[petsc-users] Some papers for additive schwarz and blocked jacobi?

[Jed Brown]

2011/6/6 Dürrwang, Jürgen <Juergen.Duerrwang at iosb.fraunhofer.de>

> Thanks,
>
>
>
> for help, I have read both algorithms in Saad. My main problem in
> understanding of the procedure is how the decompose the domain. At the
> moment I decompose with jacobi block method(without overlapping) and I run
> on each block LIU(0) in parallel after that I put each solution together for
> an CG solver. With that my iteration number raises instead of break down, so
> there must be something wrong J.
>
>
>
> Perhaps you know the order of the methods? First Jacobi-block then
> additive-Schwarz then ILU(0) and at least cg loop, or is it another order?
>

I don't understand what you're asking. Have you looked at some PETSc
examples? You should be able to do this stuff with run-time options. If you
are trying something that doesn't work, send the options you ran with and
the output. Running with -ksp_view is helpful to see what method is being
used.
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