[petsc-users] VecScatter in 'add' mode?

[Matthew Knepley]

On Wed, Sep 28, 2011 at 3:54 PM, Hui Zhang <mike.hui.zhang at hotmail.com>wrote:

> Hi all,
>
> When using
>
> PetscErrorCode  VecScatterCreate(Vec xin,IS ix,Vec yin,IS iy,VecScatter *newctx)
>
> I want to add those values of xin to the original values of yin.
>
> Is there a way to do this without copy of yin?
>
> I am not sure what you mean here. Do you want xin == yin?

  Matt


> Thanks!
>
> Hui
>
> --
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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