[petsc-users] Optimized run crashes on one machine but not another

[Matthew Knepley]

On Thu, Aug 29, 2013 at 1:45 AM, Garnet Vaz <garnet.vaz at gmail.com> wrote:

> Hi Matt,
>
> I figured out what was causing the problems. I never had
> an optimized build built on my laptop before. So I did not
> run the reconfigure script but had to build from scratch.
>
> I recently changed my build script to keep only what was
> required for this project. By mistake, the --download-chaco
> was taken out. Hence, the code was running on all debug
> builds + optimized build on the desktop and crashed on
> my laptop.
>
> Once I rebuilt 3.4.2 it crashed for all builds since chaco
> was not available on any of them now. The IS of
> the partition returned here was corrupt.
> plex.c line 2503
>

Crap! Thats a bug. Thanks for finding it. I will fix it in next today.

    Matt


>     if (1) {
> #if defined(PETSC_HAVE_CHACO)
>       ierr = DMPlexPartition_Chaco(dm, numVertices, start, adjacency,
> partSection, partition);CHKERRQ(ierr);
> #endif
>     } else {
> #if defined(PETSC_HAVE_PARMETIS)
>       ierr = DMPlexPartition_ParMetis(dm, numVertices, start, adjacency,
> partSection, partition);CHKERRQ(ierr);
> #endif
>     }
> I do have parmetis installed but I do not know why it did not
> work.
>
> Since you were able to run the code it helped a lot. The
> code runs on all builds/machines now without any problems
> once chaco was downloaded.
>
> Thanks a lot for the help.
>
> Regards,
> Garnet
>
>
>
>
> On Wed, Aug 28, 2013 at 7:22 PM, Matthew Knepley <knepley at gmail.com>wrote:
>
>> On Wed, Aug 28, 2013 at 4:53 PM, Jed Brown <jedbrown at mcs.anl.gov> wrote:
>>
>>> Garnet Vaz <garnet.vaz at gmail.com> writes:
>>>
>>> > Hi Matt,
>>> >
>>> > Within gdb how can I view an IS? I tried 'call ISView(*partition,0)'
>>> > following the VecView() syntax but it causes a segmentation fault
>>> > inside gdb.
>>>
>>> That'll work if you're passing an IS and it's not already corrupt.
>>>
>>
>> Just to recap, I have run in both debug and optimized with complex, and
>> through valgrind,
>> and I get no problems on my machine (using downloaded MPICH).
>>
>> I think we will need you to narrow it down with the debugger there.
>>
>>   Thanks,
>>
>>      Matt
>>
>>
>> --
>> 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
>>
>
>
>
> --
> Regards,
> Garnet
>



-- 
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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