colab上配置mmdetection记录

# install dependencies: (use cu101 because colab has CUDA 10.1)
#!pip install -U torch==1.5.1+cu101 torchvision==0.6.1+cu101 -f https://download.pytorch.org/whl/torch_stable.html
!pip install -U torch==1.8.1+cu111 torchvision==0.9.1+cu111 -f https://download.pytorch.org/whl/torch_stable.html

# install mmcv-full thus we could use CUDA operators
# !pip install mmcv-full 

# !!!!! 此处原来代码后没有加对应torch版本号，大坑！！！！浪费了我好久时间，加了后终于好了！！！！！
!pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/cu111/torch1.8.0/index.html


# Install mmdetection
!rm -rf mmdetection
!git clone https://github.com/open-mmlab/mmdetection.git
%cd mmdetection

!pip install -e .

# install Pillow 7.0.0 back in order to avoid bug in colab
!pip install Pillow==7.0.0

安装的 pytorch 和 mmcv-full 版本一定要对上！！！！

安装时直接加上版本号！！！！