[petsc-users] KSPsolve Problem

[Sharp Stone]

Dear all,

I'm trying to solve a linear system with petsc ksp solver. But after I
called the kspsolve routine, I always got the "Vec entry at local location
0 is not-a-number or infinite at end of function" errors below. I checked
the matrix and the vectors, and they are all numbers (and zeros). Is this a
bug or I miss something? Thank you very much in advance!

[0]PETSC ERROR: --------------------- Error Message
--------------------------------------------------------------

[0]PETSC ERROR: Floating point exception

[0]PETSC ERROR: Vec entry at local location 0 is not-a-number or infinite
at end of function: Parameter number 3

[0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html for
trouble shooting.

[0]PETSC ERROR: Petsc Release Version 3.5.2, Sep, 08, 2014

[0]PETSC ERROR: ./pStreamer on a arch-darwin-cxx-debug named
host206-47.physci.fit.edu by GPL Tue Oct 14 14:58:05 2014

[0]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++
--with-fc=gfortran --with-clanguage=cxx --download-fblaslapack
--download-mpich

[0]PETSC ERROR: #12 VecValidValues() line 34 in
/Users/GPL/local/PETSc/petsc-3.5.2/src/vec/vec/interface/rvector.c

[0]PETSC ERROR: #13 PCApply() line 442 in
/Users/GPL/local/PETSc/petsc-3.5.2/src/ksp/pc/interface/precon.c

[0]PETSC ERROR: #14 KSP_PCApply() line 230 in
/Users/GPL/local/PETSc/petsc-3.5.2/include/petsc-private/kspimpl.h

[0]PETSC ERROR: #15 KSPSolve_PREONLY() line 26 in
/Users/GPL/local/PETSc/petsc-3.5.2/src/ksp/ksp/impls/preonly/preonly.c

[0]PETSC ERROR: #16 KSPSolve() line 459 in
/Users/GPL/local/PETSc/petsc-3.5.2/src/ksp/ksp/interface/itfunc.c

[0]PETSC ERROR: #17 PCApply_BJacobi_Singleblock() line 675 in
/Users/GPL/local/PETSc/petsc-3.5.2/src/ksp/pc/impls/bjacobi/bjacobi.c

[0]PETSC ERROR: #18 PCApply() line 440 in
/Users/GPL/local/PETSc/petsc-3.5.2/src/ksp/pc/interface/precon.c

[0]PETSC ERROR: #19 KSP_PCApply() line 230 in
/Users/GPL/local/PETSc/petsc-3.5.2/include/petsc-private/kspimpl.h

[0]PETSC ERROR: #20 KSPInitialResidual() line 56 in
/Users/GPL/local/PETSc/petsc-3.5.2/src/ksp/ksp/interface/itres.c

[0]PETSC ERROR: #21 KSPSolve_BCGS() line 50 in
/Users/GPL/local/PETSc/petsc-3.5.2/src/ksp/ksp/impls/bcgs/bcgs.c

[0]PETSC ERROR: #22 KSPSolve() line 459 in
/Users/GPL/local/PETSc/petsc-3.5.2/src/ksp/ksp/interface/itfunc.c

-- 
Best regards,
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