mmselfsup/configs/benchmarks/detectron2/coco_R_50_RetinaNet_1x.yaml

_BASE_: "Base-RetinaNet.yaml"
MODEL:
  WEIGHTS: "detectron2://ImageNetPretrained/MSRA/R-50.pkl"
  BACKBONE:
    FREEZE_AT: 0
  RESNETS:
    DEPTH: 50
    NORM: "SyncBN"
  FPN:
    NORM: "SyncBN"
TEST:
  PRECISE_BN:
    ENABLED: True