First, install some packages from their official site manually, mainly some packages related to cuda, and you have to choose the cuda version to use.
Install pytorch from their official site manually. You can skip this if you want to use the latest pytorch.
Install repos from mmlab by openmim as follows:
pip install -U openmim
mim install xxxGenerally, you can just use the latest pacages in requirements.txt without specific their version, so you can use command as follow to install this project and all required packages.
pip install -r requirements.txt
pip install -e .