Dear all, the more KSP and PC methods are available, the more difficult it is to choose a suitable one.
I want to compute Navier-Stokes (using Finite Elements) for medium-sized Reynolds numbers (still laminar, though). I am currently using -ksp_type gmres -ksp_gmres_restart 30 -pc_type bjacobi -sub_pc_type asm -sub_pc_asm_overlap 2 -sub_sub_pc_type ilu -sub_sub_pc_factor_zeropivot 0 -sub_sub_pc_ilu_levels 1 but with a large number of CPUs (e.g. 20), no convergence is achieved. Does anyone have some suggestions for a better setting? I am using petsc-2.3.0. Best Regards, Tim -- Dr. Tim Kroeger Phone +49-421-218-7710 tim at mevis.de, tim at cevis.uni-bremen.de Fax +49-421-218-4236 MeVis Research GmbH, Universitaetsallee 29, D-28359 Bremen, Germany Amtsgericht Bremen HRB 16222 Geschaeftsfuehrer: Prof. Dr. H.-O. Peitgen
