Pytorch installation new pit

The problem background

It has been less than half a year since I went into the pit to study deeply （ Vegetable dog, a big man, don't laugh ）,pytorch Become an integral part of me , Just install pytorch It won't go down 20 Time , A new server recently , The first step must be to match the environment step by step , Then you can run some experiments , little does one think pytorch It's cheating again .

Problems and Analysis

The problem is very simple , Server cuda Something has been installed , Just follow cuda Version to pytoch Just find the download order on the official website , Enter the command ：

nvidia-smi

according to cuda Version find the latest installation command

conda install pytorch torchvision torchaudio cudatoolkit=11.3 -c pytorch

The first problem begins to appear , This is gone 2min Download progress of ：

But we don't panic , Change the source , I found Qinghuayuan on the Internet 、 China University of science and technology , Put the path of the image in /home/ Own user name /.condarc below , Then according to the instructions of the online brother, remove the... In the download order -c pytorch（ In this way, the order can be found in the country ）：

conda install pytorch torchvision torchaudio cudatoolkit=11.3

As a general rule , It's over without any problem here , As a result, there is a second problem , The reason for the error is that the corresponding version cannot be found in several domestic sources torchaudio：

Then I began to try pip Download the corresponding version , I can't find it , There is no alternative but to continue conda Next try , Since this package cannot be found in these domestic sources , Then download it separately with the original command ：

conda install torchaudio==0.10.1 -c pytorch

It turned out to be wrong , But this error report also gave me key information ：

Actually quite surprised ,python Now it's all 3.10 了 , I can only blame myself for my ignorance , Honestly downgrade , Then rerun the command just now ：

conda install torchaudio==0.10.1 -c pytorch

I feel that I can basically solve the problem here , Then I saw

It seems that the initial problem has not been solved yet , Turn around and return to the origin , The domestic source cannot find the corresponding package , The source of the official website is too slow and often disconnected , Just when I was stuck in a bottleneck , My classmate told me that it was no problem for him to change the source in the same way on the original server ！ It occurred to me that ： No, people's domestic sources are different from mine ？！
No, I don't know , I was surprised to find it ：

Sure enough, it's still the trouble caused by the lack of knowledge , Thanks to Beiwai mirror source ！ Directly in their own .condarc Add these two sentences ：

-https://mirrors.bfsu.edu.cn/anaconda/pkgs/main/
-https://mirrors.bfsu.edu.cn/anaconda/pkgs/free/

Then it's back to the order just now ：

conda install pytorch torchvision torchaudio cudatoolkit=11.3

Check regularly after installation pytorch Is the installation successful , Get into python Environmental Science ：

$ >> import torch
$ >> torch.cuda.is_available()
True

End of the flower ！！