Created by: gongweibao

Where the 6 rank come from? https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/operators/crop_op.h#L77 https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/operators/pad_op.h#L54 https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/operators/transpose_op.h#L50

Here, the most is 9 rank： https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/framework/ddim.h#L34