# 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. import unittest import numpy as np from op_test import OpTest import paddle import paddle.fluid as fluid from paddle.fluid import core from paddle.fluid.framework import _test_eager_guard from paddle.fluid.op import Operator class TestAdamOp1(OpTest): def setUp(self): '''Test Adam Op with supplied attributes''' self.op_type = "adam" param = np.random.uniform(-1, 1, (102, 105)).astype("float32") grad = np.random.uniform(-1, 1, (102, 105)).astype("float32") moment1 = np.random.uniform(-1, 1, (102, 105)).astype("float32") # The second moment is positive moment2 = np.random.random((102, 105)).astype("float32") learning_rate = 0.004 beta1 = 0.78 beta2 = 0.836 epsilon = 1e-4 beta1_pow = beta1**10 beta2_pow = beta2**10 self.inputs = { 'Param': param, 'Grad': grad, 'Moment1': moment1, 'Moment2': moment2, 'LearningRate': np.array([learning_rate]).astype("float32"), 'Beta1Pow': np.array([beta1_pow]).astype("float32"), 'Beta2Pow': np.array([beta2_pow]).astype("float32"), } self.attrs = {'epsilon': epsilon, 'beta1': beta1, 'beta2': beta2} param_out, moment1_out, moment2_out = adam_step(self.inputs, self.attrs) self.outputs = { 'Moment1Out': moment1_out, 'Moment2Out': moment2_out, 'ParamOut': param_out, 'Beta1PowOut': np.array([beta1_pow]).astype("float32") * beta1, 'Beta2PowOut': np.array([beta2_pow]).astype("float32") * beta2, } def test_check_output(self): self.check_output() class TestAdamOp2(OpTest): def set_shape(self): self.shape = (102, 105) def setUp(self): '''Test Adam Op with supplied attributes''' self.op_type = "adam" self.set_shape() param = np.random.uniform(-1, 1, self.shape).astype("float32") grad = np.random.uniform(-1, 1, self.shape).astype("float32") moment1 = np.random.uniform(-1, 1, self.shape).astype("float32") # The second moment is positive moment2 = np.random.random(self.shape).astype("float32") learning_rate = 0.001 beta1 = 0.9 beta2 = 0.999 epsilon = 1e-8 beta1_pow = beta1**10 beta2_pow = beta2**10 self.inputs = { 'Param': param, 'Grad': grad, 'Moment1': moment1, 'Moment2': moment2, 'LearningRate': np.array([learning_rate]).astype("float32"), 'Beta1Pow': np.array([beta1_pow]).astype("float32"), 'Beta2Pow': np.array([beta2_pow]).astype("float32"), } attributes = {'epsilon': epsilon, 'beta1': beta1, 'beta2': beta2} param_out, moment1_out, moment2_out = adam_step(self.inputs, attributes) self.outputs = { 'Moment1Out': moment1_out, 'Moment2Out': moment2_out, 'ParamOut': param_out, 'Beta1PowOut': np.array([beta1_pow]).astype("float32") * beta1, 'Beta2PowOut': np.array([beta2_pow]).astype("float32") * beta2, } def test_check_output(self): self.check_output() class TestAdamOnlyTailOp(TestAdamOp2): def set_shape(self): self.shape = 3 class TestAdamOpMultipleSteps(OpTest): def setUp(self): '''Test Adam Operator with supplied attributes''' self.op_type = "adam" self.num_steps = 10 param = np.random.uniform(-1, 1, (102, 105)).astype("float32") grad = np.random.uniform(-1, 1, (102, 105)).astype("float32") moment1 = np.random.uniform(-1, 1, (102, 105)).astype("float32") # The second moment is positive moment2 = np.random.random((102, 105)).astype("float32") learning_rate = 0.001 self.beta1 = 0.9 self.beta2 = 0.999 epsilon = 1e-8 self.beta1_pow = self.beta1**10 self.beta2_pow = self.beta2**10 self.inputs = { 'Param': param, 'Grad': grad, 'Moment1': moment1, 'Moment2': moment2, 'LearningRate': np.array([learning_rate]).astype("float32"), 'Beta1Pow': np.array([self.beta1_pow]).astype("float32"), 'Beta2Pow': np.array([self.beta2_pow]).astype("float32"), } self.attrs = { 'epsilon': epsilon, 'beta1': self.beta1, 'beta2': self.beta2, } def test_check_output(self): for _ in range(self.num_steps): param_out, moment1_out, moment2_out = adam_step( self.inputs, self.attrs ) beta1_pow_out = self.inputs['Beta1Pow'] * self.beta1 beta2_pow_out = self.inputs['Beta2Pow'] * self.beta2 self.outputs = { 'Moment1Out': moment1_out, 'Moment2Out': moment2_out, 'ParamOut': param_out, 'Beta1PowOut': beta1_pow_out, 'Beta2PowOut': beta2_pow_out, } # Verify output for this step self.check_output() # Output of this step becomes input for next step self.inputs['Param'] = param_out self.inputs['Moment1'] = moment1_out self.inputs['Moment2'] = moment2_out # Update powers of Beta1 and Beta2 for next time step self.inputs['Beta1Pow'] = beta1_pow_out self.inputs['Beta2Pow'] = beta2_pow_out # Randomize gradient for next step self.inputs['Grad'] = np.random.uniform(-1, 1, (102, 105)).astype( "float32" ) def test_api_eager_dygraph(self): with _test_eager_guard(): self.test_check_output() def adam_step(inputs, attributes): ''' Simulate one step of the adam optimizer :param inputs: dict of inputs :param attributes: dict of attributes :return tuple: tuple of output param, moment1, moment2, beta1 power accumulator and beta2 power accumulator ''' param = inputs['Param'] grad = inputs['Grad'] moment1 = inputs['Moment1'] moment2 = inputs['Moment2'] lr = inputs['LearningRate'] beta1_pow = inputs['Beta1Pow'] beta2_pow = inputs['Beta2Pow'] epsilon = attributes['epsilon'] if 'beta1' in attributes: beta1 = attributes['beta1'] else: beta1 = inputs['Beta1Tensor'][0] if 'beta2' in attributes: beta2 = attributes['beta2'] else: beta2 = inputs['Beta2Tensor'][0] moment1_out = beta1 * moment1 + (1 - beta1) * grad moment2_out = beta2 * moment2 + (1 - beta2) * np.square(grad) lr_t = lr * np.sqrt(1 - beta2_pow) / (1 - beta1_pow) param_out = param - lr_t * (moment1_out / (np.sqrt(moment2_out) + epsilon)) return param_out, moment1_out, moment2_out def adamw_step(inputs, attributes): ''' Simulate one step of the adam optimizer :param inputs: dict of inputs :param attributes: dict of attributes :return tuple: tuple of output param, moment1, moment2, beta1 power accumulator and beta2 power accumulator ''' param = inputs['Param'] grad = inputs['Grad'] moment1 = inputs['Moment1'] moment2 = inputs['Moment2'] lr = inputs['LearningRate'] beta1_pow = inputs['Beta1Pow'] beta2_pow = inputs['Beta2Pow'] epsilon = attributes['epsilon'] coeff = attributes["coeff"] if attributes.get("with_decay", False): decay = 1.0 - lr * coeff param2 = param * decay param = param2.copy() if 'beta1' in attributes: beta1 = attributes['beta1'] else: beta1 = inputs['Beta1Tensor'][0] if 'beta2' in attributes: beta2 = attributes['beta2'] else: beta2 = inputs['Beta2Tensor'][0] moment1_out = beta1 * moment1 + (1 - beta1) * grad moment2_out = beta2 * moment2 + (1 - beta2) * np.square(grad) lr_t = lr * np.sqrt(1 - beta2_pow) / (1 - beta1_pow) param_out = param - lr_t * (moment1_out / (np.sqrt(moment2_out) + epsilon)) return param_out, moment1_out, moment2_out def adam_step_sparse( inputs, attributes, height, rows, row_numel, np_grad, lazy_mode ): ''' Simulate one step of the adam optimizer :param inputs: dict of inputs :param attributes: dict of attributes :return tuple: tuple of output param, moment1, moment2, beta1 power accumulator and beta2 power accumulator ''' param = inputs['Param'] # grad = inputs['Grad'] moment1 = inputs['Moment1'] moment2 = inputs['Moment2'] lr = inputs['LearningRate'] beta1_pow = inputs['Beta1Pow'] beta2_pow = inputs['Beta2Pow'] beta1 = attributes['beta1'] beta2 = attributes['beta2'] epsilon = attributes['epsilon'] moment1_out = np.zeros(shape=[height, row_numel]) moment2_out = np.zeros(shape=[height, row_numel]) param_out = np.zeros(shape=[height, row_numel]) def update_row(row_id, update_value): moment1_out[row_id] = ( beta1 * moment1[row_id] + (1 - beta1) * update_value ) moment2_out[row_id] = beta2 * moment2[row_id] + (1 - beta2) * np.square( update_value ) lr_t = lr * np.sqrt(1 - beta2_pow) / (1 - beta1_pow) param_out[row_id] = param[row_id] - lr_t * ( moment1_out[row_id] / (np.sqrt(moment2_out[row_id]) + epsilon) ) if lazy_mode: for idx, row_id in enumerate(rows): update_row(row_id, np_grad[idx]) else: for row_id in range(param_out.shape[0]): update_value = np.zeros(np_grad[0].shape).astype("float32") if row_id in rows: update_value = np_grad[rows.index(row_id)] update_row(row_id, update_value) return param_out, moment1_out, moment2_out class TestSparseAdamOp(unittest.TestCase): def setup(self, scope, place, lazy_mode): beta1 = 0.78 beta2 = 0.836 epsilon = 1e-4 beta1_pow = np.array([beta1**10]).astype("float32") beta2_pow = np.array([beta2**10]).astype("float32") height = 10 rows = [0, 4, 7] self.rows = rows row_numel = 12 self.row_numel = row_numel self.dense_inputs = { "Param": np.full((height, row_numel), 5.0).astype("float32"), "Moment1": np.full((height, row_numel), 5.0).astype("float32"), "Moment2": np.full((height, row_numel), 5.0).astype("float32"), 'Beta1Pow': beta1_pow, 'Beta2Pow': beta2_pow, "LearningRate": np.full((1), 2.0).astype("float32"), } self.init_output = np.full((height, row_numel), 0.0).astype("float32") self.attrs = { 'epsilon': epsilon, 'beta1': beta1, 'beta2': beta2, 'min_row_size_to_use_multithread': 2, } grad_selected_rows = scope.var('Grad').get_selected_rows() grad_selected_rows.set_height(height) grad_selected_rows.set_rows(rows) np_array = np.ones((len(rows), row_numel)).astype("float32") np_array[0, 0] = 2.0 np_array[2, 8] = 4.0 grad_tensor = grad_selected_rows.get_tensor() grad_tensor.set(np_array, place) self.sparse_inputs = ["Grad"] param_out, mom1, mom2 = adam_step_sparse( self.dense_inputs, self.attrs, height, rows, row_numel, np_array, lazy_mode, ) self.outputs = { "ParamOut": param_out, "Moment1Out": mom1, "Moment2Out": mom2, 'Beta1PowOut': beta1_pow * beta1, 'Beta2PowOut': beta2_pow * beta2, } def check_with_place(self, place, lazy_mode): scope = core.Scope() self.setup(scope, place, lazy_mode) op_args = dict() op_args['lazy_mode'] = lazy_mode for key, np_array in self.dense_inputs.items(): var = scope.var(key).get_tensor() var.set(np_array, place) op_args[key] = key for s in self.sparse_inputs: op_args[s] = s for s in self.outputs: var = scope.var(s).get_tensor() var.set(self.init_output, place) op_args[s] = s for k in self.attrs: op_args[k] = self.attrs[k] # create and run sgd operator adam_op = Operator("adam", **op_args) adam_op.run(scope, place) for key, np_array in self.outputs.items(): out_var = scope.var(key).get_tensor() actual = np.array(out_var) actual = actual.reshape([actual.size]) np_array = np_array.reshape([np_array.size]) for i in range(np_array.size): self.assertLess((actual[i] - np_array[i]), 0.00001) def test_sparse_adam(self): places = [core.CPUPlace()] if core.is_compiled_with_cuda(): places.append(core.CUDAPlace(0)) for place in places: for lazy_mode in (True, False): self.check_with_place(place, lazy_mode) class TestAdamOpBetaVariable(OpTest): def setUp(self): '''Test Adam Op with beta as Variable''' self.op_type = "adam" param = np.random.uniform(-1, 1, (102, 105)).astype("float32") grad = np.random.uniform(-1, 1, (102, 105)).astype("float32") moment1 = np.random.uniform(-1, 1, (102, 105)).astype("float32") # The second moment is positive moment2 = np.random.random((102, 105)).astype("float32") beta1 = 0.85 beta2 = 0.95 learning_rate = 0.001 epsilon = 1e-8 beta1_pow = beta1**10 beta2_pow = beta2**10 self.inputs = { 'Param': param, 'Grad': grad, 'Moment1': moment1, 'Moment2': moment2, 'LearningRate': np.array([learning_rate]).astype("float32"), 'Beta1Pow': np.array([beta1_pow]).astype("float32"), 'Beta2Pow': np.array([beta2_pow]).astype("float32"), "Beta1Tensor": np.array([beta1]).astype("float32"), "Beta2Tensor": np.array([beta2]).astype("float32"), } attributes = {'epsilon': epsilon} param_out, moment1_out, moment2_out = adam_step(self.inputs, attributes) self.outputs = { 'Moment1Out': moment1_out, 'Moment2Out': moment2_out, 'ParamOut': param_out, 'Beta1PowOut': np.array([beta1_pow]).astype("float32") * beta1, 'Beta2PowOut': np.array([beta2_pow]).astype("float32") * beta2, } def test_check_output(self): self.check_output() class TestAdamOpBetaEpsilonVariable(OpTest): def setUp(self): '''Test Adam Op with beta/epsilon as Variable''' self.op_type = "adam" param = np.random.uniform(-1, 1, (102, 105)).astype("float32") grad = np.random.uniform(-1, 1, (102, 105)).astype("float32") moment1 = np.random.uniform(-1, 1, (102, 105)).astype("float32") # The second moment is positive moment2 = np.random.random((102, 105)).astype("float32") beta1 = 0.85 beta2 = 0.95 learning_rate = 0.001 epsilon = 1e-8 beta1_pow = beta1**10 beta2_pow = beta2**10 self.inputs = { 'Param': param, 'Grad': grad, 'Moment1': moment1, 'Moment2': moment2, 'LearningRate': np.array([learning_rate]).astype("float32"), 'Beta1Pow': np.array([beta1_pow]).astype("float32"), 'Beta2Pow': np.array([beta2_pow]).astype("float32"), "Beta1Tensor": np.array([beta1]).astype("float32"), "Beta2Tensor": np.array([beta2]).astype("float32"), "EpsilonTensor": np.array([epsilon]).astype("float32"), } attributes = {'epsilon': epsilon} param_out, moment1_out, moment2_out = adam_step(self.inputs, attributes) self.outputs = { 'Moment1Out': moment1_out, 'Moment2Out': moment2_out, 'ParamOut': param_out, 'Beta1PowOut': np.array([beta1_pow]).astype("float32") * beta1, 'Beta2PowOut': np.array([beta2_pow]).astype("float32") * beta2, } def test_check_output(self): self.check_output() class TestAdamOpWithGlobalBetaPow(OpTest): def setUp(self): '''Test Adam Op with global_beta_pow''' self.op_type = "adam" param = np.random.uniform(-1, 1, (102, 105)).astype("float32") grad = np.random.uniform(-1, 1, (102, 105)).astype("float32") moment1 = np.random.uniform(-1, 1, (102, 105)).astype("float32") # The second moment is positive moment2 = np.random.random((102, 105)).astype("float32") beta1 = 0.85 beta2 = 0.95 learning_rate = 0.001 epsilon = 1e-8 beta1_pow = beta1**10 beta2_pow = beta2**10 self.inputs = { 'Param': param, 'Grad': grad, 'Moment1': moment1, 'Moment2': moment2, 'LearningRate': np.array([learning_rate]).astype("float32"), 'Beta1Pow': np.array([beta1_pow]).astype("float32"), 'Beta2Pow': np.array([beta2_pow]).astype("float32"), "Beta1Tensor": np.array([beta1]).astype("float32"), "Beta2Tensor": np.array([beta2]).astype("float32"), "EpsilonTensor": np.array([epsilon]).astype("float32"), } attributes = {'epsilon': epsilon} param_out, moment1_out, moment2_out = adam_step(self.inputs, attributes) self.attrs = {'use_global_beta_pow': True} # use_global_beta_pow=True, Beta1PowOut and Beta2PowOut are empty. self.outputs = { 'Moment1Out': moment1_out, 'Moment2Out': moment2_out, 'ParamOut': param_out, 'Beta1PowOut': np.array([]), 'Beta2PowOut': np.array([]), } def test_check_output(self): self.check_output() class TestAdamOpWithSkipUpdate(OpTest): def setUp(self): '''Test Adam Op with global_beta_pow''' self.op_type = "adam" param = np.random.uniform(-1, 1, (102, 105)).astype("float32") grad = np.random.uniform(-1, 1, (102, 105)).astype("float32") moment1 = np.random.uniform(-1, 1, (102, 105)).astype("float32") # The second moment is positive moment2 = np.random.random((102, 105)).astype("float32") beta1 = 0.85 beta2 = 0.95 learning_rate = 0.001 epsilon = 1e-8 beta1_pow = beta1**10 beta2_pow = beta2**10 self.inputs = { 'Param': param, 'Grad': grad, 'Moment1': moment1, 'Moment2': moment2, 'LearningRate': np.array([learning_rate]).astype("float32"), 'Beta1Pow': np.array([beta1_pow]).astype("float32"), 'Beta2Pow': np.array([beta2_pow]).astype("float32"), "Beta1Tensor": np.array([beta1]).astype("float32"), "Beta2Tensor": np.array([beta2]).astype("float32"), "EpsilonTensor": np.array([epsilon]).astype("float32"), "SkipUpdate": np.array([True]).astype("bool"), } attributes = {'epsilon': epsilon} self.attrs = {'use_global_beta_pow': True} # use_global_beta_pow=True, Beta1PowOut and Beta2PowOut are empty. self.outputs = { 'Moment1Out': moment1, 'Moment2Out': moment2, 'ParamOut': param, 'Beta1PowOut': self.inputs['Beta1Pow'], 'Beta2PowOut': self.inputs['Beta2Pow'], } def test_check_output(self): self.check_output() class TestAdamOpV2(unittest.TestCase): def test_adam_op(self): place = fluid.CPUPlace() shape = [2, 3, 8, 8] exe = fluid.Executor(place) train_prog = fluid.Program() startup = fluid.Program() with fluid.program_guard(train_prog, startup): with fluid.unique_name.guard(): data = fluid.data(name="data", shape=shape) conv = fluid.layers.conv2d(data, 8, 3) loss = fluid.layers.reduce_mean(conv) beta1 = fluid.layers.create_global_var( shape=[1], value=0.85, dtype='float32', persistable=True ) beta2 = fluid.layers.create_global_var( shape=[1], value=0.95, dtype='float32', persistable=True ) betas = [beta1, beta2] opt = paddle.optimizer.Adam( learning_rate=1e-5, beta1=beta1, beta2=beta2, weight_decay=0.01, epsilon=1e-8, ) opt.minimize(loss) exe.run(startup) data_np = np.random.random(shape).astype('float32') rets = exe.run(train_prog, feed={"data": data_np}, fetch_list=[loss]) assert rets[0] is not None def test_adam_op_dygraph(self): paddle.disable_static() value = np.arange(26).reshape(2, 13).astype("float32") a = fluid.dygraph.to_variable(value) linear = paddle.nn.Linear(13, 5) adam = paddle.optimizer.Adam( learning_rate=0.01, parameters=linear.parameters() ) out = linear(a) out.backward() adam.step() adam.clear_gradients() paddle.enable_static() def test_adam_op_with_state_dict(self): paddle.disable_static() emb = paddle.nn.Embedding(10, 10) adam = paddle.optimizer.Adam(0.001, parameters=emb.parameters()) state_dict = adam.state_dict() adam.set_state_dict(state_dict) # learning_rate is LRScheduler learning_rate = paddle.optimizer.lr.CosineAnnealingDecay( learning_rate=0.1, T_max=10 ) adam = paddle.optimizer.Adam( learning_rate=learning_rate, weight_decay=fluid.regularizer.L2Decay(0.001), parameters=emb.parameters(), ) lr = adam.get_lr() state_dict = adam.state_dict() adam.set_state_dict(state_dict) # leanrning_rate is Tensor with self.assertRaises(TypeError): learning_rate = np.array([0.01]).astype("float32") learning_rate = paddle.to_tensor(learning_rate) adam = paddle.optimizer.Adam( learning_rate=learning_rate, parameters=emb.parameters() ) params = adam.get_opti_var_name_list() assert params is not None paddle.enable_static() def test_adam_with_grad_clip(self): paddle.disable_static() value = np.arange(26).reshape(2, 13).astype("float32") a = fluid.dygraph.to_variable(value) linear = paddle.nn.Linear(13, 5) clip = fluid.clip.GradientClipByGlobalNorm(clip_norm=1.0) adam = paddle.optimizer.Adam( 0.1, parameters=linear.parameters(), grad_clip=clip ) out = linear(a) out.backward() adam.step() adam.clear_gradients() paddle.enable_static() def test_adam_op_with_set_lr(self): paddle.disable_static() linear = paddle.nn.Linear(10, 10) adam = paddle.optimizer.Adam(0.1, parameters=linear.parameters()) lr = 0.01 adam.set_lr(lr) cur_lr = adam.get_lr() assert lr == cur_lr with self.assertRaises(TypeError): lr_var = paddle.fluid.layers.create_global_var( shape=[1], value=lr, dtype='float32' ) adam.set_lr(lr_var) paddle.enable_static() def test_adam_op_invalid_input(self): paddle.disable_static() linear = paddle.nn.Linear(10, 10) with self.assertRaises(ValueError): adam = paddle.optimizer.Adam( 0.1, beta1=-1, parameters=linear.parameters() ) with self.assertRaises(ValueError): adam = paddle.optimizer.Adam( 0.1, beta2=-1, parameters=linear.parameters() ) with self.assertRaises(ValueError): adam = paddle.optimizer.Adam( 0.1, epsilon=-1, parameters=linear.parameters() ) paddle.enable_static() def test_adam_op_with_sparse_input_and_weight_decay(self): paddle.disable_static() x_data = np.arange(0, 10).reshape((10, 1)).astype(np.int64) x = paddle.to_tensor(x_data, stop_gradient=False) emb = paddle.nn.Embedding(10, 10, sparse=True) adam = paddle.optimizer.Adam( 0.001, parameters=emb.parameters(), weight_decay=0.01 ) with self.assertRaises(RuntimeError): out = emb(x) out.backward() adam.step() paddle.enable_static() def test_api_eager_dygraph(self): with _test_eager_guard(): self.test_adam_op_dygraph() self.test_adam_op_with_state_dict() self.test_adam_with_grad_clip() self.test_adam_op_with_set_lr() self.test_adam_op_with_sparse_input_and_weight_decay() class TestAdamOptimizer(unittest.TestCase): def _test( self, place, use_tensor=True, use_fluid_api=True, use_global_beta_pow=False, flatten_param_grads=False, ): paddle.enable_static() main_prog = paddle.static.Program() startup_prog = paddle.static.Program() SEED = 2021 paddle.seed(SEED) np.random.seed(SEED) a_np = np.random.random(size=(2, 2)).astype('float32') b_np = np.random.random(size=(2, 2)).astype('float32') label_np = np.random.randint(2, size=(2, 1)).astype('int64') weight_attr1 = paddle.ParamAttr( name="weight1", initializer=fluid.initializer.Constant(value=1.0), trainable=True, ) weight_attr2 = paddle.ParamAttr( name="weight2", initializer=fluid.initializer.Constant(value=2.0), trainable=True, ) clip = paddle.nn.ClipGradByGlobalNorm(clip_norm=1.0) with paddle.static.program_guard(main_prog, startup_prog): with paddle.utils.unique_name.guard(): a = paddle.static.data(name="a", shape=[2, 2], dtype='float32') b = paddle.static.data(name="b", shape=[2, 2], dtype='float32') label = paddle.static.data( name="label", shape=[2, 1], dtype='int64' ) sum = paddle.add(a, b) z = paddle.pow(sum, 2.0) fc_1 = fluid.layers.fc(input=z, size=2, param_attr=weight_attr1) prediction = fluid.layers.fc( input=fc_1, size=2, param_attr=weight_attr2, act='softmax' ) cost = fluid.layers.cross_entropy(input=prediction, label=label) loss = fluid.layers.reduce_mean(cost) beta1_init = 0.9 beta2_init = 0.999 epsilon_init = 1e-8 if use_tensor: beta1 = fluid.layers.create_global_var( shape=[1], value=float(beta1_init), dtype='float32', persistable=True, name="beta1", ) beta2 = fluid.layers.create_global_var( shape=[1], value=float(beta2_init), dtype='float32', persistable=True, name="beta2", ) epsilon = fluid.layers.create_global_var( shape=[1], value=float(epsilon_init), dtype='float32', persistable=True, name="epsilon", ) if use_fluid_api: adam = fluid.optimizer.Adam( learning_rate=0.01, beta1=beta1, beta2=beta2, epsilon=epsilon, use_global_beta_pow=use_global_beta_pow, flatten_param_grads=flatten_param_grads, align_size=256, grad_clip=clip, ) else: adam = paddle.optimizer.Adam( learning_rate=0.01, beta1=beta1, beta2=beta2, epsilon=epsilon, grad_clip=clip, ) else: if use_fluid_api: adam = fluid.optimizer.Adam( learning_rate=0.01, beta1=beta1_init, beta2=beta2_init, epsilon=epsilon_init, use_global_beta_pow=use_global_beta_pow, flatten_param_grads=flatten_param_grads, align_size=256, grad_clip=clip, ) else: adam = fluid.optimizer.Adam( learning_rate=0.01, beta1=beta1_init, beta2=beta2_init, epsilon=epsilon_init, grad_clip=clip, ) adam.minimize(loss) scope = fluid.Scope() with fluid.scope_guard(scope): exe = paddle.static.Executor(place) exe.run(startup_prog) print("Start run on {}".format(place)) for epoch in range(10): pred_res, loss_res = exe.run( main_prog, feed={"a": a_np, "b": b_np, "label": label_np}, fetch_list=[prediction, loss], ) print( "Epoch {} | Prediction[0]: {}, Loss: {}".format( epoch, pred_res[0], loss_res ) ) paddle.disable_static() return pred_res, loss_res def _test_with_place(self, place): preds = [] losses = [] for use_tensor in [True, False]: for use_fluid_api in [True, False]: for use_global_beta_pow in [True, False]: for flatten_param_grads in [True, False]: pred, loss = self._test( place, use_tensor, use_fluid_api, use_global_beta_pow, flatten_param_grads, ) preds.append(pred) losses.append(loss) for pred in preds: np.testing.assert_allclose(pred, preds[0], rtol=1e-05) for loss in losses: np.testing.assert_allclose(loss, losses[0], rtol=1e-05) def test_adam_api(self): # NOTE(zhiqiu): cpu and gpu has different seed, so should compare separatly. self._test_with_place(paddle.CPUPlace()) if core.is_compiled_with_cuda(): self._test_with_place(paddle.CUDAPlace(0)) def test_adam_flatten_param_grads_with_regularizer(self): # flatten_param_grads + regularizer is not supported yet. paddle.enable_static() main = fluid.Program() weight_attr = paddle.ParamAttr( name="weight1", initializer=fluid.initializer.Constant(value=1.0), regularizer=fluid.regularizer.L1DecayRegularizer( regularization_coeff=0.1 ), trainable=True, ) with fluid.program_guard(main): x = fluid.data(name='x', shape=[None, 13], dtype='float32') y = fluid.data(name='y', shape=[None, 1], dtype='float32') y_predict = fluid.layers.fc( input=x, size=1, act=None, param_attr=weight_attr ) cost = fluid.layers.square_error_cost(input=y_predict, label=y) avg_cost = paddle.mean(cost) adam = fluid.optimizer.AdamOptimizer( 0.01, flatten_param_grads=True, align_size=256 ) adam.minimize(avg_cost) paddle.disable_static() self.assertEqual(adam._flatten_param_grads, False) def test_adam_exception(self): paddle.enable_static() a = paddle.static.data(name="a", shape=[32, 32], dtype='float32') b = paddle.static.data(name="b", shape=[32, 32], dtype='float32') label = paddle.static.data(name="label", shape=[32, 1], dtype='int64') sum = paddle.add(a, b) z = paddle.pow(sum, 2.0) fc_1 = fluid.layers.fc(input=z, size=128) prediction = fluid.layers.fc(input=fc_1, size=2, act='softmax') cost = fluid.layers.cross_entropy(input=prediction, label=label) loss = fluid.layers.reduce_mean(cost) adam = fluid.optimizer.Adam(use_global_beta_pow=True) adam.minimize(loss) self.assertRaises(Exception, adam._get_global_accumulator, 'tmp') adam._add_global_accumulator( 'tmp', type=core.VarDesc.VarType.LOD_TENSOR ) adam._get_global_accumulator('tmp') self.assertRaises( Exception, adam._add_global_accumulator, adam._beta1_pow_acc_str, type=core.VarDesc.VarType.LOD_TENSOR, ) paddle.disable_static() def test_adam_save_load(self): paddle.disable_static() a = paddle.rand([4, 10]) linear = paddle.nn.Linear(10, 10) b = linear(a) state_dict = linear.state_dict() fluid.save_dygraph(state_dict, "paddle_dy") scheduler = paddle.optimizer.lr.NoamDecay( d_model=0.01, warmup_steps=100, verbose=True ) adam = paddle.fluid.optimizer.Adam( learning_rate=scheduler, parameter_list=linear.parameters(), use_global_beta_pow=True, ) adam.minimize(b) state_dict = adam.state_dict() fluid.save_dygraph(state_dict, "paddle_dy") para_state_dict, opt_state_dict = fluid.load_dygraph("paddle_dy") adam.set_state_dict(opt_state_dict) paddle.enable_static() def test_adam_save_load_error(self): paddle.disable_static() def get_opt(dtype, shape): with paddle.utils.unique_name.guard(): paddle.set_default_dtype(dtype) a = paddle.rand([4, 10]) linear = paddle.nn.Linear(10, 10) b = linear(a) state_dict = linear.state_dict() fluid.save_dygraph(state_dict, "paddle_dy") scheduler = paddle.optimizer.lr.NoamDecay( d_model=0.01, warmup_steps=100, verbose=True ) adam = paddle.fluid.optimizer.Adam( learning_rate=scheduler, parameter_list=linear.parameters(), use_global_beta_pow=True, ) adam.minimize(b) return adam adam = get_opt('float32', [10, 10]) state_dict = adam.state_dict() fluid.save_dygraph(state_dict, "paddle_dy") para_state_dict, opt_state_dict = fluid.load_dygraph("paddle_dy") adam.set_state_dict(opt_state_dict) adam2 = get_opt('float64', [10, 10]) # dtype not match self.assertRaises(AssertionError, adam2.set_state_dict, opt_state_dict) adam3 = get_opt('float32', [10, 10]) # shape not match opt_state_dict['beta1_pow_acc_0'] = np.array( [0.9, 0.9], dtype='float32' ) self.assertRaises(AssertionError, adam3.set_state_dict, opt_state_dict) paddle.enable_static() class TestAdamOpV2Group(TestAdamOpV2): def test_adam_op(self): paddle.disable_static() value = np.arange(26).reshape(2, 13).astype("float32") a = paddle.to_tensor(value) linear_1 = paddle.nn.Linear(13, 5) linear_2 = paddle.nn.Linear(5, 3) # This can be any optimizer supported by dygraph. adam = paddle.optimizer.Adam( learning_rate=0.01, parameters=[ {'params': linear_1.parameters()}, { 'params': linear_2.parameters(), 'weight_decay': 0.001, 'beta1': 0.1, 'beta2': 0.99, }, ], weight_decay=0.1, ) out = linear_1(a) out = linear_2(out) out.backward() adam.step() adam.clear_gradients() class TestMultiTensorAdam(unittest.TestCase): def _adam_optimize_dygraph( self, place, use_param_attr=False, use_param_group=False, use_amp=False, use_multi_tensor=False, ): paddle.disable_static() paddle.seed(10) paddle.set_device(place) input = paddle.randn((5, 5)) weight_attr = paddle.ParamAttr( learning_rate=0.5, regularizer=paddle.regularizer.L2Decay(1.0), trainable=True, ) if use_param_attr: model = paddle.nn.Linear(5, 5, weight_attr=weight_attr) else: model = paddle.nn.Linear(5, 5) if not use_param_group: optimizer = paddle.optimizer.Adam( parameters=model.parameters(), use_multi_tensor=use_multi_tensor, multi_precision=use_amp, ) else: parameters = list(model.parameters()) param_num = len(parameters) optimizer = paddle.optimizer.Adam( parameters=[ { 'params': parameters[: int(param_num / 2)], 'weight_decay': 0.001, 'beta1': 0.1, 'beta2': 0.99, }, { 'params': parameters[int(param_num / 2) :], 'weight_decay': 0.001, 'beta1': 0.1, 'beta2': 0.99, }, ], use_multi_tensor=use_multi_tensor, multi_precision=use_amp, ) for idx in range(2): if place == 'gpu' and use_amp: model = paddle.amp.decorate(models=model, level='O2') scaler = paddle.amp.GradScaler(init_loss_scaling=1024) if place == 'gpu' and use_amp: with paddle.amp.auto_cast(level='O2'): output = model(input) loss = paddle.mean(output) scaled = scaler.scale(loss) scaled.backward() scaler.step(optimizer) optimizer.clear_grad() else: output = model(input) loss = paddle.mean(output) loss.backward() optimizer.step() optimizer.clear_grad() return output, model.parameters() def _adam_optimize_static( self, place, use_amp=False, use_multi_tensor=False ): paddle.enable_static() paddle.seed(10) np.random.seed(10) if place == 'cpu': use_amp = False exe = paddle.static.Executor(place=place) train_program = paddle.static.Program() startup_program = paddle.static.Program() optimizer = paddle.optimizer.Adam( multi_precision=use_amp, use_multi_tensor=use_multi_tensor ) if use_amp: optimizer = paddle.static.amp.decorate( optimizer, init_loss_scaling=128.0, use_dynamic_loss_scaling=True, use_pure_fp16=True, use_fp16_guard=False, ) with paddle.static.program_guard(train_program, startup_program): if use_amp: data = paddle.static.data( shape=[2, 2], name='X', dtype='float16' ) else: data = paddle.static.data( shape=[2, 2], name='X', dtype='float32' ) hidden = paddle.static.nn.fc(x=data, size=10) loss = paddle.mean(hidden) optimizer.minimize(loss) exe.run(startup_program) if use_amp: optimizer.amp_init(place=place, scope=paddle.static.global_scope()) x = np.random.random(size=(2, 2)).astype('float16') else: x = np.random.random(size=(2, 2)).astype('float32') out = [] for idx in range(5): (loss_data,) = exe.run( train_program, feed={"X": x}, fetch_list=[loss.name] ) out.append(loss_data) return out def _get_places(self): places = ['cpu'] if paddle.is_compiled_with_cuda(): places.append('gpu') return places def _check_with_place_amp(self, place, use_amp): # test dygraph mode output_dygraph1, params_dygraph1 = self._adam_optimize_dygraph( place=place, use_amp=use_amp, use_multi_tensor=True ) output_dygraph2, params_dygraph2 = self._adam_optimize_dygraph( place=place, use_amp=use_amp, use_multi_tensor=False ) np.testing.assert_allclose(output_dygraph1, output_dygraph2, rtol=1e-05) for idx in range(len(params_dygraph1)): np.testing.assert_allclose( params_dygraph1[idx], params_dygraph2[idx], rtol=1e-05 ) # test static mode output_static1 = self._adam_optimize_static( place=place, use_amp=use_amp, use_multi_tensor=True ) output_static2 = self._adam_optimize_static( place=place, use_amp=use_amp, use_multi_tensor=False ) for idx in range(len(output_static1)): np.testing.assert_allclose( output_static1[idx], output_static2[idx], rtol=1e-05 ) def _check_with_param_arrt(self, place, use_amp): output1, params1 = self._adam_optimize_dygraph( place=place, use_amp=use_amp, use_param_attr=True, use_multi_tensor=True, ) output2, params2 = self._adam_optimize_dygraph( place=place, use_amp=use_amp, use_param_attr=True, use_multi_tensor=False, ) np.testing.assert_allclose(output1, output2, rtol=1e-05) for idx in range(len(params1)): np.testing.assert_allclose(params1[idx], params2[idx], rtol=1e-05) def _check_with_param_group(self, place, use_amp): output1, params1 = self._adam_optimize_dygraph( place=place, use_amp=use_amp, use_param_group=True, use_multi_tensor=True, ) output2, params2 = self._adam_optimize_dygraph( place=place, use_amp=use_amp, use_param_group=True, use_multi_tensor=False, ) np.testing.assert_allclose(output1, output2, rtol=1e-05) for idx in range(len(params1)): np.testing.assert_allclose(params1[idx], params2[idx], rtol=1e-05) def test_main(self): for place in self._get_places(): use_amp_list = [True, False] for use_amp in use_amp_list: self._check_with_place_amp(place, use_amp) self._check_with_param_arrt(place, use_amp) self._check_with_param_group(place, use_amp) def test_api_eager_dygraph(self): with _test_eager_guard(): self.test_main() if __name__ == "__main__": paddle.enable_static() unittest.main()