vLLM Ascend Plugin

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Latest News 🔥

• [2025/03] We hosted the vLLM Beijing Meetup with vLLM team! Please find the meetup slides here.
• [2025/02] vLLM community officially created vllm-project/vllm-ascend repo for running vLLM seamlessly on the Ascend NPU.
• [2024/12] We are working with the vLLM community to support [RFC]: Hardware pluggable.

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Overview

vLLM Ascend (vllm-ascend) is a community maintained hardware plugin for running vLLM seamlessly on the Ascend NPU.

It is the recommended approach for supporting the Ascend backend within the vLLM community. It adheres to the principles outlined in the [RFC]: Hardware pluggable, providing a hardware-pluggable interface that decouples the integration of the Ascend NPU with vLLM.

By using vLLM Ascend plugin, popular open-source models, including Transformer-like, Mixture-of-Expert, Embedding, Multi-modal LLMs can run seamlessly on the Ascend NPU.

Prerequisites

• Hardware: Atlas 800I A2 Inference series, Atlas A2 Training series
• OS: Linux
• Software:
  • Python >= 3.9
  • CANN >= 8.0.0
  • PyTorch >= 2.5.1, torch-npu >= 2.5.1.dev20250320
  • vLLM (the same version as vllm-ascend)

Getting Started

Please refer to QuickStart and Installation for more details.

Contributing

See CONTRIBUTING for more details, which is a step-by-step guide to help you set up development environment, build and test.

We welcome and value any contributions and collaborations:

• Please let us know if you encounter a bug by filing an issue
• Please use User forum for usage questions and help.

Branch

vllm-ascend has main branch and dev branch.

• main: main branch，corresponds to the vLLM main branch, and is continuously monitored for quality through Ascend CI.
• vX.Y.Z-dev: development branch, created with part of new releases of vLLM. For example, v0.7.3-dev is the dev branch for vLLM v0.7.3 version.

Below is maintained branches:

Branch	Status	Note
main	Maintained	CI commitment for vLLM main branch
v0.7.1-dev	Unmaintained	Only doc fixed is allowed
v0.7.3-dev	Maintained	CI commitment for vLLM 0.7.3 version

Please refer to Versioning policy for more details.

Weekly Meeting

• vLLM Ascend Weekly Meeting: https://tinyurl.com/vllm-ascend-meeting
• Wednesday, 15:00 - 16:00 (UTC+8, Convert to your timezone)

License

Apache License 2.0, as found in the LICENSE file.