def test_create_variations_gpu(self):
if not torch.cuda.is_available():
return
for model_name, config in self.resnet_variants.items():
resnet = resnet_generator(model_name)
model = SimSiam(get_backbone(resnet), **config).to('cuda')
self.assertIsNotNone(model)
def test_feature_dim_configurable(self):
device = 'cuda' if torch.cuda.is_available() else 'cpu'
for model_name, config in self.resnet_variants.items():
resnet = resnet_generator(model_name)
model = SimSiam(get_backbone(resnet), **config).to(device)
# check that feature vector has correct dimension
with torch.no_grad():
out_features = model.backbone(self.input_tensor.to(device))
self.assertEqual(out_features.shape[1], config['num_ftrs'])
# check that projection head output has right dimension
with torch.no_grad():
out_projection = model.projection_mlp(out_features.squeeze())
self.assertEqual(out_projection.shape[1], config['out_dim'])
# check that prediction head output has right dimension
with torch.no_grad():
out_prediction = model.prediction_mlp(out_projection.squeeze())
self.assertEqual(out_prediction.shape[1], config['out_dim'])
def test_tuple_input(self):
device = 'cuda' if torch.cuda.is_available() else 'cpu'
for model_name, config in self.resnet_variants.items():
resnet = resnet_generator(model_name)
model = SimSiam(get_backbone(resnet), **config).to(device)
x0 = torch.rand((self.batch_size, 3, 64, 64)).to(device)
x1 = torch.rand((self.batch_size, 3, 64, 64)).to(device)
out = model(x0)
self.assertEqual(out[0].shape,
(self.batch_size, config['out_dim']))
self.assertEqual(out[1].shape,
(self.batch_size, config['out_dim']))
out, features = model(x0, return_features=True)
self.assertEqual(out[0].shape,
(self.batch_size, config['out_dim']))
self.assertEqual(out[1].shape,
(self.batch_size, config['out_dim']))
self.assertEqual(features.shape,
(self.batch_size, config['num_ftrs']))
out0, out1 = model(x0, x1)
self.assertEqual(out0[0].shape,
(self.batch_size, config['out_dim']))
self.assertEqual(out0[1].shape,
(self.batch_size, config['out_dim']))
self.assertEqual(out1[0].shape,
(self.batch_size, config['out_dim']))
self.assertEqual(out1[1].shape,
(self.batch_size, config['out_dim']))
(out0, f0), (out1, f1) = model(x0, x1, return_features=True)
self.assertEqual(out0[0].shape,
(self.batch_size, config['out_dim']))
self.assertEqual(out0[1].shape,
(self.batch_size, config['out_dim']))
self.assertEqual(out1[0].shape,
(self.batch_size, config['out_dim']))
self.assertEqual(out1[1].shape,
(self.batch_size, config['out_dim']))
self.assertEqual(f0.shape, (self.batch_size, config['num_ftrs']))
self.assertEqual(f1.shape, (self.batch_size, config['num_ftrs']))
def test_create_variations_cpu(self):
for model_name, config in self.resnet_variants.items():
resnet = resnet_generator(model_name)
model = SimSiam(get_backbone(resnet), **config)
self.assertIsNotNone(model)