zr_hannah

@ppwwyyxx @reedwm Does tf_cnn_benchmarks slow down the training progress if ignoring the shift_ratio? Because the workers may train the same small part of images occasionally. By the way, when will...

@reedwm I am afraid that tf_cnn_benchmark ignores shift_ratio when use --nouse_datasets and --nodatasets_use_prefetch also, because _build_image_processing takes shift_ratio 0 as input in _build_model function, and self.image_preprocessr.minibatch only uses self.shift_ratio instead...