/vllm

A high-throughput and memory-efficient inference and serving engine for LLMs

Primary LanguagePythonApache License 2.0Apache-2.0

vLLM

Easy, fast, and cheap LLM serving for everyone

| Documentation | Blog | Paper | Discord |

The Fourth vLLM Bay Area Meetup (June 11th 5:30pm-8pm PT)

We are thrilled to announce our fourth vLLM Meetup! The vLLM team will share recent updates and roadmap. We will also have vLLM collaborators from BentoML and Cloudflare coming up to the stage to discuss their experience in deploying LLMs with vLLM. Please register here and join us!

Latest News 🔥

  • [2024/04] We hosted the third vLLM meetup with Roblox! Please find the meetup slides here.
  • [2024/01] We hosted the second vLLM meetup in SF! Please find the meetup slides here.
  • [2024/01] Added ROCm 6.0 support to vLLM.
  • [2023/12] Added ROCm 5.7 support to vLLM.
  • [2023/10] We hosted the first vLLM meetup in SF! Please find the meetup slides here.
  • [2023/09] We created our Discord server! Join us to discuss vLLM and LLM serving! We will also post the latest announcements and updates there.
  • [2023/09] We released our PagedAttention paper on arXiv!
  • [2023/08] We would like to express our sincere gratitude to Andreessen Horowitz (a16z) for providing a generous grant to support the open-source development and research of vLLM.
  • [2023/07] Added support for LLaMA-2! You can run and serve 7B/13B/70B LLaMA-2s on vLLM with a single command!
  • [2023/06] Serving vLLM On any Cloud with SkyPilot. Check out a 1-click example to start the vLLM demo, and the blog post for the story behind vLLM development on the clouds.
  • [2023/06] We officially released vLLM! FastChat-vLLM integration has powered LMSYS Vicuna and Chatbot Arena since mid-April. Check out our blog post.

About

vLLM is a fast and easy-to-use library for LLM inference and serving.

vLLM is fast with:

  • State-of-the-art serving throughput
  • Efficient management of attention key and value memory with PagedAttention
  • Continuous batching of incoming requests
  • Fast model execution with CUDA/HIP graph
  • Quantization: GPTQ, AWQ, SqueezeLLM, FP8 KV Cache
  • Optimized CUDA kernels

vLLM is flexible and easy to use with:

  • Seamless integration with popular Hugging Face models
  • High-throughput serving with various decoding algorithms, including parallel sampling, beam search, and more
  • Tensor parallelism support for distributed inference
  • Streaming outputs
  • OpenAI-compatible API server
  • Support NVIDIA GPUs and AMD GPUs
  • (Experimental) Prefix caching support
  • (Experimental) Multi-lora support

vLLM seamlessly supports most popular open-source models on HuggingFace, including:

  • Transformer-like LLMs (e.g., Llama)
  • Mixture-of-Expert LLMs (e.g., Mixtral)
  • Multi-modal LLMs (e.g., LLaVA)

Find the full list of supported models here.

Getting Started

Install vLLM with pip or from source:

pip install vllm

Visit our documentation to learn more.

Contributing

We welcome and value any contributions and collaborations. Please check out CONTRIBUTING.md for how to get involved.

Sponsors

vLLM is a community project. Our compute resources for development and testing are supported by the following organizations. Thank you for your support!

  • a16z
  • AMD
  • Anyscale
  • AWS
  • Crusoe Cloud
  • Databricks
  • DeepInfra
  • Lambda Lab
  • NVIDIA
  • Replicate
  • Roblox
  • RunPod
  • Trainy
  • UC Berkeley
  • UC San Diego

We also have an official fundraising venue through OpenCollective. We plan to use the fund to support the development, maintenance, and adoption of vLLM.

Citation

If you use vLLM for your research, please cite our paper:

@inproceedings{kwon2023efficient,
  title={Efficient Memory Management for Large Language Model Serving with PagedAttention},
  author={Woosuk Kwon and Zhuohan Li and Siyuan Zhuang and Ying Sheng and Lianmin Zheng and Cody Hao Yu and Joseph E. Gonzalez and Hao Zhang and Ion Stoica},
  booktitle={Proceedings of the ACM SIGOPS 29th Symposium on Operating Systems Principles},
  year={2023}
}