[petsc-users] Separate MatAssemblyBegin/MatAssemblyEnd

[Matthew Knepley]

On Thu, Apr 19, 2012 at 6:07 AM, Alexander Grayver
<agrayver at gfz-potsdam.de>wrote:

> I'm wondering what is the main idea behind making XXXAssemblyBegin/**XXXAssemblyEnd
> separate routines?
> I've never used and seen any example where these routines don't follow
> each other.


You can overlap communication and computation by putting flops in between
these calls.

   Matt

-- 
> Regards,
> Alexander
>
>


-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20120419/d19685e0/attachment.htm>