[aspect-devel] Floating Point Exception error for simple setup

[Timo Heister]

Hey Felipe,

the floating point exception feature is still a somewhat fragile
option. You can turn it off with

 cmake -D ASPECT_USE_FP_EXCEPTIONS=OFF .

in your build directory.

To improve this feature, can you tell me what compiler versions you
are using? Do you see this problem also when you run the 2d
convection-box on one processor?

Thanks,
Timo



On Wed, Mar 9, 2016 at 3:21 AM, FELIPE ORELLANA ROVIROSA
<f_orellana at berkeley.edu> wrote:
>
>  Hi all,
>
>        I am trying to run Aspect in parallel for 3D computations, and I am
> getting errors related to 'floating point exception'. I know other people in
> the community has suffered this same problem, in different situations,
> versions and machines.
>
>       For instance, I am using version 1.4.0-pre on TACC Stampede. When
> trying to run the 3D convection example, after short running times I get the
> error:
>
>
> -----------------------------------------------------------------------------
> -- This is ASPECT, the Advanced Solver for Problems in Earth's ConvecTion.
> --     . version 1.4.0-pre
> --     . running in DEBUG mode
> --     . running with 256 MPI processes
> --     . using Trilinos
> -----------------------------------------------------------------------------
>
> [c557-404.stampede.tacc.utexas.edu:mpi_rank_2][error_sighandler] Caught
> error: Floating point exception (signal 8)
> [c557-404.stampede.tacc.utexas.edu:mpi_rank_5][error_sighandler] Caught
> error: Floating point exception (signal 8)
> [c557-404.stampede.tacc.utexas.edu:mpi_rank_8][error_sighandler] Caught
> error: Floating point exception (signal 8)
> [c557-404.stampede.tacc.utexas.edu:mpi_rank_10][error_sighandler] Caught
> error: Floating point exception (signal 8)
> [c557-404.stampede.tacc.utexas.edu:mpi_rank_12][error_sighandler] Caught
> error: Floating point exception (signal 8)
> [c557-404.stampede.tacc.utexas.edu:mpi_rank_9][error_sighandler] Caught
> error: Floating point exception (signal 8)
> [c557-404.stampede.tacc.utexas.edu:mpi_rank_1][error_sighandler] Caught
> error: Floating point exception (signal 8)
> [c557-404.stampede.tacc.utexas.edu:mpi_rank_6][error_sighandler] Caught
> error: Floating point exception (signal 8)
> [c557-404.stampede.tacc.utexas.edu:mpi_rank_15][error_sighandler] Caught
> error: Floating point exception (signal 8)
> [c557-404.stampede.tacc.utexas.edu:mpi_rank_4][error_sighandler] Caught
> error: Floating point exception (signal 8)
> [c557-404.stampede.tacc.utexas.edu:mpi_rank_7][error_sighandler] Caught
> error: Floating point exception (signal 8)
> ...
>
>     Is there a vulnerability with the Aspect version I am using?
>   or the problem lies on another issue?
>
>     What would be the recommendation?
>
> I greatly appreciate your help,
> cheers,
>
> Felipe
>
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-- 
Timo Heister
http://www.math.clemson.edu/~heister/