Design ------------
.. toctree:: :maxdepth: 1 motivation/index_en.rst execution/index_en.rst concepts/index_en.rst data_type/index_en.rst memory/index_en.rst muti_devices/index_en.rst dynamic_rnn/index_en.rst concurrent/index_en.rst algorithm/index_en.rst network/index_en.rst modules/index_en.rst interface/index_en.rst dist_train/index_en.rst
