[petsc-users] Bug report VecNorm

[Matthew Knepley]

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.

  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/>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20231210/9b0bd586/attachment-0001.html>