debug集锦
查询GPU时无进程运行，但是显存却被占用了
https://ddelephant.blog.csdn.net/article/details/123104958
sudo fuser -v /dev/nvidia*
TypeError: cannot pickle '_io.BufferedReader' object
dataset的__init__里有无法序列化的东西，把它去掉或放到get_item里
ffmpeg: error while loading shared libraries: libopenh264.so.5: cannot open shared object file: No such file or directory
mamba update ffmpeg
