ray-project--ray/python/ray/llm/examples/sglang/readme.md

SGLang on Ray Serve LLM

This directory contains example scripts for using SGLang with Ray Serve LLM.

Examples

File	Description
serve_sglang_example.py	Single-node SGLang serving with autoscaling
serve_sglang_multinode_example.py	Multi-node serving with tensor and pipeline parallelism
batch_sglang_example.py	Batch inference using Ray Data
query_example.py	OpenAI client for querying a running deployment

Prerequisites

pip install ray[serve,llm] "sglang[all,ray]"

Set the environment variable before running:

• CUDA: RAY_EXPERIMENTAL_NOSET_CUDA_VISIBLE_DEVICES=0
• ROCm: RAY_EXPERIMENTAL_NOSET_HIP_VISIBLE_DEVICES=0

Engine implementation

The SGLangServer class is located at ray.llm._internal.serve.engines.sglang and wraps SGLang's in-process engine with the Ray Serve LLM server protocol.