How to speedup rnn training speed of tensorflow?

Question

Now base tensorflow-char-rnn I start a word-rnn project to predict the next word. But I found that speed is too slow in my train data set. Here is my training details:

Answer 1

One other possible way you can speed up training, and the possible reason for your lack of utilisation of the GPU, is you are using placeholders. You should be using queues, if using Tensorflow < 1.2, and the tf.contrib.data module otherwise.

https://www.tensorflow.org/programmers_guide/threading_and_queues