// move atoms to new processors

  // enforce PBC before in case atoms are outside box

  // use comm::irregular() since atoms could have moved long distances

  if (domain->triclinic) domain->x2lamda(atom->nlocal);

  domain->pbc();

  domain->reset_box();

  comm->setup();

  comm->exchange();

  comm->irregular();

  if (domain->triclinic) domain->lamda2x(atom->nlocal);

  // check if any atoms were lost