As demand grows for training reasoning-capable large language models (LLMs), Reinforcement Learning from Human Feedback (RLHF) has emerged as a cornerstone technique. However, conventional RLHF pipelines—especially those using Proximal Policy Optimization (PPO)—are often hindered by substantial computational overhead. This challenge is particularly pronounced with models that excel at complex reasoning tasks (such as OpenAI-o1 and DeepSeek-R1), where generating long chain-of-thought (CoT)...
