[petsc-users] questions about vectorization

[Mark Adams]

On Sun, Nov 12, 2017 at 11:35 PM, Xiangdong <epscodes at gmail.com> wrote:

> Hello everyone,
>
> Can someone comment on the vectorization of PETSc? For example, for the
> MatMult function, will it perform better or run faster if it is compiled
> with avx2 or avx512?
>

There are no AVX instructions that I know of in PETSCc, but there are
kernels from 3rd parties that are: 1) the 'hypre' AMG solver and 2) the new
MKL sparse matrix class (wraps MKL, which is probably vectorized).


>
> Thank you.
>
> Best,
> Xiangdong
>
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