pytorch-lightning==1.5.10，python3.7，torch==1.10.0
20220421
1
module 'torchmetrics' has no attribute 'F1'
改成：
torchmetrics.F1Score()
2
You have asked for `amp_level='O2'` but it's only supported with `amp_backend='apex'
尝试添加amp_backend: apex到Trainer里，出现：
You have asked for Apex AMP but you have not installed it. Install `apex` using this guide: https://github.com/NVIDIA/apex
参考这条安装：安装apex
expected scalar type Float but found Half
输出数据类型是torch.float32明明！
跑不下去了，先放个坑
