tmgr_trace_t trace = traces_set_list.at(elm.first);
sg_link_t link = simgrid::s4u::Link::by_name(elm.second.c_str());
xbt_assert(link, "Link %s undefined", elm.second.c_str());
tmgr_trace_t trace = traces_set_list.at(elm.first);
sg_link_t link = simgrid::s4u::Link::by_name(elm.second.c_str());
xbt_assert(link, "Link %s undefined", elm.second.c_str());