Zhaochong An

> Could you check whether `torch.nn.SyncBatchNorm` has this method? I just check as follows: $ torch.nn.SyncBatchNorm $ torch.nn.SyncBatchNorm._specify_ddp_gpu_num() Traceback (most recent call last): File "", line 1, in TypeError: _specify_ddp_gpu_num()...

But my current codebase is from mmseg which has assert clause to check the mmcv version to be from 1.1.4 to 1.3.0 in its __init__.py. ``` MMCV_MIN = '1.1.4' MMCV_MAX...

Moreover, can you release the pre-process code? So people can train the model on other dataset. Thank you so much!