Hello, may I ask if I encounter this problem in train.py under pytorch0.4, is the version incompatible?

[kdy1999]

Targeting inception_v3 with 39 classes
------------------------------------------
Traceback (most recent call last):
  File "C:/Users/junhao/Downloads/Compressed/DeepLearning_PlantDiseases-master/DeepLearning_PlantDiseases-master/Scripts/train.py", line 268, in <module>
    model_pretrained, diff = load_defined_model(name, num_classes)
  File "C:/Users/junhao/Downloads/Compressed/DeepLearning_PlantDiseases-master/DeepLearning_PlantDiseases-master/Scripts/train.py", line 88, in load_defined_model
    diff = [s for s in diff_states(model.state_dict(), pretrained_state)]
  File "C:/Users/junhao/Downloads/Compressed/DeepLearning_PlantDiseases-master/DeepLearning_PlantDiseases-master/Scripts/train.py", line 88, in <listcomp>
    diff = [s for s in diff_states(model.state_dict(), pretrained_state)]
  File "C:/Users/junhao/Downloads/Compressed/DeepLearning_PlantDiseases-master/DeepLearning_PlantDiseases-master/Scripts/train.py", line 67, in diff_states
    assert len(not_in_1) == 0
AssertionError

[VietTralala]

I encounter that problem under 1.0 and 0.4 as well

I think this problem relates with the fact that '.' are no longer allowed in module names, but densenet has keys 'norm.2' etc. (see. https://pytorch.org/docs/stable/_modules/torchvision/models/densenet.html#densenet169)

[caizhuo]

@vthuongt Do you know how to solve it?

[VietTralala]

@caizhuo I could resolve this issue and get the code running. However my evaluation accuracy is 0. So I am not sure if I messed something up while trying to fix this issue. Can you test it on you machine and give me some feedback please?

The following changes made the code runnable:

• change labels.cuda(async=True) to labels.cuda(non_blocking=True)
• change loss.data[0] to loss.item() as suggested py pytorch
• EDIT: change accuracy calculation in function _evaluatestats(net, testloader) to accuracy = correct.to(dtype=torch.float)/total due to recent changes in pytorch

• change the function _load_definedmodel() as follows:

  
  def load_defined_model(name, num_classes):
  
  model = models.__dict__[name](num_classes=num_classes)
  
  #Densenets don't (yet) pass on num_classes, hack it in for 169
  if name == 'densenet169':
      model = models.DenseNet(num_init_features=64, growth_rate=32, \
                              block_config=(6, 12, 32, 32),
                              num_classes=num_classes)
  
  elif name == 'densenet121':
      model = models.DenseNet(num_init_features=64, growth_rate=32, \
                              block_config=(6, 12, 24, 16),
                              num_classes=num_classes)
  
  elif name == 'densenet201':
      model = models.DenseNet(num_init_features=64, growth_rate=32, \
                              block_config=(6, 12, 48, 32),
                              num_classes=num_classes)
  
  elif name == 'densenet161':
      model = models.DenseNet(num_init_features=96, growth_rate=48, \
                              block_config=(6, 12, 36, 24),
                              num_classes=num_classes)
  elif name.startswith('densenet'):
      raise ValueError(
          "Cirumventing missing num_classes kwargs not implemented for %s" % name)
  
  pretrained_state = model_zoo.load_url(model_urls[name])
  
  if name.startswith('densenet'):
      pattern = re.compile(
          r'^(.*denselayer\d+\.(?:norm|relu|conv))\.((?:[12])\.(?:weight|bias|running_mean|running_var))$')
      for key in list(pretrained_state.keys()):
          res = pattern.match(key)
          if res:
              new_key = res.group(1) + res.group(2)
              pretrained_state[new_key] = pretrained_state[key]
              del pretrained_state[key]
  
  # remove num_batches_tracked layers
  new_state =  {key: value for key, value in model.state_dict().items() if not key.endswith('num_batches_tracked')}
  
  #Diff
  #diff = [s for s in diff_states(model.state_dict(), pretrained_state)]
  diff = [s for s in diff_states(new_state, pretrained_state)]
  
  print("Replacing the following state from initialized", name, ":", \
        [d[0] for d in diff])
  
  for name, value in diff:
      pretrained_state[name] = value
  
  #assert len([s for s in diff_states(model.state_dict(), pretrained_state)]) == 0
  assert len([s for s in diff_states(new_state, pretrained_state)]) == 0
  
  #Merge
  model.load_state_dict(pretrained_state)
  return model, diff

BTW: I found some repo which I think should also get some credit since the train.py script from this repo seems to be very similar to the script here:
https://github.com/ahirner/pytorch-retraining

[caizhuo]

I'm running the code, and I'll tell you when I'm done.

------------------ 原始邮件 ------------------ 发件人: "vthuongt"notifications@github.com; 发送时间: 2019年1月6日(星期天) 上午9:36 收件人: "MarkoArsenovic/DeepLearning_PlantDiseases"DeepLearning_PlantDiseases@noreply.github.com; 抄送: "蔡茁"616919043@qq.com; "Mention"mention@noreply.github.com; 主题: Re: [MarkoArsenovic/DeepLearning_PlantDiseases] Hello, may I ask if Iencounter this problem in train.py under pytorch0.4, is the versionincompatible? (#2)

@caizhuo I could resolve this issue and get the code running. However my evaluation accuracy is 0. So I am not sure if I messed something up while trying to fix this issue. Can you test it on you machine and give me some feedback please?

The following changes made the code runnable:

change labels.cuda(async=True) to labels.cuda(non_blocking=True)

change loss.data[0] to loss.item() as suggested py pytorch

change the function load_defined_model() as follows: def load_defined_model(name, num_classes): model = models.dictname print(name) print(num_classes) #Densenets don't (yet) pass on num_classes, hack it in for 169 if name == 'densenet169': model = models.DenseNet(num_init_features=64, growth_rate=32, \ block_config=(6, 12, 32, 32), num_classes=num_classes) elif name == 'densenet121': model = models.DenseNet(num_init_features=64, growth_rate=32, \ block_config=(6, 12, 24, 16), num_classes=num_classes) elif name == 'densenet201': model = models.DenseNet(num_init_features=64, growth_rate=32, \ block_config=(6, 12, 48, 32), num_classes=num_classes) elif name == 'densenet161': model = models.DenseNet(num_init_features=96, growth_rate=48, \ block_config=(6, 12, 36, 24), num_classes=num_classes) elif name.startswith('densenet'): raise ValueError( "Cirumventing missing num_classes kwargs not implemented for %s" % name) pretrained_state = model_zoo.load_url(model_urls[name]) if name.startswith('densenet'): pattern = re.compile( r'^(.*denselayer\d+.(?:norm|relu|conv)).((?:[12]).(?:weight|bias|running_mean|running_var))$') for key in list(pretrained_state.keys()): res = pattern.match(key) if res: new_key = res.group(1) + res.group(2) pretrained_state[new_key] = pretrained_state[key] del pretrained_state[key] # remove num_batches_tracked layers new_state = {key: value for key, value in model.state_dict().items() if not key.endswith('num_batches_tracked')} #Diff #diff = [s for s in diff_states(model.state_dict(), pretrained_state)] diff = [s for s in diff_states(new_state, pretrained_state)] print("Replacing the following state from initialized", name, ":", \ [d[0] for d in diff]) for name, value in diff: pretrained_state[name] = value #assert len([s for s in diff_states(model.state_dict(), pretrained_state)]) == 0 assert len([s for s in diff_states(new_state, pretrained_state)]) == 0 #Merge model.load_state_dict(pretrained_state) return model, diff
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[caizhuo]

@vthuongt My code works, and my accuracy is not 0.

[caizhuo]

@vthuongt However, there is an overflow problem at this step. Can you help me with this problem?

RETRAINING deep

Targeting alexnet with 39 classes

Replacing the following state from initialized alexnet : ['classifier.6.weight', 'classifier.6.bias'] Resizing input images to max of (224, 224) Transfering models to GPU(s) Training... THCudaCheck FAIL file=c:\users\administrator\downloads\new-builder\win-wheel\pytorch\aten\src\thc\generic/THCStorage.cu line=58 error=2 : out of memory Traceback (most recent call last): File "train.py", line 390, in pretrained_stats = train_eval(model_pretrained, trainloader, testloader, None) File "train.py", line 308, in train_eval stats_train = train_stats(net, trainloader, param_list=param_list) File "train.py", line 274, in train_stats losses = train(m, trainloader, param_list=param_list) File "train.py", line 244, in train loss.backward() File "D:\software\Anaconda3\envs\pytorch36\lib\site-packages\torch\tensor.py", line 93, in backward torch.autograd.backward(self, gradient, retain_graph, create_graph) File "D:\software\Anaconda3\envs\pytorch36\lib\site-packages\torch\autograd__init__.py", line 89, in backward allow_unreachable=True) # allow_unreachable flag RuntimeError: cuda runtime error (2) : out of memory at c:\users\administrator\downloads\new-builder\win-wheel\pytorch\aten\src\thc\generic/THCStorage.cu:58

[VietTralala]

It seems your GPU doesn't have enough memory available to load the NN and do the calculations. Try lowering the batchsize and monitor the GPU usage. Also wrapping the evaluation part of the code with torch.no_grad() helps when the evaluation process fails.

[myyhs]

@vthuongt @caizhuo

• I use your approachs ,now my accuracy in not 0,but I get a new problem

`Targeting densenet169 with 39 classes

/opt/conda/lib/python3.6/site-packages/torchvision-0.2.1-py3.6.egg/torchvision/models/densenet.py:212: UserWarning: nn.init.kaiming_normal is now deprecated in favor of nn.init.kaimingnormal. Traceback (most recent call last): File "train.py", line 311, in model_pretrained, diff = load_defined_model(name, num_classes) File "train.py", line 112, in load_defined_model pattern = re.compile( NameError: name 're' is not defined`

[VietTralala]

@myyhs as the error suggest you need to import the re module for regular expressions

[NsrWissam]

When using alexnet from scratch i am getting "nan" as loss after the 8th epoch for some reason. can anyone help me ? After that the alexnet_deep also directly shows a loss of "nan"