[petsc-users] Scatter context for MatMult

Jed Brown jedbrown at mcs.anl.gov
Fri Aug 17 16:04:17 CDT 2012

On Fri, Aug 17, 2012 at 4:00 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:

> MatGetCommunicationStructs() returns exactly back the VecScatter that gets
> all those ghost points.
> It is hardwired for MPIAIJ matrices; which is ok for you.
> PETSc developers need to fix this and either add MPIAIJ in the name or
> make it more general for other formats. Yucky stuff that should not have
> been exposed in exactly this way.

Yikes, it's type signature depends on PETSC_USE_CTABLE.
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