Hi, I am getting the below error with fgmres. I was wondering how to start debugging the problem. All the values in the matrix and rhs seem fine. Any suggestions are very welcome.
Best regards, Dominik ||b|| = 3.102831e-05 Starting KSPSolve... 0 KSP Residual norm 2.071556923444e-05 [0]PETSC ERROR: --------------------- Error Message ------------------------------------ [0]PETSC ERROR: Floating point exception! [0]PETSC ERROR: Infinite or not-a-number generated in norm! [0]PETSC ERROR: ------------------------------------------------------------------------ [0]PETSC ERROR: Petsc Release Version 3.2.0, Patch 5, Sat Oct 29 13:45:54 CDT 2011 [0]PETSC ERROR: See docs/changes/index.html for recent updates. [0]PETSC ERROR: See docs/faq.html for hints about trouble shooting. [0]PETSC ERROR: See docs/index.html for manual pages. [0]PETSC ERROR: ------------------------------------------------------------------------ [0]PETSC ERROR: /home/dsz/build/framework-debug/sandbox/cscs/bin/FluidSolver on a linux-gnu named tharsis by dsz Fri Dec 30 15:31:20 2011 [0]PETSC ERROR: Libraries linked from /home/dsz/pack/petsc-3.2-p5/linux-gnu-c-debug/lib [0]PETSC ERROR: Configure run at Wed Nov 23 13:57:33 2011 [0]PETSC ERROR: Configure options PETSC_DIR=/home/dsz/pack/petsc-3.2-p5 PETSC_ARCH=linux-gnu-c-debug --with-debugging=1 --with-x=0 --download-f-blas-lapack=1 --download-mpich=1 --download-hypre=1 --download-parmetis=1 --download-scalapack --download-blacs --download-mumps --with-hdf5 --with-hdf5-dir=/usr [0]PETSC ERROR: ------------------------------------------------------------------------ [0]PETSC ERROR: VecNorm() line 167 in /home/dsz/pack/petsc-3.2-p5/src/vec/vec/interface/rvector.c [0]PETSC ERROR: FGMREScycle() line 132 in /home/dsz/pack/petsc-3.2-p5/src/ksp/ksp/impls/gmres/fgmres/fgmres.c [0]PETSC ERROR: KSPSolve_FGMRES() line 299 in /home/dsz/pack/petsc-3.2-p5/src/ksp/ksp/impls/gmres/fgmres/fgmres.c [0]PETSC ERROR: KSPSolve() line 423 in /home/dsz/pack/petsc-3.2-p5/src/ksp/ksp/interface/itfunc.c [0]PETSC ERROR: ApplyPreconditioner() line 3721 in "unknowndirectory/"/home/dsz/src/framework/sandbox/dsz/cscs/solve/FluidSolver.cxx [0]PETSC ERROR: PCApply_Shell() line 121 in /home/dsz/pack/petsc-3.2-p5/src/ksp/pc/impls/shell/shellpc.c [0]PETSC ERROR: PCApply() line 383 in /home/dsz/pack/petsc-3.2-p5/src/ksp/pc/interface/precon.c [0]PETSC ERROR: FGMREScycle() line 174 in /home/dsz/pack/petsc-3.2-p5/src/ksp/ksp/impls/gmres/fgmres/fgmres.c [0]PETSC ERROR: KSPSolve_FGMRES() line 299 in /home/dsz/pack/petsc-3.2-p5/src/ksp/ksp/impls/gmres/fgmres/fgmres.c [0]PETSC ERROR: KSPSolve() line 423 in /home/dsz/pack/petsc-3.2-p5/src/ksp/ksp/interface/itfunc.c
