[petsc-users] scattering strategies

Wienand Drenth w.drenth at gmail.com
Mon Oct 17 15:44:33 CDT 2011

On Mon, Oct 17, 2011 at 10:22 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> On Mon, Oct 17, 2011 at 15:17, Wienand Drenth <w.drenth at gmail.com> wrote:
> Simple solution:
> Make a DMDA to represent your multi-dimensional layout, put your array
> values into the Vec you get from the DM, and call VecView(). It will do a
> parallel write and your vector will end up in the natural ordering. You can
> VecLoad() it later or read it with other software.

Hello Jed,
Thanks for the quick response. I haven't thought about this DMDA approach
and it sounds really nice. With natural ordering, I assume you mean what I
call Petsc ordering (in any case different from the ordering imposed by the


Wienand Drenth PhD
Eindhoven, the Netherlands
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