conda 安装 pytorch

1、修改源，C:/user/用户名/.condarc

channels:
  - http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/peterjc123/
  - http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/pytorch/
  - http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/menpo/
  - http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/bioconda/
  - http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/msys2/
  - http://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/conda-forge/
  - http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/
  - http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
show_channel_urls: true

2、清除缓存

conda clean -i

3、选择合适的pytorch安装命令

官网地址：    https://pytorch.org/

 此处用了清华源，因此直接去除 -c pytorch ,使用这样的命令

conda install pytorch torchvision torchaudio cudatoolkit=11.3

4、验证

(pytorch) C:\Users\sethnie>python
Python 3.8.12 | packaged by conda-forge | (default, Oct 12 2021, 21:19:05) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import torch
>>> torch.cuda.is_available()
True
>>>