AtrributeError MomentSGD optimizer has no attribute prepare












0














Recently, I run the code released by other authors. They utilized chainer v1.3, but I installed v4. When I run the code, it errors that Attribute Errors: MomentSGD optimizer has no attribute prepare. Here I post the codes of this part:



class BaseModel(chainer.Chain):
loss = None
accuracy = None
gpu_mode = False
_train = False
def __call__(self, *arg_list, **arg_dict):
raise NotImplementedError()
def clear(self):
self.loss = None
self.accuracy = None
def train(self, data, optimizer):
self._train = True
optimizer.update(self, data)
if self.accuracy is None:
return float(self.loss.data)
else:
return float(self.loss.data), float(self.accuracy.data)
def validate(self, data):
self._train = False
self(data)
if self.accuracy is None:
return float(self.loss.data)
else:
return float(self.loss.data), float(self.accuracy.data)
def test(self, data):
self._train = False
raise NotImplementedError()
def save(self, fname):
serializers.save_hdf5(fname, self)
def load(self, fname):
serializers.load_hdf5(fname, self)
def cache(self):
self.to_cpu()
cached_model = self.copy()
self.to_gpu()
return cached_model
# this part is the error part
def setup(self, optimizer):
self.to_gpu()
optimizer.target = self
optimizer.prepare()
def to_cpu(self):
if not self.gpu_mode:
return
super(BaseModel, self).to_cpu()
self.gpu_mode = False
def to_gpu(self):
if self.gpu_mode:
return
super(BaseModel, self).to_gpu()
self.gpu_mode = True









share|improve this question



























    0














    Recently, I run the code released by other authors. They utilized chainer v1.3, but I installed v4. When I run the code, it errors that Attribute Errors: MomentSGD optimizer has no attribute prepare. Here I post the codes of this part:



    class BaseModel(chainer.Chain):
    loss = None
    accuracy = None
    gpu_mode = False
    _train = False
    def __call__(self, *arg_list, **arg_dict):
    raise NotImplementedError()
    def clear(self):
    self.loss = None
    self.accuracy = None
    def train(self, data, optimizer):
    self._train = True
    optimizer.update(self, data)
    if self.accuracy is None:
    return float(self.loss.data)
    else:
    return float(self.loss.data), float(self.accuracy.data)
    def validate(self, data):
    self._train = False
    self(data)
    if self.accuracy is None:
    return float(self.loss.data)
    else:
    return float(self.loss.data), float(self.accuracy.data)
    def test(self, data):
    self._train = False
    raise NotImplementedError()
    def save(self, fname):
    serializers.save_hdf5(fname, self)
    def load(self, fname):
    serializers.load_hdf5(fname, self)
    def cache(self):
    self.to_cpu()
    cached_model = self.copy()
    self.to_gpu()
    return cached_model
    # this part is the error part
    def setup(self, optimizer):
    self.to_gpu()
    optimizer.target = self
    optimizer.prepare()
    def to_cpu(self):
    if not self.gpu_mode:
    return
    super(BaseModel, self).to_cpu()
    self.gpu_mode = False
    def to_gpu(self):
    if self.gpu_mode:
    return
    super(BaseModel, self).to_gpu()
    self.gpu_mode = True









    share|improve this question

























      0












      0








      0







      Recently, I run the code released by other authors. They utilized chainer v1.3, but I installed v4. When I run the code, it errors that Attribute Errors: MomentSGD optimizer has no attribute prepare. Here I post the codes of this part:



      class BaseModel(chainer.Chain):
      loss = None
      accuracy = None
      gpu_mode = False
      _train = False
      def __call__(self, *arg_list, **arg_dict):
      raise NotImplementedError()
      def clear(self):
      self.loss = None
      self.accuracy = None
      def train(self, data, optimizer):
      self._train = True
      optimizer.update(self, data)
      if self.accuracy is None:
      return float(self.loss.data)
      else:
      return float(self.loss.data), float(self.accuracy.data)
      def validate(self, data):
      self._train = False
      self(data)
      if self.accuracy is None:
      return float(self.loss.data)
      else:
      return float(self.loss.data), float(self.accuracy.data)
      def test(self, data):
      self._train = False
      raise NotImplementedError()
      def save(self, fname):
      serializers.save_hdf5(fname, self)
      def load(self, fname):
      serializers.load_hdf5(fname, self)
      def cache(self):
      self.to_cpu()
      cached_model = self.copy()
      self.to_gpu()
      return cached_model
      # this part is the error part
      def setup(self, optimizer):
      self.to_gpu()
      optimizer.target = self
      optimizer.prepare()
      def to_cpu(self):
      if not self.gpu_mode:
      return
      super(BaseModel, self).to_cpu()
      self.gpu_mode = False
      def to_gpu(self):
      if self.gpu_mode:
      return
      super(BaseModel, self).to_gpu()
      self.gpu_mode = True









      share|improve this question













      Recently, I run the code released by other authors. They utilized chainer v1.3, but I installed v4. When I run the code, it errors that Attribute Errors: MomentSGD optimizer has no attribute prepare. Here I post the codes of this part:



      class BaseModel(chainer.Chain):
      loss = None
      accuracy = None
      gpu_mode = False
      _train = False
      def __call__(self, *arg_list, **arg_dict):
      raise NotImplementedError()
      def clear(self):
      self.loss = None
      self.accuracy = None
      def train(self, data, optimizer):
      self._train = True
      optimizer.update(self, data)
      if self.accuracy is None:
      return float(self.loss.data)
      else:
      return float(self.loss.data), float(self.accuracy.data)
      def validate(self, data):
      self._train = False
      self(data)
      if self.accuracy is None:
      return float(self.loss.data)
      else:
      return float(self.loss.data), float(self.accuracy.data)
      def test(self, data):
      self._train = False
      raise NotImplementedError()
      def save(self, fname):
      serializers.save_hdf5(fname, self)
      def load(self, fname):
      serializers.load_hdf5(fname, self)
      def cache(self):
      self.to_cpu()
      cached_model = self.copy()
      self.to_gpu()
      return cached_model
      # this part is the error part
      def setup(self, optimizer):
      self.to_gpu()
      optimizer.target = self
      optimizer.prepare()
      def to_cpu(self):
      if not self.gpu_mode:
      return
      super(BaseModel, self).to_cpu()
      self.gpu_mode = False
      def to_gpu(self):
      if self.gpu_mode:
      return
      super(BaseModel, self).to_gpu()
      self.gpu_mode = True






      chainer






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      asked Nov 21 at 3:06









      Meng Liu

      1




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          Newer version of chainer uses setup method to initialize optimizer.



          Can you try modifing your code as follows?



            def setup(self, optimizer):
          self.to_gpu()
          optimizer.setup(self)





          share|improve this answer





















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            1 Answer
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            1 Answer
            1






            active

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            active

            oldest

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            active

            oldest

            votes









            0














            Newer version of chainer uses setup method to initialize optimizer.



            Can you try modifing your code as follows?



              def setup(self, optimizer):
            self.to_gpu()
            optimizer.setup(self)





            share|improve this answer


























              0














              Newer version of chainer uses setup method to initialize optimizer.



              Can you try modifing your code as follows?



                def setup(self, optimizer):
              self.to_gpu()
              optimizer.setup(self)





              share|improve this answer
























                0












                0








                0






                Newer version of chainer uses setup method to initialize optimizer.



                Can you try modifing your code as follows?



                  def setup(self, optimizer):
                self.to_gpu()
                optimizer.setup(self)





                share|improve this answer












                Newer version of chainer uses setup method to initialize optimizer.



                Can you try modifing your code as follows?



                  def setup(self, optimizer):
                self.to_gpu()
                optimizer.setup(self)






                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 21 at 4:09









                corochann

                1,0701618




                1,0701618






























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