Since pytorch has supported this feature, why not add it?
贡献者指南
技术栈
python
领域
machine learning
议题类型
feature
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-3 hours
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
unclear
前置要求
Basic knowledge of PyTorchFamiliarity with ImageNet exampleUnderstanding of SyncBatchNorm
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
35
研究方向
Review the main training script in the ImageNet example (likely train.py or main.py) to identify where nn.BatchNorm is currently used. Then investigate how to integrate nn.SyncBatchNorm from PyTorch's documentation. Note that the issue lacks details on which specific layer to replace or any configuration needed, so further clarification from maintainers may be required.
