My experiments based on Google Landmarks Dataset v2:
https://github.com/cvdfoundation/google-landmark

and accompanying competition
https://www.kaggle.com/c/landmark-recognition-2020/

Install required packages:

conda create --name landmarks python=3.7
conda activate landmarks
pip install --use-feature=2020-resolver -r requirements.txt

Optionally CUDA version (here 10.2) could be installed using anaconda instead of system-wide installation: conda install -y cudatoolkit=10.2 -c pytorch