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                                            guiguidxhb

训练SegFormer-B1在cityscapes数据集，出现错误“Defaule process group is not initialized”

I also meet this issue. After i replace the 'SyncBN' in "segformer.b1.512x512.ade.160k.py", "segformer.py" and "seformer_head.py" with 'BN', the error disappear.