[petsc-users] MatMult performance on baij vs aij

[Barry Smith]

   Depending on the block size and the particular hardware and compiler BAIJ can give a noticeable improvement. Expect something between 1 and 2 times faster.

   Barry

> On Aug 24, 2017, at 10:28 AM, Xiangdong <epscodes at gmail.com> wrote:
> 
> Hello everyone,
> 
> For the same sparse matrix, will the storage format (baij or aij) have a noticeable performance effect on MatMult give the baij may have a  better locality?
> 
> Thank you.
> 
> Best,
> Xiangdong