- simgrid::s4u::Actor::create("master", simgrid::s4u::Host::by_name("Tremblay"), master);
- simgrid::s4u::Actor::create("worker", simgrid::s4u::Host::by_name("Tremblay"), worker);
+ simgrid::s4u::Actor::create("master", e.host_by_name("Tremblay"), master);
+ simgrid::s4u::Actor::create("worker", e.host_by_name("Tremblay"), worker);