void set_mapping(s4u::Actor* actor, int rank);
int rank(int index);
s4u::Actor* actor(int rank);
- std::string name() const {return std::string("MPI_Group");}
+ std::string name() const override {return std::string("MPI_Group");}
int rank(s4u::Actor* process);
void ref();
static void unref(MPI_Group group);