colab fastai text

gistfile1.txt

TypeError                                 Traceback (most recent call last)

/usr/local/lib/python3.6/dist-packages/fastai/basic_train.py in fit(epochs, learn, callbacks, metrics)
    107             else: val_loss=None
--> 108             if cb_handler.on_epoch_end(val_loss): break
    109     except Exception as e:

17 frames

/usr/local/lib/python3.6/dist-packages/fastai/callback.py in on_epoch_end(self, val_loss)
    316         self.state_dict['last_metrics'] = [val_loss] if val_loss is not None else [None]
--> 317         self('epoch_end', call_mets = val_loss is not None)
    318         self.state_dict['epoch'] += 1

/usr/local/lib/python3.6/dist-packages/fastai/callback.py in __call__(self, cb_name, call_mets, **kwargs)
    250             for met in self.metrics: self._call_and_update(met, cb_name, **kwargs)
--> 251         for cb in self.callbacks: self._call_and_update(cb, cb_name, **kwargs)
    252 

/usr/local/lib/python3.6/dist-packages/fastai/callback.py in _call_and_update(self, cb, cb_name, **kwargs)
    240         "Call `cb_name` on `cb` and update the inner state."
--> 241         new = ifnone(getattr(cb, f'on_{cb_name}')(**self.state_dict, **kwargs), dict())
    242         for k,v in new.items():

/usr/local/lib/python3.6/dist-packages/fastai/callbacks/tracker.py in on_epoch_end(self, epoch, **kwargs)
     96             current = self.get_monitor_value()
---> 97             if current is not None and self.operator(current, self.best):
     98                 print(f'Better model found at epoch {epoch} with {self.monitor} value: {current}.')

/usr/local/lib/python3.6/dist-packages/torch/tensor.py in __array__(self, dtype)
    448         if dtype is None:
--> 449             return self.numpy()
    450         else:

TypeError: can't convert CUDA tensor to numpy. Use Tensor.cpu() to copy the tensor to host memory first.