GPT-Neo ONNX export (#12911)

GPT-Neo ONNX export and task / feature refactoring
Authored-by: Michael Benayoun <michael@huggingface.co>

src/transformers/models/gpt_neo/__init__.py

@@ -21,7 +21,7 @@ from ...file_utils import _LazyModule, is_flax_available, is_torch_available
 
 
 _import_structure = {
-    "configuration_gpt_neo": ["GPT_NEO_PRETRAINED_CONFIG_ARCHIVE_MAP", "GPTNeoConfig"],
+    "configuration_gpt_neo": ["GPT_NEO_PRETRAINED_CONFIG_ARCHIVE_MAP", "GPTNeoConfig", "GPTNeoOnnxConfig"],
 }
 
 if is_torch_available():
@@ -43,7 +43,7 @@ if is_flax_available():
 
 
 if TYPE_CHECKING:
-    from .configuration_gpt_neo import GPT_NEO_PRETRAINED_CONFIG_ARCHIVE_MAP, GPTNeoConfig
+    from .configuration_gpt_neo import GPT_NEO_PRETRAINED_CONFIG_ARCHIVE_MAP, GPTNeoConfig, GPTNeoOnnxConfig
 
     if is_torch_available():
         from .modeling_gpt_neo import (

src/transformers/models/gpt_neo/configuration_gpt_neo.py

@@ -14,7 +14,12 @@
 # limitations under the License.
 """ GPT Neo model configuration """
 
+from collections import OrderedDict
+from typing import Any, Mapping, Optional
+
+from ... import PreTrainedTokenizer, TensorType, is_torch_available
 from ...configuration_utils import PretrainedConfig
+from ...onnx import OnnxConfigWithPast, PatchingSpec
 from ...utils import logging
 
 
@@ -173,3 +178,140 @@ class GPTNeoConfig(PretrainedConfig):
     @property
     def num_hidden_layers(self):
         return self.num_layers
+
+
+def custom_unfold(input, dimension, size, step):
+    """Custom torch.Tensor.unfold implementation to enable the export to ONNX."""
+    import torch
+
+    shape = input.size()
+    rank = len(shape)
+    sizedim = shape[dimension]
+
+    low_indices = torch.arange(0, sizedim, step)
+    min_length = torch.div(sizedim - size, step, rounding_mode="floor") + 1
+    indices = torch.arange(size) + low_indices[:min_length][:, None]
+
+    s = [slice(None)] * rank
+    s[dimension] = indices
+    sliced = input[s]
+
+    perm = list(range(0, rank + 1))
+    perm.append(perm.pop(dimension + 1))
+
+    return sliced.permute(perm)
+
+
+def custom_get_block_length_and_num_blocks(seq_length, window_size):
+    """
+    Custom implementation for GPTNeoAttentionMixin._get_block_length_and_num_blocks to enable the export to ONNX as
+    original implmentation uses Python variables and control flow.
+    """
+    import torch
+
+    candidates = torch.arange(1, window_size)
+    remainders = torch.remainder(seq_length, candidates)
+    divisor_indices = remainders == 0
+    divisors = candidates[divisor_indices]
+    largest_divisor = torch.max(divisors)
+    return largest_divisor, torch.div(seq_length, largest_divisor, rounding_mode="floor")
+
+
+class GPTNeoOnnxConfig(OnnxConfigWithPast):
+    def __init__(self, config: PretrainedConfig, task: str = "default", use_past: bool = False):
+        if is_torch_available():
+            import torch
+
+            from .modeling_gpt_neo import GPTNeoAttentionMixin
+
+            patching_specs = [
+                PatchingSpec(torch.Tensor, name="unfold", custom_op=custom_unfold),
+                PatchingSpec(
+                    GPTNeoAttentionMixin,
+                    name="_get_block_length_and_num_blocks",
+                    custom_op=custom_get_block_length_and_num_blocks,
+                    op_wrapper=staticmethod,
+                ),
+            ]
+
+        super().__init__(config, task=task, patching_specs=patching_specs, use_past=use_past)
+
+        self._num_local_attention = len([type_ for type_ in self._config.attention_layers if type_ == "local"])
+        self._key_values_dynamic_axis = []
+        for i in range(self._config.num_layers):
+            if self._config.attention_layers[i] == "local":
+                self._key_values_dynamic_axis.append({0: "batch", 1: "sequence"})
+            else:
+                self._key_values_dynamic_axis.append({0: "batch", 2: "sequence"})
+                self._key_values_dynamic_axis.append({0: "batch", 2: "sequence"})
+
+    @property
+    def _number_key_values(self):
+        return (self._config.num_layers * 2) - self._num_local_attention
+
+    @property
+    def inputs(self) -> Mapping[str, Mapping[int, str]]:
+        common_inputs = OrderedDict({"input_ids": {0: "batch", 1: "sequence"}})
+        if self.use_past:
+            for i in range(self._number_key_values):
+                common_inputs[f"past_key_values.{i}"] = self._key_values_dynamic_axis[i]
+
+        common_inputs["attention_mask"] = {0: "batch", 1: "sequence"}
+
+        return common_inputs
+
+    @property
+    def outputs(self) -> Mapping[str, Mapping[int, str]]:
+        common_outputs = super().outputs
+        if self.use_past:
+            for i in range(self._number_key_values):
+                common_outputs[f"present.{i}"] = self._key_values_dynamic_axis[i]
+
+        return common_outputs
+
+    def generate_dummy_inputs(
+        self,
+        tokenizer: PreTrainedTokenizer,
+        batch_size: int = -1,
+        seq_length: int = -1,
+        is_pair: bool = False,
+        framework: Optional[TensorType] = None,
+    ) -> Mapping[str, Any]:
+        common_inputs = super().generate_dummy_inputs(tokenizer, batch_size, seq_length, is_pair, framework)
+
+        # We need to order the input in the way they appears in the forward()
+        ordered_inputs = OrderedDict({"input_ids": common_inputs["input_ids"]})
+
+        batch = common_inputs["input_ids"].shape[0]
+        past_shapes = {
+            "global": (batch, self._config.num_heads, 1, self._config.hidden_size // self._config.num_attention_heads),
+            "local": (batch, 1, self._config.hidden_size),
+        }
+
+        # Need to add the past_keys
+        if self.use_past:
+            if not is_torch_available():
+                raise ValueError("Cannot generate dummy past_keys inputs without PyTorch installed.")
+            else:
+                import torch
+
+                ordered_inputs["past_key_values"] = []
+                for i in range(self._config.num_layers):
+                    attention_type = self._config.attention_layers[i]
+                    if attention_type == "global":
+                        ordered_inputs["past_key_values"].append(
+                            (
+                                torch.zeros(past_shapes[attention_type]),
+                                torch.zeros(past_shapes[attention_type]),
+                            )
+                        )
+                    else:
+                        ordered_inputs["past_key_values"].append((torch.zeros(past_shapes[attention_type]),))
+
+        ordered_inputs["attention_mask"] = common_inputs["attention_mask"]
+        if self.use_past:
+            ordered_inputs["attention_mask"] = torch.cat(
+                [ordered_inputs["attention_mask"], torch.zeros(batch, 1)], dim=1
+            )
+
+        return ordered_inputs

src/transformers/models/gpt_neo/modeling_gpt_neo.py

@@ -1121,7 +1121,7 @@ class GPTNeoForSequenceClassification(GPTNeoPreTrainedModel):
                     f"unexpected if using padding tokens in conjunction with `inputs_embeds.`"
                 )
 
-        pooled_logits = logits[range(batch_size), sequence_lengths]
+        pooled_logits = logits[torch.arange(batch_size), sequence_lengths]
 
         loss = None
         if labels is not None:

src/transformers/onnx/__init__.py

@@ -13,6 +13,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from .config import EXTERNAL_DATA_FORMAT_SIZE_LIMIT, OnnxConfig, OnnxConfigWithPast
+from .config import EXTERNAL_DATA_FORMAT_SIZE_LIMIT, OnnxConfig, OnnxConfigWithPast, PatchingSpec
 from .convert import export, validate_model_outputs
 from .utils import ParameterFormat, compute_serialized_parameters_size

src/transformers/onnx/__main__.py

@@ -14,101 +14,22 @@
 
 from argparse import ArgumentParser
 from pathlib import Path
-from typing import Callable, Tuple
 
-from transformers.models.albert import AlbertOnnxConfig
 from transformers.models.auto import AutoTokenizer
-from transformers.models.bart import BartOnnxConfig
-from transformers.models.bert import BertOnnxConfig
-from transformers.models.distilbert import DistilBertOnnxConfig
-from transformers.models.gpt2 import GPT2OnnxConfig
-from transformers.models.longformer import LongformerOnnxConfig
-from transformers.models.roberta import RobertaOnnxConfig
-from transformers.models.t5 import T5OnnxConfig
-from transformers.models.xlm_roberta import XLMRobertaOnnxConfig
 
-from .. import is_torch_available
 from ..utils import logging
 from .convert import export, validate_model_outputs
-
-
-if is_torch_available():
-    from transformers import AutoModel, PreTrainedModel
-
-    FEATURES_TO_AUTOMODELS = {
-        "default": AutoModel,
-    }
-
-
-# Set of model topologies we support associated to the features supported by each topology and the factory
-SUPPORTED_MODEL_KIND = {
-    "albert": {"default": AlbertOnnxConfig.default},
-    "bart": {"default": BartOnnxConfig.default},
-    "bert": {"default": BertOnnxConfig.default},
-    "distilbert": {"default": DistilBertOnnxConfig.default},
-    "gpt2": {"default": GPT2OnnxConfig.default},
-    "longformer": {"default": LongformerOnnxConfig.default},
-    "roberta": {"default": RobertaOnnxConfig},
-    "t5": {"default": T5OnnxConfig.default},
-    "xlm-roberta": {"default": XLMRobertaOnnxConfig.default},
-}
-
-
-def get_model_from_features(features: str, model: str):
-    """
-    Attempt to retrieve a model from a model's name and the features to be enabled.
-
-    Args:
-        features: The features required
-        model: The name of the model to export
-
-    Returns:
-
-    """
-    if features not in FEATURES_TO_AUTOMODELS:
-        raise KeyError(f"Unknown feature: {features}." f"Possible values are {list(FEATURES_TO_AUTOMODELS.values())}")
-
-    return FEATURES_TO_AUTOMODELS[features].from_pretrained(model)
-
-
-def check_supported_model_or_raise(model: PreTrainedModel, features: str = "default") -> Tuple[str, Callable]:
-    """
-    Check whether or not the model has the requested features
-
-    Args:
-        model: The model to export
-        features: The name of the features to check if they are avaiable
-
-    Returns:
-        (str) The type of the model (OnnxConfig) The OnnxConfig instance holding the model export properties
-
-    """
-    if model.config.model_type not in SUPPORTED_MODEL_KIND:
-        raise KeyError(
-            f"{model.config.model_type} ({model.name}) is not supported yet. "
-            f"Only {SUPPORTED_MODEL_KIND} are supported. "
-            f"If you want to support ({model.config.model_type}) please propose a PR or open up an issue."
-        )
-
-    # Look for the features
-    model_features = SUPPORTED_MODEL_KIND[model.config.model_type]
-    if features not in model_features:
-        raise ValueError(
-            f"{model.config.model_type} doesn't support features {features}. "
-            f"Supported values are: {list(model_features.keys())}"
-        )
-
-    return model.config.model_type, SUPPORTED_MODEL_KIND[model.config.model_type][features]
+from .features import FeaturesManager
 
 
 def main():
     parser = ArgumentParser("Hugging Face ONNX Exporter tool")
     parser.add_argument("-m", "--model", type=str, required=True, help="Model's name of path on disk to load.")
     parser.add_argument(
-        "--features",
-        choices=["default"],
+        "--feature",
+        choices=list(FeaturesManager.AVAILABLE_FEATURES),
         default="default",
-        help="Export the model with some additional features.",
+        help="Export the model with some additional feature.",
     )
     parser.add_argument(
         "--opset", type=int, default=12, help="ONNX opset version to export the model with (default 12)."
@@ -127,8 +48,8 @@ def main():
 
     # Allocate the model
     tokenizer = AutoTokenizer.from_pretrained(args.model)
-    model = get_model_from_features(args.features, args.model)
-    model_kind, model_onnx_config = check_supported_model_or_raise(model, features=args.features)
+    model = FeaturesManager.get_model_from_feature(args.feature, args.model)
+    model_kind, model_onnx_config = FeaturesManager.check_supported_model_or_raise(model, feature=args.feature)
     onnx_config = model_onnx_config(model.config)
 
     # Ensure the requested opset is sufficient

src/transformers/onnx/config.py

@@ -11,9 +11,10 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+import dataclasses
 from abc import ABC, abstractmethod
 from collections import OrderedDict
-from typing import Any, Mapping, Optional
+from typing import Any, Callable, List, Mapping, Optional
 
 from transformers import PretrainedConfig, PreTrainedTokenizer, TensorType
 
@@ -26,6 +27,27 @@ DEFAULT_ONNX_OPSET = 11
 EXTERNAL_DATA_FORMAT_SIZE_LIMIT = 2 * 1024 * 1024 * 1024
 
 
+@dataclasses.dataclass
+class PatchingSpec:
+    """
+    Data class that holds patching specifications.
+
+    Args:
+        o: Module / object where the op to patch is located
+        name: Name of the op to monkey patch
+        custom_op: Custom op that patches the original op
+        orig_op: Original op that is being patched
+        op_wrapper: Wrapper (optional) that wraps both the original and custom ops.
+            It is useful for ops that are class or static methods for instance.
+    """
+
+    o: Any
+    name: str
+    custom_op: Callable
+    orig_op: Optional[Callable] = None
+    op_wrapper: Optional[Callable] = None
+
+
 class OnnxConfig(ABC):
     """
     Base class for ONNX exportable model describing metadata on how to export the model through the ONNX format.
@@ -34,11 +56,38 @@ class OnnxConfig(ABC):
     DEFAULT_FIXED_BATCH = 2
     DEFAULT_FIXED_SEQUENCE = 8
 
-    def __init__(self, config: PretrainedConfig):
+    _TASKS_TO_COMMON_OUTPUTS = {
+        "default": OrderedDict({"last_hidden_state": {0: "batch", 1: "sequence"}}),
+        "causal-lm": OrderedDict({"logits": {0: "batch", 1: "sequence"}}),
+        "sequence-classification": OrderedDict({"logits": {0: "batch"}}),
+        "token-classification": OrderedDict({"logits": {0: "batch", 1: "sequence"}}),
+        "multiple-choice": OrderedDict({"logits": {0: "batch"}}),
+        "question-answering": OrderedDict(
+            {
+                "start_logits": {0: "batch", 1: "sequence"},
+                "end_logits": {0: "batch", 1: "sequence"},
+            }
+        ),
+    }
+
+    def __init__(self, config: PretrainedConfig, task: str = "default", patching_specs: List[PatchingSpec] = None):
         self._config = config
 
+        if task not in self._TASKS_TO_COMMON_OUTPUTS:
+            raise ValueError(
+                f"{task} is not a supported task, supported tasks: {self._TASKS_TO_COMMON_OUTPUTS.keys()}"
+            )
+        self.task = task
+
+        self._patching_specs = []
+        for spec in patching_specs if patching_specs is not None else []:
+            final_spec = spec
+            if spec.orig_op is None:
+                final_spec = dataclasses.replace(spec, orig_op=getattr(spec.o, spec.name))
+            self._patching_specs.append(final_spec)
+
     @classmethod
-    def default(cls, config: PretrainedConfig) -> "OnnxConfig":
+    def from_model_config(cls, config: PretrainedConfig, task: str = "default") -> "OnnxConfig":
         """
         Instantiate a OnnxConfig for a specific model
 
@@ -48,7 +97,7 @@ class OnnxConfig(ABC):
         Returns:
             OnnxConfig for this model
         """
-        return cls(config)
+        return cls(config, task=task)
 
     @property
     @abstractmethod
@@ -62,7 +111,6 @@ class OnnxConfig(ABC):
         raise NotImplementedError()
 
     @property
-    @abstractmethod
     def outputs(self) -> Mapping[str, Mapping[int, str]]:
         """
         Mapping containing the axis definition of the output tensors to provide to the model
@@ -70,7 +118,7 @@ class OnnxConfig(ABC):
         Returns:
             For each output: its name associated to the axes symbolic name and the axis position within the tensor
         """
-        raise NotImplementedError()
+        return self._TASKS_TO_COMMON_OUTPUTS[self.task]
 
     @property
     def values_override(self) -> Optional[Mapping[str, Any]]:
@@ -170,14 +218,30 @@ class OnnxConfig(ABC):
         dummy_input = [" ".join([tokenizer.unk_token]) * seq_length] * batch_size
         return dict(tokenizer(dummy_input, return_tensors=framework))
 
+    def patch_ops(self):
+        for spec in self._patching_specs:
+            custom_op = spec.custom_op if spec.op_wrapper is None else spec.op_wrapper(spec.custom_op)
+            setattr(spec.o, spec.name, custom_op)
+
+    def restore_ops(self):
+        for spec in self._patching_specs:
+            orig_op = spec.orig_op if spec.op_wrapper is None else spec.op_wrapper(spec.orig_op)
+            setattr(spec.o, spec.name, orig_op)
+
 
 class OnnxConfigWithPast(OnnxConfig, ABC):
-    def __init__(self, config: PretrainedConfig, use_past: bool = False):
-        super().__init__(config)
+    def __init__(
+        self,
+        config: PretrainedConfig,
+        task: str = "default",
+        patching_specs: List[PatchingSpec] = None,
+        use_past: bool = False,
+    ):
+        super().__init__(config, task=task, patching_specs=patching_specs)
         self.use_past = use_past
 
     @classmethod
-    def with_past(cls, config: PretrainedConfig) -> "OnnxConfigWithPast":
+    def with_past(cls, config: PretrainedConfig, task: str = "default") -> "OnnxConfigWithPast":
         """
         Instantiate a OnnxConfig with `use_past` attribute set to True
 
@@ -187,7 +251,7 @@ class OnnxConfigWithPast(OnnxConfig, ABC):
         Returns:
             OnnxConfig with `.use_past = True`
         """
-        return cls(config, use_past=True)
+        return cls(config, task=task, use_past=True)
 
     @property
     def values_override(self) -> Optional[Mapping[str, Any]]:

src/transformers/onnx/convert.py

@@ -111,6 +111,8 @@ def export(
     if not inputs_match:
         raise ValueError("Model and config inputs doesn't match")
 
+    config.patch_ops()
+
     # export can works with named args but the dict containing named args as to be last element of the args tuple
     export(
         model,
@@ -125,6 +127,8 @@ def export(
         opset_version=opset,
     )
 
+    config.restore_ops()
+
     return matched_inputs, onnx_outputs
 
 
@@ -140,6 +144,8 @@ def validate_model_outputs(
 
     logger.info("Validating ONNX model...")
 
+    # TODO: generate inputs with a different batch_size and seq_len that was used for conversion to properly test
+    # dynamic input shapes.
     reference_model_inputs = config.generate_dummy_inputs(tokenizer, framework=TensorType.PYTORCH)
 
     # Create ONNX Runtime session
@@ -152,6 +158,10 @@ def validate_model_outputs(
 
     # We flatten potential collection of outputs (i.e. past_keys) to a flat structure
     for name, value in ref_outputs.items():
+        # Overwriting the output name as "present" since it is the name used for the ONNX ouputs
+        # ("past_key_values" being taken for the ONNX inputs)
+        if name == "past_key_values":
+            name = "present"
         if isinstance(value, (list, tuple)):
             value = flatten_output_collection_property(name, value)
             ref_outputs_dict.update(value)
@@ -186,7 +196,7 @@ def validate_model_outputs(
 
     # Check the shape and values match
     for name, ort_value in zip(onnx_named_outputs, onnx_outputs):
-        ref_value = ref_outputs_dict[name].numpy()
+        ref_value = ref_outputs_dict[name].detach().numpy()
         logger.info(f'\t- Validating ONNX Model output "{name}":')
 
         # Shape
@@ -197,7 +207,7 @@ def validate_model_outputs(
                 f"Got {ref_value.shape} (reference) and {ort_value.shape} (ONNX)"
             )
         else:
-            logger.info(f"\t\t-[✓] {ort_value.shape} matchs {ref_value.shape}")
+            logger.info(f"\t\t-[✓] {ort_value.shape} matches {ref_value.shape}")
 
         # Values
         if not np.allclose(ref_value, ort_value, atol=atol):

src/transformers/onnx/features.py

+from functools import partial, reduce
+from typing import Callable, Tuple
+
+from .. import is_torch_available
+from ..models.albert import AlbertOnnxConfig
+from ..models.bart import BartOnnxConfig
+from ..models.bert import BertOnnxConfig
+from ..models.distilbert import DistilBertOnnxConfig
+from ..models.gpt2 import GPT2OnnxConfig
+from ..models.gpt_neo import GPTNeoOnnxConfig
+from ..models.longformer import LongformerOnnxConfig
+from ..models.roberta import RobertaOnnxConfig
+from ..models.t5 import T5OnnxConfig
+from ..models.xlm_roberta import XLMRobertaOnnxConfig
+
+
+if is_torch_available():
+    from transformers import PreTrainedModel
+    from transformers.models.auto import (
+        AutoModel,
+        AutoModelForCausalLM,
+        AutoModelForMultipleChoice,
+        AutoModelForQuestionAnswering,
+        AutoModelForSequenceClassification,
+        AutoModelForTokenClassification,
+    )
+
+
+def supported_features_mapping(*supported_features, onnx_config_cls=None):
+    """Generates the mapping between supported features and their corresponding OnnxConfig."""
+    if onnx_config_cls is None:
+        raise ValueError("A OnnxConfig class must be provided")
+
+    mapping = {}
+    for feature in supported_features:
+        if "-with-past" in feature:
+            task = feature.replace("-with-past", "")
+            mapping[feature] = partial(onnx_config_cls.with_past, task=task)
+        else:
+            mapping[feature] = partial(onnx_config_cls.from_model_config, task=feature)
+
+    return mapping
+
+
+class FeaturesManager:
+    _TASKS_TO_AUTOMODELS = {
+        "default": AutoModel,
+        "causal-lm": AutoModelForCausalLM,
+        "sequence-classification": AutoModelForSequenceClassification,
+        "token-classification": AutoModelForTokenClassification,
+        "multiple-choice": AutoModelForMultipleChoice,
+        "question-answering": AutoModelForQuestionAnswering,
+    }
+
+    # Set of model topologies we support associated to the features supported by each topology and the factory
+    _SUPPORTED_MODEL_KIND = {
+        "albert": supported_features_mapping("default", onnx_config_cls=AlbertOnnxConfig),
+        "bart": supported_features_mapping("default", onnx_config_cls=BartOnnxConfig),
+        "bert": supported_features_mapping("default", onnx_config_cls=BertOnnxConfig),
+        "distilbert": supported_features_mapping("default", onnx_config_cls=DistilBertOnnxConfig),
+        "gpt2": supported_features_mapping("default", onnx_config_cls=GPT2OnnxConfig),
+        "longformer": supported_features_mapping("default", onnx_config_cls=LongformerOnnxConfig),
+        "roberta": supported_features_mapping("default", onnx_config_cls=RobertaOnnxConfig),
+        "t5": supported_features_mapping("default", onnx_config_cls=T5OnnxConfig),
+        "xlm-roberta": supported_features_mapping("default", onnx_config_cls=XLMRobertaOnnxConfig),
+        "gpt-neo": supported_features_mapping(
+            "default",
+            "causal-lm",
+            "sequence-classification",
+            "default-with-past",
+            "causal-lm-with-past",
+            "sequence-classification-with-past",
+            onnx_config_cls=GPTNeoOnnxConfig,
+        ),
+    }
+
+    AVAILABLE_FEATURES = sorted(reduce(lambda s1, s2: s1 | s2, (v.keys() for v in _SUPPORTED_MODEL_KIND.values())))
+
+    @staticmethod
+    def feature_to_task(feature: str) -> str:
+        return feature.replace("-with-past", "")
+
+    @staticmethod
+    def get_model_from_feature(feature: str, model: str):
+        """
+        Attempt to retrieve a model from a model's name and the feature to be enabled.
+
+        Args:
+            feature: The feature required
+            model: The name of the model to export
+
+        Returns:
+
+        """
+        task = FeaturesManager.feature_to_task(feature)
+        if task not in FeaturesManager._TASKS_TO_AUTOMODELS:
+            raise KeyError(
+                f"Unknown task: {feature}."
+                f"Possible values are {list(FeaturesManager._TASKS_TO_AUTOMODELS.values())}"
+            )
+
+        return FeaturesManager._TASKS_TO_AUTOMODELS[task].from_pretrained(model)
+
+    @staticmethod
+    def check_supported_model_or_raise(model: PreTrainedModel, feature: str = "default") -> Tuple[str, Callable]:
+        """
+        Check whether or not the model has the requested features
+
+        Args:
+            model: The model to export
+            feature: The name of the feature to check if it is avaiable
+
+        Returns:
+            (str) The type of the model (OnnxConfig) The OnnxConfig instance holding the model export properties
+
+        """
+        model_type = model.config.model_type.replace("_", "-")
+        model_name = getattr(model, "name", "")
+        model_name = f"({model_name})" if model_name else ""
+        if model_type not in FeaturesManager._SUPPORTED_MODEL_KIND:
+            raise KeyError(
+                f"{model.config.model_type} ({model_name}) is not supported yet. "
+                f"Only {FeaturesManager._SUPPORTED_MODEL_KIND} are supported. "
+                f"If you want to support ({model.config.model_type}) please propose a PR or open up an issue."
+            )
+
+        # Look for the features
+        model_features = FeaturesManager._SUPPORTED_MODEL_KIND[model_type]
+        if feature not in model_features:
+            raise ValueError(
+                f"{model.config.model_type} doesn't support feature {feature}. "
+                f"Supported values are: {list(model_features.keys())}"
+            )
+
+        return model.config.model_type, FeaturesManager._SUPPORTED_MODEL_KIND[model_type][feature]

tests/test_onnx_v2.py

@@ -9,6 +9,7 @@ from transformers import (  # LongformerConfig,; T5Config,
     BartConfig,
     DistilBertConfig,
     GPT2Config,
+    GPTNeoConfig,
     RobertaConfig,
     XLMRobertaConfig,
     is_torch_available,
@@ -20,6 +21,7 @@ from transformers.models.distilbert import DistilBertOnnxConfig
 
 # from transformers.models.longformer import LongformerOnnxConfig
 from transformers.models.gpt2 import GPT2OnnxConfig
+from transformers.models.gpt_neo import GPTNeoOnnxConfig
 from transformers.models.roberta import RobertaOnnxConfig
 
 # from transformers.models.t5 import T5OnnxConfig
@@ -151,7 +153,8 @@ class OnnxConfigWithPastTestCaseV2(TestCase):
         for name, config in OnnxConfigWithPastTestCaseV2.SUPPORTED_WITH_PAST_CONFIGS:
             with self.subTest(name):
                 self.assertFalse(
-                    OnnxConfigWithPast.default(config()).use_past, "OnnxConfigWithPast.default() should not use_past"
+                    OnnxConfigWithPast.from_model_config(config()).use_past,
+                    "OnnxConfigWithPast.from_model_config() should not use_past",
                 )
 
                 self.assertTrue(
@@ -167,7 +170,7 @@ class OnnxConfigWithPastTestCaseV2(TestCase):
             with self.subTest(name):
 
                 # without past
-                onnx_config_default = OnnxConfigWithPast.default(config())
+                onnx_config_default = OnnxConfigWithPast.from_model_config(config())
                 self.assertIsNotNone(onnx_config_default.values_override, "values_override should not be None")
                 self.assertIn("use_cache", onnx_config_default.values_override, "use_cache should be present")
                 self.assertFalse(
@@ -190,6 +193,7 @@ if is_torch_available():
         BertModel,
         DistilBertModel,
         GPT2Model,
+        GPTNeoModel,
         RobertaModel,
         XLMRobertaModel,
     )
@@ -200,6 +204,7 @@ if is_torch_available():
         ("BERT", "bert-base-cased", BertModel, BertConfig, BertOnnxConfig),
         ("DistilBERT", "distilbert-base-cased", DistilBertModel, DistilBertConfig, DistilBertOnnxConfig),
         ("GPT2", "gpt2", GPT2Model, GPT2Config, GPT2OnnxConfig),
+        ("GPT-Neo", "EleutherAI/gpt-neo-125M", GPTNeoModel, GPTNeoConfig, GPTNeoOnnxConfig),
         # ("LongFormer", "longformer-base-4096", LongformerModel, LongformerConfig, LongformerOnnxConfig),
         ("Roberta", "roberta-base", RobertaModel, RobertaConfig, RobertaOnnxConfig),
         ("XLM-Roberta", "roberta-base", XLMRobertaModel, XLMRobertaConfig, XLMRobertaOnnxConfig),