code: def imagetransformerpp_base_5l_8h_big_uncond_dr00_dan_g_bs1():
    
    hparams = imagetransformerpp_base_10l_8h_big_uncond_dr03_dan_g()
    # TODO(trandustin): I forgot to set this in the runs! Maybe it's not used in
    # image transformer training implementation?
    # hparams.img_len = 256
    hparams.max_length = 66000  # allow for 256x256
    hparams.batch_size = 1
    hparams.num_decoder_layers = 5
    hparams.hidden_size = 128
    hparams.filter_size = 128
    hparams.attention_key_channels = 64
    hparams.attention_value_channels = 64
    hparams.layer_prepostprocess_dropout = 0.0
    return hparams
docs: For 256x256.