On Fri, Dec 9, 2011 at 10:06 AM, Alexander Grayver <agrayver at gfz-potsdam.de>wrote:
> ** > On 09.12.2011 16:58, Matthew Knepley wrote: > > On Fri, Dec 9, 2011 at 9:44 AM, Alexander Grayver <agrayver at gfz-potsdam.de > > wrote: > >> Hello, >> >> Sorry for dummy question, but what are options for parallel ILU in petsc? >> Which packages are best for big sparse matrices (>= 10^6)? >> Where do I start from? >> > > http://www.mcs.anl.gov/petsc/petsc-dev/docs/linearsolvertable.html > > I generally recommend against parallel ILU, but Hypre has it. > > Why? > Its fundamentally not scalable, has unpredictable performance, and in my experience worse than sparse direct. Matt > Matt > > Regards, >> Alexander >> > > > > -- > 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 > > > -- 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/20111209/e535a288/attachment.htm>
