Invalid argument! - not a permutation!

[Matthew Knepley]

On 10/25/07, Tim Stitt <timothy.stitt at ichec.ie> wrote:
> OK...that is useful thanks.
>
> If you don't mind just one more question...I notice that the
> MatLUFactorSymbolic() routine now executes with one processor but
> complains when I run > 2 processors. The actual error message is:
>
> [1]PETSC ERROR: No support for this operation for this object type!
> [1]PETSC ERROR: Matrix type mpiaij  symbolic LU!
>
> Is this because the default LU factorisation routine isn't parallel...I
> just assumed parallel superlu would be picked up automatically (it is
> compiled into my PETSc build) ?

It is only valid for the superlu matrix type, -mat_type superlu_dist.

  Matt

> Tim.
>
> Barry Smith wrote:
> >   I have added this information to the error message that gets printed.
> >
> >    Barry
> >
> >
> > On Thu, 25 Oct 2007, Matthew Knepley wrote:
> >
> >
> >> I think you need to tell use that the IS is a permutation:
> >>
> >> http://www-unix.mcs.anl.gov/petsc/petsc-as/snapshots/petsc-current/docs/manualpages/IS/ISSetPermutation.html
> >>
> >>    Matt
> >>
> >> On 10/25/07, Tim Stitt <timothy.stitt at ichec.ie> wrote:
> >>
> >>> Hi all,
> >>>
> >>> Following on from some help I got a few days ago with respect to
> >>> MatLUFactorSymbolic() usage in Fortran...I think I now have all the
> >>> parts in place but keep getting the following runtime error upon execution:
> >>>
> >>> [0]PETSC ERROR: --------------------- Error Message
> >>> ------------------------------------
> >>> [0]PETSC ERROR: Invalid argument!
> >>> [0]PETSC ERROR: not a permutation!
> >>> ...
> >>> [0]PETSC ERROR:
> >>> ------------------------------------------------------------------------
> >>> [0]PETSC ERROR: ISInvertPermutation() line 183 in
> >>> src/vec/is/interface/index.c
> >>> [0]PETSC ERROR: MatLUFactorSymbolic_SeqAIJ() line 276 in
> >>> src/mat/impls/aij/seq/aijfact.c
> >>> [0]PETSC ERROR: MatLUFactorSymbolic() line 2178 in
> >>> src/mat/interface/matrix.c
> >>> [localhost.localdomain:24730] MPI_ABORT invoked on rank 0 in
> >>> communicator MPI_COMM_WORLD with errorcode 62
> >>>
> >>> Here is the portion of  the offending code (I think):
> >>>
> >>>   call MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY,error);CHKERRQ(error)
> >>>   call MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY,error);CHKERRQ(error)
> >>>   call ISCreateGeneral(PETSC_COMM_WORLD,order,columnIndices,
> >>> indexSet,error);CHKERRQ(error)
> >>>   call MatFactorInfoInitialize(info,error);CHKERRQ(error)
> >>>   call
> >>> MatLUFactorSymbolic(A,indexSet,indexSet,info,factorMat,error);CHKERRQ(error)
> >>>
> >>> order - number of rows/columns in square matrix A
> >>> columnIndices - 1D array containing values 0-->order-1
> >>>
> >>> All types are set correctly as far as I can tell.
> >>>
> >>> Can anyone suggest why the execution falls over during the
> >>> MatLUFactorSymbolic() call?
> >>>
> >>> Thanks again,
> >>>
> >>> Tim.
> >>>
> >>> --
> >>> Dr. Timothy Stitt <timothy_dot_stitt_at_ichec.ie>
> >>> HPC Application Consultant - ICHEC (www.ichec.ie)
> >>>
> >>> Dublin Institute for Advanced Studies
> >>> 5 Merrion Square - Dublin 2 - Ireland
> >>>
> >>> +353-1-6621333 (tel) / +353-1-6621477 (fax)
> >>>
> >>>
> >>>
> >>
> >>
> >
> >
>
>
> --
> Dr. Timothy Stitt <timothy_dot_stitt_at_ichec.ie>
> HPC Application Consultant - ICHEC (www.ichec.ie)
>
> Dublin Institute for Advanced Studies
> 5 Merrion Square - Dublin 2 - Ireland
>
> +353-1-6621333 (tel) / +353-1-6621477 (fax)
>
>


-- 
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