Conda 是开源的包管理系统和环境管理系统，可以安装软件包的多个版本和依赖，而且方便切换。
可以安装Miniconda，实现安装conda的目的。
下载地址 ,注意对应的python版本和系统位数。
这里下载的版本是3.7.9的windows 64位的版本。
下载地址：
https://www.python.org/downloads/windows/
注意 在安装conda时，默认是带python的，也就是这个单独的python可以不安装。
2. PyTorch>=1.7conda install pytorch torchvision torchaudio cudatoolkit=11.3 -c pytorch
这意味着conda会从官方源下载指定的包。我们需要把尾端的“-c pytorch”去掉， conda才会从我们设置的国内源去下载。
因为安装了mamba，所以可以用mamba安装
mamba install pytorch torchvision torchaudio cudatoolkit=11.3
下面这个是用conda安装的过程
(envZhao) C:\Users\zzh_m>conda install pytorch torchvision torchaudio cudatoolkit=11.3 -c pytorch
Collecting package metadata (current_repodata.json): done
Solving environment: done
==> WARNING: A newer version of conda exists. <==
current version: 4.11.0
latest version: 4.12.0
Please update conda by running
$ conda update -n base -c defaults conda
WARNING conda.gateways.disk.delete:unlink_or_rename_to_trash(144): Could not remove or rename D:\Programs\conda411\pkgs\pytorch-1.11.0-py3.7_cuda11.3_cudnn8_0.tar.bz2. Please remove this file manually (you may need to reboot to free file handles)
WARNING conda.gateways.disk.delete:unlink_or_rename_to_trash(144): Could not remove or rename D:\Programs\conda411\pkgs\torchvision-0.12.0-py37_cu113.tar.bz2. Please remove this file manually (you may need to reboot to free file handles)
## Package Plan ##
environment location: D:\Programs\conda411\envs\envZhao
added / updated specs:
- cudatoolkit=11.3
- pytorch
- torchaudio
- torchvision
The following packages will be downloaded:
package | build
---------------------------|-----------------
blas-1.0 | mkl 6 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
brotlipy-0.7.0 |py37h2bbff1b_1003 337 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
ca-certificates-2022.3.29 | haa95532_1 122 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
certifi-2021.10.8 | py37haa95532_2 152 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
cffi-1.15.0 | py37h2bbff1b_1 222 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
charset-normalizer-2.0.4 | pyhd3eb1b0_0 35 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
cryptography-36.0.0 | py37h21b164f_0 1.0 MB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
cudatoolkit-11.3.1 | h59b6b97_2 545.3 MB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
freetype-2.10.4 | hd328e21_0 466 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
idna-3.3 | pyhd3eb1b0_0 49 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
intel-openmp-2021.4.0 | haa95532_3556 2.2 MB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
jpeg-9d | h2bbff1b_0 283 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
libpng-1.6.37 | h2a8f88b_0 333 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
libtiff-4.2.0 | hd0e1b90_0 786 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
libuv-1.40.0 | he774522_0 255 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
libwebp-1.2.2 | h2bbff1b_0 658 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
lz4-c-1.9.3 | h2bbff1b_1 132 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
mkl-2021.4.0 | haa95532_640 114.9 MB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
mkl-service-2.4.0 | py37h2bbff1b_0 49 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
mkl_fft-1.3.1 | py37h277e83a_0 135 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
mkl_random-1.2.2 | py37hf11a4ad_0 216 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
numpy-1.21.5 | py37h7a0a035_1 25 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
numpy-base-1.21.5 | py37hca35cd5_1 4.4 MB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
openssl-1.1.1n | h2bbff1b_0 4.8 MB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
pillow-9.0.1 | py37hdc2b20a_0 916 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
pycparser-2.21 | pyhd3eb1b0_0 94 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
pyopenssl-22.0.0 | pyhd3eb1b0_0 50 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
pysocks-1.7.1 | py37_1 28 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
pytorch-1.11.0 |py3.7_cuda11.3_cudnn8_0 1.23 GB pytorch
requests-2.27.1 | pyhd3eb1b0_0 54 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
six-1.16.0 | pyhd3eb1b0_1 18 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
tk-8.6.11 | h2bbff1b_0 3.3 MB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
torchvision-0.12.0 | py37_cu113 9.0 MB pytorch
typing_extensions-4.1.1 | pyh06a4308_0 28 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
urllib3-1.26.9 | py37haa95532_0 188 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
win_inet_pton-1.1.0 | py37haa95532_0 35 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
xz-5.2.5 | h62dcd97_0 244 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
zlib-1.2.12 | h8cc25b3_2 116 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
zstd-1.4.9 | h19a0ad4_0 478 KB https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
------------------------------------------------------------
Total: 1.90 GB
The following NEW packages will be INSTALLED:
blas anaconda/pkgs/main/win-64::blas-1.0-mkl
brotlipy anaconda/pkgs/main/win-64::brotlipy-0.7.0-py37h2bbff1b_1003
cffi anaconda/pkgs/main/win-64::cffi-1.15.0-py37h2bbff1b_1
charset-normalizer anaconda/pkgs/main/noarch::charset-normalizer-2.0.4-pyhd3eb1b0_0
cryptography anaconda/pkgs/main/win-64::cryptography-36.0.0-py37h21b164f_0
cudatoolkit anaconda/pkgs/main/win-64::cudatoolkit-11.3.1-h59b6b97_2
freetype anaconda/pkgs/main/win-64::freetype-2.10.4-hd328e21_0
idna anaconda/pkgs/main/noarch::idna-3.3-pyhd3eb1b0_0
intel-openmp anaconda/pkgs/main/win-64::intel-openmp-2021.4.0-haa95532_3556
jpeg anaconda/pkgs/main/win-64::jpeg-9d-h2bbff1b_0
libpng anaconda/pkgs/main/win-64::libpng-1.6.37-h2a8f88b_0
libtiff anaconda/pkgs/main/win-64::libtiff-4.2.0-hd0e1b90_0
libuv anaconda/pkgs/main/win-64::libuv-1.40.0-he774522_0
libwebp anaconda/pkgs/main/win-64::libwebp-1.2.2-h2bbff1b_0
lz4-c anaconda/pkgs/main/win-64::lz4-c-1.9.3-h2bbff1b_1
mkl anaconda/pkgs/main/win-64::mkl-2021.4.0-haa95532_640
mkl-service anaconda/pkgs/main/win-64::mkl-service-2.4.0-py37h2bbff1b_0
mkl_fft anaconda/pkgs/main/win-64::mkl_fft-1.3.1-py37h277e83a_0
mkl_random anaconda/pkgs/main/win-64::mkl_random-1.2.2-py37hf11a4ad_0
numpy anaconda/pkgs/main/win-64::numpy-1.21.5-py37h7a0a035_1
numpy-base anaconda/pkgs/main/win-64::numpy-base-1.21.5-py37hca35cd5_1
pillow anaconda/pkgs/main/win-64::pillow-9.0.1-py37hdc2b20a_0
pycparser anaconda/pkgs/main/noarch::pycparser-2.21-pyhd3eb1b0_0
pyopenssl anaconda/pkgs/main/noarch::pyopenssl-22.0.0-pyhd3eb1b0_0
pysocks anaconda/pkgs/main/win-64::pysocks-1.7.1-py37_1
pytorch pytorch/win-64::pytorch-1.11.0-py3.7_cuda11.3_cudnn8_0
pytorch-mutex pytorch/noarch::pytorch-mutex-1.0-cuda
requests anaconda/pkgs/main/noarch::requests-2.27.1-pyhd3eb1b0_0
six anaconda/pkgs/main/noarch::six-1.16.0-pyhd3eb1b0_1
tk anaconda/pkgs/main/win-64::tk-8.6.11-h2bbff1b_0
torchaudio pytorch/win-64::torchaudio-0.11.0-py37_cu113
torchvision pytorch/win-64::torchvision-0.12.0-py37_cu113
typing_extensions anaconda/pkgs/main/noarch::typing_extensions-4.1.1-pyh06a4308_0
urllib3 anaconda/pkgs/main/win-64::urllib3-1.26.9-py37haa95532_0
win_inet_pton anaconda/pkgs/main/win-64::win_inet_pton-1.1.0-py37haa95532_0
xz anaconda/pkgs/main/win-64::xz-5.2.5-h62dcd97_0
zlib anaconda/pkgs/main/win-64::zlib-1.2.12-h8cc25b3_2
zstd anaconda/pkgs/main/win-64::zstd-1.4.9-h19a0ad4_0
The following packages will be SUPERSEDED by a higher-priority channel:
ca-certificates pkgs/main --> anaconda/pkgs/main
certifi pkgs/main --> anaconda/pkgs/main
openssl pkgs/main --> anaconda/pkgs/main
Proceed ([y]/n)?
默认安装就可以。
在配置python解释器时，把利用mamba安装的pytorch环境目录添加到编译器中。例如这里选择第一个配置选项，虚拟环境配置，然后选择利用现有环境，
把envZhao这个虚拟环境中的python添加上就可以。
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