Yeah. I'm going to be helping to work on expanding CI for OpenBLAS and have been diving into this stuff lately. See the discussion in this closed OpenBLAS issue

Yeah. I'm going to be helping to work on expanding CI for OpenBLAS and have been diving into this stuff lately. See the discussion in this closed OpenBLAS issue gh-1968 [0] for instance. OpenBLAS’s Skylake kernels do rely heavily on intrinsics [1] for compilers that support them, but there's a wide range of architectures to support, and when hand-tuned assembly kernels work better, that's what are used. For example, [2]. [0] https://github.com/xianyi/OpenBLAS/issues/1968 https://github.com/xianyi/OpenBLAS/issues/1968 [1] https://github.com/xianyi/OpenBLAS/blob/develop/kernel/x86_64/cgemm_kernel_8x2_skylakex.c https://github.com/xianyi/OpenBLAS/blob/develop/kernel/x86_6... [2] https://github.com/xianyi/OpenBLAS/blob/23693f09a26ffd8b60ebdfbfd79ffa5b649d1289/kernel/arm64/cgemm_kernel_8x4_cortexa53.c#L76-L290 https://github.com/xianyi/OpenBLAS/blob/23693f09a26ffd8b60eb...