mirror of
https://github.com/open-mmlab/mmpretrain.git
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59 lines
1.5 KiB
Python
59 lines
1.5 KiB
Python
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# Copyright (c) OpenMMLab. All rights reserved.
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import platform
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import pytest
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import torch
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from mmpretrain.models import MoCo
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from mmpretrain.structures import DataSample
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queue_len = 32
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feat_dim = 2
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momentum = 0.001
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backbone = dict(type='ResNet', depth=18, norm_cfg=dict(type='BN'))
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neck = dict(
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type='MoCoV2Neck',
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in_channels=512,
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hid_channels=2,
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out_channels=2,
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with_avg_pool=True)
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head = dict(
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type='ContrastiveHead',
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loss=dict(type='CrossEntropyLoss'),
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temperature=0.2)
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@pytest.mark.skipif(platform.system() == 'Windows', reason='Windows mem limit')
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def test_moco():
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data_preprocessor = {
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'mean': (123.675, 116.28, 103.53),
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'std': (58.395, 57.12, 57.375),
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'to_rgb': True
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}
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alg = MoCo(
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backbone=backbone,
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neck=neck,
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head=head,
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queue_len=queue_len,
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feat_dim=feat_dim,
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momentum=momentum,
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data_preprocessor=data_preprocessor)
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assert alg.queue.size() == torch.Size([feat_dim, queue_len])
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fake_data = {
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'inputs':
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[torch.randn((2, 3, 224, 224)),
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torch.randn((2, 3, 224, 224))],
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'data_samples': [DataSample() for _ in range(2)]
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}
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fake_inputs = alg.data_preprocessor(fake_data)
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fake_loss = alg(**fake_inputs, mode='loss')
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assert fake_loss['loss'] > 0
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assert alg.queue_ptr.item() == 2
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# test extract
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fake_feats = alg(fake_inputs['inputs'][0], mode='tensor')
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assert fake_feats[0].size() == torch.Size([2, 512, 7, 7])
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