Simple: it's better when it's faster. Small problems and moderate-size 2D problems often work well with direct solvers. On Oct 30, 2012 8:29 AM, "w_ang_temp" <w_ang_temp at 163.com> wrote:
> Hello, > As is know, MUMPS is based on a direct method. When the system is big, > the parallel direct solver is > not effective compared with the iterative solver. So when is it better to > use MUMPS? > Thanks. > Jim > > > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20121030/dd64eaa1/attachment.html>
