本地部署Qwen2.5-VL-7B-Instruct模型

本地部署Qwen2.5-VL-7B-Instruct模型

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**创建环境**
conda create -n qwenvl python=3.11 -y

# 报错：
Solving environment: failed

PackagesNotFoundError: The following packages are not available from current channels:

# 处理：
conda config --append channels conda-forge

# 激活环境 (注意这里的语法)
conda activate qwenvl

yum -y install git

安装依赖

pip install vllm
报错：
error: subprocess-exited-with-error
  
  × Preparing metadata (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [6 lines of output]
      
      Cargo, the Rust package manager, is not installed or is not on PATH.
      This package requires Rust and Cargo to compile extensions. Install it through
      the system's package manager or via https://rustup.rs/
      
      Checking for Rust toolchain....
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

处理：
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
或者使用如下方法
# 安装
(qwenvl) [root@localhost qwenvl]# rustc --version
bash: rustc: command not found...
Install package 'rust' to provide command 'rustc'? [N/y] y

 * Waiting in queue... 
The following packages have to be installed:
 rust-1.66.1-1.el9.x86_64	The Rust Programming Language
 rust-std-static-1.66.1-1.el9.x86_64	Standard library for Rust
Proceed with changes? [N/y] y


 * Waiting in queue... 
 * Waiting for authentication... 
 * Waiting in queue... 
 * Requesting data... 
 * Testing changes... 
 * Installing packages... 
rustc 1.66.1 (90743e729 2023-01-10) (Red Hat 1.66.1-1.el9)

# 安装
(qwenvl) [root@localhost qwenvl]# cargo --version
bash: cargo: command not found...
Install package 'cargo' to provide command 'cargo'? [N/y] y


 * Waiting in queue... 
 * Loading list of packages.... 
The following packages have to be installed:
 cargo-1.66.1-1.el9.x86_64	Rust's package manager and build tool
Proceed with changes? [N/y] y


 * Waiting in queue... 
 * Waiting for authentication... 
 * Waiting in queue... 
 * Requesting data... 
 * Testing changes... 
 * Installing packages... 
cargo 1.66.1

继续安装

pip install vllm
pip install git+https://github.com/huggingface/transformers accelerate

# 如果 transformers 拉取失败，手动下载代码并安装
访问 https://github.com/huggingface/transformers
点击 Code > Download ZIP，下载 ZIP 文件。
解压 ZIP 文件并进入目录：

unzip transformers-main.zip
cd transformers-main
本地安装：
pip install .

pip install torch
pip install flash-attn --no-build-isolation
pip install "huggingface_hub[hf_transfer]"
pip install modelscope
pip install qwen_vl_utils

拉取模型

cd /data/
mkdir -p qwen2.5/Qwen2.5-VL-7B-Instruct #创建模型文件夹 
cd qwen2.5/ #进到数据盘目录

#下载模型到指定文件夹
modelscope download --model Qwen/Qwen2.5-VL-7B-Instruct --local_dir ./Qwen2.5-VL-7B-Instruct 

# local_dir后是下载到指定文件夹

测试脚本

vim vl_demo.py

from transformers import Qwen2_5_VLForConditionalGeneration, AutoProcessor
from qwen_vl_utils import process_vision_info
import torch

# 清空CUDA缓存，以释放内存
torch.cuda.empty_cache()

# 指定使用第3块显卡 (如果显卡可用)
device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu")

# 加载模型到指定的设备
# 指定模型的位置
model = Qwen2_5_VLForConditionalGeneration.from_pretrained(
    "/data/qwen2.5/Qwen2.5-VL-7B-Instruct", 
    torch_dtype="auto"  # 自动选择精度
)

# 将模型迁移到指定设备（如GPU或CPU）
model.to(device)

# 加载处理器，用于处理输入的图像和文本
processor = AutoProcessor.from_pretrained("/data/qwen2.5/Qwen2.5-VL-7B-Instruct")

# 准备消息和输入内容
messages = [
    {
        "role": "user",  # 用户角色
        "content": [
            {
                "type": "image",  # 图像类型
                # "image": "/opt/src/vl_demo1/20250219101931.jpg",  # 图像路径（本地路径）
                "image": "https://qianwen-res.oss-cn-beijing.aliyuncs.com/Qwen-VL/assets/demo.jpeg",  # 图像路径（本地路径）
                "max_pixels": 512 * 512,  # 图像最大尺寸限制
            },
            # 这段代码注释掉了文本输入，如果需要可以打开
            #{"type": "text", "text": "Describe this image."},
            # {"type": "text", "text": "请认真阅读图像内容后，以HTML结构化输出。"},  # 文本输入，要求生成HTML格式的描述
            {"type": "text", "text": "图片表达的是什么意思,以中文结果输出。"},  # 文本输入，要求生成HTML格式的描述
        ],
    }
]

# 准备输入文本，用于推理
text = processor.apply_chat_template(
    messages, tokenize=False, add_generation_prompt=True  # 准备聊天模板并添加生成提示
)

# 处理图像和视频输入
image_inputs, video_inputs = process_vision_info(messages)

# 使用处理器准备所有输入
inputs = processor(
    text=[text],
    images=image_inputs,
    videos=video_inputs,
    padding=True,
    return_tensors="pt",  # 将输入转换为 PyTorch 张量
)

# 将所有输入迁移到与模型相同的设备
inputs = inputs.to(device)

# 进行推理：生成模型的输出
generated_ids = model.generate(**inputs, max_new_tokens=4096)  # 最大生成 4096 个新token
generated_ids_trimmed = [
    out_ids[len(in_ids):] for in_ids, out_ids in zip(inputs.input_ids, generated_ids)
]

# 解码生成的输出并打印
output_text = processor.batch_decode(
    generated_ids_trimmed, skip_special_tokens=True, clean_up_tokenization_spaces=False
)
print(output_text)  # 输出结果

输出结果

解析的原图如下

如有其他报错 以下查询，有部分答案

https://github.com/QwenLM/Qwen2.5-VL/issues?q=memory&page=2