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- When alpha == 0, we are expected to only scale y vector with beta and not read A or X at all. - This scenario is not handled properly in all code paths which causes NAN and INF from A and X being wrongly propagated. For example, for non-zen architecture (default block in switch case) no such check is present, similarly some of the avx512 kernels are also missing these checks. - When beta == 0, we are not expected to read Y at all, this also is not handled correctly in one of the avx512 kernel. - To fix these, early return condition for alpha == 0 is added to bla layer itself so that each kernel does not have to implement the logic. - DGEMV AVX512 transpose kernel has been fixed to load vector Y only when beta != 0. AMD-Internal: [CPUPL-7585]