This model can't handle 0 sized msg with 0 computation

Tell users to use ptask_L07 for this
Should address https://github.com/simgrid/simgrid/issues/87

diff --git a/src/surf/HostImpl.cpp b/src/surf/HostImpl.cpp
index c19465c..24411bc 100644 (file)
--- a/src/surf/HostImpl.cpp
+++ b/src/surf/HostImpl.cpp
@@ -108,6 +108,8 @@ Action *HostModel::executeParallelTask(int host_nb,
     THROW_UNIMPLEMENTED;      /* This model does not implement parallel tasks for more than 2 hosts */
 #undef cost_or_zero
   xbt_free(host_list);
+  if(action==nullptr)
+    xbt_die("This model doesn't support tasks with 0 comm and 0 computation, please use ptak_L07 instead");
   return action;
 }