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pytorch-image-models/tests/test_models.py

176 lines
7.6 KiB

import pytest
import torch
import platform
import os
import fnmatch
import timm
from timm import list_models, create_model, set_scriptable
if hasattr(torch._C, '_jit_set_profiling_executor'):
# legacy executor is too slow to compile large models for unit tests
# no need for the fusion performance here
torch._C._jit_set_profiling_executor(True)
torch._C._jit_set_profiling_mode(False)
if 'GITHUB_ACTIONS' in os.environ: # and 'Linux' in platform.system():
# GitHub Linux runner is slower and hits memory limits sooner than MacOS, exclude bigger models
EXCLUDE_FILTERS = ['*efficientnet_l2*', '*resnext101_32x48d', 'vit_*']
else:
EXCLUDE_FILTERS = ['vit_*']
MAX_FWD_SIZE = 384
MAX_BWD_SIZE = 128
MAX_FWD_FEAT_SIZE = 448
@pytest.mark.timeout(120)
@pytest.mark.parametrize('model_name', list_models(exclude_filters=EXCLUDE_FILTERS))
@pytest.mark.parametrize('batch_size', [1])
def test_model_forward(model_name, batch_size):
"""Run a single forward pass with each model"""
model = create_model(model_name, pretrained=False)
model.eval()
input_size = model.default_cfg['input_size']
if any([x > MAX_FWD_SIZE for x in input_size]):
# cap forward test at max res 448 * 448 to keep resource down
input_size = tuple([min(x, MAX_FWD_SIZE) for x in input_size])
inputs = torch.randn((batch_size, *input_size))
outputs = model(inputs)
assert outputs.shape[0] == batch_size
assert not torch.isnan(outputs).any(), 'Output included NaNs'
@pytest.mark.timeout(120)
@pytest.mark.parametrize('model_name', list_models(exclude_filters=EXCLUDE_FILTERS))
@pytest.mark.parametrize('batch_size', [2])
def test_model_backward(model_name, batch_size):
"""Run a single forward pass with each model"""
model = create_model(model_name, pretrained=False, num_classes=42)
num_params = sum([x.numel() for x in model.parameters()])
model.eval()
input_size = model.default_cfg['input_size']
if any([x > MAX_BWD_SIZE for x in input_size]):
# cap backward test at 128 * 128 to keep resource usage down
input_size = tuple([min(x, MAX_BWD_SIZE) for x in input_size])
inputs = torch.randn((batch_size, *input_size))
outputs = model(inputs)
outputs.mean().backward()
for n, x in model.named_parameters():
assert x.grad is not None, f'No gradient for {n}'
num_grad = sum([x.grad.numel() for x in model.parameters() if x.grad is not None])
assert outputs.shape[-1] == 42
assert num_params == num_grad, 'Some parameters are missing gradients'
assert not torch.isnan(outputs).any(), 'Output included NaNs'
@pytest.mark.timeout(120)
@pytest.mark.parametrize('model_name', list_models())
@pytest.mark.parametrize('batch_size', [1])
def test_model_default_cfgs(model_name, batch_size):
"""Run a single forward pass with each model"""
model = create_model(model_name, pretrained=False)
model.eval()
state_dict = model.state_dict()
cfg = model.default_cfg
classifier = cfg['classifier']
first_conv = cfg['first_conv']
pool_size = cfg['pool_size']
input_size = model.default_cfg['input_size']
if all([x <= MAX_FWD_FEAT_SIZE for x in input_size]) and \
not any([fnmatch.fnmatch(model_name, x) for x in EXCLUDE_FILTERS]):
# output sizes only checked if default res <= 448 * 448 to keep resource down
input_size = tuple([min(x, MAX_FWD_FEAT_SIZE) for x in input_size])
input_tensor = torch.randn((batch_size, *input_size))
# test forward_features (always unpooled)
outputs = model.forward_features(input_tensor)
assert outputs.shape[-1] == pool_size[-1] and outputs.shape[-2] == pool_size[-2]
# test forward after deleting the classifier, output should be poooled, size(-1) == model.num_features
model.reset_classifier(0)
outputs = model.forward(input_tensor)
assert len(outputs.shape) == 2
assert outputs.shape[-1] == model.num_features
# test model forward without pooling and classifier
model.reset_classifier(0, '') # reset classifier and set global pooling to pass-through
outputs = model.forward(input_tensor)
assert len(outputs.shape) == 4
if not isinstance(model, timm.models.MobileNetV3):
# FIXME mobilenetv3 forward_features vs removed pooling differ
assert outputs.shape[-1] == pool_size[-1] and outputs.shape[-2] == pool_size[-2]
# check classifier and first convolution names match those in default_cfg
assert classifier + ".weight" in state_dict.keys(), f'{classifier} not in model params'
assert first_conv + ".weight" in state_dict.keys(), f'{first_conv} not in model params'
if 'GITHUB_ACTIONS' not in os.environ:
@pytest.mark.timeout(120)
@pytest.mark.parametrize('model_name', list_models(pretrained=True))
@pytest.mark.parametrize('batch_size', [1])
def test_model_load_pretrained(model_name, batch_size):
"""Create that pretrained weights load, verify support for in_chans != 3 while doing so."""
in_chans = 3 if 'pruned' in model_name else 1 # pruning not currently supported with in_chans change
create_model(model_name, pretrained=True, in_chans=in_chans)
@pytest.mark.timeout(120)
@pytest.mark.parametrize('model_name', list_models(pretrained=True))
@pytest.mark.parametrize('batch_size', [1])
def test_model_features_pretrained(model_name, batch_size):
"""Create that pretrained weights load when features_only==True."""
create_model(model_name, pretrained=True, features_only=True)
EXCLUDE_JIT_FILTERS = [
'*iabn*', 'tresnet*', # models using inplace abn unlikely to ever be scriptable
'dla*', 'hrnet*', # hopefully fix at some point
]
@pytest.mark.timeout(120)
@pytest.mark.parametrize('model_name', list_models(exclude_filters=EXCLUDE_FILTERS + EXCLUDE_JIT_FILTERS))
@pytest.mark.parametrize('batch_size', [1])
def test_model_forward_torchscript(model_name, batch_size):
"""Run a single forward pass with each model"""
with set_scriptable(True):
model = create_model(model_name, pretrained=False)
model.eval()
input_size = (3, 128, 128) # jit compile is already a bit slow and we've tested normal res already...
model = torch.jit.script(model)
outputs = model(torch.randn((batch_size, *input_size)))
assert outputs.shape[0] == batch_size
assert not torch.isnan(outputs).any(), 'Output included NaNs'
EXCLUDE_FEAT_FILTERS = [
'*pruned*', # hopefully fix at some point
]
if 'GITHUB_ACTIONS' in os.environ: # and 'Linux' in platform.system():
# GitHub Linux runner is slower and hits memory limits sooner than MacOS, exclude bigger models
EXCLUDE_FEAT_FILTERS += ['*resnext101_32x32d', '*resnext101_32x16d']
@pytest.mark.timeout(120)
@pytest.mark.parametrize('model_name', list_models(exclude_filters=EXCLUDE_FILTERS + EXCLUDE_FEAT_FILTERS))
@pytest.mark.parametrize('batch_size', [1])
def test_model_forward_features(model_name, batch_size):
"""Run a single forward pass with each model in feature extraction mode"""
model = create_model(model_name, pretrained=False, features_only=True)
model.eval()
expected_channels = model.feature_info.channels()
assert len(expected_channels) >= 4 # all models here should have at least 4 feature levels by default, some 5 or 6
input_size = (3, 96, 96) # jit compile is already a bit slow and we've tested normal res already...
outputs = model(torch.randn((batch_size, *input_size)))
assert len(expected_channels) == len(outputs)
for e, o in zip(expected_channels, outputs):
assert e == o.shape[1]
assert o.shape[0] == batch_size
assert not torch.isnan(o).any()