[petsc-dev] Error during KSPDestroy

[Matthew Knepley]

On Sun, May 6, 2012 at 7:28 AM, Alexander Grayver
<agrayver at gfz-potsdam.de>wrote:

> Hello,
>
> I use KSP and random rhs to compute largest singular value:
>

1) Is this the whole program? If not, this can be caused by memory
corruption somewhere else. This is what I suspect.

2) You can put in CHKMEMQ; throughout the code to find exactly where the
memory corruption happens.

   Matt


>  ! create solver and set options for singular value estimation
>  call KSPCreate(MPI_COMM_WORLD,ksp,**ierr);CHKERRQ(ierr)
>  call KSPSetType(ksp,KSPGMRES,ierr);**CHKERRQ(ierr)
>  call KSPSetTolerances(ksp,**solvertol,PETSC_DEFAULT_**
> DOUBLE_PRECISION,PETSC_**DEFAULT_DOUBLE_PRECISION,its,**
> ierr);CHKERRQ(ierr)
>  call KSPGMRESSetRestart(ksp, its, ierr);CHKERRQ(ierr)
>  call KSPSetComputeSingularValues(**ksp, flg, ierr);CHKERRQ(ierr)
>  call KSPSetFromOptions(ksp,ierr);**CHKERRQ(ierr)
>
>  ! generate random RHS
>  call PetscRandomCreate(PETSC_COMM_**WORLD,rctx,ierr)
>  call PetscRandomSetFromOptions(**rctx,ierr)
>  call VecSetRandom(b,rctx,ierr)
>
>  !no preconditioning
>  call KSPGetPC(ksp,pc,ierr);CHKERRQ(**ierr)
>  call PCSetType(pc,PCNONE,ierr);**CHKERRQ(ierr)
>  call KSPSetOperators(ksp,A,A,SAME_**PRECONDITIONER,ierr);CHKERRQ(**ierr)
>  !solve system
>  call KSPSolve(ksp,b,x,ierr);**CHKERRQ(ierr)
>  call KSPComputeExtremeSingularValue**s(ksp, smax, smin,
> ierr);CHKERRQ(ierr)
>
>  call KSPDestroy(ksp,ierr);CHKERRQ(**ierr)
>
> However it crashes:
>
> [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[1]PETSC<http://www.mcs.anl.gov/petsc/documentation/faq.html#valgrind[1]PETSC>ERROR: or try
> http://valgrind.org on GNU/linux and Apple Mac OS X to find memory
> corruption errors
> [1]PETSC ERROR: PetscMallocValidate: error detected at
>  PetscDefaultSignalHandler() line 157 in /home/lib/petsc-dev1/src/sys/**
> error/signal.c
> [1]PETSC ERROR: Memory at address 0x4aa3f00 is corrupted
> [1]PETSC ERROR: Probably write past beginning or end of array
> [1]PETSC ERROR: Last intact block allocated in KSPSetUp_GMRES() line 73 in
> /home/lib/petsc-dev1/src/ksp/**ksp/impls/gmres/gmres.c
> [1]PETSC ERROR: --------------------- Error Message
> ------------------------------**------
> [1]PETSC ERROR: Memory corruption!
> [1]PETSC ERROR:  !
> [1]PETSC ERROR: ------------------------------**
> ------------------------------**------------
> [1]PETSC ERROR: Petsc Development HG revision:
> f3c119f7ddbfee243b51907a90acab**15127ccb39  HG Date: Sun Apr 29 21:37:29
> 2012 -0500
> [1]PETSC ERROR: See docs/changes/index.html for recent updates.
> [1]PETSC ERROR: See docs/faq.html for hints about trouble shooting.
> [1]PETSC ERROR: See docs/index.html for manual pages.
> [1]PETSC ERROR: ------------------------------**
> ------------------------------**------------
> [1]PETSC ERROR: /home/prog on a openmpi-i named node207 by user Sun May  6
> 12:58:24 2012
> [1]PETSC ERROR: Libraries linked from /home/lib/petsc-dev1/openmpi-**
> intel-complex-debug-f/lib
> [1]PETSC ERROR: Configure run at Mon Apr 30 10:20:49 2012
> [1]PETSC ERROR: Configure options --with-blacs-include=/opt/**
> intel/Compiler/11.1/072/mkl/**include --with-blacs-lib=/opt/intel/**
> Compiler/11.1/072/mkl/lib/**em64t/libmkl_blacs_openmpi_**lp64.a
> --with-blas-lapack-lib="[/opt/**intel/Compiler/11.1/072/mkl/**
> lib/em64t/libmkl_intel_lp64.a,**/opt/intel/Compiler/11.1/072/**
> mkl/lib/em64t/libmkl_intel_**thread.a,/opt/intel/Compiler/**
> 11.1/072/mkl/lib/em64t/libmkl_**core.a,/opt/intel/Compiler/11.**1/072/lib/intel64/libiomp5.a]"
> --with-fortran-interfaces=1 --with-mpi-dir=/opt/mpi/intel/**openmpi-1.4.2
> --with-petsc-arch=openmpi-**intel-complex-debug-f --with-precision=double
> --with-scalapack-include=/opt/**intel/Compiler/11.1/072/mkl/**include
> --with-scalapack-lib=/opt/**intel/Compiler/11.1/072/mkl/**
> lib/em64t/libmkl_scalapack_**lp64.a --with-scalar-type=complex --with-x=0
> PETSC_ARCH=openmpi-intel-**complex-debug-f
> [1]PETSC ERROR: ------------------------------**
> ------------------------------**------------
> [1]PETSC ERROR: PetscMallocValidate() line 138 in
> /home/lib/petsc-dev1/src/sys/**memory/mtr.c
> [1]PETSC ERROR: PetscDefaultSignalHandler() line 157 in
> /home/lib/petsc-dev1/src/sys/**error/signal.c
>
>
> Call stack from debugger:
>
> opal_memory_ptmalloc2_int_**free, FP=7fffd4765300
> opal_memory_ptmalloc2_free_**hook, FP=7fffd4765330
> PetscFreeAlign,      FP=7fffd4765370
> PetscTrFreeDefault,  FP=7fffd4765520
> KSPReset_GMRES,      FP=7fffd4765740
> KSPReset,            FP=7fffd4765840
> KSPDestroy,          FP=7fffd47659a0
> kspdestroy_,         FP=7fffd47659d0
>
>
> Any ideas?
>
> Thanks.
>
> --
> Regards,
> Alexander
>
>


-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
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