code: def vit_small(patch_size=16, num_register_tokens=0, **kwargs):
      model = DinoVisionTransformer(
          patch_size=patch_size,
          embed_dim=384,
          depth=12,
          num_heads=6,
          mlp_ratio=4,
          block_fn=partial(Block, attn_class=MemEffAttention),
          num_register_tokens=num_register_tokens,
          **kwargs,
      )
      return model
  
imports: from functools import partial
  import math
  import logging
  from typing import Sequence, Tuple, Union, Callable
  import torch
  import torch.nn
  import torch.utils.checkpoint
  from torch.nn.init import trunc_normal_
  from dinov2.layers import Mlp, PatchEmbed, SwiGLUFFNFused, MemEffAttention, NestedTensorBlock
label_desc: Use image node_id 3 for calling a global function with example usage: vit_small(patch_size, num_register_tokens) and returns: model