New parameter: "-k value", to specify divisor for algorithms *best*.

[loba.git] / options.cpp

diff --git a/options.cpp b/options.cpp
index a943339eb6051560af6eba481ae1dbdb858cce4e..5ca56d74843bc17ee1e32219f9fe9edb83c06b97 100644 (file)
--- a/options.cpp
+++ b/options.cpp
@@ -66,6 +66,7 @@ namespace opt {
     double min_transfer_amount = 0.0;
     double max_transfer_amount = 0.0;
     bool integer_transfer = false;
+    unsigned loba_best_divisor = 1;
 
     // Application parameters
     cost_func comp_cost("1e9, 0");              // fixme: find better defaults
@@ -230,7 +231,7 @@ bool opt::parse_args(int* argc, char* argv[])
     int c;
     opterr = 0;
     while ((c = getopt(*argc, argv,
-                       "a:bc:C:d:D:eEhi:I:l:L:m:M:N:r:Rs:S:t:T:vVx:X:Z"))
+                       "a:bc:C:d:D:eEhi:I:k:l:L:m:M:N:r:Rs:S:t:T:vVx:X:Z"))
            != -1) {
         switch (c) {
         case 'a':
@@ -279,6 +280,9 @@ bool opt::parse_args(int* argc, char* argv[])
         case 'i':
             PARSE_ARG(opt::lb_maxiter);
             break;
+        case 'k':
+            PARSE_ARG(opt::loba_best_divisor);
+            break;
         case 'I':
             PARSE_ARG(opt::comp_maxiter);
             break;
@@ -346,6 +350,13 @@ bool opt::parse_args(int* argc, char* argv[])
 
 #undef PARSE_ARG
 
+    if (opt::option_x) {        // FIXME: remove this one day...
+        opt::loba_best_divisor = opt::option_x;
+        XBT_WARN("divisor for algorithms *best* set from option -x (%d => %u),"
+                 " use -k instead",
+                 opt::option_x, opt::loba_best_divisor);
+    }
+
     if (opt::version_requested || opt::help_requested)
         return 1;
 
@@ -367,7 +378,15 @@ bool opt::parse_args(int* argc, char* argv[])
 
     if (opt::max_transfer_amount &&
         opt::max_transfer_amount < opt::min_transfer_amount) {
-        XBT_ERROR("max. data transfer amount < min. data transfer amount");
+        XBT_ERROR("max. data transfer amount (%g) <"
+                  " min. data transfer amount (%g)",
+                  opt::max_transfer_amount, opt::min_transfer_amount);
+        result = false;
+    }
+
+    if (opt::loba_best_divisor <= 0) {
+        XBT_ERROR("divisor for algorithms *best* (%u) should be positive",
+                  opt::loba_best_divisor);
         result = false;
     }
 
@@ -398,8 +417,8 @@ void opt::print()
             DESCR("- initial load (total)", "%g", auto_depl::load);
         DESCR("- random initial load distribution", "%s",
               h.on_off(auto_depl::random_distribution));
-        DESCR("- random seed", "%s",
-              h.val_or_string(auto_depl::random_seed, "time based"));
+        DESCR("- random seed", "%s", // NOTE: cannot be 0 here anymore
+              h.val_or_string(auto_depl::random_seed, "constant random", 1UL));
     } else {
         DESCR("deployment file", "\"%s\"", deployment_file.c_str());
     }
@@ -415,6 +434,7 @@ void opt::print()
           h.val_or_string(max_transfer_amount, "no limit"));
     DESCR("only transfer integer data shares", "%s",
           h.on_off(integer_transfer));
+    DESCR("divisor for algorithms *best*", "%u", loba_best_divisor);
     DESCR("minimum duration between comp. iterations", "%g",
           min_comp_iter_duration);
     DESCR("computations start after lb. iter", "%u", comp_iter_delay);
@@ -483,8 +503,11 @@ void opt::usage()
               << " [" << opt_helper::on_off(opt::auto_depl::random_distribution)
               << "]\n";
     std::clog << o("-r value")
-              << "random seed, 0 for a seed based on current date"
+              << "random seed for initial load distribution, or 0, or 1"
               << " [" << opt::auto_depl::random_seed << "]\n";
+    if (opt::help_requested > 1)
+        std::clog << o("") << "- use 0 for a seed based on current date\n"
+                  << o("") << "- use 1 for a constant random\n";
 
     std::clog << "\nLoad balancing algorithm:\n";
     std::clog << o("-a name") << "load balancing algorithm"
@@ -498,6 +521,8 @@ void opt::usage()
     if (opt::help_requested > 1)
         std::clog << o("")
                   << "(a not so good idea introduced by git commit f5336c5)\n";
+    std::clog << o("-k value") << "divisor for algorithms *best*"
+              << " [" << opt::loba_best_divisor << "]\n";
 
     std::clog << "\nLb. and comp. iterations:\n";
     std::clog << o("-s value")