In place ILU(0) factorization

[Hong Zhang]

Laslo,

We figured out a way to implement ILU(0) with reordering
without allocating workspace.
We'll add this support later. I'll let you know when
it is done.

Thanks for your request that help us to make petsc
better.

Hong

On Fri, 4 Aug 2006, Laslo Tibor Diosady wrote:

> Hong,
>
>
> > The space required remains the same, but
> > the row-compressed matrix format
> > for the factor will be changed with the
> > reordering.
> > To store the new format over the
> > existing memory, temp space has to be allocated during
> > implementation. Thus replacing the original memory with
> > newly allocated space would make implementation easier.
> >
>
> I guess this depends upon the implementation of the ILU(0) factorization
> for the AIJ or BAIJ formats, which  I didn't (nor  do I ever really want
> to) look into.
>
> Thanks for the help,
>
> Laslo
>
>