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40 lines
1.5 KiB
40 lines
1.5 KiB
# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from visualdl import LogWriter
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from . import extension
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from ..updaters.trainer import Trainer
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class VisualDL(extension.Extension):
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"""A wrapper of visualdl log writer. It assumes that the metrics to be visualized
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are all scalars which are recorded into the `.observation` dictionary of the
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trainer object. The dictionary is created for each step, thus the visualdl log
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writer uses the iteration from the updater's `iteration` as the global step to
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add records.
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"""
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trigger = (1, 'iteration')
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default_name = 'visualdl'
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priority = extension.PRIORITY_READER
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def __init__(self, output_dir):
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self.writer = LogWriter(str(output_dir))
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def __call__(self, trainer: Trainer):
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for k, v in trainer.observation.items():
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self.writer.add_scalar(k, v, step=trainer.updater.state.iteration)
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def finalize(self, trainer):
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self.writer.close()
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