[TeresaT]

Dear all,

I need some inspiration to conquer a post Process problem:

Goal was to sample the interface (water/air). Output, as long as it's generated, looks pretty good, but the function stops with floating point eception:

*** Process received signal ***
Signal: Floating point exception (8)
Signal code: (-6)
Failing at address: 0x3e80000204a
[ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7f72512a3f20]
[ 1] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xc7)[0x7f72512a3e97]
[ 2] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7f72512a3f20]
[ 3] /opt/openfoam6/platforms/linux64GccDPInt32Opt/lib/libsampling.so(_ZN4Foam16vtkSurfaceWriter9writeDat aIdEEvRNS_7OstreamERKNS_5FieldIT_EE+0x80)[0x7f7252fffdc0]
[ 4] /opt/openfoam6/platforms/linux64GccDPInt32Opt/lib/libsampling.so(_ZNK4Foam16vtkSurfaceWriter13writeT emplateIdEEvRKNS_8fileNameES4_RKNS_5FieldINS_6Vect orIdEEEERKNS_4ListINS_4faceEEERKNS_4wordERKNS5_IT_ EEbb+0x3c6)[0x7f7253000fb6]
[ 5] /opt/openfoam6/platforms/linux64GccDPInt32Opt/lib/libsampling.so(_ZN4Foam15sampledSurfaces12writeSur faceIdEEvRKNS_5FieldIT_EEiRKNS_4wordERKNS_8fileNam eE+0x688)[0x7f7252fc4998]
[ 6] /opt/openfoam6/platforms/linux64GccDPInt32Opt/lib/libsampling.so(_ZN4Foam15sampledSurfaces14sampleAn dWriteIdEEvRKNS_14GeometricFieldIT_NS_12fvPatchFie ldENS_7volMeshEEE+0x144)[0x7f7252fc6cd4]
[ 7] /opt/openfoam6/platforms/linux64GccDPInt32Opt/lib/libsampling.so(_ZN4Foam15sampledSurfaces14sampleAn dWriteINS_14GeometricFieldIdNS_12fvPatchFieldENS_7 volMeshEEEEEvRKNS_12IOobjectListE+0x33a)[0x7f7252fc970a]
[ 8] /opt/openfoam6/platforms/linux64GccDPInt32Opt/lib/libsampling.so(_ZN4Foam15sampledSurfaces5writeEv+0 x207)[0x7f7252fbf487]
[ 9] /opt/openfoam6/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZN4Foam15functionObjects11timeCont rol5writeEv+0x30)[0x7f725260a7e0]
[10] /opt/openfoam6/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZN4Foam18functionObjectList7execut eEv+0xe3)[0x7f72525fc2e3]
[11] interFoam(+0x4601c)[0x5620d652801c]
[12] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7)[0x7f7251286b97]
[13] interFoam(+0x53a9a)[0x5620d6535a9a]
*** End of error message ***

Happens when using the function during runtime as well as when done afterwards. Skipping the time step, i can continue until the nexttime step this happens. (For 1 case it is at timstep 47 and 66 of1000 steps, the other at 22. So very close to the start.)
At the end the goal is to wrtie out the interface much more often than the rest, but using postProcessing the calculation aborts.. wihtout it it's running.

isoCell
    {
        type            surfaces;
        libs
        (
            "libsampling.so"
        );
        writeControl    adjustableRunTime;
        writeInterval   0.00001;
        surfaceFormat  vtk;
        fields
        (
           alpha.water U p_rgh
        );
        interpolationScheme cellPointFace;
        surfaces
        (
            interface
            {
                type        isoSurfaceCell;
                isoField    alpha.water;
                isoValue    0.5;
                interpolate true;
            }
        );

So, what am I missing? Which further step would you do to determine the reasons? How come only postProcessing crashes?

Regards,
Teresa