batch_size error

[boringwar]

Hi, when conducting the classification experiment on imagenet, the default batch_size is 32 x 8 on my machine if I follow the instructions. In your training log, the batch_size is 32 x 64.
Why is this difference?

Version: latest mmcv,mmcls, mmdet as well as pytorch 1.7.1, torchvision 0.8.2.

[boringwar]

I noticed that your experiments is done on 64 gpu cards, I'm wondering how to achieve the same performance with only 8 cards.