support latest pytorch

[MandyMo]

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Since the original code does not work well with Pytorch 0.4 or later, regard this concern, I reimplement the CNN part that supports the latest Pytorch, and the code is available at https://github.com/MandyMo/DARTS.

[tmp-coder]

does work -> does not work ?

[MandyMo]

does work -> does not work ?

thank you.

[alphadl]

I also improved the code to make it compatible with PyTorch 1.1 while allowing multi-GPU training on both RNN and CNN experiments.~ you can refer: https://github.com/alphadl/darts.pytorch1.1

[shentanyue]

@alphadl Hi, I tried your multi-GPU code, but it doesn't seem to work effectively. Could you help me?

[fortunechen]

I also improved the code to make it compatible with PyTorch 1.1 while allowing multi-GPU training on both RNN and CNN experiments.~ you can refer: https://github.com/alphadl/darts.pytorch1.1

hi, the weight in your code should require grad. However after I change this line, I still cannot reprodcue rnn result in this paper.