X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/7c047878cb2905079a6a0544f1a15134ae3ab3a6..30aca4d4af004d1ec899d12f0a9fe3997e9be15e:/src/surf/maxmin.cpp

diff --git a/src/surf/maxmin.cpp b/src/surf/maxmin.cpp
index 05da40302c..623a3b28f5 100644
--- a/src/surf/maxmin.cpp
+++ b/src/surf/maxmin.cpp
@@ -24,8 +24,9 @@ typedef struct s_dyn_light {
 
 double sg_maxmin_precision = 0.00001;
 double sg_surf_precision   = 0.00001;
+int    sg_concurrency_limit= 100;
 
-static void *lmm_variable_mallocator_new_f(void);
+static void *lmm_variable_mallocator_new_f();
 static void lmm_variable_mallocator_free_f(void *var);
 #define lmm_variable_mallocator_reset_f ((void_f_pvoid_t)nullptr)
 static void lmm_update_modified_set(lmm_system_t sys, lmm_constraint_t cnst);
@@ -73,7 +74,7 @@ inline void lmm_increase_concurrency(lmm_element_t elem) {
              "Concurrency limit overflow!");
 }
 
-lmm_system_t lmm_system_new(int selective_update)
+lmm_system_t lmm_system_new(bool selective_update)
 {
   lmm_system_t l = nullptr;
   s_lmm_variable_t var;
@@ -101,6 +102,8 @@ lmm_system_t lmm_system_new(int selective_update)
                                               lmm_variable_mallocator_free_f,
                                               lmm_variable_mallocator_reset_f);
 
+  l->solve_fun = &lmm_solve;
+
   return l;
 }
 
@@ -195,8 +198,7 @@ lmm_constraint_t lmm_constraint_new(lmm_system_t sys, void *id, double bound_val
   cnst->bound = bound_value;
   cnst->concurrency_maximum=0;
   cnst->concurrency_current=0;
-  //TODO MARTIN Maybe a configuration item for the default cap concurrency? 
-  cnst->concurrency_limit=100;
+  cnst->concurrency_limit=sg_concurrency_limit;
   cnst->usage = 0;
   cnst->sharing_policy = 1; /* FIXME: don't hardcode the value */
   insert_constraint(sys, cnst);
@@ -254,7 +256,7 @@ inline void lmm_constraint_free(lmm_system_t sys,lmm_constraint_t cnst)
   lmm_cnst_free(sys, cnst);
 }
 
-static void *lmm_variable_mallocator_new_f(void)
+static void *lmm_variable_mallocator_new_f()
 {
   lmm_variable_t var = xbt_new(s_lmm_variable_t, 1);
   var->cnsts = nullptr; /* will be created by realloc */
@@ -1220,25 +1222,28 @@ static void lmm_remove_all_modified_set(lmm_system_t sys)
 }
 
 /**
- *  Returns total resource load
+ *  Returns resource load (in flop per second, or byte per second, or similar)
  *
- * \param cnst the lmm_constraint_t associated to the resource
+ *  If the resource is shared (the default case), the load is sum of
+ *  resource usage made by every variables located on this resource.
  *
- * This is dead code, but we may use it later for debug/trace.
+ * If the resource is not shared (ie in FATPIPE mode), then the the
+ * load is the max (not the sum) of all resource usages located on this resource.
+ * .
+ * \param cnst the lmm_constraint_t associated to the resource
  */
 double lmm_constraint_get_usage(lmm_constraint_t cnst) {
    double usage = 0.0;
    xbt_swag_t elem_list = &(cnst->enabled_element_set);
    void *_elem;
-   lmm_element_t elem = nullptr;
 
    xbt_swag_foreach(_elem, elem_list) {
-   elem = (lmm_element_t)_elem;
-     if ((elem->value > 0)) {
+     lmm_element_t elem = (lmm_element_t)_elem;
+     if (elem->value > 0) {
        if (cnst->sharing_policy)
          usage += elem->value * elem->variable->value;
        else if (usage < elem->value * elem->variable->value)
-         usage = elem->value * elem->variable->value;
+         usage = std::max(usage, elem->value * elem->variable->value);
      }
    }
   return usage;