Add Inception V3 model to examples (#74)

Summary:
Pull Request resolved: #74

Add Inception V3 model to executorch/examples.

Info about Inception V3: https://pytorch.org/hub/pytorch_vision_inception_v3/

Differential Revision: D48439838

fbshipit-source-id: c2e5e3d8cbc637a99a50fec3fcba05aa89663d9c

Author: guangy10

examples/export/test/test_export.py

@@ -87,3 +87,11 @@ def test_w2l_export_to_executorch(self):
         self._assert_eager_lowered_same_result(
             eager_model, example_inputs, self.validate_tensor_allclose
         )
+
+    def test_ic3_export_to_executorch(self):
+        eager_model, example_inputs = MODEL_NAME_TO_MODEL["ic3"]()
+        eager_model = eager_model.eval()
+
+        self._assert_eager_lowered_same_result(
+            eager_model, example_inputs, self.validate_tensor_allclose
+        )

examples/models/TARGETS

@@ -8,6 +8,7 @@ python_library(
     ],
     deps = [
         "//caffe2:torch",
+        "//executorch/examples/models/inception_v3:ic3_export",
         "//executorch/examples/models/mobilenet_v2:mv2_export",
         "//executorch/examples/models/mobilenet_v3:mv3_export",
         "//executorch/examples/models/torchvision_vit:vit_export",

examples/models/inception_v3/TARGETS

@@ -0,0 +1,14 @@
+load("@fbcode_macros//build_defs:python_library.bzl", "python_library")
+
+python_library(
+    name = "ic3_export",
+    srcs = [
+        "__init__.py",
+        "export.py",
+    ],
+    base_module = "executorch.examples.models.inception_v3",
+    deps = [
+        "//caffe2:torch",
+        "//pytorch/vision:torchvision",
+    ],
+)

examples/models/inception_v3/__init__.py

@@ -0,0 +1,11 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
+from .export import InceptionV3Model
+
+__all__ = [
+    InceptionV3Model,
+]

examples/models/inception_v3/export.py

@@ -0,0 +1,30 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
+import logging
+
+import torch
+from torchvision import models
+
+FORMAT = "[%(filename)s:%(lineno)s] %(message)s"
+logging.basicConfig(format=FORMAT)
+
+
+class InceptionV3Model:
+    def __init__(self):
+        pass
+
+    @staticmethod
+    def get_model():
+        logging.info("loading torchvision inception_v3 model")
+        inception_v3 = models.inception_v3(weights="IMAGENET1K_V1")
+        logging.info("loaded torchvision inception_v3 model")
+        return inception_v3
+
+    @staticmethod
+    def get_example_inputs():
+        input_shape = (1, 3, 224, 224)
+        return (torch.randn(input_shape),)

examples/models/models.py

@@ -102,6 +102,12 @@ def gen_wav2letter_model_and_inputs() -> Tuple[torch.nn.Module, Any]:
     return model.get_model(), model.get_example_inputs()
 
 
+def gen_inception_v3_model_and_inputs() -> Tuple[torch.nn.Module, Any]:
+    from ..models.inception_v3 import InceptionV3Model
+
+    return InceptionV3Model.get_model(), InceptionV3Model.get_example_inputs()
+
+
 MODEL_NAME_TO_MODEL = {
     "mul": lambda: (MulModule(), MulModule.get_example_inputs()),
     "linear": lambda: (LinearModule(), LinearModule.get_example_inputs()),
@@ -111,4 +117,5 @@ def gen_wav2letter_model_and_inputs() -> Tuple[torch.nn.Module, Any]:
     "mv3": gen_mobilenet_v3_model_inputs,
     "vit": gen_torchvision_vit_model_and_inputs,
     "w2l": gen_wav2letter_model_and_inputs,
+    "ic3": gen_inception_v3_model_and_inputs,
 }