Tensorflow设置显存自适应，显存比例

1 config = tf.ConfigProto()
2 config.gpu_options.per_process_gpu_memory_fraction = 0.4
3 session = tf.Session(config=config, ...)

1     session_bundle_config.mutable_session_config()
2         ->mutable_gpu_options()
3         ->set_per_process_gpu_memory_fraction(0.4);

1 config = tf.ConfigProto()
2 config.gpu_options.allow_growth = True
3 session = tf.Session(config=config, ...)

1     session_bundle_config.mutable_session_config()
2         ->mutable_gpu_options()
3         ->set_allow_growth(true);