ECHO-2: A Large-Scale Distributed Rollout Framework for Cost-Efficient Reinforcement Learning

arXiv:2602.02192 · cs.LG, cs.DC · Submitted 2026-02-02 · Read on arXiv

cs.LG, cs.DC

Submitted: 2026-02-02

Updated: 2026-09-29

Terminology

• Reinforcement Learning — 2× in this paper · explained in 4 episodes
• GRPO — 1× in this paper · explained in 6 episodes
• Large Language Models (LLMs) — 1× in this paper · explained in 6 episodes
• Reinforcement Learning (RL) — 1× in this paper · explained in 25 episodes

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