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# <div align="center"><strong>MMCV</strong></div>
## 简介
MMCV是计算机视觉研究的基础库,主要提供以下功能:图像处理、图像和标注结果可视化、图像转换、多种CNN网络结构、高质量实现的常见CUDA算子。DAS软件栈中的MMCV版本,不仅保证了组件核心功能在DCU加速卡的可用性,还针对DCU特有的硬件架构进行了深度定制优化。这使得开发者能够以极低的成本,轻松实现应用程序在DCU加速卡上的快速迁移和性能提升。
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## 安装
组件支持组合
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   | PyTorch版本 | MMCV版本    | DTK版本                  | Python版本           | 推荐编译方式 |
   | ----------- | ----------- | ------------------------ | -------------------- | ------------ |
   | 2.4.1       | 1.6.1       | 25.04                    | 3.7、3.8、3.9、3.10  | fastpt不转码 |
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+ pytorch版本大于等于2.4.1 && dtk版本大于25.04 推荐使用fastpt不转码编译。
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### 1、使用pip方式安装
mmcv whl包下载目录:[http://10.6.10.68:8000/debug/mmcv/dtk-24.04.1/](http://10.6.10.68:8000/debug/mmcv/dtk-24.04.1/),选择对应的pytorch版本和python版本下载对应mmcv的whl包
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```shell
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pip install mmcv* (下载的mmcv的whl包)
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```
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### 2、使用源码编译方式安装
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#### 编译环境准备
提供基于fastpt不转码编译:
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1. 基于光源pytorch基础镜像环境:镜像下载地址:[https://sourcefind.cn/#/image/dcu/pytorch](https://sourcefind.cn/#/image/dcu/pytorch),根据pytorch、python、dtk及系统下载对应的镜像版本。
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2. 基于现有python环境:安装pytorch,fastpt whl包下载目录:[http://10.6.10.68:8000/debug/pytorch/dtk24.04.1/](http://10.6.10.68:8000/debug/pytorch/dtk24.04.1/),根据python、dtk版本,下载对应pytorch的whl包。安装命令如下:
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```shell
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pip install torch* (下载的torch的whl包)
pip install fastpt* (下载的fastpt的whl包, 安装顺序, 先安装torch,后安装fastpt)
pip install setuptools==59.5.0 wheel
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```
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#### 源码编译安装
- 代码下载
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```shell
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git clone https://developer.hpccube.com/codes/aicomponent/mmcv # 根据编译需要切换分支
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```
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- 提供2种源码编译方式(进入mmcv目录):
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```
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1. 设置不转码编译环境变量
source /opt/dtk/cuda/env.sh
export USE_FASTPT_CUDA=1
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2. 编译whl包并安装
MMCV_WITH_OPS=1 python3 setup.py -v bdist_wheel
pip install dist/mmcv*
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3. 源码编译安装
MMCV_WITH_OPS=1 python3 setup.py install
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```
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#### 注意事项
+ 若使用pip install下载安装过慢,可添加pypi清华源:-i https://pypi.tuna.tsinghua.edu.cn/simple/
+ ROCM_PATH为dtk的路径,默认为/opt/dtk
+ 在pytorch2.5.1环境下编译需要支持c++17语法,打开setup.py文件,把文件中的 -std=c++14 修改为 -std=c++17
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## 验证
- python -c "import mmcv; mmcv.\_\_version__",版本号与官方版本同步,查询该软件的版本号,例如1.6.1;
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## Known Issue
-
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## 参考资料
- [README_ORIGIN](README_ORIGIN.md)
- [README_zh-CN](README_zh-CN.md)
- [https://github.com/open-mmlab/mmcv](https://github.com/open-mmlab/mmcv)