_base_ = [
    '../../_base_/models/resnet50.py',
    '../../_base_/datasets/imagenet_bs32_pil_resize.py',
    '../../_base_/schedules/imagenet_lars_coslr_90e.py',
    '../../_base_/default_runtime.py',
]

model = dict(backbone=dict(frozen_stages=4))

# dataset summary
train_dataloader = dict(batch_size=512)

# runtime settings
default_hooks = dict(
    checkpoint=dict(type='CheckpointHook', interval=10, max_keep_ckpts=3))