[vivien]

Hi, everyone,

I am running a transient case with icoFoam, everything looks Ok, but I got following error messages, it looks to me that simulation is not diverged? Besides, when I change in the controlDict to use the latest time which has been stored(2.23s) as the new startTime, simulation carrys on without giving any error messages(ie. no error at time instance 2.2343689). Can somebody give suggestions?

Thanks!!

Vivien

Time = 2.2343543

Courant Number mean: 0.0053828188 max: 0.64918121
deltaT = 7.2753478e-06
DILUPBiCG: Solving for Ux, Initial residual = 5.3138552e-06, Final residual = 3.1175137e-09, No Iterations 3
DILUPBiCG: Solving for Uy, Initial residual = 4.7171651e-06, Final residual = 9.1354938e-10, No Iterations 3
DILUPBiCG: Solving for Uz, Initial residual = 7.9805167e-06, Final residual = 4.9745108e-10, No Iterations 5
GAMG: Solving for p, Initial residual = 0.00019002876, Final residual = 3.44714e-06, No Iterations 5
GAMG: Solving for p, Initial residual = 0.00067228588, Final residual = 6.0058329e-06, No Iterations 2
time step continuity errors : sum local = 1.516467e-10, global = 4.4451297e-12, cumulative = 7.695148e-11
DILUPBiCG: Solving for T, Initial residual = 1.041974e-05, Final residual = 4.729978e-09, No Iterations 1
DILUPBiCG: Solving for T, Initial residual = 2.6833676e-07, Final residual = 2.6833676e-07, No Iterations 0
ExecutionTime = 11673.61 s ClockTime = 11714 s

Time = 2.2343616

Courant Number mean: 0.0053827606 max: 0.64916911
deltaT = 7.2753478e-06
DILUPBiCG: Solving for Ux, Initial residual = 4.773095e-06, Final residual = 2.7885961e-09, No Iterations 3
DILUPBiCG: Solving for Uy, Initial residual = 4.4754794e-06, Final residual = 6.4518825e-09, No Iterations 2
DILUPBiCG: Solving for Uz, Initial residual = 7.4329129e-06, Final residual = 3.0449529e-09, No Iterations 2
GAMG: Solving for p, Initial residual = 0.00018720649, Final residual = 3.4225106e-06, No Iterations 5
GAMG: Solving for p, Initial residual = 0.00067818591, Final residual = 6.0578516e-06, No Iterations 2
time step continuity errors : sum local = 1.5187123e-10, global = -4.4411745e-12, cumulative = 7.2510306e-11
DILUPBiCG: Solving for T, Initial residual = 1.0421422e-05, Final residual = 9.3188894e-09, No Iterations 1
DILUPBiCG: Solving for T, Initial residual = 2.7852124e-07, Final residual = 2.7852124e-07, No Iterations 0
ExecutionTime = 11674.1 s ClockTime = 11715 s

Time = 2.2343689

Courant Number mean: 0.0053826524 max: 0.64916023
deltaT = 7.2753478e-06
DILUPBiCG: Solving for Ux, Initial residual = 5.3133965e-06, Final residual = 3.1193758e-09, No Iterations 3
DILUPBiCG: Solving for Uy, Initial residual = 4.71639e-06, Final residual = 9.1425432e-10, No Iterations 3
[12] #0 Foam::error:rintStack(Foam::Ostream&) in "/vol/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM.so"
[12] #1 Foam::sigFpe::sigFpeHandler(int) in "/vol/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM.so"
[12] #2 __restore_rt at sigaction.c:0
[12] #3 void Foam:rocessorLduInterface::compressedSend<double >(Foam::Pstream::commsTypes, Foam::UList<double> const&) const in "/vol/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libfiniteVolume.so"
[12] #4 Foam:rocessorFvPatchField<Foam::Vector<double> >::initInterfaceMatrixUpdate(Foam::Field<double> const&, Foam::Field<double>&, Foam::lduMatrix const&, Foam::Field<double> const&, unsigned char, Foam::Pstream::commsTypes) const in "/vol/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libfiniteVolume.so"
[14] #0 Foam::error:rintStack(Foam::Ostream&) in "/vol/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM.so"
[14] #1 Foam::sigFpe::sigFpeHandler(int) in "/vol/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM.so"
[14] #2 __restore_rt at sigaction.c:0
[14] #3 void Foam:rocessorLduInterface::compressedSend<double >(Foam::Pstream::commsTypes, Foam::UList<double> const&) const in "/vol/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libfiniteVolume.so"
[14] #4 Foam:rocessorFvPatchField<Foam::Vector<double> >::initInterfaceMatrixUpdate(Foam::Field<double> const&, Foam::Field<double>&, Foam::lduMatrix const&, Foam::Field<double> const&, unsigned char, Foam::Pstream::commsTypes) const in "/vol/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libfiniteVolume.so"
[14] #5 Foam::lduMatrix::initMatrixInterfaces(Foam::FieldF ield<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, Foam::Field<double> const&, Foam::Field<double>&, unsigned char) const in "/vol/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM.so"
[14] #6 Foam::lduMatrix::Tmul(Foam::Field<double>&, Foam::tmp<Foam::Field<double> > const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, unsigned char) const in "/vol/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM.so"
[14] #7 Foam::PBiCG::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const in "/vol/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM.so"
[14] #8 Foam::fvMatrix<Foam::Vector<double> >::solve(Foam::Istream&) in "/home/durant/OpenFOAM/dep16039-1.5/applications/bin/linux64GccDPOpt/caFoam"
[14] #9 main in "/home/durant/OpenFOAM/dep16039-1.5/applications/bin/linux64GccDPOpt/caFoam"
[14] #10 __libc_start_main in "/lib64/libc.so.6"
[14] #11 Foam::regIOobject::readIfModified() in "/home/durant/OpenFOAM/dep16039-1.5/applications/bin/linux64GccDPOpt/caFoam"
[13] #0 Foam::error:rintStack(Foam::Ostream&) in "/vol/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM.so"
[13] #1 Foam::sigFpe::sigFpeHandler(int) in "/vol/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM.so"
[13] #2 __restore_rt at sigaction.c:0
[13] #3 void Foam:rocessorLduInterface::compressedSend<double >(Foam::Pstream::commsTypes, Foam::UList<double> const&) const in "/vol/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libfiniteVolume.so"
[13] #4 Foam:rocessorFvPatchField<Foam::Vector<double> >::initInterfaceMatrixUpdate(Foam::Field<double> const&, Foam::Field<double>&, Foam::lduMatrix const&, Foam::Field<double> const&, unsigned char, Foam::Pstream::commsTypes) const in "/vol/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libfiniteVolume.so"
[13] #5 Foam::lduMatrix::initMatrixInterfaces(Foam::FieldF ield<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, Foam::Field<double> const&, Foam::Field<double>&, unsigned char) const in "/vol/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM.so"
[13] #6 Foam::lduMatrix::Tmul(Foam::Field<double>&, Foam::tmp<Foam::Field<double> > const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, unsigned char) const in "/vol/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM.so"
[13] #7 Foam::PBiCG::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const in "/vol/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM.so"
[13] #8 Foam::fvMatrix<Foam::Vector<double> >::solve(Foam::Istream&) in "/home/durant/OpenFOAM/dep16039-1.5/applications/bin/linux64GccDPOpt/caFoam"
[13] #9 main in "/home/durant/OpenFOAM/dep16039-1.5/applications/bin/linux64GccDPOpt/caFoam"
[13] #10 __libc_start_main in "/lib64/libc.so.6"
[13] #11 Foam::regIOobject::readIfModified()GAMMA: signal 15: process instance 13 aborting on node ls0185...
[12] #5 Foam::lduMatrix::initMatrixInterfaces(Foam::FieldF ield<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, Foam::Field<double> const&, Foam::Field<double>&, unsigned char) const in "/vol/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM.so"
[12] #6 Foam::lduMatrix::Tmul(Foam::Field<double>&, Foam::tmp<Foam::Field<double> > const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, unsigned char) const in "/vol/OpenFOAM/OpenFOAM-1.5/lib/linux64GccDPOpt/libOpenFOAM.so"
[12] #7 Foam::PBiCG::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const in "

[vivien]

Can somebody help me?

Thanks in advance!

Vivien

[l_r_mcglashan]

Seems like a similar error to one I had before. Try:

http://www.cfd-online.com/Forums/ope...-parallel.html

Those are very large times and very small time steps!

[juho]

Hi Vivien,

To me it looks like a floating point exception ie. a division by zero or something like that.

"12] #1 Foam::sigFpe::sigFpeHandler(int) in"
Fpe = Floating point exception

To replicate the problem on restart it is important that you save the results in binary format. You can set the write format in the system/controlDict file by setting it ascii or binary. I't ascii by default I believe.

--Juho