title: How to use TPU on LSTM?
body: <p>I am trying to use TPU in colab to speed up the training process of LSTM. But I am keep getting the error: Unable to find the relevant tensor remote_handle: Op ID: 529, Output num: 0</p>
  <p>The code and data link are shared below, can anyone please help me to fix this error? Much appreciated :-)</p>
  <p>colab code: <a href="https://colab.research.google.com/drive/1t1kDuehLNjVhrtmCXdeSAbPcI5Vht90P?usp=sharing" rel="nofollow noreferrer">https://colab.research.google.com/drive/1t1kDuehLNjVhrtmCXdeSAbPcI5Vht90P?usp=sharing</a>
  data file（OHLC and indicators，139 columns in total）：https://drive.google.com/file/d/180Ai703VHdICN1VtQl4zWkZw0vHNMoBm/view?usp=sharing</p>