Used Multi gpus but takes same time with 1 gpu training

[SooYoungYang]

Hello

i'm using 2 X RTX 3090 gpus for reproducing your amazing works.
But like i mentioned above, there are no eta differences between using 1 GPU and 2 GPU(both takes about 5 and half days for coco resnet50)

Can you guys guess where the problem happens? I didn't revised any code about Multi GPU

Thanks.