Jed, Matt, Ok, I see. Perhaps it was bad idea to play around with ILU for my problems...
Regards, Alexander On 09.12.2011 17:16, Matthew Knepley wrote: > On Fri, Dec 9, 2011 at 10:06 AM, Alexander Grayver > <agrayver at gfz-potsdam.de <mailto: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 <mailto: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/20111209/183203df/attachment-0001.htm>
