<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Nov 12, 2017 at 11:35 PM, Xiangdong <span dir="ltr"><<a href="mailto:epscodes@gmail.com" target="_blank">epscodes@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hello everyone,<div><br></div><div>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?</div></div></blockquote><div><br></div><div>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).</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><br></div><div>Thank you.</div><div><br></div><div>Best,</div><div>Xiangdong</div></div>
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