Devanash,
frame #7: 0x0000000105f4de3a
libdeal_II.g.9.6.0.dylib`dealii::deal_II_exceptions::internals::abort(dealii::ExceptionBase
const&) + 10
frame #8: 0x0000000100516d39 libdeal_II.g.9.6.0.dylib`void
dealii::deal_II_exceptions::internals::issue_error_noreturn<dealii::StandardExceptions::ExcNotImplemented>(dealii::deal_II_exceptions::internals::ExceptionHandling,
char const*, int, char const*, char const*, char const*,
dealii::StandardExceptions::ExcNotImplemented) + 201
tells you that you are trying to use some functionality that is not
yet implemented. The error message you get when running the code in
Debug mode should be much more descriptive than that stack trace.
Best regards,
Daniel
On Mon, Mar 17, 2025 at 1:23 PM Devansh Sonigra
<devans...@tifrbng.res.in> wrote:
>
> Hi Daniel,
>
> Below I have attached a text file which contains the backtrace message. It
> looks like the error originates from
> dealii::KellyErrorEstimator<2,2>::estimate and could involve
> dealii::hp::FESubfaceValues and QProjector. Could this be related to the way
> the triangulated mesh is handled in the estimator?
>
> Do you have any suggestions on how to debug this further?
>
> Thanks,
> Devansh.
> On Monday, 17 March 2025 at 21:37:02 UTC+5:30 d.arnd...@gmail.com wrote:
>>
>> Devanash,
>>
>> What does a backtrace look like when running in a debugger?
>>
>> Best,
>> Daniel
>>
>> On Mon, Mar 17, 2025 at 9:42 AM Devansh Sonigra
>> <deva...@tifrbng.res.in> wrote:
>> >
>> > Hello everyone,
>> >
>> > I am working with deal.II and encountering an issue with
>> > KellyErrorEstimator. I started with a code that solves the Laplace
>> > equation in a non-convex domain using adaptive refinement. The original
>> > code was designed for rectangular mesh, but I updated it to work with a
>> > triangular mesh. While KellyErrorEstimator runs fine on the initial mesh
>> > and first iteration of refinement, the code breaks on the second
>> > iteration, and the error seems to originate from KellyErrorEstimator.
>> >
>> > Has anyone faced a similar issue or have any suggestions on what might be
>> > causing this? Any insights on debugging would be greatly appreciated.
>> >
>> > Thanks in advance!
>> >
>> > Best,
>> > Devansh
>> >
>> > Output:
>> >
>> > Number of active cells: 2400
>> >
>> > Total number of cells: 2400
>> >
>> > Number of degrees of freedom: 1281
>> >
>> > 35 CG iterations needed to obtain convergence.
>> >
>> > Computing error norms
>> >
>> > Refining grid based on error estimator
>> >
>> > Debug message - Before running KellyErrorEstimator
>> >
>> > Debug message - After running KellyErrorEstimator
>> >
>> > Number of active cells: 2634
>> >
>> > Total number of cells: 2712
>> >
>> > Number of degrees of freedom: 1414
>> >
>> > 53 CG iterations needed to obtain convergence.
>> >
>> > Computing error norms
>> >
>> > Refining grid based on error estimator
>> >
>> > Debug message - Before running KellyErrorEstimator
>> >
>> > Segmentation fault: 11
>> >
>> >
>> > --
>> > The deal.II project is located at http://www.dealii.org/
>> > For mailing list/forum options, see
>> > https://groups.google.com/d/forum/dealii?hl=en
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>
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