[petsc-users] Global numbering obtained via ISPartitioningToNumbering is inconsistent with the partitioning indexset

[Mohammad Mirzadeh]

Thanks Jed for the advice. Actually I looked at the code and I think this
was the only place I had made this implicit assumption (but the most
important place). As a matter of fact, I make my vectors layout according
to the AO that I get from partitioning. I think my main mistake was that I
had assumed the partitioning uses the same ordering as the PETSc ordering.

The code seems to run correctly now :)





On Mon, Apr 9, 2012 at 5:09 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote:

> On Mon, Apr 9, 2012 at 17:25, Mohammad Mirzadeh <mirzadeh at gmail.com>wrote:
>
>> Just to make sure though, is my assumption on the natural ordering of
>> PETSc correct?
>
>
> Yes, but please don't write code that depends on that. It's plenty easy to
> query the local size or the sizes/starts of other processes.
>
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