vllm-project--vllm-omni/docs/getting_started/installation/gpu/cuda.inc.md

--8<-- [start:requirements]

• GPU: compute capability 7.0 or higher (e.g., V100, T4, RTX20xx, A100, L4, H100, etc.)

--8<-- [end:requirements]

--8<-- [start:set-up-using-python]

vLLM-Omni depends vLLM. So please follow instructions below mainly for vLLM.

!!! note PyTorch installed via conda will statically link NCCL library, which can cause issues when vLLM tries to use NCCL. See gh-issue:8420 for more details.

In order to be performant, vLLM has to compile many cuda kernels. The compilation unfortunately introduces binary incompatibility with other CUDA versions and PyTorch versions, even for the same PyTorch version with different building configurations.

Therefore, it is recommended to install vLLM and vLLM-Omni with a fresh new environment. If either you have a different CUDA version or you want to use an existing PyTorch installation, you need to build vLLM from source. See build-from-source-vllm for more details.

--8<-- [start:pre-built-wheels]

Installation of vLLM

vLLM-Omni is built based on vLLM. Please install it with command below.

uv pip install vllm==0.25.0 --torch-backend=auto

Installation of vLLM-Omni

uv pip install vllm-omni

To run Gradio demos, also install the optional extras:

uv pip install 'vllm-omni[demo]'

--8<-- [end:pre-built-wheels]

--8<-- [start:build-wheel-from-source]

Installation of vLLM

If you do not need to modify source code of vLLM, you can directly install the stable 0.25.0 release version of the library

uv pip install vllm==0.25.0 --torch-backend=auto

The 0.25.0 release of vLLM ships CUDA 13.0-compatible binaries by default. If you need a different CUDA variant or want to reuse an existing PyTorch installation, build vLLM from source instead.

Installation of vLLM-Omni

Since vllm-omni is rapidly evolving, it's recommended to install it from source

git clone https://github.com/vllm-project/vllm-omni.git
cd vllm-omni
uv pip install -e .

To run Gradio demos, install with optional extras:

uv pip install -e '.[demo]'

(Optional) Installation of vLLM from source

If you want to check, modify or debug with source code of vLLM, install the library from source with the following instructions:

git clone https://github.com/vllm-project/vllm.git
cd vllm
git checkout v0.25.0

Set up environment variables to get pre-built wheels. If there are internet problems, just download the whl file manually. And set VLLM_PRECOMPILED_WHEEL_LOCATION as your local absolute path of whl file.

#For CUDA 13.0 (the default for v0.25.0; the wheel filename has no `+cu130` suffix)
export VLLM_PRECOMPILED_WHEEL_LOCATION=https://github.com/vllm-project/vllm/releases/download/v0.25.0/vllm-0.25.0-cp38-abi3-manylinux_2_28_x86_64.whl

Install vllm with command below (If you have no existing PyTorch).

uv pip install --editable .

Install vllm with command below (If you already have PyTorch).

python use_existing_torch.py
uv pip install -r requirements/build/cuda.txt
uv pip install --no-build-isolation --editable .

--8<-- [end:build-wheel-from-source]

--8<-- [start:build-wheel-from-source-in-docker]

--8<-- [end:build-wheel-from-source-in-docker]

--8<-- [start:pre-built-images]

vLLM-Omni offers an official docker image for deployment. These images are built on top of vLLM docker images and available on Docker Hub as vllm/vllm-omni. The version of vLLM-Omni indicates which release of vLLM it is based on.

Here's an example deployment command that has been verified on 2 x H100's:

docker run --runtime nvidia --gpus 2 \
    -v ~/.cache/huggingface:/root/.cache/huggingface \
    --env "HF_TOKEN=$HF_TOKEN" \
    -p 8091:8091 \
    --ipc=host \
    vllm/vllm-omni:v0.25.0 \
    vllm serve Qwen/Qwen3-Omni-30B-A3B-Instruct --omni --port 8091

!!! tip The CUDA image does not define a default entrypoint, so include vllm serve ... --omni after the image name.

--8<-- [end:pre-built-images]

--8<-- [start:build-docker]

Build docker image

DOCKER_BUILDKIT=1 docker build -f docker/Dockerfile.cuda -t vllm-omni-cuda .

If you want to specify the base vLLM version:

DOCKER_BUILDKIT=1 docker build \
  -f docker/Dockerfile.cuda \
  --build-arg BASE_IMAGE=vllm/vllm-openai:v0.22.1 \
  -t vllm-omni-cuda .

Launch the docker image

Launch with OpenAI API Server

!!! note The model Qwen/Qwen3-Omni-30B-A3B-Instruct requires significant GPU memory. The example below has been verified on 2 x H100's.

docker run --runtime nvidia --gpus 2 \
  -v ${HF_HOME:-$HOME/.cache/huggingface}:/root/.cache/huggingface \
  --env "HF_TOKEN=$HF_TOKEN" \
  -p 8091:8091 \
  --ipc=host \
  vllm-omni-cuda \
  vllm serve --omni --model Qwen/Qwen3-Omni-30B-A3B-Instruct --port 8091

By default, this mounts $HOME/.cache/huggingface as the model cache directory. To use a custom location, set the HF_HOME environment variable before running the command (e.g., export HF_HOME=/data/models).

Launch with interactive session for development

docker run --runtime nvidia --gpus all -it --rm \
  -v ${HF_HOME:-$HOME/.cache/huggingface}:/root/.cache/huggingface \
  --env "HF_TOKEN=$HF_TOKEN" \
  -p 8091:8091 \
  --ipc=host \
  --entrypoint bash \
  vllm-omni-cuda

--8<-- [end:build-docker]