polish parameter names

parameters within a Layer instance should be unique.

test=develop

python/paddle/fluid/imperative/layers.py

@@ -17,7 +17,7 @@ import contextlib
 import sys
 import numpy as np
 import collections
-
+from .. import unique_name
 from paddle.fluid import core
 from paddle.fluid import framework
 from paddle.fluid.imperative import base
@@ -26,14 +26,33 @@ __all__ = ['Layer', 'PyLayer']
 
 
 class Layer(core.Layer):
-    """Layers composed of operators."""
+    """Layers composed of operators.
+
+    Args:
+        name_scope: prefix name used by the layer to name parameters.
+            If prefix is "my_model/layer_1", parameter name in MyLayer
+            can be "my_model/layer_1/MyLayer/w_n", where w is the parameter
+            base name and n is an unique suffix auto-generated.
+        dtype: data type for the variables in the layer.
+    """
 
-    def __init__(self, dtype=core.VarDesc.VarType.FP32, name=None):
+    def __init__(self, name_scope, dtype=core.VarDesc.VarType.FP32):
+        self._full_name = unique_name.generate(name_scope + "/" +
+                                               self.__class__.__name__)
         self._built = False
         self._dtype = dtype
         self._parameters = collections.OrderedDict()
         self._sub_layers = collections.OrderedDict()
 
+    def full_name(self):
+        """Full name for this layers.
+
+          Full name is composed by name_scope + "/" + MyLayer.__class__.__name__
+
+        Returns full name of this name.
+        """
+        return self._full_name
+
     def parameters(self, include_sublayers=True):
         """Returns a list of Parameters from current and sub-layers.
 

python/paddle/fluid/imperative/nn.py

@@ -27,6 +27,7 @@ __all__ = ['Conv2D', 'Pool2D', 'FC', 'BatchNorm', 'Embedding']
 
 class Conv2D(layers.Layer):
     def __init__(self,
+                 name_scope,
                  num_channels,
                  num_filters,
                  filter_size,
@@ -38,19 +39,17 @@ class Conv2D(layers.Layer):
                  act=None,
                  param_attr=None,
                  bias_attr=None,
-                 name=None,
                  dtype=core.VarDesc.VarType.FP32):
         assert param_attr is not False, "param_attr should not be False here."
-        super(Conv2D, self).__init__(name=name, dtype=dtype)
+        super(Conv2D, self).__init__(name_scope, dtype=dtype)
 
         # TODO(minqiyang): Move this to the top.
         from ..layer_helper import LayerHelper
         self._helper = LayerHelper(
-            type(self).__name__,
+            self.full_name(),
             param_attr=param_attr,
             bias_attr=bias_attr,
             dtype=dtype,
-            name=name,
             act=act)
 
         self._groups = groups
@@ -143,6 +142,7 @@ class Conv2D(layers.Layer):
 
 class Pool2D(layers.Layer):
     def __init__(self,
+                 name_scope,
                  pool_size=-1,
                  pool_type="max",
                  pool_stride=1,
@@ -151,7 +151,6 @@ class Pool2D(layers.Layer):
                  use_cudnn=True,
                  ceil_mode=False,
                  exclusive=True,
-                 name=None,
                  dtype=core.VarDesc.VarType.FP32):
         if pool_type not in ["max", "avg"]:
             raise ValueError(
@@ -166,10 +165,10 @@ class Pool2D(layers.Layer):
         if not isinstance(use_cudnn, bool):
             raise ValueError("use_cudnn should be True or False")
 
-        super(Pool2D, self).__init__(name=name, dtype=dtype)
+        super(Pool2D, self).__init__(name_scope, dtype=dtype)
 
         from ..layer_helper import LayerHelper
-        self._helper = LayerHelper(type(self).__name__, dtype=dtype, name=name)
+        self._helper = LayerHelper(self.full_name(), dtype=dtype)
 
         self._pool_type = pool_type
         self._pool_size = utils.convert_to_list(pool_size, 2, 'pool_size')
@@ -205,25 +204,24 @@ class Pool2D(layers.Layer):
 
 class FC(layers.Layer):
     def __init__(self,
+                 name_scope,
                  size,
                  param_attr=None,
                  bias_attr=None,
                  num_flatten_dims=1,
                  dtype=core.VarDesc.VarType.FP32,
-                 act=None,
-                 name=None):
-        super(FC, self).__init__()
+                 act=None):
+        super(FC, self).__init__(name_scope)
 
         self._size = size
         self._num_flatten_dims = num_flatten_dims
         self._dtype = dtype
         from ..layer_helper import LayerHelper
         self._helper = LayerHelper(
-            'FC',
+            self.full_name(),
             param_attr=param_attr,
             bias_attr=bias_attr,
-            act=act,
-            name=name)
+            act=act)
 
     def _build_once(self, input):
         input_shape = input.shape
@@ -282,6 +280,7 @@ class FC(layers.Layer):
 
 class BatchNorm(layers.Layer):
     def __init__(self,
+                 name_scope,
                  num_channels,
                  act=None,
                  is_test=False,
@@ -292,22 +291,20 @@ class BatchNorm(layers.Layer):
                  dtype=core.VarDesc.VarType.FP32,
                  data_layout='NCHW',
                  in_place=False,
-                 name=None,
                  moving_mean_name=None,
                  moving_variance_name=None,
                  do_model_average_for_mean_and_var=False,
                  fuse_with_relu=False,
                  use_global_stats=False):
-        super(BatchNorm, self).__init__()
+        super(BatchNorm, self).__init__(name_scope)
 
         assert bias_attr is not False, "bias_attr should not be False in batch_norm."
 
         from ..layer_helper import LayerHelper
         self._helper = LayerHelper(
-            'batch_norm',
+            self.full_name(),
             param_attr=param_attr,
             bias_attr=bias_attr,
-            name=name,
             act=act)
 
         if dtype == core.VarDesc.VarType.FP16:
@@ -419,6 +416,7 @@ class Embedding(layers.Layer):
     constructor.
 
     Args:
+        name_scope: See base class.
         size(tuple|list): The shape of the look up table parameter. It should
             have two elements which indicate the size of the dictionary of
             embeddings and the size of each embedding vector respectively.
@@ -446,6 +444,7 @@ class Embedding(layers.Layer):
     """
 
     def __init__(self,
+                 name_scope,
                  size,
                  is_sparse=False,
                  is_distributed=False,
@@ -453,7 +452,7 @@ class Embedding(layers.Layer):
                  param_attr=None,
                  dtype='float32'):
 
-        super(Embedding, self).__init__()
+        super(Embedding, self).__init__(name_scope)
         self._size = size
         self._is_sparse = is_sparse
         self._is_distributed = is_distributed
@@ -468,7 +467,7 @@ class Embedding(layers.Layer):
             assert self._is_sparse is True and self._is_distributed is False
 
         from ..layer_helper import LayerHelper
-        self._helper = LayerHelper('embedding', param_attr=param_attr)
+        self._helper = LayerHelper(self.full_name(), param_attr=param_attr)
         self._w = self._helper.create_parameter(
             attr=self._param_attr,
             shape=self._size,

python/paddle/fluid/layer_helper.py

@@ -34,6 +34,9 @@ class LayerHelper(object):
         self.kwargs = kwargs
         self.layer_type = layer_type
         name = self.kwargs.get('name', None)
+        # TODO(panyx0718, minqiyang): imperative mode
+        # can not use both `layer_type` and `name`. Deprecate LayerHelper
+        # and write a Helper for imperative mode.
         if name is None:
             self.kwargs['name'] = unique_name.generate(self.layer_type)
 

python/paddle/fluid/tests/unittests/test_base_layer.py

@@ -20,10 +20,10 @@ from paddle.fluid.layer_helper import LayerHelper
 
 
 class L1(fluid.imperative.Layer):
-    def __init__(self):
-        super(L1, self).__init__()
+    def __init__(self, prefix):
+        super(L1, self).__init__(prefix)
         self._helper = LayerHelper(
-            'MyLayer',
+            self.full_name(),
             param_attr=fluid.ParamAttr(
                 initializer=fluid.initializer.Constant(value=0.1)))
 
@@ -43,20 +43,20 @@ class L1(fluid.imperative.Layer):
 
 
 class L2(fluid.imperative.Layer):
-    def __init__(self):
-        super(L2, self).__init__()
-        self.layer1 = L1()
-        self.layer2 = L1()
+    def __init__(self, prefix):
+        super(L2, self).__init__(prefix)
+        self.layer1 = L1(self.full_name())
+        self.layer2 = L1(self.full_name())
 
     def forward(self):
         return self.layer1() + self.layer2()
 
 
 class L3(fluid.imperative.Layer):
-    def __init__(self):
-        super(L3, self).__init__()
-        self.layer1 = L2()
-        self.layer2 = L2()
+    def __init__(self, prefix):
+        super(L3, self).__init__(prefix)
+        self.layer1 = L2(self.full_name())
+        self.layer2 = L2(self.full_name())
 
     def forward(self):
         return self.layer1() + self.layer2()
@@ -65,16 +65,23 @@ class L3(fluid.imperative.Layer):
 class TestBaseLayer(unittest.TestCase):
     def test_one_level(self):
         with fluid.imperative.guard():
-            l = L1()
+            l = L1('test_one_level')
             ret = l()
-            self.assertEqual(l.w1.name, "MyLayer_0.w_0")
-            self.assertEqual(l.w2.name, "MyLayer_0.w_1")
+            self.assertEqual(l.w1.name, "test_one_level/L1_0_0.w_0")
+            self.assertEqual(l.w2.name, "test_one_level/L1_0_0.w_1")
             self.assertTrue(np.allclose(ret._numpy(), 0.2 * np.ones([2, 2])))
 
     def test_three_level(self):
         with fluid.imperative.guard():
-            l = L3()
+            l = L3('test_three_level')
+            names = [p.name for p in l.parameters()]
             ret = l()
+            self.assertEqual(names[0], "test_three_level/L3_0/L2_0/L1_0_0.w_0")
+            self.assertEqual(names[1], "test_three_level/L3_0/L2_0/L1_0_0.w_1")
+            self.assertEqual(names[2], "test_three_level/L3_0/L2_0/L1_1_0.w_0")
+            self.assertEqual(names[3], "test_three_level/L3_0/L2_0/L1_1_0.w_1")
+            self.assertEqual(names[4], "test_three_level/L3_0/L2_1/L1_0_0.w_0")
+            self.assertEqual(names[5], "test_three_level/L3_0/L2_1/L1_0_0.w_1")
             self.assertTrue(np.allclose(ret._numpy(), 0.8 * np.ones([2, 2])))
 
 

python/paddle/fluid/tests/unittests/test_imperative.py

@@ -15,7 +15,6 @@
 import contextlib
 import unittest
 import numpy as np
-import sys
 
 import paddle.fluid as fluid
 from paddle.fluid import core
@@ -24,8 +23,8 @@ from test_imperative_base import new_program_scope
 
 
 class MyLayer(fluid.imperative.Layer):
-    def __init__(self):
-        super(MyLayer, self).__init__()
+    def __init__(self, name_scope):
+        super(MyLayer, self).__init__(name_scope)
 
     def forward(self, inputs):
         x = fluid.layers.relu(inputs)
@@ -50,12 +49,14 @@ class MyPyLayer(fluid.imperative.PyLayer):
 
 
 class MLP(fluid.imperative.Layer):
-    def __init__(self):
-        super(MLP, self).__init__()
-        self._fc1 = FC(3,
+    def __init__(self, name_scope):
+        super(MLP, self).__init__(name_scope)
+        self._fc1 = FC(self.full_name(),
+                       3,
                        fluid.ParamAttr(
                            initializer=fluid.initializer.Constant(value=0.1)))
-        self._fc2 = FC(4,
+        self._fc2 = FC(self.full_name(),
+                       4,
                        fluid.ParamAttr(
                            initializer=fluid.initializer.Constant(value=0.1)))
 
@@ -67,8 +68,9 @@ class MLP(fluid.imperative.Layer):
 
 
 class SimpleRNNCell(fluid.imperative.Layer):
-    def __init__(self, step_input_size, hidden_size, output_size, param_attr):
-        super(SimpleRNNCell, self).__init__()
+    def __init__(self, name_scope, step_input_size, hidden_size, output_size,
+                 param_attr):
+        super(SimpleRNNCell, self).__init__(name_scope)
         self.step_input_size = step_input_size
         self.hidden_size = hidden_size
         self.output_size = output_size
@@ -158,10 +160,11 @@ class SimpleRNNCell(fluid.imperative.Layer):
 
 
 class SimpleRNN(fluid.imperative.Layer):
-    def __init__(self):
-        super(SimpleRNN, self).__init__()
+    def __init__(self, name_scope):
+        super(SimpleRNN, self).__init__(name_scope)
         self.seq_len = 4
         self._cell = SimpleRNNCell(
+            self.full_name(),
             3,
             3,
             3,
@@ -205,7 +208,7 @@ class TestImperative(unittest.TestCase):
         with fluid.imperative.guard():
             cl = core.Layer()
             cl.forward([])
-            l = fluid.imperative.Layer()
+            l = fluid.imperative.Layer("l")
             self.assertRaises(NotImplementedError, l.forward, [])
 
     def test_pylayer_func_id(self):
@@ -281,7 +284,7 @@ class TestImperative(unittest.TestCase):
         np_inp = np.array([1.0, 2.0, -1.0], dtype=np.float32)
         with fluid.imperative.guard():
             var_inp = fluid.imperative.base.to_variable(np_inp)
-            l = MyLayer()
+            l = MyLayer("my_layer")
             x = l(var_inp)[0]
             self.assertIsNotNone(x)
             dy_out = x._numpy()
@@ -291,7 +294,7 @@ class TestImperative(unittest.TestCase):
         with new_program_scope():
             inp = fluid.layers.data(
                 name="inp", shape=[3], append_batch_size=False)
-            l = MyLayer()
+            l = MyLayer("my_layer")
             x = l(inp)[0]
             param_grads = fluid.backward.append_backward(
                 x, parameter_list=[l._x_for_debug.name])[0]
@@ -309,7 +312,7 @@ class TestImperative(unittest.TestCase):
         np_inp = np.array([[1.0, 2.0], [3.0, 4.0]], dtype=np.float32)
         with fluid.imperative.guard():
             var_inp = fluid.imperative.base.to_variable(np_inp)
-            mlp = MLP()
+            mlp = MLP("mlp")
             out = mlp(var_inp)
             dy_out = out._numpy()
             out._backward()
@@ -318,7 +321,7 @@ class TestImperative(unittest.TestCase):
         with new_program_scope():
             inp = fluid.layers.data(
                 name="inp", shape=[2, 2], append_batch_size=False)
-            mlp = MLP()
+            mlp = MLP("mlp")
             out = mlp(inp)
             param_grads = fluid.backward.append_backward(
                 out, parameter_list=[mlp._fc1._w.name])[0]
@@ -334,10 +337,10 @@ class TestImperative(unittest.TestCase):
         self.assertTrue(np.allclose(dy_grad, static_grad))
 
         params = mlp.parameters(True)
-        self.assertEqual("FC_0.w_0", params[0].name)
-        self.assertEqual("FC_0.b_0", params[1].name)
-        self.assertEqual("FC_1.w_0", params[2].name)
-        self.assertEqual("FC_1.b_0", params[3].name)
+        self.assertEqual("mlp/MLP_0/FC_0_0.w_0", params[0].name)
+        self.assertEqual("mlp/MLP_0/FC_0_0.b_0", params[1].name)
+        self.assertEqual("mlp/MLP_0/FC_1_0.w_0", params[2].name)
+        self.assertEqual("mlp/MLP_0/FC_1_0.b_0", params[3].name)
         self.assertEqual(len(params), 4)
 
         sublayers = mlp.sublayers(True)
@@ -353,7 +356,7 @@ class TestImperative(unittest.TestCase):
         with fluid.imperative.guard():
             var_inp = fluid.imperative.base.to_variable(np_inp)
             var_inp = fluid.layers.reshape(var_inp, shape=[1, 4, 3])
-            simple_rnn = SimpleRNN()
+            simple_rnn = SimpleRNN("simple_rnn")
             outs, pre_hiddens = simple_rnn.forward(var_inp)
             dy_out = outs[3]._numpy()
             outs[3]._backward()
@@ -364,7 +367,7 @@ class TestImperative(unittest.TestCase):
         with new_program_scope():
             inp = fluid.layers.data(
                 name="inp", shape=[1, 4, 3], append_batch_size=False)
-            simple_rnn = SimpleRNN()
+            simple_rnn = SimpleRNN("simple_rnn")
             outs, pre_hiddens = simple_rnn(inp)
             param_grads = fluid.backward.append_backward(outs[3])
             exe = fluid.Executor(fluid.CPUPlace())

python/paddle/fluid/tests/unittests/test_imperative_gan.py

@@ -28,10 +28,10 @@ from paddle.fluid.imperative.base import to_variable
 
 
 class Discriminator(fluid.imperative.Layer):
-    def __init__(self):
-        super(Discriminator, self).__init__()
-        self._fc1 = FC(size=32, act='elu', name="d_fc1")
-        self._fc2 = FC(size=1, name="d_fc2")
+    def __init__(self, name_scope):
+        super(Discriminator, self).__init__(name_scope)
+        self._fc1 = FC(self.full_name(), size=32, act='elu')
+        self._fc2 = FC(self.full_name(), size=1)
 
     def forward(self, inputs):
         x = self._fc1(inputs)
@@ -39,11 +39,11 @@ class Discriminator(fluid.imperative.Layer):
 
 
 class Generator(fluid.imperative.Layer):
-    def __init__(self):
-        super(Generator, self).__init__()
-        self._fc1 = FC(size=64, act='elu', name="g_fc1")
-        self._fc2 = FC(size=64, act='elu', name="g_fc2")
-        self._fc3 = FC(size=1, name="g_fc3")
+    def __init__(self, name_scope):
+        super(Generator, self).__init__(name_scope)
+        self._fc1 = FC(self.full_name(), size=64, act='elu')
+        self._fc2 = FC(self.full_name(), size=64, act='elu')
+        self._fc3 = FC(self.full_name(), size=1)
 
     def forward(self, inputs):
         x = self._fc1(inputs)
@@ -65,8 +65,8 @@ class TestImperativeMnist(unittest.TestCase):
         scope = fluid.core.Scope()
         with new_program_scope(
                 main=discriminate_p, startup=startup, scope=scope):
-            discriminator = Discriminator()
-            generator = Generator()
+            discriminator = Discriminator("d")
+            generator = Generator("g")
 
             img = fluid.layers.data(
                 name="img", shape=[2, 1], append_batch_size=False)
@@ -93,8 +93,8 @@ class TestImperativeMnist(unittest.TestCase):
             sgd.minimize(d_loss)
 
         with new_program_scope(main=generate_p, startup=startup, scope=scope):
-            discriminator = Discriminator()
-            generator = Generator()
+            discriminator = Discriminator("d")
+            generator = Generator("g")
 
             noise = fluid.layers.data(
                 name="noise", shape=[2, 2], append_batch_size=False)
@@ -134,8 +134,8 @@ class TestImperativeMnist(unittest.TestCase):
             fluid.default_startup_program().random_seed = seed
             fluid.default_main_program().random_seed = seed
 
-            discriminator = Discriminator()
-            generator = Generator()
+            discriminator = Discriminator("d")
+            generator = Generator("g")
             sgd = SGDOptimizer(learning_rate=1e-3)
 
             d_real = discriminator(to_variable(np.ones([2, 1], np.float32)))

python/paddle/fluid/tests/unittests/test_imperative_optimizer.py

@@ -28,6 +28,7 @@ from test_imperative_base import new_program_scope
 
 class SimpleImgConvPool(fluid.imperative.Layer):
     def __init__(self,
+                 name_scope,
                  num_channels,
                  num_filters,
                  filter_size,
@@ -44,9 +45,10 @@ class SimpleImgConvPool(fluid.imperative.Layer):
                  use_cudnn=False,
                  param_attr=None,
                  bias_attr=None):
-        super(SimpleImgConvPool, self).__init__()
+        super(SimpleImgConvPool, self).__init__(name_scope)
 
         self._conv2d = Conv2D(
+            self.full_name(),
             num_channels=num_channels,
             num_filters=num_filters,
             filter_size=filter_size,
@@ -59,6 +61,7 @@ class SimpleImgConvPool(fluid.imperative.Layer):
             use_cudnn=use_cudnn)
 
         self._pool2d = Pool2D(
+            self.full_name(),
             pool_size=pool_size,
             pool_type=pool_type,
             pool_stride=pool_stride,
@@ -73,19 +76,20 @@ class SimpleImgConvPool(fluid.imperative.Layer):
 
 
 class MNIST(fluid.imperative.Layer):
-    def __init__(self, param_attr=None, bias_attr=None):
-        super(MNIST, self).__init__()
+    def __init__(self, name_scope, param_attr=None, bias_attr=None):
+        super(MNIST, self).__init__(name_scope)
 
         self._simple_img_conv_pool_1 = SimpleImgConvPool(
-            1, 20, 5, 2, 2, act="relu")
+            self.full_name(), 1, 20, 5, 2, 2, act="relu")
 
         self._simple_img_conv_pool_2 = SimpleImgConvPool(
-            20, 50, 5, 2, 2, act="relu")
+            self.full_name(), 20, 50, 5, 2, 2, act="relu")
 
         pool_2_shape = 50 * 4 * 4
         SIZE = 10
         scale = (2.0 / (pool_2_shape**2 * SIZE))**0.5
-        self._fc = FC(10,
+        self._fc = FC(self.full_name(),
+                      10,
                       param_attr=fluid.param_attr.ParamAttr(
                           initializer=fluid.initializer.NormalInitializer(
                               loc=0.0, scale=scale)),
@@ -106,7 +110,7 @@ class TestImperativeMnist(unittest.TestCase):
             fluid.default_startup_program().random_seed = seed
             fluid.default_main_program().random_seed = seed
 
-            mnist = MNIST()
+            mnist = MNIST("mnist")
             sgd = SGDOptimizer(learning_rate=1e-3)
             train_reader = paddle.batch(
                 paddle.dataset.mnist.train(), batch_size=128)
@@ -150,7 +154,7 @@ class TestImperativeMnist(unittest.TestCase):
             exe = fluid.Executor(fluid.CPUPlace(
             ) if not core.is_compiled_with_cuda() else fluid.CUDAPlace(0))
 
-            mnist = MNIST()
+            mnist = MNIST("mnist")
             sgd = SGDOptimizer(learning_rate=1e-3)
             train_reader = paddle.batch(
                 paddle.dataset.mnist.train(), batch_size=128)

python/paddle/fluid/tests/unittests/test_imperative_ptb_rnn.py

@@ -28,12 +28,13 @@ from paddle.fluid.backward import append_backward
 
 class SimpleLSTMRNN(fluid.imperative.Layer):
     def __init__(self,
+                 name_scope,
                  hidden_size,
                  num_steps,
                  num_layers=2,
                  init_scale=0.1,
                  dropout=None):
-        super(SimpleLSTMRNN, self).__init__()
+        super(SimpleLSTMRNN, self).__init__(name_scope)
         self._hidden_size = hidden_size
         self._num_layers = num_layers
         self._init_scale = init_scale
@@ -130,13 +131,14 @@ class SimpleLSTMRNN(fluid.imperative.Layer):
 
 class PtbModel(fluid.imperative.Layer):
     def __init__(self,
+                 name_scope,
                  hidden_size,
                  vocab_size,
                  num_layers=2,
                  num_steps=20,
                  init_scale=0.1,
                  dropout=None):
-        super(PtbModel, self).__init__()
+        super(PtbModel, self).__init__(name_scope)
         self.hidden_size = hidden_size
         self.vocab_size = vocab_size
         self.init_scale = init_scale
@@ -146,12 +148,14 @@ class PtbModel(fluid.imperative.Layer):
         from paddle.fluid.layer_helper import LayerHelper
         self._helper = LayerHelper('PtbModel', act="tanh")
         self.simple_lstm_rnn = SimpleLSTMRNN(
+            self.full_name(),
             hidden_size,
             num_steps,
             num_layers=num_layers,
             init_scale=init_scale,
             dropout=dropout)
         self.embedding = Embedding(
+            self.full_name(),
             size=[vocab_size, hidden_size],
             dtype='float32',
             is_sparse=False,
@@ -226,6 +230,7 @@ class TestImperativePtbRnn(unittest.TestCase):
             fluid.default_main_program().random_seed = seed
             # TODO: marsyang1993 Change seed to
             ptb_model = PtbModel(
+                "ptb_model",
                 hidden_size=hidden_size,
                 vocab_size=vocab_size,
                 num_layers=num_layers,
@@ -265,6 +270,7 @@ class TestImperativePtbRnn(unittest.TestCase):
             fluid.default_startup_program().random_seed = seed
             fluid.default_main_program().random_seed = seed
             ptb_model = PtbModel(
+                "ptb_model",
                 hidden_size=hidden_size,
                 vocab_size=vocab_size,
                 num_layers=num_layers,

python/paddle/fluid/tests/unittests/test_imperative_resnet.py

@@ -70,15 +70,17 @@ def optimizer_setting(params):
 
 class ConvBNLayer(fluid.imperative.Layer):
     def __init__(self,
+                 name_scope,
                  num_channels,
                  num_filters,
                  filter_size,
                  stride=1,
                  groups=1,
                  act=None):
-        super(ConvBNLayer, self).__init__()
+        super(ConvBNLayer, self).__init__(name_scope)
 
         self._conv = Conv2D(
+            self.full_name(),
             num_channels=num_channels,
             num_filters=num_filters,
             filter_size=filter_size,
@@ -88,7 +90,7 @@ class ConvBNLayer(fluid.imperative.Layer):
             act=None,
             bias_attr=None)
 
-        self._batch_norm = BatchNorm(num_filters, act=act)
+        self._batch_norm = BatchNorm(self.full_name(), num_filters, act=act)
 
     def forward(self, inputs):
         y = self._conv(inputs)
@@ -98,21 +100,29 @@ class ConvBNLayer(fluid.imperative.Layer):
 
 
 class BottleneckBlock(fluid.imperative.Layer):
-    def __init__(self, num_channels, num_filters, stride, shortcut=True):
-        super(BottleneckBlock, self).__init__()
+    def __init__(self,
+                 name_scope,
+                 num_channels,
+                 num_filters,
+                 stride,
+                 shortcut=True):
+        super(BottleneckBlock, self).__init__(name_scope)
 
         self.conv0 = ConvBNLayer(
+            self.full_name(),
             num_channels=num_channels,
             num_filters=num_filters,
             filter_size=1,
             act='relu')
         self.conv1 = ConvBNLayer(
+            self.full_name(),
             num_channels=num_filters,
             num_filters=num_filters,
             filter_size=3,
             stride=stride,
             act='relu')
         self.conv2 = ConvBNLayer(
+            self.full_name(),
             num_channels=num_filters,
             num_filters=num_filters * 4,
             filter_size=1,
@@ -120,6 +130,7 @@ class BottleneckBlock(fluid.imperative.Layer):
 
         if not shortcut:
             self.short = ConvBNLayer(
+                self.full_name(),
                 num_channels=num_channels,
                 num_filters=num_filters * 4,
                 filter_size=1,
@@ -141,13 +152,13 @@ class BottleneckBlock(fluid.imperative.Layer):
 
         y = fluid.layers.elementwise_add(x=short, y=conv2)
 
-        layer_helper = LayerHelper('elementwise_add_activation', act='relu')
+        layer_helper = LayerHelper(self.full_name(), act='relu')
         return layer_helper.append_activation(y)
 
 
 class ResNet(fluid.imperative.Layer):
-    def __init__(self, layers=50, class_dim=102):
-        super(ResNet, self).__init__()
+    def __init__(self, name_scope, layers=50, class_dim=102):
+        super(ResNet, self).__init__(name_scope)
 
         self.layers = layers
         supported_layers = [50, 101, 152]
@@ -163,9 +174,18 @@ class ResNet(fluid.imperative.Layer):
         num_filters = [64, 128, 256, 512]
 
         self.conv = ConvBNLayer(
-            num_channels=3, num_filters=64, filter_size=7, stride=2, act='relu')
+            self.full_name(),
+            num_channels=3,
+            num_filters=64,
+            filter_size=7,
+            stride=2,
+            act='relu')
         self.pool2d_max = Pool2D(
-            pool_size=3, pool_stride=2, pool_padding=1, pool_type='max')
+            self.full_name(),
+            pool_size=3,
+            pool_stride=2,
+            pool_padding=1,
+            pool_type='max')
 
         self.bottleneck_block_list = []
         num_channels = 64
@@ -175,6 +195,7 @@ class ResNet(fluid.imperative.Layer):
                 bottleneck_block = self.add_sublayer(
                     'bb_%d_%d' % (block, i),
                     BottleneckBlock(
+                        self.full_name(),
                         num_channels=num_channels,
                         num_filters=num_filters[block],
                         stride=2 if i == 0 and block != 0 else 1,
@@ -184,12 +205,13 @@ class ResNet(fluid.imperative.Layer):
                 shortcut = True
 
         self.pool2d_avg = Pool2D(
-            pool_size=7, pool_type='avg', global_pooling=True)
+            self.full_name(), pool_size=7, pool_type='avg', global_pooling=True)
 
         import math
         stdv = 1.0 / math.sqrt(2048 * 1.0)
 
-        self.out = FC(size=class_dim,
+        self.out = FC(self.full_name(),
+                      size=class_dim,
                       act='softmax',
                       param_attr=fluid.param_attr.ParamAttr(
                           initializer=fluid.initializer.Uniform(-stdv, stdv)))
@@ -214,7 +236,7 @@ class TestImperativeResnet(unittest.TestCase):
             fluid.default_startup_program().random_seed = seed
             fluid.default_main_program().random_seed = seed
 
-            resnet = ResNet()
+            resnet = ResNet("resnet")
             optimizer = optimizer_setting(train_parameters)
             np.random.seed(seed)
             import random
@@ -275,7 +297,7 @@ class TestImperativeResnet(unittest.TestCase):
             exe = fluid.Executor(fluid.CPUPlace(
             ) if not core.is_compiled_with_cuda() else fluid.CUDAPlace(0))
 
-            resnet = ResNet()
+            resnet = ResNet("resnet")
             optimizer = optimizer_setting(train_parameters)
 
             np.random.seed(seed)