How to Set the "find_unused_parameters=True" After Installing Detectron2

[15024287710Jackson]

When I train with 2 GPUs, I have the same problem in facebookresearch/detectron2#4191.
Thus, after reading your README.MD, I want to know how to set the "find_unused_parameters=True" in distributed training of my own detectron2.
I have tried to set the "find_unused_parameters=True" in the detectron2/engine/defaults.py

Thus, I want to ask you whether I change it correctly.
I am looking forward to your response.

[qqlu]

Hello,

Your modification is correct.

[15024287710Jackson]

Thank you!