[MS][Quant] bug fix for lenet quant

mindspore/train/quant/quant.py

@@ -474,8 +474,8 @@ def export(network, *inputs, file_name, mean=127.5, std_dev=127.5, file_format='
 
 
 def convert_quant_network(network,
-                          bn_fold=False,
-                          freeze_bn=10000,
+                          bn_fold=True,
+                          freeze_bn=1e7,
                           quant_delay=(0, 0),
                           num_bits=(8, 8),
                           per_channel=(False, False),
@@ -487,11 +487,11 @@ def convert_quant_network(network,
 
     Args:
         network (Cell): Obtain a pipeline through network for saving graph summary.
-        bn_fold (bool): Flag to used bn fold ops for simulation inference operation. Default: False.
-        freeze_bn (int): Number of steps after which BatchNorm OP parameters used total mean and variance. Default: 0.
+        bn_fold (bool): Flag to used bn fold ops for simulation inference operation. Default: True.
+        freeze_bn (int): Number of steps after which BatchNorm OP parameters used total mean and variance. Default: 1e7.
         quant_delay (int, list or tuple): Number of steps after which weights and activations are quantized during
             eval. The first element represent weights and second element represent data flow. Default: (0, 0)
-        num_bits (int, list or tuple): Number of bits to use for quantizing weights and activations. The first
+        num_bits (int, list or tuple): Number of bits to use for quantize weights and activations. The first
             element represent weights and second element represent data flow. Default: (8, 8)
         per_channel (bool, list or tuple):  Quantization granularity based on layer or on channel. If `True`
             then base on per channel otherwise base on per layer. The first element represent weights

model_zoo/official/cv/lenet_quant/src/lenet.py

@@ -35,7 +35,9 @@ class LeNet5(nn.Cell):
         self.num_class = num_class
 
         self.conv1 = nn.Conv2d(channel, 6, 5, pad_mode='valid')
+        self.bn1 = nn.BatchNorm2d(6)
         self.conv2 = nn.Conv2d(6, 16, 5, pad_mode='valid')
+        self.bn2 = nn.BatchNorm2d(16)
         self.fc1 = nn.Dense(16 * 5 * 5, 120)
         self.fc2 = nn.Dense(120, 84)
         self.fc3 = nn.Dense(84, self.num_class)
@@ -46,9 +48,11 @@ class LeNet5(nn.Cell):
 
     def construct(self, x):
         x = self.conv1(x)
+        x = self.bn1(x)
         x = self.relu(x)
         x = self.max_pool2d(x)
         x = self.conv2(x)
+        x = self.bn2(x)
         x = self.relu(x)
         x = self.max_pool2d(x)
         x = self.flatten(x)

model_zoo/official/cv/lenet_quant/src/lenet_fusion.py

@@ -36,8 +36,8 @@ class LeNet5(nn.Cell):
         self.num_class = num_class
 
         # change `nn.Conv2d` to `nn.Conv2dBnAct`
-        self.conv1 = nn.Conv2dBnAct(channel, 6, 5, pad_mode='valid', activation='relu')
-        self.conv2 = nn.Conv2dBnAct(6, 16, 5, pad_mode='valid', activation='relu')
+        self.conv1 = nn.Conv2dBnAct(channel, 6, 5, pad_mode='valid', has_bn=True, activation='relu')
+        self.conv2 = nn.Conv2dBnAct(6, 16, 5, pad_mode='valid', has_bn=True, activation='relu')
         # change `nn.Dense` to `nn.DenseBnAct`
         self.fc1 = nn.DenseBnAct(16 * 5 * 5, 120, activation='relu')
         self.fc2 = nn.DenseBnAct(120, 84, activation='relu')

model_zoo/official/cv/lenet_quant/src/lenet_quant.py

@@ -0,0 +1,61 @@
+# Copyright 2020 Huawei Technologies Co., Ltd
+#
+# 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.
+# ============================================================================
+"""Manual construct network for LeNet"""
+
+import mindspore.nn as nn
+
+
+class LeNet5(nn.Cell):
+    """
+    Lenet network
+
+    Args:
+        num_class (int): Num classes. Default: 10.
+
+    Returns:
+        Tensor, output tensor
+    Examples:
+        >>> LeNet(num_class=10)
+
+    """
+
+    def __init__(self, num_class=10, channel=1):
+        super(LeNet5, self).__init__()
+        self.num_class = num_class
+
+        self.conv1 = nn.Conv2dBnFoldQuant(channel, 6, 5, pad_mode='valid', per_channel=True, quant_delay=900)
+        self.conv2 = nn.Conv2dBnFoldQuant(6, 16, 5, pad_mode='valid', per_channel=True, quant_delay=900)
+        self.fc1 = nn.DenseQuant(16 * 5 * 5, 120, per_channel=True, quant_delay=900)
+        self.fc2 = nn.DenseQuant(120, 84, per_channel=True, quant_delay=900)
+        self.fc3 = nn.DenseQuant(84, self.num_class, per_channel=True, quant_delay=900)
+
+        self.relu = nn.ActQuant(nn.ReLU(), per_channel=False, quant_delay=900)
+        self.max_pool2d = nn.MaxPool2d(kernel_size=2, stride=2)
+        self.flatten = nn.Flatten()
+
+    def construct(self, x):
+        x = self.conv1(x)
+        x = self.relu(x)
+        x = self.max_pool2d(x)
+        x = self.conv2(x)
+        x = self.relu(x)
+        x = self.max_pool2d(x)
+        x = self.flatten(x)
+        x = self.fc1(x)
+        x = self.relu(x)
+        x = self.fc2(x)
+        x = self.relu(x)
+        x = self.fc3(x)
+        return x

model_zoo/official/cv/lenet_quant/train_quant.py

@@ -57,7 +57,7 @@ if __name__ == "__main__":
     load_param_into_net(network, param_dict)
 
     # convert fusion network to quantization aware network
-    network = quant.convert_quant_network(network, quant_delay=0, bn_fold=False, freeze_bn=10000)
+    network = quant.convert_quant_network(network, quant_delay=900, per_channel=[True, False], symmetric=[False, False])
 
     # define network loss
     net_loss = nn.SoftmaxCrossEntropyWithLogits(is_grad=False, sparse=True, reduction="mean")