Add default_cfg options for min_input_size / fixed_input_size, queries in model registry, and use for testing self-attn models

tests/test_models.py

@@ -5,7 +5,8 @@ import os
 import fnmatch
 
 import timm
-from timm import list_models, create_model, set_scriptable
+from timm import list_models, create_model, set_scriptable, has_model_default_key, is_model_default_key, \
+    get_model_default_value
 
 if hasattr(torch._C, '_jit_set_profiling_executor'):
     # legacy executor is too slow to compile large models for unit tests
@@ -60,9 +61,15 @@ def test_model_backward(model_name, batch_size):
     model.eval()
 
     input_size = model.default_cfg['input_size']
+    if not is_model_default_key(model_name, 'fixed_input_size'):
+        min_input_size = get_model_default_value(model_name, 'min_input_size')
+        if min_input_size is not None:
+            input_size = min_input_size
+        else:
             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()
@@ -155,7 +162,14 @@ def test_model_forward_torchscript(model_name, batch_size):
     with set_scriptable(True):
         model = create_model(model_name, pretrained=False)
     model.eval()
+
+    if has_model_default_key(model_name, 'fixed_input_size'):
+        input_size = get_model_default_value(model_name, 'input_size')
+    elif has_model_default_key(model_name, 'min_input_size'):
+        input_size = get_model_default_value(model_name, 'min_input_size')
+    else:
         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)))
 
@@ -180,7 +194,14 @@ def test_model_forward_features(model_name, batch_size):
     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
+
+    if has_model_default_key(model_name, 'fixed_input_size'):
+        input_size = get_model_default_value(model_name, 'input_size')
+    elif has_model_default_key(model_name, 'min_input_size'):
+        input_size = get_model_default_value(model_name, 'min_input_size')
+    else:
         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):

timm/__init__.py

@@ -1,3 +1,4 @@
 from .version import __version__
 from .models import create_model, list_models, is_model, list_modules, model_entrypoint, \
-    is_scriptable, is_exportable, set_scriptable, set_exportable
+    is_scriptable, is_exportable, set_scriptable, set_exportable, has_model_default_key, is_model_default_key, \
+    get_model_default_value, is_model_pretrained

timm/models/__init__.py

@@ -40,4 +40,5 @@ from .helpers import load_checkpoint, resume_checkpoint, model_parameters
 from .layers import TestTimePoolHead, apply_test_time_pool
 from .layers import convert_splitbn_model
 from .layers import is_scriptable, is_exportable, set_scriptable, set_exportable, is_no_jit, set_no_jit
-from .registry import register_model, model_entrypoint, list_models, is_model, list_modules, is_model_in_modules
+from .registry import register_model, model_entrypoint, list_models, is_model, list_modules, is_model_in_modules,\
+    has_model_default_key, is_model_default_key, get_model_default_value, is_model_pretrained

timm/models/byoanet.py

@@ -37,23 +37,24 @@ def _cfg(url='', **kwargs):
         'url': url, 'num_classes': 1000, 'input_size': (3, 224, 224), 'pool_size': (7, 7),
         'crop_pct': 0.875, 'interpolation': 'bilinear',
         'mean': IMAGENET_DEFAULT_MEAN, 'std': IMAGENET_DEFAULT_STD,
-        'first_conv': 'stem.conv', 'classifier': 'head.fc',
+        'first_conv': 'stem.conv1.conv', 'classifier': 'head.fc',
+        'fixed_input_size': False, 'min_input_size': (3, 224, 224),
         **kwargs
     }
 
 
 default_cfgs = {
     # GPU-Efficient (ResNet) weights
-    'botnet50t_224': _cfg(url=''),
-    'botnet50t_c4c5_224': _cfg(url=''),
+    'botnet50t_224': _cfg(url='', fixed_input_size=True),
+    'botnet50t_c4c5_224': _cfg(url='', fixed_input_size=True),
 
-    'halonet_h1': _cfg(url='', input_size=(3, 256, 256), pool_size=(8, 8)),
-    'halonet_h1_c4c5': _cfg(url='', input_size=(3, 256, 256), pool_size=(8, 8)),
+    'halonet_h1': _cfg(url='', input_size=(3, 256, 256), pool_size=(8, 8), min_input_size=(3, 256, 256)),
+    'halonet_h1_c4c5': _cfg(url='', input_size=(3, 256, 256), pool_size=(8, 8), min_input_size=(3, 256, 256)),
     'halonet26t': _cfg(url=''),
     'halonet50t': _cfg(url=''),
 
-    'lambda_resnet26t': _cfg(url=''),
-    'lambda_resnet50t': _cfg(url=''),
+    'lambda_resnet26t': _cfg(url='', min_input_size=(3, 128, 128)),
+    'lambda_resnet50t': _cfg(url='', min_input_size=(3, 128, 128)),
 }
 
 

timm/models/registry.py

@@ -6,13 +6,16 @@ import sys
 import re
 import fnmatch
 from collections import defaultdict
+from copy import deepcopy
 
-__all__ = ['list_models', 'is_model', 'model_entrypoint', 'list_modules', 'is_model_in_modules']
+__all__ = ['list_models', 'is_model', 'model_entrypoint', 'list_modules', 'is_model_in_modules',
+           'is_model_default_key', 'has_model_default_key', 'get_model_default_value', 'is_model_pretrained']
 
 _module_to_models = defaultdict(set)  # dict of sets to check membership of model in module
 _model_to_module = {}  # mapping of model names to module names
 _model_entrypoints = {}  # mapping of model names to entrypoint fns
 _model_has_pretrained = set()  # set of model names that have pretrained weight url present
+_model_default_cfgs = dict()  # central repo for model default_cfgs
 
 
 def register_model(fn):
@@ -37,6 +40,7 @@ def register_model(fn):
         # this will catch all models that have entrypoint matching cfg key, but miss any aliasing
         # entrypoints or non-matching combos
         has_pretrained = 'url' in mod.default_cfgs[model_name] and 'http' in mod.default_cfgs[model_name]['url']
+        _model_default_cfgs[model_name] = deepcopy(mod.default_cfgs[model_name])
     if has_pretrained:
         _model_has_pretrained.add(model_name)
     return fn
@@ -105,3 +109,31 @@ def is_model_in_modules(model_name, module_names):
     assert isinstance(module_names, (tuple, list, set))
     return any(model_name in _module_to_models[n] for n in module_names)
 
+
+def has_model_default_key(model_name, cfg_key):
+    """ Query model default_cfgs for existence of a specific key.
+    """
+    if model_name in _model_default_cfgs and cfg_key in _model_default_cfgs[model_name]:
+        return True
+    return False
+
+
+def is_model_default_key(model_name, cfg_key):
+    """ Return truthy value for specified model default_cfg key, False if does not exist.
+    """
+    if model_name in _model_default_cfgs and _model_default_cfgs[model_name].get(cfg_key, False):
+        return True
+    return False
+
+
+def get_model_default_value(model_name, cfg_key):
+    """ Get a specific model default_cfg value by key. None if it doesn't exist.
+    """
+    if model_name in _model_default_cfgs:
+        return _model_default_cfgs[model_name].get(cfg_key, None)
+    else:
+        return None
+
+
+def is_model_pretrained(model_name):
+    return model_name in _model_has_pretrained