[petsc-users] Unexplained memory leaks

[baikadi pranay]

Thank you Mark and Matthew. I will try to use the suppression file to hide
the leaks.

On a different note, I see a similar error related to MPI when I couple my
poisson solver with the schrodinger solver (written with SLEPc). I am
attaching a screenshot of the error. I was wondering if you could comment
on this issue as well.

Please let me know if you need any further information from me.

Thank you.

Best Regards,
Pranay.
ᐧ

On Fri, Aug 28, 2020 at 5:48 AM Mark Lohry <mlohry at gmail.com> wrote:

> Looking through my own valgrind I saw OpenMPI mentions on their faq they
> provide a suppression file to hide their known leaks:
> https://www.open-mpi.org/faq/?category=debugging#valgrind_clean
>
> mpirun -np 2 valgrind --suppressions=$PREFIX/share/openmpi/openmpi-valgrind.supp
>
>
>
> On Fri, Aug 28, 2020 at 7:41 AM Matthew Knepley <knepley at gmail.com> wrote:
>
>> OpenMPI leaks memory at the end. As you can see it is small, so they are
>> unmotivated to fix that.
>>
>>   Thanks,
>>
>>      Matt
>>
>> On Fri, Aug 28, 2020 at 4:31 AM baikadi pranay <pranayreddy865 at gmail.com>
>> wrote:
>>
>>> Hi,
>>> I am building a 2D solver for the semiconductor Poisson-Boltzmann
>>> equation. I detected a memory leak when running the program using valgrind
>>> but I am unable to solve this issue as there are no signs in the valgrind
>>> output indicating that the source of the error is in the modules I have
>>> written. I am attaching you a text file containing the valgrind output.
>>>
>>> I have seen that a similar question was asked earlier (found here
>>> <https://lists.mcs.anl.gov/pipermail/petsc-users/2010-October/007132.html>)
>>> but I could not find a final solution to that problem. Could you let me
>>> know the source of the problem?
>>>
>>> Please let me know if you need any further information.
>>>
>>> Thank you,
>>> Pranay.
>>> ᐧ
>>>
>>
>>
>> --
>> 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/>
>>
>
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