CFD Online Discussion Forums - Floating point exception (8)

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Floating point exception (8)

Hello!
I'm trying to run a simulation with the pimpleFoam solver but even if I change the time step or the max Courant number, it always stops at the 9th iteration with a long message, mentioning 'floating point exeption (8)'.
I don't understand what's the problem. Here's the message:

Code:

[1] #0  Foam::error::printStack(Foam::Ostream&) in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so

[1] #1  Foam::sigFpe::sigHandler(int) in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so

[1] #2  ? in /lib/x86_64-linux-gnu/libc.so.6

[1] #3  ? in /usr/lib/x86_64-linux-gnu/openmpi/lib/openmpi3/mca_op_avx.so

[1] #4  ? in /lib/x86_64-linux-gnu/libmpi.so.40

[1] #5  ompi_coll_base_allreduce_intra_recursivedoubling in /lib/x86_64-linux-gnu/libmpi.so.40

[1] #6  ompi_coll_tuned_allreduce_intra_dec_fixed in /usr/lib/x86_64-linux-gnu/openmpi/lib/openmpi3/mca_coll_tuned.so

[1] #7  PMPI_Allreduce in /lib/x86_64-linux-gnu/libmpi.so.40

[1] #8  ? in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/sys-openmpi/libPstream.so

[1] #9  Foam::GAMGSolver::scale(Foam::Field<double>&, Foam::Field<double>&, Foam::lduMatrix const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, Foam::Field<double> const&, unsigned char) const in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so

[1] #10  Foam::GAMGSolver::Vcycle(Foam::PtrList<Foam::lduMatrix::smoother> const&, Foam::Field<double>&, Foam::Field<double> const&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::PtrList<Foam::Field<double> >&, Foam::PtrList<Foam::Field<double> >&, unsigned char) const in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so

[1] #11  Foam::GAMGSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so

[1] #12  Foam::fvMatrix<double>::solveSegregated(Foam::dictionary const&) in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfiniteVolume.so

[1] #13  ? in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfiniteVolume.so

[1] #14  Foam::fvMesh::solve(Foam::fvMatrix<double>&, Foam::dictionary const&) const in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfiniteVolume.so

[1] #15  ? in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/bin/pimpleFoam

[1] #16  ? in /lib/x86_64-linux-gnu/libc.so.6

[1] #17  __libc_start_main in /lib/x86_64-linux-gnu/libc.so.6

[1] #18  ? in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/bin/pimpleFoam

[Francesca:08630] *** Process received signal ***

[Francesca:08630] Signal: Floating point exception (8)

[Francesca:08630] Signal code:  (-6)

[Francesca:08630] Failing at address: 0x3e8000021b6

[Francesca:08630] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x42520)[0x7f80209ff520]

[Francesca:08630] [ 1] /lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x12c)[0x7f8020a539fc]

[Francesca:08630] [ 2] /lib/x86_64-linux-gnu/libc.so.6(raise+0x16)[0x7f80209ff476]

[Francesca:08630] [ 3] /lib/x86_64-linux-gnu/libc.so.6(+0x42520)[0x7f80209ff520]

[Francesca:08630] [ 4] /usr/lib/x86_64-linux-gnu/openmpi/lib/openmpi3/mca_op_avx.so(+0x40b5)[0x7f801c0eb0b5]

[Francesca:08630] [ 5] /lib/x86_64-linux-gnu/libmpi.so.40(+0x33fb9)[0x7f801ee4cfb9]

[Francesca:08630] [ 6] /lib/x86_64-linux-gnu/libmpi.so.40(ompi_coll_base_allreduce_intra_recursivedoubling+0x6a8)[0x7f801eec3778]

[Francesca:08630] [ 7] /usr/lib/x86_64-linux-gnu/openmpi/lib/openmpi3/mca_coll_tuned.so(ompi_coll_tuned_allreduce_intra_dec_fixed+0x4f)[0x7f8016a9529f]

[Francesca:08630] [ 8] /lib/x86_64-linux-gnu/libmpi.so.40(PMPI_Allreduce+0x133)[0x7f801ee7c553]

[Francesca:08630] [ 9] /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/sys-openmpi/libPstream.so(+0x12972)[0x7f80209af972]

[Francesca:08630] [10] /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZNK4Foam10GAMGSolver5scaleERNS_5FieldIdEES3_RKNS_9lduMatrixERKNS_10FieldFieldIS1_dEERKNS_8UPtrListIKNS_17lduInterfaceFieldEEERKS2_h+0x148)[0x7f8021369328]

[Francesca:08630] [11] /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZNK4Foam10GAMGSolver6VcycleERKNS_7PtrListINS_9lduMatrix8smootherEEERNS_5FieldIdEERKS8_S9_S9_S9_S9_S9_RNS1_IS8_EESD_h+0x778)[0x7f802136db58]

[Francesca:08630] [12] /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZNK4Foam10GAMGSolver5solveERNS_5FieldIdEERKS2_h+0x499)[0x7f802136e989]

[Francesca:08630] [13] /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfiniteVolume.so(_ZN4Foam8fvMatrixIdE15solveSegregatedERKNS_10dictionaryE+0x463)[0x7f8023a538f3]

[Francesca:08630] [14] /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfiniteVolume.so(+0x4c769e)[0x7f802360769e]

[Francesca:08630] [15] /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfiniteVolume.so(_ZNK4Foam6fvMesh5solveERNS_8fvMatrixIdEERKNS_10dictionaryE+0x28)[0x7f80235f6f08]

[Francesca:08630] [16] pimpleFoam(+0x1cc39)[0x55dfad65bc39]

[Francesca:08630] [17] /lib/x86_64-linux-gnu/libc.so.6(+0x29d90)[0x7f80209e6d90]

[Francesca:08630] [18] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x80)[0x7f80209e6e40]

[Francesca:08630] [19] pimpleFoam(+0x23b75)[0x55dfad662b75]

[Francesca:08630] *** End of error message ***

Could someone help me?
Thanks!

Quote:

Originally Posted by francedisab (Post 865349)

Code:

[1] #0  Foam::error::printStack(Foam::Ostream&) in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so

[1] #1  Foam::sigFpe::sigHandler(int) in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so

[1] #2  ? in /lib/x86_64-linux-gnu/libc.so.6

[1] #3  ? in /usr/lib/x86_64-linux-gnu/openmpi/lib/openmpi3/mca_op_avx.so

[1] #4  ? in /lib/x86_64-linux-gnu/libmpi.so.40

[1] #5  ompi_coll_base_allreduce_intra_recursivedoubling in /lib/x86_64-linux-gnu/libmpi.so.40

[1] #6  ompi_coll_tuned_allreduce_intra_dec_fixed in /usr/lib/x86_64-linux-gnu/openmpi/lib/openmpi3/mca_coll_tuned.so

[1] #7  PMPI_Allreduce in /lib/x86_64-linux-gnu/libmpi.so.40

[1] #8  ? in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/sys-openmpi/libPstream.so

[1] #9  Foam::GAMGSolver::scale(Foam::Field<double>&, Foam::Field<double>&, Foam::lduMatrix const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, Foam::Field<double> const&, unsigned char) const in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so

[1] #10  Foam::GAMGSolver::Vcycle(Foam::PtrList<Foam::lduMatrix::smoother> const&, Foam::Field<double>&, Foam::Field<double> const&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::PtrList<Foam::Field<double> >&, Foam::PtrList<Foam::Field<double> >&, unsigned char) const in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so

[1] #11  Foam::GAMGSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so

[1] #12  Foam::fvMatrix<double>::solveSegregated(Foam::dictionary const&) in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfiniteVolume.so

[1] #13  ? in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfiniteVolume.so

[1] #14  Foam::fvMesh::solve(Foam::fvMatrix<double>&, Foam::dictionary const&) const in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfiniteVolume.so

[1] #15  ? in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/bin/pimpleFoam

[1] #16  ? in /lib/x86_64-linux-gnu/libc.so.6

[1] #17  __libc_start_main in /lib/x86_64-linux-gnu/libc.so.6

[1] #18  ? in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/bin/pimpleFoam

[Francesca:08630] *** Process received signal ***

[Francesca:08630] Signal: Floating point exception (8)

[Francesca:08630] Signal code:  (-6)

[Francesca:08630] Failing at address: 0x3e8000021b6

[Francesca:08630] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x42520)[0x7f80209ff520]

[Francesca:08630] [ 1] /lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x12c)[0x7f8020a539fc]

[Francesca:08630] [ 2] /lib/x86_64-linux-gnu/libc.so.6(raise+0x16)[0x7f80209ff476]

[Francesca:08630] [ 3] /lib/x86_64-linux-gnu/libc.so.6(+0x42520)[0x7f80209ff520]

[Francesca:08630] [ 4] /usr/lib/x86_64-linux-gnu/openmpi/lib/openmpi3/mca_op_avx.so(+0x40b5)[0x7f801c0eb0b5]

[Francesca:08630] [ 5] /lib/x86_64-linux-gnu/libmpi.so.40(+0x33fb9)[0x7f801ee4cfb9]

[Francesca:08630] [ 6] /lib/x86_64-linux-gnu/libmpi.so.40(ompi_coll_base_allreduce_intra_recursivedoubling+0x6a8)[0x7f801eec3778]

[Francesca:08630] [ 7] /usr/lib/x86_64-linux-gnu/openmpi/lib/openmpi3/mca_coll_tuned.so(ompi_coll_tuned_allreduce_intra_dec_fixed+0x4f)[0x7f8016a9529f]

[Francesca:08630] [ 8] /lib/x86_64-linux-gnu/libmpi.so.40(PMPI_Allreduce+0x133)[0x7f801ee7c553]

[Francesca:08630] [ 9] /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/sys-openmpi/libPstream.so(+0x12972)[0x7f80209af972]

[Francesca:08630] [10] /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZNK4Foam10GAMGSolver5scaleERNS_5FieldIdEES3_RKNS_9lduMatrixERKNS_10FieldFieldIS1_dEERKNS_8UPtrListIKNS_17lduInterfaceFieldEEERKS2_h+0x148)[0x7f8021369328]

[Francesca:08630] [11] /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZNK4Foam10GAMGSolver6VcycleERKNS_7PtrListINS_9lduMatrix8smootherEEERNS_5FieldIdEERKS8_S9_S9_S9_S9_S9_RNS1_IS8_EESD_h+0x778)[0x7f802136db58]

[Francesca:08630] [12] /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZNK4Foam10GAMGSolver5solveERNS_5FieldIdEERKS2_h+0x499)[0x7f802136e989]

[Francesca:08630] [13] /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfiniteVolume.so(_ZN4Foam8fvMatrixIdE15solveSegregatedERKNS_10dictionaryE+0x463)[0x7f8023a538f3]

[Francesca:08630] [14] /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfiniteVolume.so(+0x4c769e)[0x7f802360769e]

[Francesca:08630] [15] /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfiniteVolume.so(_ZNK4Foam6fvMesh5solveERNS_8fvMatrixIdEERKNS_10dictionaryE+0x28)[0x7f80235f6f08]

[Francesca:08630] [16] pimpleFoam(+0x1cc39)[0x55dfad65bc39]

[Francesca:08630] [17] /lib/x86_64-linux-gnu/libc.so.6(+0x29d90)[0x7f80209e6d90]

[Francesca:08630] [18] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x80)[0x7f80209e6e40]

[Francesca:08630] [19] pimpleFoam(+0x23b75)[0x55dfad662b75]

[Francesca:08630] *** End of error message ***

Could someone help me?
Thanks!

Hi I am facing a similar issue. I am modelling Giesekus multimode Turbulence model and simulation is running for few time steps and then I am getting Floating point error. Did you find a solutionn or can someone Resolve this

No, I still don't know the solution. Hope someone can help us

I think the problem should be the definition of the courant number in controlDict. Try to change it according to your mesh and time step and see if it works!

Regards,
Francesca