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106 lines
3.7 KiB
106 lines
3.7 KiB
# Copyright 2021 Huawei Technologies Co., Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# ============================================================================
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"""train_imagenet."""
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import sys
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import argparse
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import random
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import pickle
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import numpy as np
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from train_dataset import create_dataset
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from config import config
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from mindspore import context
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from mindspore.nn.dynamic_lr import piecewise_constant_lr, warmup_lr
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from mindspore.train.model import Model
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from mindspore.train.serialization import load_param_into_net
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from mindspore.train.callback import ModelCheckpoint, CheckpointConfig, LossMonitor # TimeMonitor
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import mindspore.dataset.engine as de
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from mindspore.nn.metrics import Accuracy
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from model.model import resnet50, NetWithLossClass, TrainStepWrap, TestStepWrap
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random.seed(1)
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np.random.seed(1)
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de.config.set_seed(1)
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parser = argparse.ArgumentParser(description='Image classification')
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parser.add_argument('--data_url', type=str, default=None, help='Dataset path')
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parser.add_argument('--train_url', type=str, default=None, help='Train output path')
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args_opt = parser.parse_args()
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context.set_context(mode=context.GRAPH_MODE, device_target="Ascend", save_graphs=False)
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local_data_url = 'data'
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local_train_url = 'ckpt'
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class Logger():
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'''Logger'''
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def __init__(self, logFile="log_max.txt"):
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self.terminal = sys.stdout
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self.log = open(logFile, 'a')
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def write(self, message):
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self.terminal.write(message)
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self.log.write(message)
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self.log.flush()
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def flush(self):
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pass
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sys.stdout = Logger("log/log.txt")
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if __name__ == '__main__':
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epoch_size = config.epoch_size
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net = resnet50(class_num=config.class_num, is_train=True)
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loss_net = NetWithLossClass(net)
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dataset = create_dataset("/home/dingfeifei/datasets/faces_webface_112x112_raw_image", \
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p=config.p, k=config.k)
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step_size = dataset.get_dataset_size()
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base_lr = config.learning_rate
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warm_up_epochs = config.lr_warmup_epochs
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lr_decay_epochs = config.lr_decay_epochs
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lr_decay_factor = config.lr_decay_factor
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lr_decay_steps = []
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lr_decay = []
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for i, v in enumerate(lr_decay_epochs):
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lr_decay_steps.append(v * step_size)
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lr_decay.append(base_lr * lr_decay_factor ** i)
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lr_1 = warmup_lr(base_lr, step_size*warm_up_epochs, step_size, warm_up_epochs)
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lr_2 = piecewise_constant_lr(lr_decay_steps, lr_decay)
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lr = lr_1 + lr_2
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train_net = TrainStepWrap(loss_net, lr, config.momentum)
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test_net = TestStepWrap(net)
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f = open("checkpoints/pretrained_resnet50.pkl", "rb")
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param_dict = pickle.load(f)
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load_param_into_net(net=train_net, parameter_dict=param_dict)
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model = Model(train_net, eval_network=test_net, metrics={"Accuracy": Accuracy()})
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# time_cb = TimeMonitor(data_size=step_size)
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loss_cb = LossMonitor()
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#cb = [time_cb, loss_cb]
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cb = [loss_cb]
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config_ck = CheckpointConfig(save_checkpoint_steps=config.save_checkpoint_steps, \
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keep_checkpoint_max=config.keep_checkpoint_max)
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ckpt_cb = ModelCheckpoint(prefix="resnet", directory='checkpoints/', \
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config=config_ck)
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cb += [ckpt_cb]
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model.train(epoch_size, dataset, callbacks=cb, dataset_sink_mode=True)
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