mirror of https://github.com/alibaba/EasyCV.git
96 lines
2.7 KiB
Python
96 lines
2.7 KiB
Python
#! -*- coding: utf8 -*-
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# Copyright (c) Alibaba, Inc. and its affiliates.
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import os
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import shutil
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import time
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import unittest
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import uuid
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import torch
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from mmcv.parallel import MMDataParallel
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from tests.ut_config import TMP_DIR_LOCAL
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from easycv.datasets import build_dataloader
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from easycv.file import io
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from easycv.hooks.byol_hook import BYOLHook
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from easycv.runner import EVRunner
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from easycv.utils.logger import get_root_logger
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class DummyDataset(object):
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def __getitem__(self, idx):
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output = {'img': [torch.randn(3, 224, 224), torch.randn(3, 224, 224)]}
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return output
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def __len__(self):
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return 4
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def _build_model():
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from easycv.models import build_model
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model = dict(
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type='BYOL',
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pretrained=None,
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base_momentum=0.996,
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backbone=dict(
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type='ResNet',
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depth=18,
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in_channels=3,
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out_indices=[4], # 0: conv-1, x: stage-x
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norm_cfg=dict(type='BN')),
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neck=dict(
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type='NonLinearNeckV2',
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in_channels=512,
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hid_channels=1024,
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out_channels=256,
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with_avg_pool=True),
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head=dict(
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type='LatentPredictHead',
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size_average=True,
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predictor=dict(
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type='NonLinearNeckV2',
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in_channels=256,
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hid_channels=1024,
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out_channels=256,
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with_avg_pool=False)))
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return build_model(model)
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class BYOLHookTest(unittest.TestCase):
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def setUp(self):
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print(('Testing %s.%s' % (type(self).__name__, self._testMethodName)))
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def test_byol_hook(self):
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work_dir = os.path.join(TMP_DIR_LOCAL, uuid.uuid4().hex)
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io.makedirs(work_dir)
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timestamp = time.strftime('%Y%m%d_%H%M%S', time.localtime())
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log_file = os.path.join(work_dir, '{}.log'.format(timestamp))
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logger = get_root_logger(log_file=log_file)
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model = _build_model()
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model = MMDataParallel(model, device_ids=[0])
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optimizer = torch.optim.SGD(model.parameters(), lr=0.02, momentum=0.95)
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runner = EVRunner(
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model=model, work_dir=work_dir, optimizer=optimizer, logger=logger)
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byol_hook = BYOLHook()
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runner.register_hook(byol_hook)
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dataset = DummyDataset()
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dataloader = build_dataloader(
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dataset, imgs_per_gpu=2, workers_per_gpu=1)
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runner.run([dataloader], [('train', 1)], 1)
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self.assertEqual(runner.model.module.momentum, 0.998)
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runner.run([dataloader], [('train', 1)], 2)
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self.assertEqual(format(runner.model.module.momentum, '.4f'), '0.9994')
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shutil.rmtree(work_dir, ignore_errors=True)
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if __name__ == '__main__':
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unittest.main()
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