Torch was unable to set instance_norm trainmode to False, this migh…

…t be causing the `asser_allclose` to fail. Make it a warning for now.

nnunetv2/model_sharing/entry_points.py

@@ -173,12 +173,12 @@ def export_pretrained_model_onnx_entry():
     print("!!!!!!!!!!!!!!!!!!!!!!!!WARNING!!!!!!!!!!!!!!!!!!!!!!!")
     print("######################################################")
     print(
-        "You are responsible for creating the ONNX pipeline \n"
+        "You are responsible for creating the ONNX pipeline\n"
         "yourself.\n\n"
-        "This script will only export the model \n"
-        "weights to an onnx file, and some basic information \n"
-        "about the model. You will have to create the ONNX \n"
-        "pipeline yourself. \n"
+        "This script will only export the model weights to\n"
+        "an onnx file, and some basic information about\n"
+        "the model. You will have to create the ONNX pipeline\n"
+        "yourself.\n"
     )
     print(
         "See\n"

nnunetv2/model_sharing/onnx_export.py

@@ -73,10 +73,7 @@ def export_onnx_model(
             config = predictor.configuration_manager
 
             for fold, params in zip(folds, list_of_parameters):
-                if not isinstance(network, OptimizedModule):
-                    network.load_state_dict(params)
-                else:
-                    network._orig_mod.load_state_dict(params)
+                network.load_state_dict(params)
 
                 network.eval()
 
@@ -115,15 +112,21 @@ def export_onnx_model(
                 ort_inputs = {ort_session.get_inputs()[0].name: rand_input.numpy()}
                 ort_outs = ort_session.run(None, ort_inputs)
 
-                np.testing.assert_allclose(
-                    torch_output.detach().cpu().numpy(),
-                    ort_outs[0],
-                    rtol=1e-03,
-                    atol=1e-05,
-                )
+                try:
+                    np.testing.assert_allclose(
+                        torch_output.detach().cpu().numpy(),
+                        ort_outs[0],
+                        rtol=1e-03,
+                        atol=1e-05,
+                        verbose=True,
+                    )
+                except AssertionError as e:
+                    print(f"WARN: Differences found between torch and onnx:\n")
+                    print(e)
+                    print("\nExport will continue, but please verify that your pipeline matches the original.")
 
                 print(
-                    f"Successfully exported and verified {curr_output_dir / output_name}"
+                    f"Exported {curr_output_dir / output_name}"
                 )
 
                 with open(curr_output_dir / "config.json", "w") as f: