50系GPU上安装MMCV

# env
conda create --name my_env python=3.12
conda activate my_env
pip install torch==2.8.0+cu129 torchvision==0.23.0+cu129 --index-url https://download.pytorch.org/whl/cu129
conda install -c nvidia cuda==12.9# mmcv from source: https://mmcv.readthedocs.io/en/latest/get_started/build.html
# gcc (Debian 12.2.0-14+deb12u1) 12.2.0
git clone https://github.com/open-mmlab/mmcv.git
cd mmcv
pip install -r requirements/optional.txt
pip install -e . -v