一、安装xinference

配置环境变量
export XINFERENCE_ENDPOINT=http://localhost:5544
pip install xinference
pip install sentence-transformers # 如果不安装此模块，向量排序模型加载出错

二、启动xinference

./xinference-local  --host=0.0.0.0  --port=5544

三、注册本地模型

1、注册embedding模型
curl -X POST "http://localhost:5544/v1/models" \
-H "Content-Type: application/json" \
-d '{
  "model_type": "embedding",
  "model_name": "bce-embedding-base_v1",  
  "model_uid": "bce-embedding-base_v1",   
  "model_path": "/root/embed_rerank/bce-embedding-base_v1/" 
}'

验证：
curl -X POST "http://localhost:5544/v1/embeddings" \
-H "Content-Type: application/json" \
-d '{
  "model": "bce-embedding-base_v1",
  "input": ["需要嵌入的文本1", "这是第二个句子"]
}'



2、注册rerank模型

curl -X POST "http://localhost:5544/v1/models" \
-H "Content-Type: application/json" \
-d '{
  "model_type": "rerank",              
  "model_name": "bce-reranker-base_v1",     
  "model_uid": "bce-reranker-base_v1",   
  "model_path": "/root/embed_rerank/bce-reranker-base_v1" 
}'

验证
curl -X POST "http://localhost:5544/v1/rerank" \
-H "Content-Type: application/json" \
-d '{
  "model": "bge-reranker-v2-m3",
  "query": "What is Python?",
  "documents": [
    "Python is a programming language.",
    "Java is another language.",
    "Python is used for web development."
  ]
}'


3、执行./xinference list 查看运行模型

四、删除模型

curl -X DELETE "http://localhost:5544/v1/models/bge-reranker-v2-m3"

五、备注

1、在cpu运行

• 服务器有显卡但是选择用cpu加载

             启动xinference之前设置

              export CUDA_VISIBLE_DEVICES=""

• 服务器无显卡会自动在cpu加载模型

2、在gpu运行

启动服务器前设置环境变量

export CUDA_VISIBLE_DEVICES=-1

curl -X POST "http://localhost:5544/v1/models" \
-H "Content-Type: application/json" \
-d '{
  "model_type": "embedding",
  "model_name": "bce-embedding-base_v1",  
  "model_uid": "bce-embedding-base_v1",   
  "model_path": "/root/zml/embed_rerank/bce-embedding-base_v1/" 
  "gpu_idx": 1
  "n_gpu" : 1
}'


备注：
gpu_idx :选用的显卡index
n_gpu:选定的显卡总张数

问题1、通过curl调用rerank模型接口document返回内容为null

解决方法：

# 增加 "return_documents": true 
-H "Content-Type: application/json" \
-d '{
  "model": "bce-reranker-base_v1",
  "query": "What is Python?",
  "documents": [
    "Python is a programming language.",
    "Java is another language.",
    "Python is used for web development."
  ],
  "return_documents": true 
}'