refactor(mge/imperative): move cgtools to megengine.utils and add load_and_inference in cgtools

GitOrigin-RevId: abfee3d4faf5768ba742a53357be5d34a473f540

imperative/python/megengine/__init__.py

@@ -76,7 +76,7 @@ from .logger import enable_debug_log, get_logger, set_log_file, set_log_level
 from .serialization import load, save
 from .tensor import Parameter, Tensor, tensor
 from .version import __version__
-from .core import cgtools
+from .utils import comp_graph_tools as cgtools
 
 _set_fork_exec_path_for_timed_func(
     sys.executable,

imperative/python/megengine/core/__init__.py

@@ -11,4 +11,3 @@ import sys
 
 from .tensor import Tensor
 from .tensor.megbrain_graph import Graph
-from .utils import comp_graph_tools as cgtools

imperative/python/megengine/core/tensor/megbrain_graph.py

@@ -358,7 +358,7 @@ CompGraphLoadResult = collections.namedtuple(
 def load_graph(fpath):
     """Load a serialized computing graph from file.
 
-    :parma fpath: Path or Handle for the output file
+    :param fpath: Path or Handle of the input file
     :return: An instance of namedtuple :class:`CompGraphLoadResult`,
         whose fields are:
 

imperative/python/megengine/core/utils/__init__.py

-# -*- coding: utf-8 -*-
-# MegEngine is Licensed under the Apache License, Version 2.0 (the "License")
-#
-# Copyright (c) 2014-2020 Megvii Inc. All rights reserved.
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT ARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-from .comp_graph_tools import *

imperative/python/megengine/core/utils/comp_graph_tools.py → imperative/python/megengine/utils/comp_graph_tools.py

@@ -8,8 +8,12 @@
 import collections
 from typing import Dict, List
 
-from .. import _imperative_rt
-from .._imperative_rt import OperatorNode, VarNode
+import numpy
+
+from ..core import _imperative_rt
+from ..core._imperative_rt import OperatorNode, VarNode
+from ..core.tensor import megbrain_graph as G
+from ..core.tensor.raw_tensor import as_raw_tensor
 
 
 def get_dep_vars(var: VarNode, var_type: str = None) -> List[VarNode]:
@@ -251,3 +255,33 @@ def set_priority_to_id(dest_vars):
         assert isinstance(i, VarNode)
         dest_vec.append(i)
     _imperative_rt.graph._set_priority_to_id(dest_vec)
+
+
+def load_and_inference(file, inp_data_list: List[numpy.ndarray]) -> List[numpy.ndarray]:
+    """Load a serialized computing graph and run inference with input data.
+
+    :param file: Path or Handle of the input file.
+    :param inp_data_list: List of input data.
+    :return: List of inference results.
+
+    """
+    *_, out_list = G.load_graph(file)
+    inputs = get_dep_vars(out_list, "Host2DeviceCopy")
+    replace_dict = {}
+    inp_node_list = []
+    for i in inputs:
+        inp_node = G.InputNode(
+            device="xpux", dtype=inputs[0].dtype, graph=inputs[0].graph
+        )
+        replace_dict[i] = inp_node.outputs[0]
+        inp_node_list.append(inp_node)
+    new_out = replace_vars(out_list, replace_dict)
+    out_node_list = [G.OutputNode(i) for i in new_out]
+    new_out_list = [i.outputs[0] for i in out_node_list]
+    cg = new_out_list[0].graph
+    func = cg.compile(new_out_list)
+    for node, value in zip(inp_node_list, inp_data_list):
+        node.set_value(as_raw_tensor(value)._dev_tensor())
+    func.execute()
+    out_data_list = [o.get_value().numpy() for o in out_node_list]
+    return out_data_list

imperative/python/test/unit/test_tracing.py

@@ -22,29 +22,6 @@ from megengine.functional import exp, log
 from megengine.jit import exclude_from_trace, trace
 
 
-def load_and_inference(file, inp_data):
-    cg, _, out_list = G.load_graph(file)
-    inputs = cgtools.get_dep_vars(out_list, "Host2DeviceCopy")
-    replace_dict = {}
-    inp_node_list = []
-    for i in inputs:
-        inp_node = G.InputNode(
-            device="xpux", dtype=inputs[0].dtype, graph=inputs[0].graph
-        )
-        replace_dict[i] = inp_node.outputs[0]
-        inp_node_list.append(inp_node)
-    new_out = cgtools.replace_vars(out_list, replace_dict)
-    out_node_list = [G.OutputNode(i) for i in new_out]
-    new_out_list = [i.outputs[0] for i in out_node_list]
-    new_cg = new_out_list[0].graph
-    func = new_cg.compile(new_out_list)
-    for node, value in zip(inp_node_list, inp_data):
-        node.set_value(as_raw_tensor(value)._dev_tensor())
-    func.execute()
-    out_data_list = [o.get_value().numpy() for o in out_node_list]
-    return out_data_list
-
-
 def test_trace():
     for symbolic in [False, True]:
 
@@ -124,7 +101,7 @@ def test_dump():
     np.testing.assert_equal(dump_info.inputs, ["h2d[0]", "h2d[2]"])
     np.testing.assert_equal(dump_info.outputs, ["ADD(h2d[0],h2d[2])[4]"])
     file.seek(0)
-    result = load_and_inference(file, [a, b])
+    result = cgtools.load_and_inference(file, [a, b])
     np.testing.assert_equal(result[0], y)
 
 
@@ -146,7 +123,7 @@ def test_capture_dump():
     file = io.BytesIO()
     f.dump(file)
     file.seek(0)
-    result = load_and_inference(file, [x])
+    result = cgtools.load_and_inference(file, [x])
     np.testing.assert_equal(result[0], y)
 
 

sdk/load-and-run/dump_with_testcase_imperative.py

@@ -17,6 +17,7 @@ import numpy as np
 import megengine as mge
 import megengine.core._imperative_rt as rt
 import megengine.core.tensor.megbrain_graph as G
+from megengine.core.tensor.megbrain_graph import VarNode
 from megengine import cgtools
 from megengine.core.ops import builtin
 from megengine.core.tensor.core import apply
@@ -488,7 +489,8 @@ def main():
     with open(args.output, "wb") as fout:
         fout.write(b"mgbtest0")
         fout.write(struct.pack("I", len(feeds["testcases"])))
-        fout.write(rt.dump_graph(output_mgbvars))
+        dump_content, _ = G.dump_graph([VarNode(i) for i in output_mgbvars])
+        fout.write(dump_content)
 
     def make_dev_tensor(value, dtype=None, device=None):
         return as_raw_tensor(value, dtype=dtype, device=device)._dev_tensor()
@@ -507,7 +509,8 @@ def main():
             testcase.keys()
         )
         with open(args.output, "ab") as fout:
-            fout.write(G.dump_graph(*output_mgbvars))
+            dump_content, _ = G.dump_graph(output_mgbvars)
+            fout.write(dump_content)