# 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 import numpy as np from op_test import OpTest import paddle import paddle.fluid as fluid import paddle.fluid.core as core from paddle.fluid.op import Operator def calculate_momentum_by_numpy( param, grad, mu, velocity, use_nesterov, learning_rate, regularization_method=None, regularization_coeff=1.0, ): if regularization_method == "l2_decay": grad = grad + regularization_coeff * param velocity_out = mu * velocity + grad if use_nesterov: param_out = param - (grad + velocity_out * mu) * learning_rate else: param_out = param - learning_rate * velocity_out else: velocity_out = mu * velocity + grad if use_nesterov: param_out = ( param - grad * learning_rate - velocity_out * mu * learning_rate ) else: param_out = param - learning_rate * velocity_out return param_out, velocity_out class TestMomentumOp1(OpTest): def setUp(self): self.op_type = "momentum" self.dtype = np.float32 self.init_dtype() param = np.random.random((123, 321)).astype(self.dtype) grad = np.random.random((123, 321)).astype(self.dtype) velocity = np.zeros((123, 321)).astype(self.dtype) learning_rate = np.array([0.001]).astype(np.float32) mu = 0.0001 use_nesterov = False self.inputs = { 'Param': param, 'Grad': grad, 'Velocity': velocity, 'LearningRate': learning_rate, } self.attrs = {'mu': mu} param_out, velocity_out = calculate_momentum_by_numpy( param=param, grad=grad, mu=mu, velocity=velocity, use_nesterov=use_nesterov, learning_rate=learning_rate, ) self.outputs = {'ParamOut': param_out, 'VelocityOut': velocity_out} def init_dtype(self): pass def test_check_output(self): self.check_output() class TestMomentumOpFp16(TestMomentumOp1): def init_dtype(self): self.dtype = np.float16 def test_check_output(self): self.check_output(atol=1e-3) class TestMomentumOp2(OpTest): '''Test Momentum with default values for attributes''' def setUp(self): self.op_type = "momentum" param = np.random.random((123, 321)).astype("float32") grad = np.random.random((123, 321)).astype("float32") velocity = np.zeros((123, 321)).astype("float32") learning_rate = np.array([0.001]).astype("float32") mu = 0.0001 use_nesterov = True self.inputs = { 'Param': param, 'Grad': grad, 'Velocity': velocity, 'LearningRate': learning_rate, } self.attrs = {'mu': mu, 'use_nesterov': use_nesterov} param_out, velocity_out = calculate_momentum_by_numpy( param=param, grad=grad, mu=mu, velocity=velocity, use_nesterov=use_nesterov, learning_rate=learning_rate, ) self.outputs = {'ParamOut': param_out, 'VelocityOut': velocity_out} def test_check_output(self): self.check_output() @unittest.skipIf( not core.is_compiled_with_cuda(), "core is not compiled with CUDA" ) class TestLarsMomentumOpWithMP(OpTest): def setUp(self): self.config() self.op_type = "lars_momentum" mu = 0.0001 lars_coeff = 0.001 lars_weight_decay = 0.0005 rescale_grad = 1.0 params = [] grads = [] velocitys = [] learning_rates = [] master_params = [] param_outs = [] velocity_outs = [] master_param_outs = [] for i in range(self.params_num): master_param = np.random.random((123, 321)).astype("float32") param = master_param.astype("float16") grad = np.random.random((123, 321)).astype("float16") velocity = np.zeros((123, 321)).astype("float32") learning_rate = np.array([0.001]).astype("float32") fp32_grad = grad.astype("float32") pnorm = np.sqrt(np.square(master_param).sum()) gnorm = np.sqrt(np.square(fp32_grad).sum()) local_lr = ( learning_rate * lars_coeff * pnorm / (gnorm + lars_weight_decay * pnorm) ) fp32_grad = fp32_grad * rescale_grad velocity_out = mu * velocity + local_lr * ( fp32_grad + lars_weight_decay * master_param ) p_new = master_param - velocity_out param_out = p_new.astype("float16") master_param_out = p_new params.append(("SubParam_" + str(i), param)) grads.append(("SubGrad_" + str(i), grad)) velocitys.append(("SubVelocity_" + str(i), velocity)) learning_rates.append(("SubLearning_rate_" + str(i), learning_rate)) velocity_outs.append(("SubVelocity_out_" + str(i), velocity_out)) param_outs.append(("SubParam_out_" + str(i), param_out)) master_params.append(("SubMasterParam_" + str(i), master_param)) master_param_outs.append( ("SubMasterParamOut_" + str(i), master_param_out) ) self.inputs = { 'Param': params, 'Grad': grads, 'Velocity': velocitys, 'LearningRate': learning_rates, 'MasterParam': master_params, } self.attrs = { 'mu': mu, 'lars_coeff': lars_coeff, 'lars_weight_decay': [lars_weight_decay], 'multi_precision': True, 'rescale_grad': rescale_grad, } self.outputs = { 'ParamOut': param_outs, 'VelocityOut': velocity_outs, 'MasterParamOut': master_param_outs, } def test_check_output(self): paddle.enable_static() if core.is_compiled_with_cuda(): place = fluid.CUDAPlace(0) if core.is_float16_supported(place): self.check_output_with_place(place) def config(self): self.params_num = 1 class TestLarsMomentumOp(OpTest): def setUp(self): self.config() self.op_type = "lars_momentum" mu = 0.0001 lars_coeff = 0.001 lars_weight_decay = 0.0005 params = [] grads = [] velocitys = [] param_outs = [] velocity_outs = [] learning_rates = [] for i in range(self.params_num): param = np.random.random((123, 321)).astype("float32") grad = np.random.random((123, 321)).astype("float32") velocity = np.zeros((123, 321)).astype("float32") learning_rate = np.array([0.001]).astype("float32") pnorm = np.sqrt(np.square(param).sum()) gnorm = np.sqrt(np.square(grad).sum()) local_lr = ( learning_rate * lars_coeff * pnorm / (gnorm + lars_weight_decay * param) ) velocity_out = mu * velocity + local_lr * ( grad + lars_weight_decay * param ) param_out = param - velocity_out params.append(("SubParam_" + str(i), param)) grads.append(("SubGrad_" + str(i), grad)) velocitys.append(("SubVelocity_" + str(i), velocity)) learning_rates.append(("SubLearning_rate_" + str(i), learning_rate)) velocity_outs.append(("SubVelocity_out_" + str(i), velocity_out)) param_outs.append(("SubParam_out_" + str(i), param_out)) self.inputs = { 'Param': params, 'Grad': grads, 'Velocity': velocitys, 'LearningRate': learning_rates, } self.attrs = { 'mu': mu, 'lars_coeff': lars_coeff, 'lars_weight_decay': [lars_weight_decay], } self.outputs = {'ParamOut': param_outs, 'VelocityOut': velocity_outs} def test_check_output(self): paddle.enable_static() self.check_output() def config(self): self.params_num = 1 class TestSparseMomentumOp(unittest.TestCase): def setUp(self): self.use_nesterov = False self.regularization_method = "" self.regularization_coeff = 1.0 def check_with_place(self, place): self.init_kernel() scope = core.Scope() # create and initialize Grad Variable height = 10 rows = [0, 4, 7] row_numel = 12 mu = 1.0 use_nesterov = self.use_nesterov regularization_method = self.regularization_method regularization_coeff = self.regularization_coeff # create and initialize Param Variable param = scope.var('Param').get_tensor() param_array = np.full((height, row_numel), 5.0).astype("float32") param.set(param_array, place) param_out = scope.var("ParamOut").get_tensor() param_out_array = np.full((height, row_numel), 0.0).astype("float32") param_out.set(param_out_array, place) grad_selected_rows = scope.var('Grad').get_selected_rows() grad_selected_rows.set_height(height) grad_selected_rows.set_rows(rows) grad_np_array = np.ones((len(rows), row_numel)).astype("float32") grad_np_array[0, 0] = 2.0 grad_np_array[2, 8] = 4.0 grad_tensor = grad_selected_rows.get_tensor() grad_tensor.set(grad_np_array, place) velocity = scope.var('Velocity').get_tensor() velocity_np_array = np.ones((height, row_numel)).astype("float32") velocity.set(velocity_np_array, place) velocity_out = scope.var('VelocityOut').get_tensor() velocity_out_np_array = np.full((height, row_numel), 0.0).astype( "float32" ) velocity_out.set(velocity_out_np_array, place) # create and initialize LearningRate Variable lr = scope.var('LearningRate').get_tensor() lr_array = np.full((1), 2.0).astype("float32") lr.set(lr_array, place) # create and run operator op = Operator( "momentum", Param='Param', Grad='Grad', Velocity='Velocity', ParamOut='ParamOut', VelocityOut='VelocityOut', LearningRate='LearningRate', mu=mu, use_nesterov=use_nesterov, regularization_method=regularization_method, regularization_coeff=regularization_coeff, ) op.run(scope, place) # get and compare result param_out_np_array = np.array(param_out) velocity_out_np_array = np.array(velocity_out) # TODO(dzh): add a more suitable general numpy interface # for sparse update. _grad_np_array = np.full((height, row_numel), 0.0).astype("float32") for i in range(len(rows)): _grad_np_array[rows[i]] = grad_np_array[i] _param = param_array _param_out, _velocity_out = calculate_momentum_by_numpy( param=_param, grad=_grad_np_array, mu=mu, velocity=velocity_np_array, use_nesterov=use_nesterov, learning_rate=lr_array, regularization_method=regularization_method, regularization_coeff=regularization_coeff, ) self.assertTrue((_velocity_out == velocity_out_np_array).all()) self.assertTrue((_param_out == param_out_np_array).all()) def init_kernel(self): pass def test_sparse_momentum(self): places = [core.CPUPlace()] if core.is_compiled_with_cuda(): places.append(core.CUDAPlace(0)) for place in places: self.check_with_place(place) class TestSparseMomentumOp2(TestSparseMomentumOp): def init_kernel(self): self.use_nesterov = True class TestSparseMomentumOpWithMultiPrecision(unittest.TestCase): def setUp(self): self.init_args() self.regularization_method = "" self.regularization_coeff = 1.0 def check_with_place(self, place): scope = core.Scope() # create and initialize Grad Variable height = 10 rows = [0, 4, 7] row_numel = 12 mu = 1.0 use_nesterov = self.use_nesterov regularization_method = self.regularization_method regularization_coeff = self.regularization_coeff # create and initialize Param Variable param_array = np.full((height, row_numel), 5.0).astype("float32") param_out_array = np.full((height, row_numel), 0.0).astype("float32") param = scope.var('Param').get_tensor() param.set(param_array.astype("float16"), place) param_out = scope.var("ParamOut").get_tensor() param_out.set(param_out_array.astype("float16"), place) master_param = scope.var('MasterParam').get_tensor() master_param.set(param_array, place) master_param_out = scope.var("MasterParamOut").get_tensor() master_param_out.set(param_out_array, place) grad_selected_rows = scope.var('Grad').get_selected_rows() grad_selected_rows.set_height(height) grad_selected_rows.set_rows(rows) grad_np_array = np.ones((len(rows), row_numel)).astype("float32") grad_np_array[0, 0] = 2.0 grad_np_array[2, 8] = 4.0 grad_tensor = grad_selected_rows.get_tensor() grad_tensor.set(grad_np_array.astype("float16"), place) velocity = scope.var('Velocity').get_tensor() velocity_np_array = np.ones((height, row_numel)).astype("float32") velocity.set(velocity_np_array, place) velocity_out = scope.var('VelocityOut').get_tensor() velocity_out_np_array = np.full((height, row_numel), 0.0).astype( "float32" ) velocity_out.set(velocity_out_np_array, place) # create and initialize LearningRate Variable lr = scope.var('LearningRate').get_tensor() lr_array = np.full((1), 2.0).astype("float32") lr.set(lr_array, place) # create and run operator op = Operator( "momentum", Param='Param', Grad='Grad', Velocity='Velocity', MasterParam='MasterParam', ParamOut='ParamOut', VelocityOut='VelocityOut', MasterParamOut='MasterParamOut', LearningRate='LearningRate', mu=mu, use_nesterov=use_nesterov, regularization_method=regularization_method, regularization_coeff=regularization_coeff, multi_precision=True, rescale_grad=1.0, ) op.run(scope, place) # get and compare result param_out_np_array = np.array(param_out) velocity_out_np_array = np.array(velocity_out) _grad_np_array = np.full((height, row_numel), 0.0).astype("float32") for i in range(len(rows)): _grad_np_array[rows[i]] = grad_np_array[i] _param = param_array _param_out, _velocity_out = calculate_momentum_by_numpy( param=_param, grad=_grad_np_array, mu=mu, velocity=velocity_np_array, use_nesterov=use_nesterov, learning_rate=lr_array, regularization_method=regularization_method, regularization_coeff=regularization_coeff, ) self.assertTrue((_velocity_out == velocity_out_np_array).all()) self.assertTrue((_param_out == param_out_np_array).all()) def init_args(self): self.use_nesterov = False def test_sparse_momentum(self): if core.is_compiled_with_cuda(): self.check_with_place(fluid.CUDAPlace(0)) class TestSparseMomentumOpWithMultiPrecision2( TestSparseMomentumOpWithMultiPrecision ): def init_args(self): self.use_nesterov = True class TestMomentumV2(unittest.TestCase): def test_momentum_dygraph(self): paddle.disable_static() value = np.arange(26).reshape(2, 13).astype("float32") a = paddle.to_tensor(value) linear = paddle.nn.Linear(13, 5) # This can be any optimizer supported by dygraph. adam = paddle.optimizer.Momentum( learning_rate=0.01, momentum=0.9, parameters=linear.parameters() ) out = linear(a) out.backward() adam.step() adam.clear_gradients() def test_momentum(self): paddle.enable_static() place = fluid.CPUPlace() main = fluid.Program() with fluid.program_guard(main): x = fluid.layers.data(name='x', shape=[13], dtype='float32') y = fluid.layers.data(name='y', shape=[1], dtype='float32') y_predict = fluid.layers.fc(input=x, size=1, act=None) cost = paddle.nn.functional.square_error_cost( input=y_predict, label=y ) avg_cost = paddle.mean(cost) rms_optimizer = paddle.optimizer.Momentum( learning_rate=0.1, momentum=0.9 ) rms_optimizer.minimize(avg_cost) fetch_list = [avg_cost] train_reader = paddle.batch( paddle.dataset.uci_housing.train(), batch_size=1 ) feeder = fluid.DataFeeder(place=place, feed_list=[x, y]) exe = fluid.Executor(place) exe.run(fluid.default_startup_program()) for data in train_reader(): exe.run(main, feed=feeder.feed(data), fetch_list=fetch_list) def test_raise_error(self): self.assertRaises( ValueError, paddle.optimizer.Momentum, learning_rate=None ) self.assertRaises(ValueError, paddle.optimizer.Momentum, momentum=None) class TestMomentumOpWithDecay(OpTest): def setUp(self): self.op_type = "momentum" self.dtype = np.float32 self.use_nesterov = True self.regularization_method = 'l2_decay' self.regularization_coeff = 0.9 self.init_config() param = np.random.random((123, 321)).astype(self.dtype) grad = np.random.random((123, 321)).astype(self.dtype) velocity = np.zeros((123, 321)).astype(self.dtype) learning_rate = np.array([0.001]).astype(np.float32) mu = 0.0001 use_nesterov = self.use_nesterov regularization_method = self.regularization_method regularization_coeff = self.regularization_coeff self.inputs = { 'Param': param, 'Grad': grad, 'Velocity': velocity, 'LearningRate': learning_rate, } self.attrs = { 'mu': mu, 'use_nesterov': use_nesterov, 'regularization_method': regularization_method, 'regularization_coeff': regularization_coeff, } grad = grad + regularization_coeff * param param_out, velocity_out = calculate_momentum_by_numpy( param=param, grad=grad, mu=mu, velocity=velocity, use_nesterov=use_nesterov, learning_rate=learning_rate, ) self.outputs = {'ParamOut': param_out, 'VelocityOut': velocity_out} def init_config(self): pass def test_check_output(self): paddle.enable_static() self.check_output() class TestMomentumOpWithDecayFP16(TestMomentumOpWithDecay): def init_config(self): self.dtype = np.float16 def test_check_output(self): paddle.enable_static() self.check_output(atol=1e-3) class TestMomentumOpWithDecay2(TestMomentumOpWithDecay): def init_config(self): self.use_nesterov = False class TestSparseMomentumOpWithDecay(TestSparseMomentumOp): def setUp(self): self.use_nesterov = False self.regularization_method = 'l2_decay' self.regularization_coeff = 0.9 class TestSparseMomentumOpWithDecay2(TestSparseMomentumOpWithDecay): def init_kernel(self): self.use_nesterov = True class TestMomentumOpWithDecayAPI(unittest.TestCase): def _test_momentum_dygraph_common(self, regularization): paddle.disable_static() inp = np.random.uniform(-0.1, 0.1, [10, 10]).astype("float32") linear = paddle.nn.Linear(10, 10) inp = paddle.to_tensor(inp) out = linear(inp) loss = paddle.mean(out) # This can be any optimizer supported by dygraph. momentum = paddle.fluid.contrib.optimizer.Momentum( learning_rate=0.01, momentum=0.9, parameter_list=linear.parameters(), regularization=regularization, ) momentum.minimize(loss) def test_momentum_dygraph_1(self): self._test_momentum_dygraph_common( regularization=paddle.fluid.regularizer.L2Decay( regularization_coeff=0.1 ) ) def test_momentum_static(self): paddle.enable_static() place = fluid.CPUPlace() main = fluid.Program() with fluid.program_guard(main): x = fluid.layers.data(name='x', shape=[13], dtype='float32') y = fluid.layers.data(name='y', shape=[1], dtype='float32') y_predict = fluid.layers.fc(input=x, size=1, act=None) cost = paddle.nn.functional.square_error_cost( input=y_predict, label=y ) avg_cost = paddle.mean(cost) momentum_optimizer = paddle.fluid.contrib.optimizer.Momentum( learning_rate=0.1, momentum=0.9 ) momentum_optimizer.minimize(avg_cost) fetch_list = [avg_cost] train_reader = paddle.batch( paddle.dataset.uci_housing.train(), batch_size=1 ) feeder = fluid.DataFeeder(place=place, feed_list=[x, y]) exe = fluid.Executor(place) exe.run(fluid.default_startup_program()) for data in train_reader(): exe.run(main, feed=feeder.feed(data), fetch_list=fetch_list) class TestFusedMomentumWithDecayAPI(unittest.TestCase): def get_program(self, weight_attr, bias_attr=False): main_program = paddle.static.Program() startup_program = paddle.static.Program() with paddle.static.program_guard( main_program=main_program, startup_program=startup_program ): x = paddle.static.data(name='x', shape=[10, 10]) linear = paddle.nn.Linear( 10, 10, weight_attr=weight_attr, bias_attr=bias_attr ) out = linear(x) loss = paddle.mean(out) optimizer = paddle.optimizer.Momentum( learning_rate=0.01, momentum=0.9, weight_decay=paddle.regularizer.L2Decay(0.5), ) optimizer.minimize(loss) return main_program def test_param_has_l2decay(self): paddle.enable_static() weight_attr = paddle.ParamAttr( name="weight", initializer=paddle.nn.initializer.Constant(value=0.5), regularizer=paddle.regularizer.L2Decay(0.1), ) program = self.get_program(weight_attr, bias_attr=False) ops = program.global_block().ops self.assertEqual(ops[-1].attr('regularization_method'), 'l2_decay') self.assertEqual(ops[-1].attr('regularization_coeff'), np.float32(0.1)) for i in range(len(ops)): self.assertTrue('sum' not in ops[i].type) self.assertTrue('scale' not in ops[i].type) def test_param_has_l1decay(self): paddle.enable_static() weight_attr = paddle.ParamAttr( name="weight", initializer=paddle.nn.initializer.Constant(value=0.5), regularizer=paddle.regularizer.L1Decay(0.1), ) bias_attr = paddle.ParamAttr( name="bias", initializer=paddle.nn.initializer.Constant(value=0.0), regularizer=None, ) program = self.get_program(weight_attr, bias_attr) ops = program.global_block().ops self.assertEqual(ops[-1].type, 'momentum') self.assertEqual(ops[-2].type, 'momentum') self.assertEqual(ops[-3].type, 'sum') self.assertEqual(ops[-4].type, 'scale') self.assertEqual(ops[-5].type, 'sign') self.assertEqual(ops[-6].type, 'matmul_v2_grad') if 'weight' in ops[-1].input('Param'): self.assertEqual(ops[-1].attr('regularization_method'), '') self.assertEqual(ops[-1].attr('regularization_coeff'), 0) if 'bias' in ops[-2].input('Param'): self.assertEqual(ops[-2].attr('regularization_method'), 'l2_decay') self.assertEqual( ops[-2].attr('regularization_coeff'), np.float32(0.5) ) def test_param_has_no_regularizer(self): paddle.enable_static() program = self.get_program(weight_attr=None) ops = program.global_block().ops self.assertEqual(ops[-1].attr('regularization_method'), 'l2_decay') self.assertEqual(ops[-1].attr('regularization_coeff'), np.float32(0.5)) for i in range(len(ops)): self.assertTrue('sum' not in ops[i].type) self.assertTrue('scale' not in ops[i].type) class TestMomentumOpVsMomentumOpWithDecayAPI(unittest.TestCase): def __update_params(self, momentum, linear): for i in range(10): inp = paddle.full( shape=[2, 2], fill_value=i, dtype='float32' ).astype("float32") inp = paddle.to_tensor(inp) out = linear(inp) loss = paddle.mean(out) loss.backward() momentum.minimize(loss) linear.clear_gradients() def __test_vs(self, place=fluid.CPUPlace()): paddle.disable_static(place=place) linear_old = paddle.nn.Linear( 2, 2, weight_attr=paddle.nn.initializer.Constant(value=2.0), bias_attr=paddle.nn.initializer.Constant(value=2.0), ) momentum_old = paddle.fluid.optimizer.Momentum( learning_rate=0.01, momentum=0.9, parameter_list=linear_old.parameters(), regularization=paddle.fluid.regularizer.L2Decay( regularization_coeff=0.1 ), ) self.__update_params(momentum=momentum_old, linear=linear_old) linear_new = paddle.nn.Linear( 2, 2, weight_attr=paddle.nn.initializer.Constant(value=2.0), bias_attr=paddle.nn.initializer.Constant(value=2.0), ) momentum_new = paddle.fluid.contrib.optimizer.Momentum( learning_rate=0.01, momentum=0.9, parameter_list=linear_new.parameters(), regularization=paddle.fluid.regularizer.L2Decay( regularization_coeff=0.1 ), ) self.__update_params(momentum=momentum_new, linear=linear_new) self.assertEqual( (linear_old.weight.numpy() == linear_new.weight.numpy()).all(), True, 'the param weight updated by two Momentum optimizers should equal', ) def test_vs(self, place=fluid.CPUPlace()): places = [fluid.CPUPlace()] if paddle.fluid.core.is_compiled_with_cuda(): places.append(fluid.CUDAPlace(0)) for place in places: self.__test_vs(place=place) class TestMomentumV2Group(TestMomentumV2): def test_momentum_dygraph(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.Momentum( learning_rate=0.01, parameters=[ {'params': linear_1.parameters()}, { 'params': linear_2.parameters(), 'weight_decay': 0.001, 'learning_rate': 0.1, 'momentum': 0.99, }, ], weight_decay=0.1, momentum=0.9, ) out = linear_1(a) out = linear_2(out) out.backward() adam.step() adam.clear_gradients() class TestMultiTensorMomentumDygraph(unittest.TestCase): def _momentum_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) else: model = paddle.nn.Linear(5, 5) if not use_param_group: optimizer = paddle.optimizer.Momentum( parameters=model.parameters(), use_multi_tensor=use_multi_tensor, multi_precision=use_amp, ) else: parameters = list(model.parameters()) n = len(parameters) optimizer = paddle.optimizer.Momentum( parameters=[ { 'params': parameters[: int(n / 2)], 'weight_decay': 0.001, 'learning_rate': 0.1, 'momentum': 0.99, }, { 'params': parameters[int(n / 2) :], 'weight_decay': 0.001, 'learning_rate': 0.1, 'momentum': 0.99, }, ], use_multi_tensor=use_multi_tensor, multi_precision=use_amp, ) for idx in range(5): 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(set_to_zero=False) else: output = model(input) loss = paddle.mean(output) # This can be any optimizer supported by dygraph. loss.backward() optimizer.step() optimizer.clear_grad(set_to_zero=False) return output, model.parameters() 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): output1, params1 = self._momentum_optimize_dygraph( place=place, use_amp=use_amp, use_multi_tensor=True ) output2, params2 = self._momentum_optimize_dygraph( place=place, use_amp=use_amp, 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_arrt(self, place, use_amp): output1, params1 = self._momentum_optimize_dygraph( place=place, use_amp=use_amp, use_param_attr=True, use_multi_tensor=True, ) output2, params2 = self._momentum_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._momentum_optimize_dygraph( place=place, use_amp=use_amp, use_param_group=True, use_multi_tensor=True, ) output2, params2 = self._momentum_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) class TestMultiTensorMomentumStatic(unittest.TestCase): def _momentum_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.Momentum( 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 = numpy.random.random(size=(2, 2)).astype('float16') else: x = numpy.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): output1 = self._momentum_optimize_static( place=place, use_amp=use_amp, use_multi_tensor=True ) output2 = self._momentum_optimize_static( place=place, use_amp=use_amp, use_multi_tensor=False ) for idx in range(len(output1)): np.testing.assert_allclose(output1[idx], output2[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) if __name__ == "__main__": paddle.enable_static() unittest.main()