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Docker下使用llama.cpp部署带Function calling和Json Mode功能的Mistral 7B模型
说明：
- 首次发表日期：2024-08-27
- 参考：
- https://www.markhneedham.com/blog/2024/06/23/mistral-7b-function-calling-llama-cpp/
- https://github.com/abetlen/llama-cpp-python?tab=readme-ov-file#function-calling
- https://github.com/abetlen/llama-cpp-python/tree/main/docker#cuda_simple
- https://docs.mistral.ai/capabilities/json_mode/
- https://huggingface.co/MaziyarPanahi/Mistral-7B-Instruct-v0.3-GGUF
- https://stackoverflow.com/questions/30905674/newer-versions-of-docker-have-cap-add-what-caps-can-be-added
- https://man7.org/linux/man-pages/man7/capabilities.7.html
- https://docs.docker.com/engine/containers/run/#runtime-privilege-and-linux-capabilities
- https://docs.nvidia.com/datacenter/cloud-native/container-toolkit/latest/install-guide.html
- https://www.cnblogs.com/davis12/p/14453690.html
下载GGUF模型
使用HuggingFace的镜像 https://hf-mirror.com/
方式一：
pip install -U huggingface_hub
export HF_ENDPOINT=https://hf-mirror.comhuggingface-cli download --resume-download MaziyarPanahi/Mistral-7B-Instruct-v0.3-GGUF --include *Q4_K_M.gguf
方式二（推荐）：
sudo apt update
sudo apt install aria2 git-lfswget https://hf-mirror.com/hfd/hfd.shchmod a+x hfd.sh./hfd.sh MaziyarPanahi/Mistral-7B-Instruct-v0.3-GGUF --include *Q4_K_M.gguf --tool aria2c -x 16 --local-dir MaziyarPanahi--Mistral-7B-Instruct-v0.3-GGUF
使用Docker部署服务
构建之前需要先安装NVIDIA Container Toolkit
安装NVIDIA Container Toolkit
准备：
curl -fsSL https://nvidia.github.io/libnvidia-container/gpgkey | sudo gpg --dearmor -o /usr/share/keyrings/nvidia-container-toolkit-keyring.gpg \&& curl -s -L https://nvidia.github.io/libnvidia-container/stable/deb/nvidia-container-toolkit.list | \sed 's#deb https://#deb [signed-by=/usr/share/keyrings/nvidia-container-toolkit-keyring.gpg] https://#g' | \sudo tee /etc/apt/sources.list.d/nvidia-container-toolkit.list
安装：
sudo apt-get update
sudo apt-get install -y nvidia-container-toolkit
配置docker
sudo nvidia-ctk runtime configure --runtime=docker
NVIDIA Container Toolkit 安装的更多信息请参考官方文档： https://docs.nvidia.com/datacenter/cloud-native/container-toolkit/latest/install-guide.html
构建镜像
使用官方的Dockerfile: https://github.com/abetlen/llama-cpp-python/blob/main/docker/cuda_simple/Dockerfile
ARG CUDA_IMAGE="12.2.0-devel-ubuntu22.04"
FROM nvidia/cuda:${CUDA_IMAGE}# We need to set the host to 0.0.0.0 to allow outside access
ENV HOST 0.0.0.0RUN apt-get update && apt-get upgrade -y \&& apt-get install -y git build-essential \python3 python3-pip gcc wget \ocl-icd-opencl-dev opencl-headers clinfo \libclblast-dev libopenblas-dev \&& mkdir -p /etc/OpenCL/vendors && echo "libnvidia-opencl.so.1" > /etc/OpenCL/vendors/nvidia.icdCOPY . .# setting build related env vars
ENV CUDA_DOCKER_ARCH=all
ENV GGML_CUDA=1# Install depencencies
RUN python3 -m pip install --upgrade pip pytest cmake scikit-build setuptools fastapi uvicorn sse-starlette pydantic-settings starlette-context# Install llama-cpp-python (build with cuda)
RUN CMAKE_ARGS="-DGGML_CUDA=on" pip install llama-cpp-python# Run the server
CMD python3 -m llama_cpp.server
因为我本地安装的CUDA版本为12.2，所以将base镜像改为nvidia/cuda:12.2.0-devel-ubuntu22.04
docker build -t llama_cpp_cuda_simple .
启动服务
docker run --gpus=all --cap-add SYS_RESOURCE -e USE_MLOCK=0 -e model=/models/downloaded/MaziyarPanahi--Mistral-7B-Instruct-v0.3-GGUF/Mistral-7B-Instruct-v0.3.Q4_K_M.gguf -e n_gpu_layers=-1 -e chat_format=chatml-function-calling -v /mnt/d/16-LLM-Cache/llama_cpp_gnuf:/models -p 8000:8000 -t llama_cpp_cuda_simple
其中：
-v将本地文件夹映射到容器内部文件夹/models--gpus=all表示使用所有的GPU--cap-add SYS_RESOURCE表示容器将有SYS_RESOURCE的权限- 其中以
-e开头的表示设置环境变量，实际上是设置llama_cpp.server的参数，相关代码详见 https://github.com/abetlen/llama-cpp-python/blob/259ee151da9a569f58f6d4979e97cfd5d5bc3ecd/llama_cpp/server/main.py#L79 和 https://github.com/abetlen/llama-cpp-python/blob/259ee151da9a569f58f6d4979e97cfd5d5bc3ecd/llama_cpp/server/settings.py#L17 这里设置的环境变量是大小写不敏感的，见 https://docs.pydantic.dev/latest/concepts/pydantic_settings/#case-sensitivity-e model指向模型文件-e n_gpu_layers=-1表示将所有神经网络层移到GPU- 假设模型一共有N层，其中n_gpu_layers层被放在GPU上，那么剩下的 N - n_gpu_layers 就会被放在CPU上
-e chat_format=chatml-function-calling设置以支持Function Calling功能
启动完成后，在浏览器打开 http://localhost:8000/docs 查看API文档
调用测试
Function Calling
curl --location 'http://localhost:8000/v1/chat/completions' \
--header 'Content-Type: application/json' \
--header 'Authorization: Bearer sk-xxxxxxxxxxxxxxxxxxxxxx' \
--data '{"model": "gpt-3.5-turbo","messages": [{"role": "system","content": "You are a helpful assistant.\nYou can call functions with appropriate input when necessary"},{"role": "user","content": "What'\''s the weather like in Mauritius?"}],"tools": [{"type": "function","function": {"name": "get_current_weather","description": "Get the current weather in a given latitude and longitude","parameters": {"type": "object","properties": {"latitude": {"type": "number","description": "The latitude of a place"},"longitude": {"type": "number","description": "The longitude of a place"}},"required": ["latitude", "longitude"]}}}],"tool_choice": "auto"
}'
输出：
{"id": "chatcmpl-50c8e261-2b1a-4285-a6ee-e18a07ce92d9","object": "chat.completion","created": 1724757544,"model": "gpt-3.5-turbo","choices": [{"index": 0,"message": {"content": null,"tool_calls": [{"id": "call__0_get_current_weather_cmpl-97515c72-d214-4ed9-b183-7736199e5be1","type": "function","function": {"name": "get_current_weather","arguments": "{\"latitude\": -20.375, \"longitude\": 57.568} "}}],"role": "assistant","function_call": {"name": "","arguments": "{\"latitude\": -20.375, \"longitude\": 57.568} "}},"logprobs": null,"finish_reason": "tool_calls"}],"usage": {"prompt_tokens": 299,"completion_tokens": 25,"total_tokens": 324}
}
JSON Mode
curl --location "http://localhost:8000/v1/chat/completions" \--header 'Content-Type: application/json' \--header 'Accept: application/json' \--header "Authorization: Bearer sk-xxxxxxxxxxxxxxxxxxxxxx" \--data '{"model": "gpt-3.5-turbo","messages": [{"role": "user","content": "What is the best French cheese? Return the product and produce location in JSON format"}],"response_format": {"type": "json_object"}}'
输出：
{"id": "chatcmpl-bbfecfc5-2ea9-4052-93b2-08f1733e8219","object": "chat.completion","created": 1724757752,"model": "gpt-3.5-turbo","choices": [{"index": 0,"message": {"content": "{\n \"product\": \"Roquefort\",\n \"produce_location\": \"France, South of France\"\n}\n \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t","role": "assistant"},"logprobs": null,"finish_reason": "stop"}],"usage": {"prompt_tokens": 44,"completion_tokens": 50,"total_tokens": 94}
}
使用以下代码将content部分写入到文本：
text = "{\n \"product\": \"Roquefort\",\n \"location\": \"France, South of France\"\n}\n \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t"with open('resp.txt', 'w') as f:f.write(text)
可以看到内容：
{"product": "Roquefort","location": "France, South of France"
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