On Wed, Oct 19, 2022 at 9:13 AM 袁煕 <yua...@advancesoft.jp> 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/>