On Wed, Oct 19, 2022 at 9:13 AM 袁煕 <[email protected]> wrote:
Hello,
I am using Mumps to solve a problem with multiple time steps. The matrix structure does not change but its value may or may not change during those steps. That means I should reuse the symbolic factorization but recall numeric factorization when needed.
I have found the following anwser of a similar question https://lists.mcs.anl.gov/pipermail/petsc-users/2020-August/041846.html
which says "it automatically uses the same factorization", but I don't know if it includes numerical factorization also.
My question is : 1. Does numeric factorization do automatically? If not
Yes. Thanks, Matt
2. Could I control when numeric factorization should be done and how to do it?
Much thanks
YUAN
-- 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/>