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run_lenet.py 2.9 kB

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  1. # Copyright 2021 Huawei Technologies Co., Ltd
  2. #
  3. # Licensed under the Apache License, Version 2.0 (the "License");
  4. # you may not use this file except in compliance with the License.
  5. # You may obtain a copy of the License at
  6. #
  7. # http://www.apache.org/licenses/LICENSE-2.0
  8. #
  9. # Unless required by applicable law or agreed to in writing, software
  10. # distributed under the License is distributed on an "AS IS" BASIS,
  11. # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12. # See the License for the specific language governing permissions and
  13. # limitations under the License.
  14. # ============================================================================
  15. import sys
  16. import numpy as np
  17. import mindspore.context as context
  18. import mindspore.nn as nn
  19. from mindspore import Tensor
  20. from mindspore.nn import TrainOneStepCell, WithLossCell
  21. from mindspore.nn.optim import Momentum
  22. from mindspore.ops import operations as P
  23. class LeNet(nn.Cell):
  24. def __init__(self):
  25. super(LeNet, self).__init__()
  26. self.relu = P.ReLU()
  27. self.batch_size = 32
  28. self.conv1 = nn.Conv2d(1, 6, kernel_size=5, stride=1, padding=0, has_bias=False, pad_mode='valid')
  29. self.conv2 = nn.Conv2d(6, 16, kernel_size=5, stride=1, padding=0, has_bias=False, pad_mode='valid')
  30. self.pool = nn.MaxPool2d(kernel_size=2, stride=2)
  31. self.reshape = P.Reshape()
  32. self.fc1 = nn.Dense(400, 120)
  33. self.fc2 = nn.Dense(120, 84)
  34. self.fc3 = nn.Dense(84, 10)
  35. def construct(self, input_x):
  36. output = self.conv1(input_x)
  37. output = self.relu(output)
  38. output = self.pool(output)
  39. output = self.conv2(output)
  40. output = self.relu(output)
  41. output = self.pool(output)
  42. output = self.reshape(output, (self.batch_size, -1))
  43. output = self.fc1(output)
  44. output = self.relu(output)
  45. output = self.fc2(output)
  46. output = self.relu(output)
  47. output = self.fc3(output)
  48. return output
  49. def train(net, data, label):
  50. learning_rate = 0.01
  51. momentum = 0.9
  52. optimizer = Momentum(filter(lambda x: x.requires_grad, net.get_parameters()), learning_rate, momentum)
  53. criterion = nn.SoftmaxCrossEntropyWithLogits(sparse=True, reduction='mean')
  54. net_with_criterion = WithLossCell(net, criterion)
  55. train_network = TrainOneStepCell(net_with_criterion, optimizer) # optimizer
  56. train_network.set_train()
  57. res = train_network(data, label)
  58. print("{", res, "}")
  59. print("{", res.asnumpy().shape, "}")
  60. if __name__ == "__main__":
  61. context.set_context(enable_compile_cache=True, compile_cache_path=sys.argv[1])
  62. input_data = Tensor(np.ones([32, 1, 32, 32]).astype(np.float32) * 0.01)
  63. input_label = Tensor(np.ones([32]).astype(np.int32))
  64. lenet = LeNet()
  65. train(lenet, input_data, input_label)
  66. context.set_context(enable_compile_cache=False)