Jaekwang,
This seems to be unrelated. Did you setup the Triangulation before calling
fe.distribute_dofs()?
Best,
Daniel
Am Dienstag, 20. September 2016 17:04:02 UTC+2 schrieb JAEKWANG KIM:
>
> yes...I tried that before, but I get an error message as follow..
>
> As you mentioned, I first learn this function in step 7 tutorial.
> But the problem is that I want to integrate my vector-valued-solution to
> exact-vector-valued solution, while step 7 compares scalar-solution.
>
> Or is there any ways to compare each solution component separately? as it
> did in step-7.
>
> I am really thank you for your advice!!!!!
>
>
> An error occurred in line <235> of file
> </Users/jaekwangjk/dealii-8.4.1/source/dofs/dof_handler_policy.cc> in
> function
>
> static types::global_dof_index
> dealii::internal::DoFHandler::Policy::Implementation::distribute_dofs(const
> types::global_dof_index, const types::subdomain_id, DoFHandler<dim,
> spacedim> &) [dim = 2, spacedim = 2]
>
> The violated condition was:
>
> tria.n_levels() > 0
>
> The name and call sequence of the exception was:
>
> ExcMessage("Empty triangulation")
>
> Additional Information:
>
> Empty triangulation
>
>
> Stacktrace:
>
> -----------
>
> #0 2 libdeal_II.g.8.4.1.dylib 0x0000000104ef307c
> _ZN6dealii8internal10DoFHandler6Policy14Implementation15distribute_dofsILi2ELi2EEEjjjRNS_10DoFHandlerIXT_EXT0_EEE
>
> + 300: 2 libdeal_II.g.8.4.1.dylib 0x0000000104ef307c
> _ZN6dealii8internal10DoFHandler6Policy14Implementation15distribute_dofsILi2ELi2EEEjjjRNS_10DoFHandlerIXT_EXT0_EEE
>
>
> #1 3 libdeal_II.g.8.4.1.dylib 0x0000000104ef2d97
> _ZNK6dealii8internal10DoFHandler6Policy10SequentialILi2ELi2EE15distribute_dofsERNS_10DoFHandlerILi2ELi2EEERNS1_11NumberCacheE
>
> + 39: 3 libdeal_II.g.8.4.1.dylib 0x0000000104ef2d97
> _ZNK6dealii8internal10DoFHandler6Policy10SequentialILi2ELi2EE15distribute_dofsERNS_10DoFHandlerILi2ELi2EEERNS1_11NumberCacheE
>
>
> #2 4 libdeal_II.g.8.4.1.dylib 0x0000000104eb6797
> _ZN6dealii10DoFHandlerILi2ELi2EE15distribute_dofsERKNS_13FiniteElementILi2ELi2EEE
>
> + 135: 4 libdeal_II.g.8.4.1.dylib 0x0000000104eb6797
> _ZN6dealii10DoFHandlerILi2ELi2EE15distribute_dofsERKNS_13FiniteElementILi2ELi2EEE
>
>
> #3 5 mystokes 0x0000000101350e7d
> _ZN8MyStokes13StokesProblemILi2EE10setup_dofsEv + 397: 5 mystokes
> 0x0000000101350e7d
> _ZN8MyStokes13StokesProblemILi2EE10setup_dofsEv
>
> #4 6 mystokes 0x0000000101341a52
> _ZN8MyStokes13StokesProblemILi2EE3runEv + 386: 6 mystokes
> 0x0000000101341a52 _ZN8MyStokes13StokesProblemILi2EE3runEv
>
> #5 7 mystokes 0x0000000101340aa5 main + 69:
> 7 mystokes 0x0000000101340aa5 main
>
> #6 8 libdyld.dylib 0x00007fff95b575ad start + 1:
> 8 libdyld.dylib 0x00007fff95b575ad start
>
> #7 9 ??? 0x0000000000000001 0x0 + 1: 9
> ??? 0x0000000000000001 0x0
>
>
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