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Towards Free Normalization: Fusing Normalization into GEMM and Attention Kernels

calendar_today July 10, 2026 person Jacky (Junqing) Zhou, Hongtao Yu, Jackie (Jiaqi) Xu, Menglu Yu, Ethan Che, Han Xu, Darren Liu, Peng Chen (Dev Infra), Daohang Shi, Max Leung domain pytorch

Code available at: https://github.com/facebookresearch/ads_model_kernel_library/tree/main/multi_cta_norm_fusion and https://github.com/facebookresearch/ads_model_kernel_library/tree/main/gdpa_megakernel TL;DR In this blog post, we present various novel kernel fusion techniques for common normalization ops like LayerNorm and RMSNorm, which provide significant speedup…

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