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Pass folder path to store initializers as files #929

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Pass folder path to store initializers as files #929

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12 changes: 10 additions & 2 deletions onnxscript/function_libs/torch_lib/graph_building.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
from __future__ import annotations

import logging
import os
import typing
import warnings
from typing import Any, Dict, Final, List, Mapping, Optional, Sequence, Tuple, Union
Expand Down Expand Up @@ -671,7 +672,12 @@ def to_function_proto(self, opset_version: int, function_name: str) -> onnx.Func

@runtime_typing.checked
def to_model_proto(
self, opset_version: int, include_initializers: bool = True
self, opset_version: int,
include_initializers: bool = True,
# If "my_folder/my_sub_folder/" is provided,
# the initializers will be stored to "my_folder/my_sub_folder/".
# There will be one file per initializer.
external_initializer_path: Optional[str] = None,
) -> onnx.ModelProto:
function_proto_dict: Mapping[
Tuple[str, str], onnx.FunctionProto
Expand All @@ -698,7 +704,9 @@ def to_model_proto(
keep_initializers_as_inputs=False,
custom_opsets={},
add_node_names=True,
onnx_file_path="",
# This PyTorch API strips the last component in onnx_file_path,
# we append "tmp.onnx" so that "external_initializer_path/tmp.onnx".
onnx_file_path=os.path.join(external_initializer_path, "tmp.onnx"),
node_attr_to_name={},
)

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