rightchose

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![0000000000](https://user-images.githubusercontent.com/26225734/131850088-61f39e12-225a-4b10-a8b5-e372ba579335.png)

请问这里https://github.com/InternLM/lmdeploy/blob/e96e2b4ce0f484818611962eb128f2bbb22896c2/src/turbomind/kernels/gemm_s_f16/gemm_s4_f16_kernel.h#L83有关grid norm的计算有什么依据吗?