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[hetzel.devel@xxxxxx]

Hello everyone,
I get a problem with my solver.
I'm using the LU or alternative the GMRES solver, but by solving my System, I always get the following message from Petsc:

[0]PETSC ERROR: MatLUFactorNumeric_SeqAIJ() line 516 in src/mat/impls/aij/seq/aijfact.c
[0]PETSC ERROR: Detected zero pivot in LU factorization
see http://www.mcs.anl.gov/petsc/petsc-as/documentation/troubleshooting.html#ZeroPivot!
[0]PETSC ERROR: Zero pivot row 2950 value 4.17812e-13 tolerance 1e-12 * rs 0.450719!
[0]PETSC ERROR: MatLUFactorNumeric() line 1994 in src/mat/interface/matrix.c
[0]PETSC ERROR: PCSetUp_ILU() line 798 in src/ksp/pc/impls/factor/ilu/ilu.c
[0]PETSC ERROR: PCSetUp() line 798 in src/ksp/pc/interface/precon.c
[0]PETSC ERROR: KSPSetUp() line 234 in src/ksp/ksp/interface/itfunc.c
[0]PETSC ERROR: KSPSolve() line 332 in src/ksp/ksp/interface/itfunc.c

Is there an option for the solver to set the tolerance?

/Haiko
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