Merge pull request #761 from wjj19950828/onnx_LN_fuser

Add LayerNorm pass

x2paddle/convert.py

@@ -218,6 +218,11 @@ def onnx2paddle(model_path,
     model = ONNXDecoder(model_path)
     mapper = ONNXOpMapper(model)
     mapper.paddle_graph.build()
+    logging.info("Model optimizing ...")
+    from x2paddle.optimizer.optimizer import GraphOptimizer
+    graph_opt = GraphOptimizer(source_frame="onnx")
+    graph_opt.optimize(mapper.paddle_graph)
+    logging.info("Model optimized.")
     mapper.paddle_graph.gen_model(save_dir)
     if convert_to_lite:
         convert2lite(save_dir, lite_valid_places, lite_model_type)

x2paddle/optimizer/fusion/__init__.py

@@ -38,3 +38,5 @@ from .tf_batchnorm_fuser import TFBatchNormFuser
 from .tf_batchnorm_fuse_pass import TFBatchNormFusePass
 from .trace_fc_fuser import TraceFcFuser
 from .trace_fc_fuse_pass import TraceFcFusePass
+from .onnx_layernorm_fuser import LayerNormFuser
+from .onnx_layernorm_fuse_pass import LayerNormFusePass

x2paddle/optimizer/fusion/onnx_layernorm_fuse_pass.py

+#   Copyright (c) 2022  PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from x2paddle.optimizer.pass_ import Pass
+from x2paddle.optimizer.fusion import LayerNormFuser
+from x2paddle.optimizer.pass_manager import pass_register
+
+
+@pass_register
+class LayerNormFusePass(Pass):
+    name = "onnx_layernorm_fuse_pass"
+
+    def __init__(self):
+        Pass.__init__(self)
+
+    def apply(self, graph):
+        fuser = LayerNormFuser()
+        fuser.operate(graph, match_kind="edge")
+
+
+# register layernorm pass
+onnx_layernorm_fuse_pass = LayerNormFusePass()

x2paddle/optimizer/fusion/onnx_layernorm_fuser.py

+#   Copyright (c) 2022  PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import copy
+import numpy as np
+from collections import OrderedDict
+from x2paddle.optimizer.pattern_matcher import FuseBase
+from x2paddle.core.program import PaddleGraph, PaddleLayer
+from x2paddle.core.util import *
+
+
+class LayerNormFuser(FuseBase):
+    def __init__(self):
+        super(LayerNormFuser, self).__init__()
+
+    def build_pattern(self):
+        """
+        code describe:
+            x2paddle_ln_pre_weight = self.x2paddle_ln_pre_weight
+            x2paddle_ln_pre_bias = self.x2paddle_ln_pre_bias
+            x2paddle_166 = paddle.full(dtype='float32', shape=[1], fill_value=2.0)
+            x2paddle_169 = paddle.full(dtype='float32', shape=[1], fill_value=9.999999747378752e-06)
+            x2paddle_164 = paddle.mean(x=x2paddle_162, axis=[-1], keepdim=True)
+            x2paddle_165 = paddle.subtract(x=x2paddle_162, y=x2paddle_164)
+            x2paddle_167 = paddle.pow(x=x2paddle_165, y=x2paddle_166)
+            x2paddle_168 = paddle.mean(x=x2paddle_167, axis=[-1], keepdim=True)
+            x2paddle_170 = paddle.add(x=x2paddle_168, y=x2paddle_169)
+            x2paddle_171 = paddle.sqrt(x=x2paddle_170)
+            x2paddle_172 = paddle.divide(x=x2paddle_165, y=x2paddle_171)
+            x2paddle_173 = paddle.multiply(x=x2paddle_172, y=x2paddle_ln_pre_weight)
+            x2paddle_174 = paddle.add(x=x2paddle_173, y=x2paddle_ln_pre_bias)
+        """
+
+        def gen_name(id):
+            return "x" + str(id)
+
+        self.pattern.add_layer(
+            "self.create_parameter", inputs={}, outputs=[gen_name(0)])
+        self.pattern.add_layer(
+            "self.create_parameter", inputs={}, outputs=[gen_name(1)])
+        self.pattern.add_layer(
+            "paddle.full",
+            inputs={},
+            outputs=[gen_name(2)],
+            shape=[1],
+            fill_value=0.5)
+        self.pattern.add_layer(
+            "paddle.full",
+            inputs={},
+            outputs=[gen_name(3)],
+            shape=[1],
+            fill_value=9.999999747378752e-06)
+        self.pattern.add_layer(
+            "paddle.mean",
+            inputs={"x": "layernorm-input-0"},
+            outputs=[gen_name(4)],
+            axis=[-1],
+            keep_dim=True)
+        self.pattern.add_layer(
+            "paddle.subtract",
+            inputs={"x": "layernorm-input-0",
+                    "y": gen_name(4)},
+            outputs=[gen_name(5)])
+        self.pattern.add_layer(
+            "paddle.pow",
+            inputs={"x": gen_name(5),
+                    "y": gen_name(2)},
+            outputs=[gen_name(6)])
+        self.pattern.add_layer(
+            "paddle.mean",
+            inputs={"x": gen_name(6)},
+            outputs=[gen_name(7)],
+            axis=[-1],
+            keep_dim=True)
+        self.pattern.add_layer(
+            "paddle.add",
+            inputs={"x": gen_name(7),
+                    "y": gen_name(3)},
+            outputs=[gen_name(8)])
+        self.pattern.add_layer(
+            "paddle.sqrt", inputs={"x": gen_name(8)}, outputs=[gen_name(9)])
+        self.pattern.add_layer(
+            "paddle.divide",
+            inputs={"x": gen_name(5),
+                    "y": gen_name(9)},
+            outputs=[gen_name(10)])
+        self.pattern.add_layer(
+            "paddle.multiply",
+            inputs={"x": gen_name(10),
+                    "y": gen_name(0)},
+            outputs=[gen_name(11)])
+        self.pattern.add_layer(
+            "paddle.add",
+            inputs={"x": gen_name(11),
+                    "y": gen_name(1)},
+            outputs=[gen_name(12)])
+        self.pattern.build(inputs={"input-0": "layernorm-input-0", })
+
+    def insert_new_layer(self, graph, parameters, matches):
+        new_layer, new_layer_id = self.gen_new_layer(parameters, matches)
+        graph.layers[new_layer_id] = new_layer
+        matches_copy = copy.deepcopy(matches)
+        for layer_id, layer in matches_copy.items():
+            if layer.kernel in ["self.create_parameter", "paddle.full"]:
+                matches.pop(layer_id)
+        matches.pop(new_layer_id)
+
+    def gen_new_layer(self, parameters, matches):
+        layer_id_list = list(matches.keys())
+        layer_id_list.sort(key=int)
+        layer_inputs = list()
+        layer_inputs_ids = list()
+        param_name = list()
+        for layer_id, layer in matches.items():
+            if layer.kernel == "paddle.mean":
+                layer_inputs.append(layer.inputs)
+                layer_inputs_ids.append(layer_id)
+            if layer.kernel == "self.create_parameter":
+                param_name.append(layer.outputs[0])
+            if layer.kernel == "paddle.add":
+                output_name = layer.outputs[0]
+        param = parameters[param_name[0]]
+        c = param.shape[0]
+        weight_param = parameters.pop(param_name[0])
+        parameters["{}.weight".format(output_name)] = weight_param
+        bias_param = parameters.pop(param_name[1])
+        parameters["{}.bias".format(output_name)] = bias_param
+        new_layer = PaddleLayer(
+            layer_id_list[0],
+            "paddle.nn.LayerNorm",
+            inputs=layer_inputs[0],
+            outputs=[output_name],
+            normalized_shape=[c])
+        return new_layer, layer_inputs_ids[0]

x2paddle/optimizer/optimizer.py

@@ -36,6 +36,8 @@ class GraphOptimizer(object):
                 "conv2d_add_fuse_pass", "tf_batchnorm_fuse_pass",
                 "prelu_fuse_pass", "transpose_eliminate_pass"
             ]
+        elif source_frame == "onnx":
+            self.passes = ["onnx_layernorm_fuse_pass"]
         else:
             self.passes = []