Environment :gpu 3090 24GB,Ubuntu 18.04
At first,I was configure this project on windows,It's really hard to install dependency packages,it cost me two days,and got no process,today I use ubuntu then it just works.
Get to pytorch offical address: PyTorch
then this ,just download smoothly in ubuntu,but it's hard in windows,jesus focking christs 
everything is just ok,let's move on...
Reference:It's really hard for u to configure this environment on windows os,believe me,but still got people work successfully on that ,you can see their work on bilibili and tech-blogs,respect!
Swin-Transformer-Object-Detection 配置与训练自己的数据集（踩坑）_开始学AI的博客-CSDN博客