Check TF ops for ONNX compliance

src/transformers/file_utils.py

@@ -147,6 +147,16 @@
     _faiss_available = False
 
 
+_onnx_available = (
+    importlib.util.find_spec("keras2onnx") is not None and importlib.util.find_spec("onnxruntime") is not None
+)
+try:
+    _onxx_version = importlib_metadata.version("onnx")
+    logger.debug(f"Successfully imported onnx version {_onxx_version}")
+except importlib_metadata.PackageNotFoundError:
+    _onnx_available = False
+
+
 _scatter_available = importlib.util.find_spec("torch_scatter") is not None
 try:
     _scatter_version = importlib_metadata.version("torch_scatter")
@@ -226,6 +236,10 @@ def is_tf_available():
     return _tf_available
 
 
+def is_onnx_available():
+    return _onnx_available
+
+
 def is_flax_available():
     return _flax_available
 

src/transformers/models/gpt2/modeling_tf_gpt2.py

@@ -1030,16 +1030,7 @@ def call(
                     )
                     - 1
                 )
-
-                def get_seq_element(sequence_position, input_batch):
-                    return tf.strided_slice(
-                        input_batch, [sequence_position, 0], [sequence_position + 1, input_batch.shape[-1]], [1, 1]
-                    )
-
-                result = tf.map_fn(
-                    fn=lambda t: get_seq_element(t[0], t[1]), elems=[sequence_lengths, logits], dtype="float"
-                )
-                in_logits = tf.reshape(result, [logits_shape[0], logits_shape[-1]])
+                in_logits = tf.gather(logits, sequence_lengths, batch_dims=1, axis=1)
             else:
                 sequence_lengths = -1
                 logger.warning(
@@ -1049,16 +1040,12 @@ def get_seq_element(sequence_position, input_batch):
         loss = None
 
         if inputs["labels"] is not None:
-            if input_ids is not None:
-                batch_size, sequence_length = shape_list(inputs["input_ids"])[:2]
-            else:
-                batch_size, sequence_length = shape_list(inputs["inputs_embeds"])[:2]
             assert (
-                self.config.pad_token_id is not None or batch_size == 1
+                self.config.pad_token_id is not None or logits_shape[0] == 1
             ), "Cannot handle batch sizes > 1 if no padding token is defined."
 
             if not tf.is_tensor(sequence_lengths):
-                in_logits = logits[0:batch_size, sequence_lengths]
+                in_logits = logits[0 : logits_shape[0], sequence_lengths]
 
             loss = self.compute_loss(tf.reshape(inputs["labels"], [-1]), tf.reshape(in_logits, [-1, self.num_labels]))
         pooled_logits = in_logits if in_logits is not None else logits

src/transformers/testing_utils.py

@@ -28,6 +28,7 @@
     is_datasets_available,
     is_faiss_available,
     is_flax_available,
+    is_onnx_available,
     is_pandas_available,
     is_scatter_available,
     is_sentencepiece_available,
@@ -160,6 +161,13 @@ def require_git_lfs(test_case):
         return test_case
 
 
+def require_onnx(test_case):
+    if not is_onnx_available():
+        return unittest.skip("test requires ONNX")(test_case)
+    else:
+        return test_case
+
+
 def require_torch(test_case):
     """
     Decorator marking a test that requires PyTorch.

tests/test_modeling_tf_albert.py

@@ -241,6 +241,7 @@ class TFAlbertModelTest(TFModelTesterMixin, unittest.TestCase):
         else ()
     )
     test_head_masking = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFAlbertModelTester(self)

tests/test_modeling_tf_bart.py

@@ -178,6 +178,8 @@ class TFBartModelTest(TFModelTesterMixin, unittest.TestCase):
     all_generative_model_classes = (TFBartForConditionalGeneration,) if is_tf_available() else ()
     is_encoder_decoder = True
     test_pruning = False
+    test_onnx = True
+    onnx_min_opset = 10
 
     def setUp(self):
         self.model_tester = TFBartModelTester(self)

tests/test_modeling_tf_bert.py

@@ -274,6 +274,8 @@ class TFBertModelTest(TFModelTesterMixin, unittest.TestCase):
         else ()
     )
     test_head_masking = False
+    test_onnx = True
+    onnx_min_opset = 10
 
     # special case for ForPreTraining model
     def _prepare_for_class(self, inputs_dict, model_class, return_labels=False):

tests/test_modeling_tf_blenderbot.py

@@ -177,6 +177,7 @@ class TFBlenderbotModelTest(TFModelTesterMixin, unittest.TestCase):
     all_generative_model_classes = (TFBlenderbotForConditionalGeneration,) if is_tf_available() else ()
     is_encoder_decoder = True
     test_pruning = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFBlenderbotModelTester(self)

tests/test_modeling_tf_blenderbot_small.py

@@ -179,6 +179,7 @@ class TFBlenderbotSmallModelTest(TFModelTesterMixin, unittest.TestCase):
     all_generative_model_classes = (TFBlenderbotSmallForConditionalGeneration,) if is_tf_available() else ()
     is_encoder_decoder = True
     test_pruning = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFBlenderbotSmallModelTester(self)

tests/test_modeling_tf_common.py

@@ -16,6 +16,7 @@
 
 import copy
 import inspect
+import json
 import os
 import random
 import tempfile
@@ -24,7 +25,7 @@
 from typing import List, Tuple
 
 from transformers import is_tf_available
-from transformers.testing_utils import _tf_gpu_memory_limit, is_pt_tf_cross_test, require_tf, slow
+from transformers.testing_utils import _tf_gpu_memory_limit, is_pt_tf_cross_test, require_onnx, require_tf, slow
 
 
 if is_tf_available():
@@ -201,6 +202,67 @@ def test_saved_model_creation(self):
             saved_model_dir = os.path.join(tmpdirname, "saved_model", "1")
             self.assertTrue(os.path.exists(saved_model_dir))
 
+    def test_onnx_compliancy(self):
+        if not self.test_onnx:
+            return
+
+        config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common()
+        INTERNAL_OPS = [
+            "Assert",
+            "AssignVariableOp",
+            "EmptyTensorList",
+            "ReadVariableOp",
+            "ResourceGather",
+            "TruncatedNormal",
+            "VarHandleOp",
+            "VarIsInitializedOp",
+        ]
+        onnx_ops = []
+
+        with open(os.path.join(".", "utils", "tf_ops", "onnx.json")) as f:
+            onnx_opsets = json.load(f)["opsets"]
+
+        for i in range(1, self.onnx_min_opset + 1):
+            onnx_ops.extend(onnx_opsets[str(i)])
+
+        for model_class in self.all_model_classes:
+            model_op_names = set()
+
+            with tf.Graph().as_default() as g:
+                model = model_class(config)
+                model(model.dummy_inputs)
+
+                for op in g.get_operations():
+                    model_op_names.add(op.node_def.op)
+
+            model_op_names = sorted(model_op_names)
+            incompatible_ops = []
+
+            for op in model_op_names:
+                if op not in onnx_ops and op not in INTERNAL_OPS:
+                    incompatible_ops.append(op)
+
+            self.assertEqual(len(incompatible_ops), 0, incompatible_ops)
+
+    @require_onnx
+    @slow
+    def test_onnx_runtime_optimize(self):
+        if not self.test_onnx:
+            return
+
+        import keras2onnx
+        import onnxruntime
+
+        config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common()
+
+        for model_class in self.all_model_classes:
+            model = model_class(config)
+            model(model.dummy_inputs)
+
+            onnx_model = keras2onnx.convert_keras(model, model.name, target_opset=self.onnx_min_opset)
+
+            onnxruntime.InferenceSession(onnx_model.SerializeToString())
+
     @slow
     def test_saved_model_creation_extended(self):
         config, inputs_dict = self.model_tester.prepare_config_and_inputs_for_common()

tests/test_modeling_tf_convbert.py

@@ -239,6 +239,7 @@ class TFConvBertModelTest(TFModelTesterMixin, unittest.TestCase):
     )
     test_pruning = False
     test_head_masking = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFConvBertModelTester(self)

tests/test_modeling_tf_ctrl.py

@@ -174,6 +174,7 @@ class TFCTRLModelTest(TFModelTesterMixin, unittest.TestCase):
     all_model_classes = (TFCTRLModel, TFCTRLLMHeadModel, TFCTRLForSequenceClassification) if is_tf_available() else ()
     all_generative_model_classes = (TFCTRLLMHeadModel,) if is_tf_available() else ()
     test_head_masking = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFCTRLModelTester(self)

tests/test_modeling_tf_distilbert.py

@@ -184,6 +184,7 @@ class TFDistilBertModelTest(TFModelTesterMixin, unittest.TestCase):
         else None
     )
     test_head_masking = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFDistilBertModelTester(self)

tests/test_modeling_tf_dpr.py

@@ -188,6 +188,7 @@ class TFDPRModelTest(TFModelTesterMixin, unittest.TestCase):
     test_missing_keys = False
     test_pruning = False
     test_head_masking = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFDPRModelTester(self)

tests/test_modeling_tf_electra.py

@@ -206,6 +206,7 @@ class TFElectraModelTest(TFModelTesterMixin, unittest.TestCase):
         else ()
     )
     test_head_masking = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFElectraModelTester(self)

tests/test_modeling_tf_flaubert.py

@@ -292,6 +292,7 @@ class TFFlaubertModelTest(TFModelTesterMixin, unittest.TestCase):
         (TFFlaubertWithLMHeadModel,) if is_tf_available() else ()
     )  # TODO (PVP): Check other models whether language generation is also applicable
     test_head_masking = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFFlaubertModelTester(self)

tests/test_modeling_tf_funnel.py

@@ -339,6 +339,7 @@ class TFFunnelModelTest(TFModelTesterMixin, unittest.TestCase):
         else ()
     )
     test_head_masking = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFFunnelModelTester(self)
@@ -382,6 +383,7 @@ class TFFunnelBaseModelTest(TFModelTesterMixin, unittest.TestCase):
         (TFFunnelBaseModel, TFFunnelForMultipleChoice, TFFunnelForSequenceClassification) if is_tf_available() else ()
     )
     test_head_masking = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFFunnelModelTester(self, base=True)

tests/test_modeling_tf_gpt2.py

@@ -333,6 +333,8 @@ class TFGPT2ModelTest(TFModelTesterMixin, unittest.TestCase):
     )
     all_generative_model_classes = (TFGPT2LMHeadModel,) if is_tf_available() else ()
     test_head_masking = False
+    test_onnx = True
+    onnx_min_opset = 10
 
     def setUp(self):
         self.model_tester = TFGPT2ModelTester(self)

tests/test_modeling_tf_led.py

@@ -195,6 +195,8 @@ class TFLEDModelTest(TFModelTesterMixin, unittest.TestCase):
     all_generative_model_classes = (TFLEDForConditionalGeneration,) if is_tf_available() else ()
     is_encoder_decoder = True
     test_pruning = False
+    test_head_masking = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFLEDModelTester(self)

tests/test_modeling_tf_longformer.py

@@ -297,6 +297,8 @@ class TFLongformerModelTest(TFModelTesterMixin, unittest.TestCase):
         if is_tf_available()
         else ()
     )
+    test_head_masking = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFLongformerModelTester(self)

tests/test_modeling_tf_lxmert.py

@@ -362,6 +362,7 @@ class TFLxmertModelTest(TFModelTesterMixin, unittest.TestCase):
 
     all_model_classes = (TFLxmertModel, TFLxmertForPreTraining) if is_tf_available() else ()
     test_head_masking = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFLxmertModelTester(self)

tests/test_modeling_tf_marian.py

@@ -179,6 +179,7 @@ class TFMarianModelTest(TFModelTesterMixin, unittest.TestCase):
     all_generative_model_classes = (TFMarianMTModel,) if is_tf_available() else ()
     is_encoder_decoder = True
     test_pruning = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFMarianModelTester(self)

tests/test_modeling_tf_mbart.py

@@ -181,6 +181,7 @@ class TFMBartModelTest(TFModelTesterMixin, unittest.TestCase):
     all_generative_model_classes = (TFMBartForConditionalGeneration,) if is_tf_available() else ()
     is_encoder_decoder = True
     test_pruning = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFMBartModelTester(self)

tests/test_modeling_tf_mobilebert.py

@@ -56,6 +56,7 @@ class TFMobileBertModelTest(TFModelTesterMixin, unittest.TestCase):
         else ()
     )
     test_head_masking = False
+    test_onnx = False
 
     class TFMobileBertModelTester(object):
         def __init__(

tests/test_modeling_tf_mpnet.py

@@ -199,6 +199,7 @@ class TFMPNetModelTest(TFModelTesterMixin, unittest.TestCase):
         else ()
     )
     test_head_masking = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFMPNetModelTester(self)

tests/test_modeling_tf_openai.py

@@ -203,6 +203,7 @@ class TFOpenAIGPTModelTest(TFModelTesterMixin, unittest.TestCase):
         (TFOpenAIGPTLMHeadModel,) if is_tf_available() else ()
     )  # TODO (PVP): Add Double HeadsModel when generate() function is changed accordingly
     test_head_masking = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFOpenAIGPTModelTester(self)

tests/test_modeling_tf_pegasus.py

@@ -177,6 +177,7 @@ class TFPegasusModelTest(TFModelTesterMixin, unittest.TestCase):
     all_generative_model_classes = (TFPegasusForConditionalGeneration,) if is_tf_available() else ()
     is_encoder_decoder = True
     test_pruning = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFPegasusModelTester(self)

tests/test_modeling_tf_roberta.py

@@ -186,6 +186,7 @@ class TFRobertaModelTest(TFModelTesterMixin, unittest.TestCase):
         else ()
     )
     test_head_masking = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFRobertaModelTester(self)

tests/test_modeling_tf_t5.py

@@ -249,6 +249,7 @@ class TFT5ModelTest(TFModelTesterMixin, unittest.TestCase):
     all_model_classes = (TFT5Model, TFT5ForConditionalGeneration) if is_tf_available() else ()
     all_generative_model_classes = (TFT5ForConditionalGeneration,) if is_tf_available() else ()
     test_head_masking = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFT5ModelTester(self)
@@ -427,6 +428,7 @@ class TFT5EncoderOnlyModelTest(TFModelTesterMixin, unittest.TestCase):
     is_encoder_decoder = False
     all_model_classes = (TFT5EncoderModel,) if is_tf_available() else ()
     test_head_masking = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFT5EncoderOnlyModelTester(self)

tests/test_modeling_tf_transfo_xl.py

@@ -164,6 +164,7 @@ class TFTransfoXLModelTest(TFModelTesterMixin, unittest.TestCase):
     # TODO: add this test when TFTransfoXLLMHead has a linear output layer implemented
     test_resize_embeddings = False
     test_head_masking = False
+    test_onnx = False
 
     def setUp(self):
         self.model_tester = TFTransfoXLModelTester(self)