Distinguish lb_iter and comp_iter.

diff --git a/options.cpp b/options.cpp
index 86cec694b295ff958cffb5a12735fce664f1ba0f..fe7855980eccb390e6141e237228f3016e97c9b6 100644 (file)
--- a/options.cpp
+++ b/options.cpp
@@ -47,7 +47,8 @@ namespace opt {
     // Application parameters
     cost_func comp_cost("1e9, 0"); // fixme: find better defaults
     cost_func comm_cost("1, 0"); // fixme: find better defaults
-    unsigned maxiter = 10;       // fixme: find better defaults
+    unsigned comp_maxiter = 10;  // fixme: find better defaults
+    unsigned lb_maxiter = comp_maxiter; // fixme: find better defaults
     bool exit_on_close = false;
 
     // Named parameters lists
@@ -169,7 +170,7 @@ bool opt::parse_args(int* argc, char* argv[])
     
     int c;
     opterr = 0;
-    while ((c = getopt(*argc, argv, "a:bc:C:ehi:l:L:N:T:vV")) != -1) {
+    while ((c = getopt(*argc, argv, "a:bc:C:ehi:I:l:L:N:T:vV")) != -1) {
         switch (c) {
         case 'a':
             opt::loba_algo = optarg;
@@ -193,7 +194,12 @@ bool opt::parse_args(int* argc, char* argv[])
             opt::comm_cost = cost_func(optarg);
             break;
         case 'i':
-            std::istringstream(optarg) >> opt::maxiter;
+            std::istringstream(optarg) >> opt::comp_maxiter;
+            break;
+        case 'I':
+            std::istringstream(optarg) >> opt::lb_maxiter;
+            ERROR0("option -I not implemented yet");
+            result = false;
             break;
         case 'l':
             std::istringstream(optarg) >> opt::log_rate;
@@ -267,8 +273,10 @@ void opt::print()
     DESCR("bookkeeping", "%s",                  on_off(bookkeeping));
     DESCR("computation cost factors", "[%s]",   comp_cost.to_string().c_str());
     DESCR("communication cost factors", "[%s]", comm_cost.to_string().c_str());
-    DESCR("maximum number of iterations", "%s",
-          val_or_string(maxiter, "infinity"));
+    DESCR("maximum number of comp. iterations", "%s",
+          val_or_string(comp_maxiter, "infinity"));
+    DESCR("maximum number of lb. iterations", "%s",
+          val_or_string(lb_maxiter, "infinity"));
     DESCR("exit on close", "%s",                on_off(exit_on_close));
     INFO0("`----");
 #undef DESCR
@@ -339,8 +347,11 @@ void opt::usage()
               << " (" << opt::comm_cost.to_string() << ")\n";
     std::clog << o("-e") << "exit on reception of \"close\" message\n";
     std::clog << o("-i value")
-              << "maximum number of iterations, 0 for infinity"
-              << " (" << opt::maxiter << ")\n";
+              << "maximum number of comp. iterations, 0 for infinity"
+              << " (" << opt::comp_maxiter << ")\n";
+    std::clog << o("-I value")
+              << "maximum number of lb. iterations, 0 for infinity"
+              << " (" << opt::lb_maxiter << ")\n";
 
     if (opt::help_requested < 3)
         return;

diff --git a/options.h b/options.h
index 838dfa020233fe2820d3e8189c0c330c3daf6735..37a4d8c71159873f99b7c691cc8a5359ed768da4 100644 (file)
--- a/options.h
+++ b/options.h
@@ -40,7 +40,8 @@ namespace opt {
     // Application parameters
     extern cost_func comp_cost;
     extern cost_func comm_cost;
-    extern unsigned maxiter;
+    extern unsigned comp_maxiter;
+    extern unsigned lb_maxiter;
     extern bool exit_on_close;
 
     // Named parameters lists

diff --git a/process.cpp b/process.cpp
index 306687f2f8dd68de8d2bf82218adff88e4ff70d8..0b27f0bddae784512453174ad6a47a3d7ffeda54 100644 (file)
--- a/process.cpp
+++ b/process.cpp
@@ -75,17 +75,17 @@ int process::run()
 {
     INFO1("Initial load: %g", load);
     VERB0("Starting...");
-    iter = 0;
+    comp_iter = lb_iter = 0;
     while (true) {
         if (load > 0.0) {
-            ++iter;
-            if (opt::log_rate && iter % opt::log_rate == 0) {
+            ++comp_iter;
+            if (opt::log_rate && comp_iter % opt::log_rate == 0) {
                 if (opt::bookkeeping)
-                    INFO3("(%u) current load: %g ; expected: %g",
-                          iter, load, expected_load);
+                    INFO4("(%u:%u) current load: %g ; expected: %g",
+                          comp_iter, lb_iter, load, expected_load);
                 else
                     INFO2("(%u) current load: %g",
-                          iter, load);
+                          comp_iter, load);
             }
 
             if (opt::bookkeeping)
@@ -98,13 +98,16 @@ int process::run()
             send();
             compute();
 
-            if (opt::maxiter && iter >= opt::maxiter)
-                break;
         } else {
             // send load information, and load when bookkeeping
             send();
         }
 
+        if (opt::comp_maxiter && comp_iter >= opt::comp_maxiter)
+            break;
+        if (opt::lb_maxiter && lb_iter >= opt::lb_maxiter)
+            break;
+
         // block on receiving unless there is something to compute or
         // to send
         bool recv_wait = (load == 0 &&
@@ -123,6 +126,7 @@ int process::run()
 
         // fixme: this check should be implemented with a distributed
         // algorithm, and not a shared global variable!
+        // fixme: should this chunk be moved before call to receive() ?
         if (100.0 * total_load_running / total_load_init <=
             opt::load_ratio_threshold) {
             VERB0("No more load to balance in system, stopping.");
@@ -140,7 +144,8 @@ int process::run()
      */
 
     VERB0("Done.");
-    INFO3("Final load after %d iteration%s: %g", iter, ESSE(iter), load);
+    INFO3("Final load after %d iteration%s: %g",
+          comp_iter, ESSE(comp_iter), load);
     if (opt::bookkeeping)
         INFO1("Expected load: %g", expected_load);
     return 0;
@@ -159,7 +164,7 @@ double process::sum_of_to_send() const
 
 double process::load_balance(double /*my_load*/)
 {
-    if (iter == 1)
+    if (lb_iter == 1)           // warn only once
         WARN0("process::load_balance is a no-op!");
     return 0.0;
 }

diff --git a/process.h b/process.h
index c72fdf20e82094f4365672beb27074e25b34e8ab..654237b8b9f77f2d1050f0d88a0760a097954ac8 100644 (file)
--- a/process.h
+++ b/process.h
@@ -69,7 +69,8 @@ private:
     bool may_receive;           // true if there remains neighbors to listen for
     bool finalizing;            // true when finalize() is running
 
-    unsigned iter;              // counter of iterations
+    unsigned lb_iter;           // counter of load-balancing iterations
+    unsigned comp_iter;         // counter of computation iterations
 
     double prev_load_broadcast; // used to ensure that we do not send
                                 // a same information messages