[petsc-users] MatMult performance on baij vs aij

Barry Smith bsmith at mcs.anl.gov
Thu Aug 24 12:36:53 CDT 2017

   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.


> 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

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