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

Matthew Knepley knepley at gmail.com
Mon Jun 6 02:39:09 CDT 2011

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

> Hi,
> I am working on a NVIDIA CUDA improved cg solver, with fast
> preconditioning. Since I have tested PETSC PCJACOBI with ILU(0) on each
> block I have some nice results. Unfortunately the pc is on CPU, so I try to
> port them on GPU. Now my question is, has body some material about this
> PETSC implementation?

The ILU(0) algorithm is described in Yousef Saad's book on Iterative
Methods. It is notoriously hard to parallelize.
ASM and Block-Jacobi jsut decompose the system into blocks. They are also
described in the book.


> Kind regards,
> Jürgen Dürrwang

What most experimenters take for granted before they begin their experiments
is infinitely more interesting than any results to which their experiments
-- Norbert Wiener
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