def test_renext_bottleneck():
with pytest.raises(AssertionError):
# Style must be in ['pytorch', 'caffe']
BottleneckX(64, 64, groups=32, base_width=4, style='tensorflow')
# Test ResNeXt Bottleneck structure
block = BottleneckX(
64, 64, groups=32, base_width=4, stride=2, style='pytorch')
assert block.conv2.stride == (2, 2)
assert block.conv2.groups == 32
assert block.conv2.out_channels == 128
# Test ResNeXt Bottleneck with DCN
dcn = dict(type='DCN', deformable_groups=1, fallback_on_stride=False)
with pytest.raises(AssertionError):
# conv_cfg must be None if dcn is not None
BottleneckX(
64,
64,
groups=32,
base_width=4,
dcn=dcn,
conv_cfg=dict(type='Conv'))
BottleneckX(64, 64, dcn=dcn)
# Test ResNeXt Bottleneck forward
block = BottleneckX(64, 16, groups=32, base_width=4)
x = torch.randn(1, 64, 56, 56)
x_out = block(x)
assert x_out.shape == torch.Size([1, 64, 56, 56])
def test_renext_bottleneck():
with pytest.raises(AssertionError):
# Style must be in ['pytorch', 'caffe']
BottleneckX(64, 64, groups=32, base_width=4, style='tensorflow')
# Test ResNeXt Bottleneck structure
block = BottleneckX(64,
64,
groups=32,
base_width=4,
stride=2,
style='pytorch')
assert block.conv2.stride == (2, 2)
assert block.conv2.groups == 32
assert block.conv2.out_channels == 128
# Test ResNeXt Bottleneck with DCN
dcn = dict(type='DCN', deform_groups=1, fallback_on_stride=False)
with pytest.raises(AssertionError):
# conv_cfg must be None if dcn is not None
BottleneckX(64,
64,
groups=32,
base_width=4,
dcn=dcn,
conv_cfg=dict(type='Conv'))
BottleneckX(64, 64, dcn=dcn)
# Test ResNeXt Bottleneck forward
block = BottleneckX(64, 16, groups=32, base_width=4)
x = torch.randn(1, 64, 56, 56)
x_out = block(x)
assert x_out.shape == torch.Size([1, 64, 56, 56])
# Test ResNeXt Bottleneck forward with plugins
plugins = [
dict(cfg=dict(type='GeneralizedAttention',
spatial_range=-1,
num_heads=8,
attention_type='0010',
kv_stride=2),
stages=(False, False, True, True),
position='after_conv2')
]
block = BottleneckX(64, 16, groups=32, base_width=4, plugins=plugins)
x = torch.randn(1, 64, 56, 56)
x_out = block(x)
assert x_out.shape == torch.Size([1, 64, 56, 56])