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# Copyright 2020 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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import pytest
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import mindspore.nn as nn
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from mindspore import Tensor
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from mindspore.ops import operations as P
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from mindspore.nn.optim.momentum import Momentum
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from mindspore.train.model import Model
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from mindspore import context
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import mindspore.common.dtype as mstype
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import os
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import numpy as np
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import mindspore.ops.functional as F
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from mindspore.train.callback import ModelCheckpoint, CheckpointConfig, Callback
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from mindspore.train.serialization import load_checkpoint, load_param_into_net
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import mindspore.dataset as ds
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import mindspore.dataset.transforms.c_transforms as C
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import mindspore.dataset.transforms.vision.c_transforms as vision
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from resnet import resnet50
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import random
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import time
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random.seed(1)
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np.random.seed(1)
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ds.config.set_seed(1)
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data_home = "/home/workspace/mindspore_dataset"
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def create_dataset(repeat_num=1, training=True, batch_size=32):
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data_dir = data_home + "/cifar-10-batches-bin"
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if not training:
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data_dir = data_home + "/cifar-10-verify-bin"
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data_set = ds.Cifar10Dataset(data_dir)
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resize_height = 224
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resize_width = 224
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rescale = 1.0 / 255.0
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shift = 0.0
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# define map operations
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random_crop_op = vision.RandomCrop(
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(32, 32), (4, 4, 4, 4)) # padding_mode default CONSTANT
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random_horizontal_op = vision.RandomHorizontalFlip()
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# interpolation default BILINEAR
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resize_op = vision.Resize((resize_height, resize_width))
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rescale_op = vision.Rescale(rescale, shift)
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normalize_op = vision.Normalize(
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(0.4465, 0.4822, 0.4914), (0.2010, 0.1994, 0.2023))
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changeswap_op = vision.HWC2CHW()
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type_cast_op = C.TypeCast(mstype.int32)
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c_trans = []
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if training:
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c_trans = [random_crop_op, random_horizontal_op]
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c_trans += [resize_op, rescale_op, normalize_op,
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changeswap_op]
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# apply map operations on images
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data_set = data_set.map(input_columns="label", operations=type_cast_op)
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data_set = data_set.map(input_columns="image", operations=c_trans)
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# apply shuffle operations
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data_set = data_set.shuffle(buffer_size=1000)
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# apply batch operations
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data_set = data_set.batch(batch_size=batch_size, drop_remainder=True)
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# apply repeat operations
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data_set = data_set.repeat(repeat_num)
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return data_set
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class CrossEntropyLoss(nn.Cell):
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def __init__(self):
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super(CrossEntropyLoss, self).__init__()
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self.cross_entropy = P.SoftmaxCrossEntropyWithLogits()
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self.mean = P.ReduceMean()
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self.one_hot = P.OneHot()
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self.one = Tensor(1.0, mstype.float32)
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self.zero = Tensor(0.0, mstype.float32)
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def construct(self, logits, label):
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label = self.one_hot(label, F.shape(logits)[1], self.one, self.zero)
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loss = self.cross_entropy(logits, label)[0]
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loss = self.mean(loss, (-1,))
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return loss
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class LossGet(Callback):
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def __init__(self, per_print_times=1):
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super(LossGet, self).__init__()
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if not isinstance(per_print_times, int) or per_print_times < 0:
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raise ValueError("print_step must be int and >= 0.")
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self._per_print_times = per_print_times
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self._loss = 0.0
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def step_end(self, run_context):
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cb_params = run_context.original_args()
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loss = cb_params.net_outputs
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if isinstance(loss, (tuple, list)):
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if isinstance(loss[0], Tensor) and isinstance(loss[0].asnumpy(), np.ndarray):
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loss = loss[0]
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if isinstance(loss, Tensor) and isinstance(loss.asnumpy(), np.ndarray):
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loss = np.mean(loss.asnumpy())
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cur_step_in_epoch = (cb_params.cur_step_num - 1) % cb_params.batch_num + 1
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if isinstance(loss, float) and (np.isnan(loss) or np.isinf(loss)):
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raise ValueError("epoch: {} step: {}. Invalid loss, terminating training."
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.format(cb_params.cur_epoch_num, cur_step_in_epoch))
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if self._per_print_times != 0 and cb_params.cur_step_num % self._per_print_times == 0:
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self._loss = loss
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print("epoch: %s step: %s, loss is %s" % (cb_params.cur_epoch_num, cur_step_in_epoch, loss))
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def get_loss(self):
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return self._loss
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def train_process(device_id, epoch_size, num_classes, device_num, batch_size):
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os.system("mkdir " + str(device_id))
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os.chdir(str(device_id))
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context.set_context(mode=context.GRAPH_MODE, device_target="Ascend")
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context.set_context(enable_task_sink=True, device_id=device_id)
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context.set_context(enable_loop_sink=True)
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context.set_context(enable_mem_reuse=True)
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context.set_context(mode=context.GRAPH_MODE)
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net = resnet50(batch_size, num_classes)
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loss = CrossEntropyLoss()
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opt = Momentum(filter(lambda x: x.requires_grad,
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net.get_parameters()), 0.01, 0.9)
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model = Model(net, loss_fn=loss, optimizer=opt, metrics={'acc'})
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dataset = create_dataset(epoch_size, training=True, batch_size=batch_size)
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batch_num = dataset.get_dataset_size()
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config_ck = CheckpointConfig(save_checkpoint_steps=batch_num, keep_checkpoint_max=1)
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ckpoint_cb = ModelCheckpoint(prefix="train_resnet_cifar10_device_id_" + str(device_id), directory="./",
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config=config_ck)
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loss_cb = LossGet()
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model.train(epoch_size, dataset, callbacks=[ckpoint_cb, loss_cb])
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def eval(batch_size, num_classes):
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context.set_context(mode=context.GRAPH_MODE, device_target="Ascend")
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context.set_context(enable_task_sink=True, device_id=0)
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context.set_context(enable_loop_sink=True)
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context.set_context(enable_mem_reuse=True)
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net = resnet50(batch_size, num_classes)
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loss = CrossEntropyLoss()
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opt = Momentum(filter(lambda x: x.requires_grad,
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net.get_parameters()), 0.01, 0.9)
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model = Model(net, loss_fn=loss, optimizer=opt, metrics={'acc'})
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checkpoint_path = "./train_resnet_cifar10_device_id_0-1_1562.ckpt"
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param_dict = load_checkpoint(checkpoint_path)
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load_param_into_net(net, param_dict)
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net.set_train(False)
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eval_dataset = create_dataset(1, training=False)
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res = model.eval(eval_dataset)
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print("result: ", res)
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return res
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@pytest.mark.level0
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@pytest.mark.platform_arm_ascend_training
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@pytest.mark.platform_x86_ascend_training
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@pytest.mark.env_onecard
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def test_resnet_cifar_1p():
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device_num = 1
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epoch_size = 1
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num_classes = 10
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batch_size = 32
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device_id = 0
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train_process(device_id, epoch_size, num_classes, device_num, batch_size)
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time.sleep(3)
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acc = eval(batch_size, num_classes)
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os.chdir("../")
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os.system("rm -rf " + str(device_id))
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print("End training...")
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assert (acc['acc'] > 0.35)
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