76 lines
2.2 KiB
Python
76 lines
2.2 KiB
Python
# Copyright (c) OpenMMLab. All rights reserved.
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import argparse
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import os.path as osp
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from collections import OrderedDict
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import mmengine
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import torch
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from mmengine.runner import CheckpointLoader
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def convert_deit3(ckpt):
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new_ckpt = OrderedDict()
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for k, v in list(ckpt.items()):
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new_v = v
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if k.startswith('head'):
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new_k = k.replace('head.', 'head.layers.head.')
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new_ckpt[new_k] = new_v
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continue
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elif k.startswith('patch_embed'):
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if 'proj.' in k:
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new_k = k.replace('proj.', 'projection.')
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else:
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new_k = k
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elif k.startswith('blocks'):
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new_k = k.replace('blocks.', 'layers.')
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if 'norm1' in k:
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new_k = new_k.replace('norm1', 'ln1')
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elif 'norm2' in k:
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new_k = new_k.replace('norm2', 'ln2')
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elif 'mlp.fc1' in k:
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new_k = new_k.replace('mlp.fc1', 'ffn.layers.0.0')
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elif 'mlp.fc2' in k:
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new_k = new_k.replace('mlp.fc2', 'ffn.layers.1')
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elif 'gamma_1' in k:
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new_k = new_k.replace('gamma_1', 'attn.gamma1.weight')
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elif 'gamma_2' in k:
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new_k = new_k.replace('gamma_2', 'ffn.gamma2.weight')
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elif k.startswith('norm'):
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new_k = k.replace('norm', 'ln1')
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else:
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new_k = k
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if not new_k.startswith('head'):
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new_k = 'backbone.' + new_k
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new_ckpt[new_k] = new_v
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return new_ckpt
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def main():
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parser = argparse.ArgumentParser(
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description='Convert keys in pretrained deit3 '
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'models to mmpretrain style.')
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parser.add_argument('src', help='src model path or url')
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# The dst path must be a full path of the new checkpoint.
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parser.add_argument('dst', help='save path')
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args = parser.parse_args()
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checkpoint = CheckpointLoader.load_checkpoint(args.src, map_location='cpu')
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if 'model' in checkpoint:
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state_dict = checkpoint['model']
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else:
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state_dict = checkpoint
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weight = convert_deit3(state_dict)
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mmengine.mkdir_or_exist(osp.dirname(args.dst))
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torch.save(weight, args.dst)
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print('Done!!')
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if __name__ == '__main__':
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main()
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