diff --git a/graph_net/torch/extractor.py b/graph_net/torch/extractor.py
index 568ad995a..fe87ba332 100644
--- a/graph_net/torch/extractor.py
+++ b/graph_net/torch/extractor.py
@@ -49,6 +49,7 @@ def __init__(
         mut_graph_codes=None,
         placeholder_auto_rename=False,
         workspace_path=None,
+        param_buffer_ids=None,
     ):
         self.subgraph_counter = 0
         self.name = name
@@ -64,6 +65,7 @@ def __init__(
             raise EnvironmentError(
                 "Environment variable 'GRAPH_NET_EXTRACT_WORKSPACE' is not set."
             )
+        self.param_buffer_ids = param_buffer_ids or set()
 
     def move_files(self, source_dir, target_dir):
         os.makedirs(target_dir, exist_ok=True)
@@ -150,7 +152,16 @@ def try_rename_placeholder(node):
             self.mut_graph_codes.append(base_code)
 
         # 4. Save tensor metadata
-        converted = utils.convert_state_and_inputs(params, [])
+        # Separate model weights (parameters + buffers) from real inputs in params
+        weights = {}
+        example_inputs = {}
+        for name, value in params.items():
+            if id(value) in self.param_buffer_ids:
+                weights[name] = value
+            else:
+                example_inputs[name] = value
+
+        converted = utils.convert_state_and_inputs(weights, example_inputs)
         utils.save_converted_to_text(converted, file_path=subgraph_path)
         utils.save_constraints_text(
             converted,
@@ -280,9 +291,24 @@ def wrapper(model: torch.nn.Module):
         model_path = None
         if hasattr(model, "__graph_net_file_path__"):
             model_path = os.path.dirname(model.__graph_net_file_path__)
-        extractor = get_graph_extractor_maker(model_path)(
-            name, dynamic, mut_graph_codes, placeholder_auto_rename
-        )
+
+        # Collect parameter and buffer ids from the original model for distinguishing weights and inputs in __call__
+        param_buffer_ids = set()
+        for _, p in model.named_parameters():
+            param_buffer_ids.add(id(p))
+        for _, b in model.named_buffers():
+            param_buffer_ids.add(id(b))
+
+        maker = get_graph_extractor_maker(model_path)
+        if maker is GraphExtractor:
+            extractor = maker(
+                name, dynamic, mut_graph_codes, placeholder_auto_rename,
+                param_buffer_ids=param_buffer_ids,
+            )
+        else:
+            extractor = maker(
+                name, dynamic, mut_graph_codes, placeholder_auto_rename
+            )
         # return torch.compile(backend=extractor, dynamic=dynamic)
         compiled_model = torch.compile(model, backend=extractor, dynamic=dynamic)
         return compiled_model
diff --git a/graph_net/torch/utils.py b/graph_net/torch/utils.py
index 658ade37f..efc41aeac 100644
--- a/graph_net/torch/utils.py
+++ b/graph_net/torch/utils.py
@@ -75,6 +75,8 @@ def process_tensor(tensor):
         processed_inputs = process_tensor(example_inputs)
     elif isinstance(example_inputs, (list, tuple)):
         processed_inputs = [process_tensor(t) for t in example_inputs]
+    elif isinstance(example_inputs, dict):
+        processed_inputs = {k: process_tensor(v) for k, v in example_inputs.items()}
     else:
         processed_inputs = {"type": "unknown", "value": example_inputs}
 
@@ -181,13 +183,28 @@ def process_tensor_info(tensor_info, name_prefix="example_input"):
         return lines
 
     input_infos = converted["input_info"]
-    if isinstance(input_infos, dict):
-        input_infos = [input_infos]
 
     input_lines = []
-    for idx, input_info in enumerate(input_infos):
-        input_info["name"] = f"input_{idx}"
-        input_lines.extend(process_tensor_info(input_info, name_prefix="Program_input"))
+    if isinstance(input_infos, dict) and input_infos:
+        # Check if it's a dict of named tensor infos (e.g., placeholder inputs)
+        first_val = next(iter(input_infos.values()))
+        if isinstance(first_val, dict) and "type" in first_val:
+            # Named inputs: {name: tensor_info}
+            for name, input_info in input_infos.items():
+                input_info["name"] = name
+                input_lines.extend(process_tensor_info(input_info, name_prefix="Program_input"))
+        else:
+            # Single input info dict (e.g., a single tensor's info)
+            input_infos = [input_infos]
+            for idx, input_info in enumerate(input_infos):
+                input_info["name"] = f"input_{idx}"
+                input_lines.extend(process_tensor_info(input_info, name_prefix="Program_input"))
+    else:
+        if isinstance(input_infos, dict):
+            input_infos = [input_infos]
+        for idx, input_info in enumerate(input_infos):
+            input_info["name"] = f"input_{idx}"
+            input_lines.extend(process_tensor_info(input_info, name_prefix="Program_input"))
 
     with open(f"{file_path}/input_meta.py", "w") as f:
         f.write("\n".join(input_lines))