From: navarro <navarro@caraja.(none)>
Date: Thu, 3 May 2012 17:15:46 +0000 (+0200)
Subject: A priori, no need to propagate modifications when the variable has no impact on the... 
X-Git-Tag: v3_7~28
X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/commitdiff_plain/ba4c17319eb812cee7e2e9b3de8c60580d37e616?hp=e40d6a00466192d5337c519d86ac4c8bebb905e6

A priori, no need to propagate modifications when the variable has no impact on the constraint.
---

diff --git a/src/surf/maxmin.c b/src/surf/maxmin.c
index 047004309e..743bd013cf 100644
--- a/src/surf/maxmin.c
+++ b/src/surf/maxmin.c
@@ -267,11 +267,14 @@ void lmm_expand(lmm_system_t sys, lmm_constraint_t cnst,
     xbt_swag_insert_at_head(elem, &(elem->constraint->element_set));
   else
     xbt_swag_insert_at_tail(elem, &(elem->constraint->element_set));
-
-  make_constraint_active(sys, cnst);
-  lmm_update_modified_set(sys, cnst);
-  if (var->cnsts_number > 1)
-    lmm_update_modified_set(sys, var->cnsts[0].constraint);
+  if(!sys->selective_update_active) {
+    make_constraint_active(sys, cnst);
+  } else if(elem->value>0 || var->weight >0) {
+    make_constraint_active(sys, cnst);
+    lmm_update_modified_set(sys, cnst);
+    if (var->cnsts_number > 1)
+      lmm_update_modified_set(sys, var->cnsts[0].constraint);
+  }
 }
 
 void lmm_expand_add(lmm_system_t sys, lmm_constraint_t cnst,