analyze preconditioned operator?

Matt Funk mafunk at
Thu Oct 9 13:22:59 CDT 2008


i am using PETSC and on top of it also SLEPC to do some matrix analysis. 
In Slepc i simply pass it the Petsc matrix to analyze it.
However, is there anyway to analyze the preconditioned matrix at all?

The only ways i can think of are either by getting the preconditioned matrix 
back out of PETSC (i.e. some sort of pointer to it if it is stored at all), 
or by Slepc applying the preconditioner (i tried to contact the developers 
but no one has responded to that question so far)? 

I looked around a little bit but i could not find anything on this.
Does anyone have experience with this?


More information about the petsc-users mailing list