[petsc-users] KSP solver and Distributed arrays

Mohamad M. Nasr-Azadani mmnasr at gmail.com
Wed Dec 15 19:53:20 CST 2010


Thank you Barry and Matthew.

Mohamad


On Tue, Dec 14, 2010 at 7:14 AM, Matthew Knepley <knepley at gmail.com> wrote:

> Yes that is possible. The solver does not know about ghost nodes.
>
>    Matt
>
>
> On Mon, Dec 13, 2010 at 8:42 PM, Mohamad M. Nasr-Azadani <mmnasr at gmail.com
> > wrote:
>
>> Hi guys,
>>
>> A simple question.
>> Can I solve a linear system [A]{x} = {b} using KSP solvers using Matrix
>> and rhs, solution vectors with different number of ghost nodes (width)?
>> As an example, can it be possible to solve for
>> vector {x} DA, width=3, STAR stencil,
>> [A] DA, width=1, STAR stencil
>> {b} DA, width=1, STAR stencil
>>
>> I am suspecting that it is not possible.
>>
>> Thanks,
>> Mohamad
>>
>>
>
>
> --
> What most experimenters take for granted before they begin their
> experiments is infinitely more interesting than any results to which their
> experiments lead.
> -- Norbert Wiener
>
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