Reunion: Receiver-driven network load balancing mechanism in AI training clusters. - Mingyao Wang; Keqiang He; Peirui Cao; Jiong Duan; Dongliang Lv; Zehao Yu; Yanqing Chen; Chengyuan Huang; Wanchun Dou; Guihai Chen; Chen Tian 001 (Comput. Networks, 2025)