Dear Tims, The problem is how to solve more accuretly the local problem in ASM. You can also use KSP to solve local problem. I think you can look how to do it with PCASMGetSubKSP(). Best Regards, Guy
> Dear gaatenek > > On Mon, 23 Jul 2007, gaatenek at irisa.fr wrote: > >> Do you monitoring the convergence? Try it a see if you have stagnation >> in >> your convergence. > > Yes, I monitor it, but that doesn't seem to give me any helpful > information -- except that it stagnates of course. > >> However you can try this setting, >> -ksp_type gmres >> -ksp_gmres_restart 30 >> -pc_type asm >> -pc_asm_overlap 2 >> -sub_pc_type ilu >> -sub_pc_factor_zeropivot 0 >> -sub_pc_ilu_levels 3 > > Thank you, I tried it, and it worked well for a test case. However, > for the real application, the PC eats up all my memory (even in cases > where my former setting did work). > > Any hints (except buying a larger computer)? > > Might some sub_ksp method help? > > 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 > >
