[petsc-users] To store the RHS vector b of KSPSolve.

[Matthew Knepley]

On Tue, Jan 17, 2012 at 2:51 PM, Xuefei (Rebecca) Yuan <xyuan at lbl.gov>wrote:

> Hello all,
>
> I have a piece of code that need to store the RHS vector b of the ksp
> object via vecview.
>
> However, the routine is like:
>
>
>        ierr = DMMGSetSNESLocal(dmmg, FormFunctionLocal,
> FormJacobianLocal,0,0);CHKERRQ(ierr);
>        ierr = DMMGSolve(dmmg);CHKERRQ(ierr);
>
> The rhs evaluation is in FormFunctionLocal(), how could store the rhs
> vector b?
>

1) In your nonlinear problem, what do you mean by b?

2) Don't use DMMG, use petsc-dev with regular SNES and SNESSetDM()

   Matt


> Thanks very much!
>
> Cheers,
>
> Rebecca
>
>
>
>


-- 
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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