Rollout-Training Co-Design for Efficient LLM-Based Multi-Agent Reinforcement Learning. - Zhida Jiang; Zhaolong Xing; Jiawei Lu; Yipei Niu; Qingyuan Sang; Liangxu Zhang; Wenquan Dai; Junhua Shu; Jiaxing Wang; Qiangyu Pei; Qiong Chen; Xinyu Liu; et al. (CoRR, 2026)