I’m curious about this as well. Can you currently use fractional GPU usage as in tensorflow? The tf equivalent is something like this:
    with tf.device(FLAGS.device):
        gpu_options = tf.GPUOptions(per_process_gpu_memory_fraction=FLAGS.device_percentage)
        sess_cfg = tf.ConfigProto(allow_soft_placement=FLAGS.allow_soft_placement,
                                  gpu_options=gpu_options)