diff --git a/graph_net/bash_templates/model_path_handler_sh.txt b/graph_net/bash_templates/model_path_handler_sh.txt
new file mode 100644
index 000000000..ee599105e
--- /dev/null
+++ b/graph_net/bash_templates/model_path_handler_sh.txt
@@ -0,0 +1,26 @@
+#!/bin/bash
+
+GRAPH_NET_ROOT=$(python3 -c "import graph_net; import os; print(os.path.dirname(os.path.dirname(graph_net.__file__)))")
+model_path_handler_config_json_str=$(cat <<EOF
+{
+    "handler_path": "$GRAPH_NET_ROOT/graph_net/customize_your_sample_pass.py",
+    "handler_class_name": "customize_your_class_name",
+    "handler_config": {
+        "resume": true,
+        "model_path_prefix": "/customize_your_model_path_prefix",
+        "output_dir": "/customize_your_output_file"
+    }
+}
+EOF
+)
+
+model_path_handler_model_path_list="customize_your_model_path_list"
+MODEL_PATH_HANDLER_CONFIG=$(echo $model_path_handler_config_json_str | base64 -w 0)
+
+python3 -m graph_net.model_path_handler \
+    --model-path-list $model_path_handler_model_path_list \
+    --handler-config $MODEL_PATH_HANDLER_CONFIG \
+
+unset model_path_handler_model_path_list
+unset MODEL_PATH_HANDLER_CONFIG
+
diff --git a/graph_net/sample_pass/only_model_file_rewrite_sample_pass_mixin.py b/graph_net/sample_pass/only_model_file_rewrite_sample_pass_mixin.py
new file mode 100644
index 000000000..26eec5c3e
--- /dev/null
+++ b/graph_net/sample_pass/only_model_file_rewrite_sample_pass_mixin.py
@@ -0,0 +1,28 @@
+import abc
+import shutil
+from graph_net.sample_pass.sample_pass_mixin import SamplePassMixin
+from pathlib import Path
+
+
+class OnlyModelFileRewriteSamplePassMixin(SamplePassMixin):
+    def declare_config(
+        self,
+        model_path_prefix: str,
+        output_dir: str,
+    ):
+        pass
+
+    @abc.abstractmethod
+    def handle_model_py_file(self, rel_model_path: str) -> str:
+        """
+        return rewrited model.py file contents
+        """
+        raise NotImplementedError()
+
+    def copy_sample_and_handle_model_py_file(self, rel_model_path: str):
+        src_model_path = Path(self.config["model_path_prefix"]) / rel_model_path
+        dst_model_path = Path(self.config["output_dir"]) / rel_model_path
+        dst_model_path.mkdir(parents=True, exist_ok=True)
+        shutil.copytree(src_model_path, dst_model_path, dirs_exist_ok=True)
+        model_py_code = self.handle_model_py_file(rel_model_path)
+        (dst_model_path / "model.py").write_text(model_py_code)
diff --git a/graph_net/sample_pass/resumable_sample_pass_mixin.py b/graph_net/sample_pass/resumable_sample_pass_mixin.py
new file mode 100644
index 000000000..73e9fc7b3
--- /dev/null
+++ b/graph_net/sample_pass/resumable_sample_pass_mixin.py
@@ -0,0 +1,48 @@
+import abc
+import sys
+from graph_net.sample_pass.sample_pass_mixin import SamplePassMixin
+from pathlib import Path
+import os
+
+
+class ResumableSamplePassMixin(SamplePassMixin):
+    def __init__(self, *args, **kwargs):
+        self.num_handled_models = 0
+
+    def declare_config(
+        self,
+        model_path_prefix: str,
+        output_dir: str,
+        resume: bool = False,
+        limits_handled_models: int = None,
+    ):
+        pass
+
+    def sample_handled(self, rel_model_path: str) -> bool:
+        dst_model_path = Path(self.config["output_dir"]) / rel_model_path
+        if not dst_model_path.exists():
+            return False
+        num_model_py_files = len(list(dst_model_path.rglob("model.py")))
+        assert num_model_py_files <= 1
+        return num_model_py_files == 1
+
+    @abc.abstractmethod
+    def resume(self, rel_model_path: str):
+        raise NotImplementedError()
+
+    def resumable_handle_sample(self, rel_model_path: str):
+        assert os.path.realpath(self.config["model_path_prefix"]) != os.path.realpath(
+            self.config["output_dir"]
+        )
+        if self.config["resume"] and self.sample_handled(rel_model_path):
+            return
+        self.resume(rel_model_path)
+        self._inc_num_handled_models_or_exit()
+
+    def _inc_num_handled_models_or_exit(self):
+        if self.config["limits_handled_models"] is None:
+            return
+        self.num_handled_models += 1
+        if self.num_handled_models >= self.config["limits_handled_models"]:
+            print("limits_handled_models expired.", flush=True)
+            sys.exit(0)
diff --git a/graph_net/sample_pass/sample_pass.py b/graph_net/sample_pass/sample_pass.py
new file mode 100644
index 000000000..7703214b5
--- /dev/null
+++ b/graph_net/sample_pass/sample_pass.py
@@ -0,0 +1,92 @@
+import abc
+import copy
+import inspect
+
+
+class SamplePass(abc.ABC):
+    def __init__(self, config=None):
+        if config is None:
+            config = {}
+
+        self._check_config_declaration_valid()
+        self.config = self._make_config_by_config_declare(config)
+
+    @abc.abstractmethod
+    def declare_config(self):
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def __call__(self, rel_model_path: str):
+        raise NotImplementedError()
+
+    def _recursively_check_mixin_declare_config(self, base_class):
+        from graph_net.sample_pass.sample_pass_mixin import SamplePassMixin
+
+        if issubclass(base_class, (SamplePass, SamplePassMixin)):
+            check_is_base_signature(
+                base_class=base_class,
+                derived_class=type(self),
+                method_name="declare_config",
+            )
+        for sub_class in base_class.__bases__:
+            self._recursively_check_mixin_declare_config(sub_class)
+
+    def _check_config_declaration_parameters(self):
+        sig = inspect.signature(self.declare_config)
+        for name, param in sig.parameters.items():
+            assert param.annotation in {
+                int,
+                bool,
+                float,
+                str,
+                list,
+                dict,
+            }, f"{name=} {param.annotation}"
+            assert param.kind in {
+                inspect.Parameter.POSITIONAL_OR_KEYWORD,
+                inspect.Parameter.VAR_KEYWORD,
+            }, f"{name=} {param.kind=}"
+
+    def _check_config_declaration_valid(self):
+        self._recursively_check_mixin_declare_config(type(self))
+        self._check_config_declaration_parameters()
+
+    def _make_config_by_config_declare(self, config):
+        sig = inspect.signature(self.declare_config)
+        mut_config = copy.deepcopy(config)
+        for name, param in sig.parameters.items():
+            self._complete_default(name, param, mut_config)
+            class_name = type(self).__name__
+            assert name in mut_config, f"{name=} {class_name=}"
+
+        def get_extra_config_fields():
+            return set(name for name, _ in mut_config.items()) - set(
+                name for name, _ in sig.parameters.items()
+            )
+
+        no_varadic_keyword = all(
+            param.kind != inspect.Parameter.VAR_KEYWORD
+            for _, param in sig.parameters.items()
+        )
+        if no_varadic_keyword:
+            no_extra_config_fields = all(
+                name in sig.parameters for name, _ in mut_config.items()
+            )
+            assert no_extra_config_fields, f"{get_extra_config_fields()=}"
+        return mut_config
+
+    def _complete_default(self, name, param, mut_config):
+        if param.default is inspect.Parameter.empty:
+            return
+        mut_config[name] = copy.deepcopy(param.default)
+
+
+def check_is_base_signature(base_class, derived_class, method_name):
+    base = getattr(base_class, method_name)
+    derived = getattr(derived_class, method_name)
+    base_parameters = inspect.signature(base).parameters
+    derived_parameters = inspect.signature(derived).parameters
+    assert len(derived_parameters) >= len(base_parameters)
+    for name, param in base_parameters.items():
+        assert name in base_parameters, f"{name=}"
+        assert param == base_parameters[name]
diff --git a/graph_net/sample_pass/sample_pass_mixin.py b/graph_net/sample_pass/sample_pass_mixin.py
new file mode 100644
index 000000000..7f13171fd
--- /dev/null
+++ b/graph_net/sample_pass/sample_pass_mixin.py
@@ -0,0 +1,7 @@
+import abc
+
+
+class SamplePassMixin(abc.ABC):
+    @abc.abstractmethod
+    def declare_config(self):
+        raise NotImplementedError()
diff --git a/graph_net/test/device_rewrite_sample_pass_test.sh b/graph_net/test/device_rewrite_sample_pass_test.sh
new file mode 100755
index 000000000..90779cc70
--- /dev/null
+++ b/graph_net/test/device_rewrite_sample_pass_test.sh
@@ -0,0 +1,27 @@
+#!/bin/bash
+
+GRAPH_NET_ROOT=$(python3 -c "import graph_net; import os; print(os.path.dirname(os.path.dirname(graph_net.__file__)))")
+model_path_handler_config_json_str=$(cat <<EOF
+{
+    "handler_path": "$GRAPH_NET_ROOT/graph_net/torch/sample_passes/device_rewrite_sample_pass.py",
+    "handler_class_name": "DeviceRewriteSamplePass",
+    "handler_config": {
+        "device": "cuda",
+        "resume": false,
+        "model_path_prefix": "$GRAPH_NET_ROOT",
+        "output_dir": "/tmp/device_rewrited"
+    }
+}
+EOF
+)
+
+model_path_handler_model_path_list="$GRAPH_NET_ROOT/graph_net/test/dev_model_list/validation_error_model_list.txt"
+MODEL_PATH_HANDLER_CONFIG=$(echo $model_path_handler_config_json_str | base64 -w 0)
+
+python3 -m graph_net.model_path_handler \
+    --model-path-list $model_path_handler_model_path_list \
+    --handler-config $MODEL_PATH_HANDLER_CONFIG \
+
+unset model_path_handler_model_path_list
+unset MODEL_PATH_HANDLER_CONFIG
+
diff --git a/graph_net/torch/fx_graph_parse_util.py b/graph_net/torch/fx_graph_parse_util.py
index c4a130d3c..bd5dc7c34 100644
--- a/graph_net/torch/fx_graph_parse_util.py
+++ b/graph_net/torch/fx_graph_parse_util.py
@@ -130,8 +130,6 @@ def parse_sole_graph_module_without_varify(module, inputs):
     def my_backend(gm, sample_inputs):
         nonlocal traced_module
         nonlocal traced_sample_inputs
-        assert traced_module is None
-        assert traced_sample_inputs is None
         traced_module = gm
         traced_sample_inputs = sample_inputs
         return gm.forward
diff --git a/graph_net/torch/graph_decomposer.py b/graph_net/torch/graph_decomposer.py
index fae263857..ed01cb5b6 100644
--- a/graph_net/torch/graph_decomposer.py
+++ b/graph_net/torch/graph_decomposer.py
@@ -1,4 +1,5 @@
 import os
+import shutil
 from pathlib import Path
 import torch
 import json
@@ -197,13 +198,15 @@ def _is_model_handled(self, rel_model_path, split_positions):
         num_subgraphs = len(split_positions) + 1
         decomposed_model_path = Path(self.config["output_dir"]) / rel_model_path
         num_decomposed = len(list(decomposed_model_path.rglob("model.py")))
-        if num_decomposed > 0:
-            assert (
-                num_subgraphs <= num_decomposed
-            ), f"{num_subgraphs=} {num_decomposed=} {str(decomposed_model_path)=}"
+        if num_decomposed > 0 and num_subgraphs != num_decomposed:
+            shutil.rmtree(decomposed_model_path / "_decomposed")
+            return False
         return num_subgraphs == num_decomposed
 
     def __call__(self, rel_model_path):
+        assert os.path.realpath(self.config["model_path_prefix"]) != os.path.realpath(
+            self.config["output_dir"]
+        )
         model_path = os.path.join(self.config["model_path_prefix"], rel_model_path)
         split_results = load_json(self.config["split_results_path"])
         split_positions = split_results[rel_model_path]["split_positions"]
diff --git a/graph_net/torch/sample_passes/device_rewrite_sample_pass.py b/graph_net/torch/sample_passes/device_rewrite_sample_pass.py
new file mode 100644
index 000000000..f7a8df2d3
--- /dev/null
+++ b/graph_net/torch/sample_passes/device_rewrite_sample_pass.py
@@ -0,0 +1,36 @@
+from graph_net.sample_pass.sample_pass import SamplePass
+from graph_net.sample_pass.resumable_sample_pass_mixin import ResumableSamplePassMixin
+from graph_net.sample_pass.only_model_file_rewrite_sample_pass_mixin import (
+    OnlyModelFileRewriteSamplePassMixin,
+)
+from graph_net.torch import utils
+from pathlib import Path
+
+
+class DeviceRewriteSamplePass(
+    SamplePass, ResumableSamplePassMixin, OnlyModelFileRewriteSamplePassMixin
+):
+    def __init__(self, config):
+        super().__init__(config)
+
+    def declare_config(
+        self,
+        model_path_prefix: str,
+        output_dir: str,
+        device: str,
+        resume: bool = False,
+        limits_handled_models: int = None,
+    ):
+        pass
+
+    def __call__(self, rel_model_path: str):
+        self.resumable_handle_sample(rel_model_path)
+
+    def resume(self, rel_model_path: str):
+        return self.copy_sample_and_handle_model_py_file(rel_model_path)
+
+    def handle_model_py_file(self, rel_model_path: str) -> str:
+        src_model_path = Path(self.config["model_path_prefix"]) / rel_model_path
+        model_py_code = (src_model_path / "model.py").read_text()
+        device = self.config["device"]
+        return utils.modify_code_by_device(model_py_code, device)