Fast-dLLM: Training-free Acceleration of Diffusion LLM by Enabling KV Cache and Parallel Decoding - Wu, Chengyue; Zhang, Hao; Xue, Shuchen; Liu, Zhijian; Diao, Shizhe; Zhu, Ligeng; Luo, Ping; Han, Song; Xie, Enze (International Conference on Learning Representations, 2026)