Author

Yuan Cheng

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Preprint Oct 2026

VenusRL: A Fully Disaggregated Agentic RL System with Priority Scheduling and Scalable Interaction

Agentic Reinforcement Learning (RL) trains LLM agents through multi-turn interactions with external tool environments. Its multi-turn nature exposes two system-level bottlenecks unaddressed by existing agentic RL frameworks. First, end-to-end training throughput is constrained by the slowest trajectories to complete, y...

Ming-Jun Zhang, Yu-Cheng Li, Meng-Hao Zhang et al. · 0 citations

Jul 2026

PIVOT: Efficient Query-Group Indexing for Token-Level Sparse Attention

PIVOT, Proxy Indexing Via One full-prefix Traversal, a training-free, drop-in replacement for the DSA indexer that shares one prefix scan across a group of nearby queries, matches the accuracy of the dense DSA indexer while accelerating it by up to 4x and reducing end-to-end latency by up to 1.6x at long context.

Hong Liu, Yuan Cheng, Lin Niu et al. · arXiv.org · 3 citations

Jul 2026

DualDecoder: Accelerate Long Context LLM Inference by Predictive Prefetch

DualDecoder is presented, a lightweight serving system for long-context LLM inference that enables efficient sparse KV cache retrieval from host memory that leverages a novel dual-token decoding pipeline that accurately identifies critical KV entries with negligible computational overhead.

Zuning Liang, Zhiyi Yao, Qi Chen et al. · arXiv.org · 1 citation