Thanks Mat, according tot he hypre documentation, pilut is "no longer supported by the hypre team", as less efficient than Euclid, so I wouldn't consider an option. I wsa looking for a "natural" upgrade path.
The problems we've looked at for the moment can be up to a few millions cells (that's the size of the pressure block, the saturation block is larger, but should be easier to solve). We're aiming for 10^6 cells, and 10^3 cores. Yes, direct methods deserve a second look ! Michel ----- Mail original ----- > On Tue, Feb 7, 2017 at 2:49 AM, Michel Kern < michel.k...@inria.fr > wrote: > > I have a code that uses euclid for ILU preconditioning (as part of a > > CPR-AMG > > preconditioner for a mulitphase flow solver). As noted in the release > > notes, > > euclid is no longer supported starting from 3.6. What is the recommended > > replacement ? Is block Jacobi plus a local solver an alternative ? > > There is pilut from Hypre. > How big is the problem? Did you try sparse direct on it (SuperLU, MUMPS)? > Thanks, > Matt > > Thanks > > > Michel > > > -- > > > Michel Kern > > > Centre de Recherche Inria de Paris, Maison de la Simulation > > > 2 rue Simone Iff, bureau A413, Digiteo Labs, bât 565, CEA Saclay > > > 75012 Paris 91191 Gif-sur-Yvette cedex > > > tel. : +33 (0)1 80 49 42 36 , tel. : +33 (0)1 69 08 58 32 > > -- > 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 -- Michel Kern Centre de recherche Inria de Paris, Maison de la Simulation, 2 rue Simone Iff, bureau A413, Digiteo Labs, bât. 565, CEA Saclay 75012 Paris 91191 Gif-sur-Yvette Cedex tel. : +33 (0)1 80 49 42 36, tel. : +33 (0)1 69 08 58 32
