[petsc-users] PCGASMSetLocalSubdomains

Hui Zhang mike.hui.zhang at hotmail.com
Tue May 15 11:15:32 CDT 2012

On May 15, 2012, at 6:12 PM, Jed Brown wrote:

> On Tue, May 15, 2012 at 10:05 AM, Hui Zhang <mike.hui.zhang at hotmail.com> wrote:
> I am writing some modified ASM method. In construction of energy minimization coarse basis,
> I need to solve individual subdomain problems and not to sum them, just to extend them separately.
> I wonder whether you guys have ever done this coarse basis.
> How are these subdomain problems defined? They are very often different (in terms of overlap or boundary conditions) than are used in the smoother

With overlap and modified boundary conditions.

> You might want to look at PCEXOTIC (http://www.mcs.anl.gov/petsc/petsc-dev/docs/manualpages/PC/PCEXOTIC.html) which is a basic implementation of a two-level DD method of this type.

Yes, this is interesting :) Thanks!
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