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705ed2be49
* fix mlti-gpu bug in retrevel * fix bugs(cannot load vecs in dist and diff test-val recall\) * load weight each process
32 lines
1007 B
Python
32 lines
1007 B
Python
# Copyright (c) OpenMMLab. All rights reserved
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import warnings
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from mmengine.hooks import Hook
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from mmengine.model import is_model_wrapper
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from mmcls.models import BaseRetriever
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from mmcls.registry import HOOKS
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@HOOKS.register_module()
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class PrepareProtoBeforeValLoopHook(Hook):
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"""The hook to prepare the prototype in retrievers.
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Since the encoders of the retriever changes during training, the prototype
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changes accordingly. So the `prototype_vecs` needs to be regenerated before
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validation loop.
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"""
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def before_val(self, runner) -> None:
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model = runner.model
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if is_model_wrapper(model):
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model = model.module
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if isinstance(model, BaseRetriever):
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if hasattr(model, 'prepare_prototype'):
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model.prepare_prototype()
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else:
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warnings.warn(
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'Only the `mmcls.models.retrievers.BaseRetriever` can execute '
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f'`PrepareRetrieverPrototypeHook`, but got `{type(model)}`')
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