/* create each leaf in the Fat-Tree, return a pair composed of: <object (host, zone), gateway> */
static std::pair<simgrid::kernel::routing::NetPoint*, simgrid::kernel::routing::NetPoint*>
/* create each leaf in the Fat-Tree, return a pair composed of: <object (host, zone), gateway> */
static std::pair<simgrid::kernel::routing::NetPoint*, simgrid::kernel::routing::NetPoint*>