[petsc-users] Speed of matrix assembly

[Matthew Knepley]

On Thu, Dec 1, 2022 at 2:32 AM 김성익 <ksi2443 at gmail.com> wrote:

> Hello,
>
>
> I set a large-sized global matrix through matsetsize and proceed with the
> process of assembling multiple local-sized matrices into a global matrix
> (By using MatSetValue).
>
> However, only using matsetsize much less than expected performance.
> In this case, what can be done to speed up assembly?
>

https://petsc.org/main/faq/#assembling-large-sparse-matrices-takes-a-long-time-what-can-i-do-to-make-this-process-faster-or-matsetvalues-is-so-slow-what-can-i-do-to-speed-it-up

  Thanks,

    Matt


> Thanks,
> Hyung Kim
>


-- 
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

https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20221201/a2bf6fc0/attachment.html>