INT305 - Machine Learning - PyTorch 配置方法

1. 安装 Anaconda3

   运行安装程序 Anaconda3-2021.05-Windows-x86_64.exe
   下载地址(清华镜像) https://mirrors.tuna.tsinghua.edu.cn/anaconda/archive/

2. 打开 Anaconda Powershell Prompt (anaconda3)

这里尝试了多种版本的组合，我是尝试到3.6.10才成功，3.8往上报错了，我也不知道为什么
需要注意的是，为了避免本地已经存在的环境，最好新建虚拟环境，再开始配置安装PyTorch

conda create -n PyTorch python==3.6.10

安装完成后，切换 base 到 PyTorch 环境路径下

conda activate PyTorch

安装操作，通过查询 PyTorch 官网 https://pytorch.org/ 获取用于 Conda 的安装命令

根据需求，选择 Stable - Windows - Conda - Python 由于项目简单不需要 GPU 加速，这里选择 CPU-Only

conda install pytorch torchvision torchaudio cpuonly -c pytorch

3. 验证安装

安装完成后，在留在窗口内，打开 Python

python

import torch
x = torch.rand(2, 3)
print(x)

Anaconda Powershell Prompt (anaconda3) 不报错，并且有输出，则安装成功

tensor([[0.4516, 0.0617, 0.3831],
        [0.6722, 0.4949, 0.7987]])

4. 配置信息表

conda 信息

(PyTorch) PS C:\Users\name> conda info

     active environment : PyTorch
    active env location : D:\anaconda3\envs\PyTorch
            shell level : 2
       user config file : C:\Users\name\.condarc
 populated config files : C:\Users\name\.condarc
          conda version : 22.9.0
    conda-build version : 3.21.4
         python version : 3.8.8.final.0
       virtual packages : __cuda=11.7=0
                          __win=0=0
                          __archspec=1=x86_64
       base environment : D:\anaconda3  (writable)
      conda av data dir : D:\anaconda3\etc\conda
  conda av metadata url : None
           channel URLs : 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
                          https://conda.anaconda.org/conda-forge/win-64
                          https://conda.anaconda.org/conda-forge/noarch
          package cache : D:\anaconda3\pkgs
                          C:\Users\name\.conda\pkgs
                          C:\Users\name\AppData\Local\conda\conda\pkgs
       envs directories : D:\anaconda3\envs
                          C:\Users\name\.conda\envs
                          C:\Users\name\AppData\Local\conda\conda\envs
               platform : win-64
             user-agent : conda/22.9.0 requests/2.25.1 CPython/3.8.8 Windows/10 Windows/10.0.19041
          administrator : False
             netrc file : None
           offline mode : False

Python 信息

(PyTorch) PS C:\Users\name> python
Python 3.6.10 |Anaconda, Inc.| (default, May  7 2020, 19:46:08) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.