The problem of insufficient GPU memory during training

[FuchengSu]

Thank you very much for being able to open source project. I encountered some problems in the process of learning the project, and I hope to get your help. I tried to use 4 nvidia2080ti for distributed training, but I encountered a problem of insufficient memory. I see It is mentioned in the Readme file that training can be completed by using nvidia1080. What are the possible reasons?