norm_cfg = dict(type='SyncBN', requires_grad=True)
pretrained = None
model = dict(
    type='EncoderDecoder',
    pretrained=None,
    backbone=dict(
        type='RevCol',
        channels=[48, 96, 192, 384],
        layers=[3, 3, 9, 3],
        num_subnet=4,
        drop_path=0.2,
        save_memory=False, 
        out_indices=[0, 1, 2, 3],
        init_cfg=dict(type='Pretrained', checkpoint=pretrained)),
    decode_head=dict(
        type='UPerHead',
        in_channels=[128, 256, 512, 1024],
        in_index=[0, 1, 2, 3],
        pool_scales=(1, 2, 3, 6),
        channels=512,
        dropout_ratio=0.1,
        num_classes=19,
        norm_cfg=norm_cfg,
        align_corners=False,
        loss_decode=dict(
            type='CrossEntropyLoss', use_sigmoid=False, loss_weight=1.0)),
    auxiliary_head=dict(
        type='FCNHead',
        in_channels=384,
        in_index=2,
        channels=256,
        num_convs=1,
        concat_input=False,
        dropout_ratio=0.1,
        num_classes=19,
        norm_cfg=norm_cfg,
        align_corners=False,
        loss_decode=dict(
            type='CrossEntropyLoss', use_sigmoid=False, loss_weight=0.4)),
    # model training and testing settings
    train_cfg=dict(),
    test_cfg=dict(mode='whole'))
