[petsc-users] Mumps Error

[Barry Smith]

  Adam,

   You need to use the MUMPS documentation to interpret what the error INFO(1)=-9, INFO(2)=13 means  and then go from that.


   Barry

On Aug 31, 2011, at 10:13 AM, Adam Byrd wrote:

> Dear Users,
> 
> I'm having trouble figuring out why the MUMPS solver is failing on a specific range of one of my parameters. When using the PETSc direct solver on a single processor I have no issues. There error is:
> 
> [0]PETSC ERROR: --------------------- Error Message ------------------------------------
> [0]PETSC ERROR: Error in external library!
> [0]PETSC ERROR: Error reported by MUMPS in numerical factorization phase: INFO(1)=-9, INFO(2)=13
> !
> [0]PETSC ERROR: ------------------------------------------------------------------------
> [0]PETSC ERROR: Petsc Release Version 3.1.0, Patch 8, Thu Mar 17 13:37:48 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: ./cntor on a complex-c named hpc-1-14.local by abyrd Wed Aug 31 10:53:42 2011
> [0]PETSC ERROR: Libraries linked from /panfs/storage.local/scs/home/abyrd/petsc-3.1-p8/complex-cpp-mumps/lib
> [0]PETSC ERROR: Configure run at Mon Jul 11 15:28:42 2011
> [0]PETSC ERROR: Configure options PETSC_ARCH=complex-cpp-mumps --with-cc=mpicc --with-fc=mpif90 --with-blas-lapack-dir=/usr/lib64 --with-shared --with-clanguage=c++ --with-scalar-type=complex --download-mumps=1 --download-blacs=1 --download-scalapack=1 --download-parmetis=1 --with-cxx=mpicxx
> [0]PETSC ERROR: ------------------------------------------------------------------------
> [0]PETSC ERROR: MatFactorNumeric_MUMPS() line 517 in src/mat/impls/aij/mpi/mumps/mumps.c
> [0]PETSC ERROR: MatLUFactorNumeric() line 2587 in src/mat/interface/matrix.c
> [0]PETSC ERROR: PCSetUp_LU() line 158 in src/ksp/pc/impls/factor/lu/lu.c
> [0]PETSC ERROR: PCSetUp() line 795 in src/ksp/pc/interface/precon.c
> [0]PETSC ERROR: KSPSetUp() line 237 in src/ksp/ksp/interface/itfunc.c
> [0]PETSC ERROR: InvertHamiltonian() line 102 in WDinvert.h
> 
> 
> I suspect it has something to do with the preconditioning or setup of the matrix I am trying to invert. The matrix becomes singular at energy = 0 eV, and is nearly singular for values close to that, but the code is failing on energies relatively far from that point. The affected energy interval is [-0.03095, 0.03095].
> 
> Is anyone able to point in the right direction to figure out what I'm not setting up properly?
> 
> Respectfully,
> Adam Byrd
> <PETScCntor.zip>