From their Twitter:

    Introducing checkpoint-engine: our open-source, lightweight middleware for efficient, in-place weight updates in LLM inference engines, especially effective for RL.

    [x] Update a 1T model on thousands of GPUs in ~20s

    [x] Supports both broadcast (sync) & P2P (dynamic) updates

    [x] Optimized pipeline with overlapped communication and copy

    [x] Lightweight & flexible for large-scale deployment

    Check out our work on GitHub: https://github.com/MoonshotAI/checkpoint-engine