with parallel executions.

[loba.git] / process.h

diff --git a/process.h b/process.h
index 57ece07203d300e2d264d8096c3958d654e34439..c31d21345ab6c05993b7be8bab5cff20ea4e1f8e 100644 (file)
--- a/process.h
+++ b/process.h
@@ -34,6 +34,9 @@ public:
 
     double get_real_load() const           { return real_load;            }
     double get_comp_amount() const         { return acc.comp_amount;      }
+    unsigned get_comp_iter() const         { return comp_iter;            }
+    unsigned get_all_comp_iter() const     { return all_comp_iter;        }
+    double get_iter_deviation() const;
     double get_data_send_amount() const    { return acc.data_send.amount; }
     double get_data_recv_amount() const    { return acc.data_recv.amount; }
     unsigned get_data_send_count() const   { return acc.data_send.count;  }
@@ -42,6 +45,8 @@ public:
     double get_ctrl_recv_amount() const    { return acc.ctrl_recv.amount; }
     unsigned get_ctrl_send_count() const   { return acc.ctrl_send.count;  }
     unsigned get_ctrl_recv_count() const   { return acc.ctrl_recv.count;  }
+    double get_idle_duration() const       { return idle_duration;        }
+    double get_convergence() const         { return convergence;          }
 
     int run();
 
@@ -82,6 +87,10 @@ private:
     static double total_load_running; // sum of loads while running
     static double total_load_exit; // sum of process loads at exit
 
+    static int process_counter;
+    static double total_load_average;
+    static double load_diff_threshold;
+
     typedef MAP_TEMPLATE<m_host_t, neighbor*> rev_neigh_type;
     neigh_type neigh;           // list of neighbors (do not alter
                                 // after construction!)
@@ -97,6 +106,8 @@ private:
 
     unsigned lb_iter;           // counter of load-balancing iterations
     unsigned comp_iter;         // counter of computation iterations
+    unsigned all_comp_iter;     // counter of computation iterations
+                                // (counting empty iterations too)
 
     double prev_load_broadcast; // used to ensure that we do not send
                                 // a same information messages
@@ -104,6 +115,9 @@ private:
     double expected_load;       // expected load in bookkeeping mode
     double received_load;       // load received from neighbors
 
+    double idle_duration;       // how long we had nothing to compute
+    double convergence;         // date when convergence was achieved, or -1.0
+
     mutex_t mutex;              // synchronization between threads
     condition_t cond;
 
@@ -120,7 +134,9 @@ private:
         mesg_accounting ctrl_recv; // ctrl message received
         accounting(): comp_amount(0.0) { }
     };
-    accounting acc;
+    accounting acc;             // use a structure so that it is
+                                // automatically initialized a
+                                // construction
 
     void add_comp_amount(double amount) { acc.comp_amount += amount; }
     void add_data_send_mesg(double amount) {
@@ -147,12 +163,18 @@ private:
     // Simulate computation loop
     void compute_loop();
 
+    // Check for convergence
+    void convergence_check();
+
     // Check if we need to stop
     bool still_running();
 
     // Returns the sum of "to_send" for all neighbors.
     double get_sum_of_to_send() const;
 
+    // Compute load_to_send (for data_send), subject to the execution parameters
+    static double compute_load_to_send(double desired);
+
     // Send procedures
     void ctrl_send(neighbor& nb);
     void data_send(neighbor& nb);