Zitat von Jed Brown <jedbrown at mcs.anl.gov>: > On Mon, Nov 21, 2011 at 04:00, Thomas Witkowski < > Thomas.Witkowski at tu-dresden.de> wrote: > >> Some technical question on this point: How can I explicitly factorize a >> sequential matrix? Is MatLUFactor the correct function to do it? > > > In general, I recommend using the KSP. You can KSPSetType(ksp,KSPPREONLY), > PCSetType(pc,PCLU). Call KSPSolve() multiple times, the factorization will > be reused. Or you can use MatLUFactor() directly if you really want. > >
Okay, but how to make use of the KSP in MatMatSolve?
