On Tue, 16 Mar 2010 14:12:03 -0400, Matthew Knepley <knepley at gmail.com> wrote: > You have a preconditioner which is ASM, but with a LOT of small > blocks. You do not save very much by discarding one big block, but if > you only ever form each small block, you get a lot of savings.
Unless I misunderstand you, this means that you'll be refactoring each block on every Krylov iteration. I realize it's a bit less memory, but that's going to be pretty painful. Jed
