pytorch version >= 1.9 ?

[hirokic5]

Hi, thank you for great repository !!!

When I tested pretrained model, there was error in this line.

semantic-segmentation/tools/infer.py

Line 71 in 492231c

 @torch.inference_mode() 

@torch.inference_mode() method is implemented in torch version 1.9. later.

So, I would be appreciate if you could change torch version in README from >= 1.8,1 to >= 1.9 .

[scl666]

你好，请问有使用camvid数据集吗，我使用DDRNet训练过程中损失出现nan，cityscapes数据集没有这个错误