[petsc-dev] segfault in SNESDestroy()

[Hong]

Adrian,
Adding option '-mat_type aij', do you still see this problem?

Is possible to send us a simple code that produces this error?
I cannot reproduce it using petsc examples.

Hong


On Wed, May 17, 2017 at 10:50 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:

>
>    Adrian,
>
>     There is a good chance this is a bug that got introduced while
> optimizing the scalability of the ASM preconditioner.
>
>    Hong,
>
>      Can you try to reproduce the crash by using the options below on one
> of the PETSc test examples.
>
>    Thanks
>
>     Barry
>
> > On May 17, 2017, at 10:47 PM, Adrian Croucher <a.croucher at auckland.ac.nz>
> wrote:
> >
> > hi,
> >
> > I just pulled the latest 'next' branch and am getting a segfault in
> SNESDestroy(), which didn't used to happen.
> >
> > It looks like it is having trouble destroying submatrices in the
> Jacobian sub-preconditioner. The KSP in the SNES is using BCGS with ASM
> preconditioner.
> >
> > The error goes away if I run in serial, or if I set the ILU fill-in
> greater than zero using e.g. -sub_pc_factor_levels 1.
> >
> > The error message is below. Any clues?
> >
> > - Adrian
> >
> > --
> > [0]PETSC ERROR: ------------------------------
> ------------------------------------------
> > [0]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation,
> probably memory access out of range
> > [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: [1]PETSC ERROR: ------------------------------
> ------------------------------------------
> > [1]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation,
> probably memory access out of range
> > [1]PETSC ERROR: Try option -start_in_debugger or
> -on_error_attach_debugger
> > [1]PETSC ERROR: or see http://www.mcs.anl.gov/petsc/
> documentation/faq.html#valgrind
> > or try http://valgrind.org on GNU/linux and Apple Mac OS X to find
> memory corruption errors
> > [1]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: [1]PETSC ERROR: likely location of problem given in
> stack below
> > [1]PETSC ERROR: ---------------------  Stack Frames
> ------------------------------------
> > [1]PETSC ERROR:       is given.
> > [0]PETSC ERROR: [0] MatDestroy_SeqBAIJ_Submatrices line 220
> /home/acro018/software/PETSc/code/src/mat/impls/baij/seq/baij2.c
> > [0]PETSC ERROR: [0] MatDestroy line 1160 /home/acro018/software/PETSc/
> code/src/mat/interface/matrix.c
> > [0]PETSC ERROR: [0] PCReset_ILU line 23 /home/acro018/software/PETSc/
> code/src/ksp/pc/impls/factor/ilu/ilu.c
> > [0]PETSC ERROR: [0] PCReset line 75 /home/acro018/software/PETSc/
> code/src/ksp/pc/interface/precon.c
> > [0]PETSC ERROR: [0] KSPReset line 955 /home/acro018/software/PETSc/
> code/src/ksp/ksp/interface/itfunc.c
> > [0]PETSC ERROR: [0] PCReset_ASM line 595 /home/acro018/software/PETSc/
> code/src/ksp/pc/impls/asm/asm.c
> > [0]PETSC ERROR: [0] PCReset line 75 /home/acro018/software/PETSc/
> code/src/ksp/pc/interface/precon.c
> > [0]PETSC ERROR: [0] KSPReset line 955 /home/acro018/software/PETSc/
> code/src/ksp/ksp/interface/itfunc.c
> > [0]PETSC ERROR: Note: The EXACT line numbers in the stack are not
> available,
> > [1]PETSC ERROR:       INSTEAD the line number of the start of the
> function
> > [1]PETSC ERROR:       is given.
> > [1]PETSC ERROR: [1] MatDestroy_SeqBAIJ_Submatrices line 220
> /home/acro018/software/PETSc/code/src/mat/impls/baij/seq/baij2.c
> > [1]PETSC ERROR: [1] MatDestroy line 1160 /home/acro018/software/PETSc/
> code/src/mat/interface/matrix.c
> > [1]PETSC ERROR: [1] PCReset_ILU line 23 /home/acro018/software/PETSc/
> code/src/ksp/pc/impls/factor/ilu/ilu.c
> > [1]PETSC ERROR: [1] PCReset line 75 /home/acro018/software/PETSc/
> code/src/ksp/pc/interface/precon.c
> > [0] SNESReset line 2796 /home/acro018/software/PETSc/
> code/src/snes/interface/snes.c
> > [0]PETSC ERROR: [0] SNESDestroy line 2852 /home/acro018/software/PETSc/
> code/src/snes/interface/snes.c
> > [0]PETSC ERROR: --------------------- Error Message
> --------------------------------------------------------------
> > [0]PETSC ERROR: Signal received
> > [0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html
> for trouble shooting.
> > [0]PETSC ERROR: [1]PETSC ERROR: [1] KSPReset line 955
> /home/acro018/software/PETSc/code/src/ksp/ksp/interface/itfunc.c
> > [1]PETSC ERROR: [1] PCReset_ASM line 595 /home/acro018/software/PETSc/
> code/src/ksp/pc/impls/asm/asm.c
> > [1]PETSC ERROR: [1] PCReset line 75 /home/acro018/software/PETSc/
> code/src/ksp/pc/interface/precon.c
> > [1]PETSC ERROR: [1] KSPReset line 955 /home/acro018/software/PETSc/
> code/src/ksp/ksp/interface/itfunc.c
> > [1]PETSC ERROR: [1] SNESReset line 2796 /home/acro018/software/PETSc/
> code/src/snes/interface/snes.c
> > [1]PETSC ERROR: [1] SNESDestroy line 2852 /home/acro018/software/PETSc/
> code/src/snes/interface/snes.c
> > [1]PETSC ERROR: --------------------- Error Message
> --------------------------------------------------------------
> >
> > --
> > Dr Adrian Croucher
> > Senior Research Fellow
> > Department of Engineering Science
> > University of Auckland, New Zealand
> > email: a.croucher at auckland.ac.nz
> > tel: +64 (0)9 923 4611
> >
>
>
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