On Fri, Apr 15, 2011 at 5:51 AM, Thomas Witkowski < thomas.witkowski at tu-dresden.de> wrote:
> Jed Brown wrote: > > On Fri, Apr 15, 2011 at 12:06, Thomas Witkowski < >> thomas.witkowski at tu-dresden.de <mailto:thomas.witkowski at tu-dresden.de>> >> wrote: >> >> Which package must be installed to make use of "ml" (algebraic >> multigrid?) as a preconditioner? >> >> >> ML, --download-ml >> also -pc_type hypre (BoomerAMG is default) from, you guessed it, Hypre, >> --download-hypre >> > But it works with MatAIJ with MatSetBlockSize(x). What is the difference > between using MatBAIJ and MatAIJ with setting the block size directly? > BAIJ changes the internal storage format to make things run faster. ML does not handle this. Matt -- 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 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20110415/7d036e81/attachment.htm>
