// we need to switch as the called function may silently touch global variables
smpi_switch_data_segment(simgrid::s4u::Actor::self());
}
//identify neighbours in comm
//get the indices of all processes sharing the same simix host
// we need to switch as the called function may silently touch global variables
smpi_switch_data_segment(simgrid::s4u::Actor::self());
}
//identify neighbours in comm
//get the indices of all processes sharing the same simix host