if (TRACE_smpi_is_grouped()) {
father = simgrid::instr::Container::by_name_or_null(host->get_name());
xbt_assert(father != nullptr, "Could not find a parent for mpi rank 'rank-%d' at function %s", rank, __func__);
if (TRACE_smpi_is_grouped()) {
father = simgrid::instr::Container::by_name_or_null(host->get_name());
xbt_assert(father != nullptr, "Could not find a parent for mpi rank 'rank-%d' at function %s", rank, __func__);