[petsc-users] PETSC error: Caught signal number 8 FPE

[Soumya Mukherjee]

Hi.

I am trying to solve an eigenvalue problem. I have a code that works for a
particular input file. And, whenever I change the input file, the following
error message appears. Any hint for debugging, please?

PETSC ERROR:
------------------------------------------------------------------------

[0]PETSC ERROR: Caught signal number 8 FPE: Floating Point
Exception,probably divide by zero

[0]PETSC ERROR: Try option -start_in_debugger or -on_error_attach_debugger

[0]PETSC ERROR: or see
http://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind

[0]PETSC ERROR: or try http://valgrind.org on GNU/linux and Apple Mac OS X
to find memory corruption errors

[0]PETSC ERROR: likely location of problem given in stack below

[0]PETSC ERROR: ---------------------  Stack Frames
------------------------------------

[0]PETSC ERROR: Note: The EXACT line numbers in the stack are not available,

[0]PETSC ERROR:       INSTEAD the line number of the start of the function

[0]PETSC ERROR:       is given.

[0]PETSC ERROR: [0] EPSGetConverged line 233
/home/soumya/slepc-3.6.0/src/eps/interface/epssolve.c

[0]PETSC ERROR: [0] EPSErrorView line 447
/home/soumya/slepc-3.6.0/src/eps/interface/epsview.c

[0]PETSC ERROR: [0] MatLUFactorSymbolic_SeqAIJ line 295
/home/soumya/petsc-3.6.1/src/mat/impls/aij/seq/aijfact.c

[0]PETSC ERROR: [0] MatLUFactorSymbolic line 2877
/home/soumya/petsc-3.6.1/src/mat/interface/matrix.c

[0]PETSC ERROR: [0] PCSetUp_LU line 99
/home/soumya/petsc-3.6.1/src/ksp/pc/impls/factor/lu/lu.c

[0]PETSC ERROR: [0] PCSetUp line 944
/home/soumya/petsc-3.6.1/src/ksp/pc/interface/precon.c

[0]PETSC ERROR: [0] KSPSetUp line 247
/home/soumya/petsc-3.6.1/src/ksp/ksp/interface/itfunc.c

[0]PETSC ERROR: [0] STSetUp_Cayley line 161
/home/soumya/slepc-3.6.0/src/sys/classes/st/impls/cayley/cayley.c

[0]PETSC ERROR: [0] STSetUp line 273
/home/soumya/slepc-3.6.0/src/sys/classes/st/interface/stsolve.c

[0]PETSC ERROR: [0] EPSSetUp line 58
/home/soumya/slepc-3.6.0/src/eps/interface/epssetup.c

[0]PETSC ERROR: [0] EPSSolve line 83
/home/soumya/slepc-3.6.0/src/eps/interface/epssolve.c

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

[0]PETSC ERROR: Signal received

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

[0]PETSC ERROR: Petsc Release Version 3.6.1, Jul, 22, 2015

[0]PETSC ERROR: ./main on a arch-linux2-cxx-debug named
soumya-OptiPlex-9010 by soumya Mon Sep 21 21:36:29 2015

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

[0]PETSC ERROR: #12 User provided function() line 0 in  unknown file

application called MPI_Abort(MPI_COMM_WORLD, 59) - process 0

[unset]: aborting job:

application called MPI_Abort(MPI_COMM

Thanks,
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