[petsc-users] Accessing non-local values of a vector

[Najeeb Ahmad]

Thank you Satish. This is very helpful.

Regards,

On Mon, Jun 18, 2018 at 7:51 PM Satish Balay <balay at mcs.anl.gov> wrote:

> You would have to use VecScatter.
>
> http://www.mcs.anl.gov/petsc/documentation/faq.html#mpi-vec-access
>
> Satish
>
> On Mon, 18 Jun 2018, Najeeb Ahmad wrote:
>
> > Hi all,
> >
> > I am a novice user and I am trying to write my first project in PETSc. In
> > my code, I need to get vector values that may be residing on other
> > processes. I noticed that VecGetValues can get values on the same
> > processor.  For instance, I need a calculation like this:
> >
> > temp = (dy(i) + dy(i + xmax));           /// xmax is length along x -
> > direction
> >
> > where dy(i + xmax) may be on another processes. What is the best way to
> > accomplish this?
> >
> > Thanks
> >
> >
>
>

-- 
*Najeeb Ahmad*


*Research and Teaching Assistant*
*PARallel and MultiCORE Computing Laboratory (ParCoreLab) *

*Computer Science and Engineering*
*Koç University, Istanbul, Turkey*
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