That makes sense. Is there a reasonably easy way of doing that in PETSc currently for reasonably large systems?
Gaetan On Mon, Apr 29, 2013 at 4:32 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote: > Gaetan Kenway <gaetank at gmail.com> writes: > > > I would be very interested in looking at the problematic eigenmodes as > > well. On my end I use Tecplot for all my visualization. What sort of > > visualization technique are you thinking about? Is it the KSP subspace > > vectors you want to look at? > > No, it would be an eigensolve for either outliers or eigenvalues very > close to zero. The cost to find the vector is like several solves, but > it would tell us exactly what sort of functions are poorly approximated > by the preconditioner. Then we would think about how we can change > algorithms to make the preconditioner correct those functions better. > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20130429/b1ad4c19/attachment-0001.html>
