We recommend new contributors start from writing documentation, which helps you quickly understand SGLang codebase. Most documentation files are located under the docs/
folder. We prefer Jupyter Notebooks over Markdown so that all examples can be executed and validated by our docs CI pipeline.
pip install -r requirements.txt
Update your Jupyter notebooks in the appropriate subdirectories under docs/
. If you add new files, remember to update index.rst
(or relevant .rst
files) accordingly.
pre-commit run --all-files
manually runs all configured checks, applying fixes if possible. If it fails the first time, re-run it to ensure lint errors are fully resolved. Make sure your code passes all checks before creating a Pull Request.- Do not commit directly to the
main
branch. Always create a new branch (e.g.,feature/my-new-feature
), push your changes, and open a PR from that branch.
# 1) Compile all Jupyter notebooks
make compile
# 2) Generate static HTML
make html
# 3) Preview documentation locally
# Open your browser at the displayed port to view the docs
bash serve.sh
# 4) Clean notebook outputs
# nbstripout removes notebook outputs so your PR stays clean
pip install nbstripout
find . -name '*.ipynb' -exec nbstripout {} \;
# 5) Pre-commit checks and create a PR
# After these checks pass, push your changes and open a PR on your branch
pre-commit run --all-files
If you need to run and shut down a SGLang server or engine, following these examples:
- Launch and close Sever:
#Launch Sever
from sglang.utils import (
execute_shell_command,
wait_for_server,
terminate_process,
print_highlight,
)
server_process = execute_shell_command(
"python -m sglang.launch_server --model-path meta-llama/Meta-Llama-3.1-8B-Instruct --port 30000 --host 0.0.0.0"
)
wait_for_server("http://localhost:30000")
# Terminate Sever
terminate_process(server_process)
- Launch Engine and close Engine
# Launch Engine
import sglang as sgl
import asyncio
llm = sgl.Engine(model_path="meta-llama/Meta-Llama-3.1-8B-Instruct")
# Terminalte Engine
llm.shutdown()