[petsc-users] Bug report VecNorm

[Matthew Knepley]

On Sun, Dec 10, 2023 at 12:57 PM Matthew Knepley <knepley at gmail.com> wrote:

> On Sun, Dec 10, 2023 at 12:54 PM Matthew Knepley <knepley at gmail.com>
> wrote:
>
>> On Sun, Dec 10, 2023 at 2:41 AM Stephan Köhler <
>> stephan.koehler at math.tu-freiberg.de> wrote:
>>
>>> Dear PETSc/Tao team,
>>>
>>> there is a bug in the voector interface:  In the function
>>> VecNorm, see, eg.
>>> https://petsc.org/release/src/vec/vec/interface/rvector.c.html#VecNorm
>>> line 197 the check for consistency in line 214 is done on the wrong
>>> communicator.  The  communicator should be PETSC_COMM_SELF.
>>> Otherwise the program may hang when PetscCheck is executed.
>>>
>>> Please find a minimal example attached.
>>>
>>
>> This is entirely right. I will fix it.
>>
>
> Here is the MR.
>

https://gitlab.com/petsc/petsc/-/merge_requests/7102

  Thanks,

    Matt


>   Thanks,
>
>     Matt
>
>
>>   Thanks,
>>
>>      Matt
>>
>>
>>>
>>>
>>> Kind regards,
>>> Stephan Köhler
>>>
>>> --
>>> Stephan Köhler
>>> TU Bergakademie Freiberg
>>> Institut für numerische Mathematik und Optimierung
>>>
>>> Akademiestraße 6
>>> 09599 Freiberg
>>> Gebäudeteil Mittelbau, Zimmer 2.07
>>>
>>> Telefon: +49 (0)3731 39-3188 (Büro)
>>>
>>>
>>
>> --
>> 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
>>
>> https://www.cse.buffalo.edu/~knepley/
>> <http://www.cse.buffalo.edu/~knepley/>
>>
>
>
> --
> 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
>
> https://www.cse.buffalo.edu/~knepley/
> <http://www.cse.buffalo.edu/~knepley/>
>


-- 
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

https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20231210/deada490/attachment.html>