Re: MatCreateMPISAIJ?

[Hong Zhang <hzhang@xxxxxxxxxxx>]

petsc supports many sparse matrix storage formats, in which
aij  for compressed sparse row format
baij for block compressed sparse row format
sbaij for symmetric block compressed sparse row format.
When block size bs=1, baij format is same as aij,
and sbaij format is same as aij without storing the
lower triangular entries.

Hong

On Wed, 8 Nov 2006 billy@xxxxxxxxxxxxx wrote:

>
> What does the block size mean?
>
> Billy.
>
> Quoting Hong Zhang <hzhang@xxxxxxxxxxx>:
>
> >
> > MatCreateMPIAIJ -> MatCreateMPISBAIJ (symmetric) with block size bs=1.
> >
> > Hong
> >
> > On Wed, 8 Nov 2006 billy@xxxxxxxxxxxxx wrote:
> >
> > >
> > > Hi,
> > >
> > >
> > > I am currently using MatCreateMPIAIJ type matrices. Is there a symmetric
> > version
> > > of this type?
> > >
> > > Like:
> > >
> > > MatCreateMPIBAIJ (non-symmetric) -> MatCreateMPISBAIJ (symmetric).
> > >
> > > MatCreateMPIAIJ (non-symmetric) -> MatCreateMPISAIJ (symmetric) ??
> > >
> > > Billy.
> > >
> > >
> >
> >
>
>
>