KSPSolve(), multiple rhs and preconditioner

Matthew Knepley knepley at gmail.com
Thu Mar 26 06:49:02 CDT 2009

On Thu, Mar 26, 2009 at 1:03 AM, Yujie <recrusader at gmail.com> wrote:

> Hi, PETSc developers
> I am wondering what the difference is when iterative preconditioners (such
> as ILU, sparse approximation inverse and so on) are used in single and
> multiple rhs using KSPSolve().
> In multiple rhs case, the preconditioners are made to each rhs? Thanks a
> lot.

Yes, multiple rhs is just a way of saying multiple, simultaneous solves.


> Regards,
> Yujie
What most experimenters take for granted before they begin their experiments
is infinitely more interesting than any results to which their experiments
-- Norbert Wiener
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