[petsc-users] VecGetValues get vector values at arbitrary locations

[Panruo Wu]

Thank you Zhengyong!

That's very useful.

Panruo

On Fri, Aug 17, 2012 at 11:16 AM, RenZhengYong <renzhengyong at gmail.com>wrote:

> Dear  Wu,
>
> This might help:
>
> http://www.mcs.anl.gov/petsc/documentation/faq.html#mpi-vec-to-seq-vec
> How do I collect all the values from a parallel PETSc vector into a
> sequential vector on each processor?
> How do I collect all the values from a parallel PETSc vector into a vector
> on the zeroth processor?
> Regards,
> Zhengyong
>
>
> On Fri, Aug 17, 2012 at 7:13 PM, Panruo Wu <pwu at mymail.mines.edu> wrote:
>
>> Dear PetSc developers and users,
>>
>> I want to access a Petsc Vec v at index n whose value
>> is not necessarily stored in the same processor.
>> I noted that the current VecGetValues cannot do that.  Do you have
>> any suggestions on how I can access v(n) from arbitrary
>> processors(in the same communicator of course)?
>>
>> Thanks,
>>
>> best wishes,
>> Panruo Wu
>>
>
>
>
> --
> Zhengyong Ren
> AUG Group, Institute of Geophysics
> Department of Geosciences, ETH Zurich
> NO H 47 Sonneggstrasse 5
> CH-8092, Zürich, Switzerland
> Tel: +41 44 633 37561
> e-mail: zhengyong.ren at aug.ig.erdw.ethz.ch
> Gmail: renzhengyong at gmail.com
>
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