PyTorch

应 yolov5 的 github 中文教程要求，额外安装 pytorch。

cuda + pytorch ？

应要求升级 cuda

升级英伟达显卡驱动并升级 CUDA 到较高的版本

参考资料 https://zhuanlan.zhihu.com/p/349729620

安装命令

根据官网的要求生成的命令。

conda install pytorch torchvision torchaudio pytorch-cuda=11.7 -c pytorch -c nvidia

根据文章所述，这里移除掉多余的内容：

conda install pytorch torchvision torchaudio pytorch-cuda=11.7

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

  - pytorch-cuda=11.7
  - torchaudio

称镜像源找不到指定依赖包，需要拓展镜像源。

• pytorch-cuda=11.7
• torchaudio

https://anaconda.org

根据文章的做法：

conda config --append channels conda-forge

仍旧不行。出错。

尝试更换命令

安装 11.8 版本，而不是 11.7 版本

conda install pytorch torchvision torchaudio pytorch-cuda=11.8

新错误如下：

(rpytorch) C:\Users\ruanzhongnan>conda install -c pytorch pytorch-cuda
Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source.
Collecting package metadata (repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: /
Found conflicts! Looking for incompatible packages.
This can take several minutes.  Press CTRL-C to abort.
failed

UnsatisfiableError:

尝试了很多方式更改。目前卡在这里。就是安装不成功。

尝试更换命令-2

根据参考资料，自己写 conda 安装命令如下：

pytorch 2.0.1

conda install pytorch torchvision torchaudio pytorch-cuda=11.8 -c https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/pytorch/win-64/

pip 增加指定镜像

上述命令仍旧非常缓慢，这里考虑使用网课所述的 pip3 来完成：

pip3 install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cu118

pip 本地安装

pip3 仍旧出现错误。接下来参考本地安装。根据教程在 conda 环境内 pip3 指定安装相对路径文件。

经过版本确定，下载此文件。torch-2.0.1+cu118-cp38-cp38-win_amd64.whl。

本地安装命令：

pip3 install D:\temp-store\torch-2.0.1+cu118-cp38-cp38-win_amd64.whl

pip install D:\temp-store\torch-2.0.1+cu118-cp38-cp38-win_amd64.whl

pip 嵌入到 conda 的 pkg 文件夹内安装

上述命令出错，总是默认走镜像：

Looking in indexes: https://mirrors.ustc.edu.cn/pypi/web/simple
Processing d:\temp-store\torch-2.0.1+cu118-cp38-cp38-win_amd64.whl
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLEOFError(8, 'EOF occurred in violation of protocol (_ssl.c:1131)'))': /pypi/web/simple/typing-extensions/
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLEOFError(8, 'EOF occurred in violation of protocol (_ssl.c:1131)'))': /pypi/web/simple/typing-extensions/
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLEOFError(8, 'EOF occurred in violation of protocol (_ssl.c:1131)'))': /pypi/web/simple/typing-extensions/
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLEOFError(8, 'EOF occurred in violation of protocol (_ssl.c:1131)'))': /pypi/web/simple/typing-extensions/
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLEOFError(8, 'EOF occurred in violation of protocol (_ssl.c:1131)'))': /pypi/web/simple/typing-extensions/
Could not fetch URL https://mirrors.ustc.edu.cn/pypi/web/simple/typing-extensions/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='mirrors.ustc.edu.cn', port=443): Max retries exceeded with url: /pypi/web/simple/typing-extensions/ (Caused by SSLError(SSLEOFError(8, 'EOF occurred in violation of protocol (_ssl.c:1131)'))) - skipping
ERROR: Could not find a version that satisfies the requirement typing-extensions (from torch) (from versions: none)
ERROR: No matching distribution found for typing-extensions
Could not fetch URL https://mirrors.ustc.edu.cn/pypi/web/simple/pip/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='mirrors.ustc.edu.cn', port=443): Max retries exceeded with url: /pypi/web/simple/pip/ (Caused by SSLError(SSLEOFError(8, 'EOF occurred in violation of protocol (_ssl.c:1131)'))) - skipping

根据教程写的命令：

conda install --use-local D:\dev-evn\anaconda\pkgs\torch-2.0.1+cu118-cp38-cp38-win_amd64.whl

pip install D:\dev-evn\anaconda\pkgs\torch-2.0.1+cu118-cp38-cp38-win_amd64.whl

重新 cd 到绝对路径内再实行

出错，还是在查询远程的东西，而不是本地安装：

Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Collecting package metadata (repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.

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

  - \dev-evn\anaconda\pkgs\torch-2.0.1+cu118-cp38-cp38-win_amd64.whl

Current channels:

  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/pytorch/win-64
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/pytorch/noarch
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/menpo/win-64
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/menpo/noarch
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/bioconda/win-64
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/bioconda/noarch
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/msys2/win-64
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/msys2/noarch
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/win-64
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/noarch
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/win-64
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/noarch
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/win-64
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/noarch
  - https://repo.anaconda.com/pkgs/main/win-64
  - https://repo.anaconda.com/pkgs/main/noarch
  - https://repo.anaconda.com/pkgs/r/win-64
  - https://repo.anaconda.com/pkgs/r/noarch
  - https://repo.anaconda.com/pkgs/msys2/win-64
  - https://repo.anaconda.com/pkgs/msys2/noarch

To search for alternate channels that may provide the conda package you're
looking for, navigate to

    https://anaconda.org

and use the search bar at the top of the page.

根据教程，新的命令为：

• Anaconda Prompt 切换路径/工作目录

conda install --use-local torch-2.0.1+cu118-cp38-cp38-win_amd64.whl

仍旧出错，仍旧在查询远程镜像。

进入终端改文件存储

• 用 Anaconda 安装本地 python 包

根据资料改的命令：

pip install ./anaconda/pkgs/torch-2.0.1+cu118-cp38-cp38-win_amd64.whl

pip install torch-2.0.1+cu118-cp38-cp38-win_amd64.whl

pip install ./torch-2.0.1+cu118-cp38-cp38-win_amd64.whl

pip install ./dev-evn/anaconda/pkgs/torch-2.0.1+cu118-cp38-cp38-win_amd64.whl

失败。要么查询不到文件，要么还是走镜像。

pip install 安装指定版本或本地 WHL 文件

• pip install 安装指定版本或本地 WHL 文件

pip install --user ./dev-evn/anaconda/pkgs/torch-2.0.1+cu118-cp38-cp38-win_amd64.whl

关闭 v2rayN 翻墙节点 再次本地安装

pip install D:\dev-evn\anaconda\pkgs\torch-2.0.1+cu118-cp38-cp38-win_amd64.whl

成功。

初步结论。在已经安装好清华镜像的情况下，就不要再翻墙了。

验证

• https://www.bilibili.com/video/BV1S5411X7FY?p=28

import torch
torch.cuda.is_available()

cuda toolkit ？

执行以下命令，出错，找不到内容

nvcc --version

历史下载版本：

https://developer.nvidia.com/cuda-toolkit-archive

CUDA Toolkit 安装教程（Windows） 值得注意的是，包括了环境变量等内容。

https://blog.csdn.net/qq_42951560/article/details/116131410

TODO 尝试实现 docker 镜像安装 pytorch 环境

bing keys：

docker Python 机器学习环境搭建 最佳实践

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58b79b6-🦄 refactor(notes): 给之前的旧文件重命名；标记过时的文档。

569e4fa-📃 docs(notes): 全面替换掉 https://cdn.jsdelivr.net/gh/ruan-cat/img-store/img 的cdn地址。

7cf5d91-🐳 chore: 更改图床使用的用户名，改成 ruan-cat 。

807d2df-🦄 refactor: 移动到单仓结构下专属的docs文件内

b6ed0df-🦄 refactor: 重命名

f6c9e1f-✨ feat: 学习；

d42776a-✨ feat: pytorch 验证；

a427495-✨ feat: NotImplementedError

0be267c-✨ feat: 成功使用 pip 本地安装的方式，安装了pytorch 依赖包；

3480e91-✨ feat: 标记正在学习的视频；