diff --git a/python/paddle/fluid/dygraph/layers.py b/python/paddle/fluid/dygraph/layers.py index 39e06e3486cd5479f69cbdb67811f03bd9646123..6b78e2abb32ab3f134fc7bae6fbd203a2730cf66 100644 --- a/python/paddle/fluid/dygraph/layers.py +++ b/python/paddle/fluid/dygraph/layers.py @@ -48,6 +48,12 @@ class Layer(core.Layer): self._helper = LayerObjectHelper(self._full_name) + def train(self): + framework._dygraph_tracer()._train_mode() + + def eval(self): + framework._dygraph_tracer()._eval_mode() + def full_name(self): """Full name for this layers. @@ -254,6 +260,12 @@ class PyLayer(core.PyLayer): def __init__(self): super(PyLayer, self).__init__() + def train(self): + framework._dygraph_tracer()._train_mode() + + def eval(self): + framework._dygraph_tracer()._eval_mode() + @classmethod def _do_forward(cls, inputs): return cls._to_tuple(cls.forward(inputs)) diff --git a/python/paddle/fluid/dygraph/tracer.py b/python/paddle/fluid/dygraph/tracer.py index ad938188bfbb5e6343eae43bc0d611cd8c0a8506..ee37ffab2cb7521b83108a40febcfe88cab28633 100644 --- a/python/paddle/fluid/dygraph/tracer.py +++ b/python/paddle/fluid/dygraph/tracer.py @@ -40,6 +40,7 @@ class Tracer(core.Tracer): self._ops = defaultdict() self._vars = defaultdict() self._trace_id = 0 + self._train_mode = True def trace_var(self, name, var): self._vars[name] = var @@ -51,27 +52,45 @@ class Tracer(core.Tracer): def trace_op(self, op, inputs, outputs, stop_gradient=False): # TODO(minqiyang): remove this line after we take apart all # backward grads and forward variables - op.inputs = inputs - inps = defaultdict(list) - for k, vars in six.iteritems(inputs): - if isinstance(vars, framework.Variable): - op.previous_ops.append(vars.op) - inps[k].append(vars._ivar) - elif isinstance(vars, list) or isinstance(vars, tuple): - for var in vars: - op.previous_ops.append(var.op) - inps[k].append(var._ivar) - - op.outputs = outputs - outs = defaultdict(list) - for k, vars in six.iteritems(outputs): - if isinstance(vars, framework.Variable): - vars.op = op - outs[k].append(vars._ivar) - elif isinstance(vars, list) or isinstance(vars, tuple): - for var in vars: - var.op = op - outs[k].append(var._ivar) + if self._train_mode: + op.inputs = inputs + inps = defaultdict(list) + for k, vars in six.iteritems(inputs): + if isinstance(vars, framework.Variable): + inps[k].append(vars._ivar) + elif isinstance(vars, list) or isinstance(vars, tuple): + for var in vars: + inps[k].append(var._ivar) + + op.outputs = outputs + outs = defaultdict(list) + for k, vars in six.iteritems(outputs): + if isinstance(vars, framework.Variable): + outs[k].append(vars._ivar) + elif isinstance(vars, list) or isinstance(vars, tuple): + for var in vars: + outs[k].append(var._ivar) + else: + inps = defaultdict(list) + for k, vars in six.iteritems(inputs): + if isinstance(vars, framework.Variable): + op.previous_ops.append(vars.op) + inps[k].append(vars._ivar) + elif isinstance(vars, list) or isinstance(vars, tuple): + for var in vars: + op.previous_ops.append(var.op) + inps[k].append(var._ivar) + + op.outputs = outputs + outs = defaultdict(list) + for k, vars in six.iteritems(outputs): + if isinstance(vars, framework.Variable): + vars.op = op + outs[k].append(vars._ivar) + elif isinstance(vars, list) or isinstance(vars, tuple): + for var in vars: + var.op = op + outs[k].append(var._ivar) # record op's trace id op.iop._trace_id = self._trace_id @@ -80,7 +99,7 @@ class Tracer(core.Tracer): framework._current_expected_place(), stop_gradient) - if not stop_gradient: + if not stop_gradient and self._train_mode: self._trace_id += 1 self._ops[op.iop._trace_id] = op @@ -98,3 +117,9 @@ class Tracer(core.Tracer): for k, v in six.iteritems(outputs): if k in backward_refs: op.backward_refs[k] = outputs[k] + + def _train_mode(self): + self._train_mode = True + + def _eval_mode(self): + self._train_mode = False diff --git a/python/paddle/fluid/tests/unittests/test_dygraph_multi_forward.py b/python/paddle/fluid/tests/unittests/test_dygraph_multi_forward.py new file mode 100644 index 0000000000000000000000000000000000000000..8b8fdcc887beb4879b2ce1101184dabe6f819acf --- /dev/null +++ b/python/paddle/fluid/tests/unittests/test_dygraph_multi_forward.py @@ -0,0 +1,201 @@ +# Copyright (c) 2018 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 __future__ import print_function + +import contextlib +import unittest +import numpy as np +import six + +import paddle +import paddle.fluid as fluid +from paddle.fluid import core +from paddle.fluid.optimizer import SGDOptimizer +from paddle.fluid.dygraph.nn import Conv2D, Pool2D, FC +from paddle.fluid.dygraph.base import to_variable +from test_imperative_base import new_program_scope + + +class SimpleImgConvPool(fluid.dygraph.Layer): + def __init__(self, + name_scope, + num_channels, + num_filters, + filter_size, + pool_size, + pool_stride, + pool_padding=0, + pool_type='max', + global_pooling=False, + conv_stride=1, + conv_padding=0, + conv_dilation=1, + conv_groups=1, + act=None, + use_cudnn=False, + param_attr=None, + bias_attr=None): + super(SimpleImgConvPool, self).__init__(name_scope) + + self._conv2d = Conv2D( + self.full_name(), + num_channels=num_channels, + num_filters=num_filters, + filter_size=filter_size, + stride=conv_stride, + padding=conv_padding, + dilation=conv_dilation, + groups=conv_groups, + param_attr=None, + bias_attr=None, + use_cudnn=use_cudnn) + + self._pool2d = Pool2D( + self.full_name(), + pool_size=pool_size, + pool_type=pool_type, + pool_stride=pool_stride, + pool_padding=pool_padding, + global_pooling=global_pooling, + use_cudnn=use_cudnn) + + def forward(self, inputs): + x = self._conv2d(inputs) + x = self._pool2d(x) + return x + + +class MNIST(fluid.dygraph.Layer): + def __init__(self, name_scope): + super(MNIST, self).__init__(name_scope) + + self._simple_img_conv_pool_1 = SimpleImgConvPool( + self.full_name(), 1, 20, 5, 2, 2, act="relu") + + self._simple_img_conv_pool_2 = SimpleImgConvPool( + 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(self.full_name(), + 10, + param_attr=fluid.param_attr.ParamAttr( + initializer=fluid.initializer.NormalInitializer( + loc=0.0, scale=scale)), + act="softmax") + + def forward(self, inputs): + x = self._simple_img_conv_pool_1(inputs) + x = self._simple_img_conv_pool_2(x) + x = self._fc(x) + return x + + +class TestDygraphMultiForward(unittest.TestCase): + def test_mnist_forward_float32(self): + seed = 90 + epoch_num = 1 + with fluid.dygraph.guard(): + fluid.default_startup_program().random_seed = seed + fluid.default_main_program().random_seed = seed + + mnist = MNIST("mnist") + sgd = SGDOptimizer(learning_rate=1e-3) + train_reader = paddle.batch( + paddle.dataset.mnist.train(), batch_size=128, drop_last=True) + + dy_param_init_value = {} + mnist.eval() + for epoch in range(epoch_num): + for batch_id, data in enumerate(train_reader()): + dy_x_data = np.array( + [x[0].reshape(1, 28, 28) + for x in data]).astype('float32') + y_data = np.array( + [x[1] for x in data]).astype('int64').reshape(128, 1) + + img = to_variable(dy_x_data) + label = to_variable(y_data) + label.stop_gradient = True + + cost = mnist(img) + loss = fluid.layers.cross_entropy(cost, label) + avg_loss = fluid.layers.mean(loss) + + dy_out = avg_loss.numpy() + + if epoch == 0 and batch_id == 0: + for param in mnist.parameters(): + dy_param_init_value[param.name] = param.numpy() + + with new_program_scope(): + fluid.default_startup_program().random_seed = seed + fluid.default_main_program().random_seed = seed + + exe = fluid.Executor(fluid.CPUPlace( + ) if not core.is_compiled_with_cuda() else fluid.CUDAPlace(0)) + + mnist = MNIST("mnist") + sgd = SGDOptimizer(learning_rate=1e-3) + train_reader = paddle.batch( + paddle.dataset.mnist.train(), batch_size=128, drop_last=True) + + img = fluid.layers.data( + name='pixel', shape=[1, 28, 28], dtype='float32') + label = fluid.layers.data(name='label', shape=[1], dtype='int64') + cost = mnist(img) + loss = fluid.layers.cross_entropy(cost, label) + avg_loss = fluid.layers.mean(loss) + + # initialize params and fetch them + static_param_init_value = {} + static_param_name_list = [] + for param in mnist.parameters(): + static_param_name_list.append(param.name) + + out = exe.run(fluid.default_startup_program(), + fetch_list=static_param_name_list) + + for i in range(len(static_param_name_list)): + static_param_init_value[static_param_name_list[i]] = out[i] + + for epoch in range(epoch_num): + for batch_id, data in enumerate(train_reader()): + static_x_data = np.array( + [x[0].reshape(1, 28, 28) + for x in data]).astype('float32') + y_data = np.array( + [x[1] for x in data]).astype('int64').reshape([128, 1]) + + fetch_list = [avg_loss.name] + out = exe.run( + fluid.default_main_program(), + feed={"pixel": static_x_data, + "label": y_data}, + fetch_list=fetch_list) + + static_out = out[0] + + self.assertTrue(np.allclose(dy_x_data.all(), static_x_data.all())) + + for key, value in six.iteritems(static_param_init_value): + self.assertTrue(np.allclose(value, dy_param_init_value[key])) + + self.assertTrue(np.allclose(static_out, dy_out)) + + +if __name__ == '__main__': + unittest.main()