configs/_base_/schedules/imagenet_bs1024_coslr.py

# optimizer
optim_wrapper = dict(
    optimizer=dict(type='SGD', lr=0.8, momentum=0.9, weight_decay=5e-5))

# learning policy
param_scheduler = [
    dict(type='LinearLR', start_factor=0.1, by_epoch=True, begin=0, end=5),
    dict(type='CosineAnnealingLR', T_max=95, by_epoch=True, begin=5, end=100)
]

# train, val, test setting
train_cfg = dict(by_epoch=True, max_epochs=100, val_interval=1)
val_cfg = dict()
test_cfg = dict()

# NOTE: `auto_scale_lr` is for automatically scaling LR,
# based on the actual training batch size.
auto_scale_lr = dict(base_batch_size=1024)