Barry Smith a ?crit : > Dimitri, > > No, I think this is not the correct way to look at things. Load > balancing the original matrix is not neccessarily a good thing for > doing an LU factorization (in fact it is likely just to make the LU > factorization have much more fill and require much more floating > operations). > > Packages like SuperLU_dist and Mumps have their own internal ordering > routines that are specifically for getting a good ordering for doing > the parallel LU factorization, you should just have these solvers > use them (which they do automatically). > > Barry > > > On Thu, 11 Jan 2007, Dimitri Lecas wrote: > > I'am no longer talking about doing LU factorization. But use iterative method for solving a linear system, like bicg. Like in the ex10. In this example i don't understand why using MatPartitioning.
-- Dimitri Lecas