[petsc-dev] GAMG MatMatMult error on 1 core

[Jed Brown]

On Fri, Mar 29, 2013 at 10:31 AM, John Mousel <elafint.john at gmail.com>wrote:

> So this
>
>   Ap      => proj%A
>   CALL MatCreate(solver%comm,Ap,ierr)
>   CALL MatSetSizes(Ap,nlp,nlp,ngp,ngp,ierr)
>   CALL MatSetType(Ap,MATMPIAIJ,ierr)
>   CALL MatMPIAIJSetPreallocation(Ap,0,dnnz,0,onnz,ierr)
>
> should go to this
>
>   Ap      => proj%A
>   CALL MatCreate(solver%comm,Ap,ierr)
>   CALL MatSetSizes(Ap,nlp,nlp,ngp,ngp,ierr)
>   CALL MatSetType(Ap,MATAIJ,ierr)
>

Yes


>   CALL MatXAIJSetPreallocation(Ap,0,dnnz,0,onnz,ierr)
>

Almost, see the actual arguments to MatXAIJSetPreallocation.


>
> ?
>
>
>
>
> On Fri, Mar 29, 2013 at 10:25 AM, Jed Brown <jedbrown at mcs.anl.gov> wrote:
>
>> On Fri, Mar 29, 2013 at 10:22 AM, John Mousel <john.mousel at gmail.com>wrote:
>>
>>> I get the following error when I try to use GAMG on 1 core. I just
>>> pulled dev and it still exists.
>>>
>>
>> Are you explicitly setting your matrix type to MPIAIJ? Can you use MATAIJ
>> instead (it will choose the correct type based on size)?
>>
>>
>>>
>>> John
>>>
>>> [0]PETSC ERROR: --------------------- Error Message
>>> ------------------------------------
>>> [0]PETSC ERROR: Arguments are incompatible!
>>> [0]PETSC ERROR: MatMatMult requires A, mpiaij, to be compatible with B,
>>> seqaij!
>>> [0]PETSC ERROR:
>>> ------------------------------------------------------------------------
>>> [0]PETSC ERROR: Petsc Development GIT revision: unknown  GIT Date:
>>> unknown
>>> [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: ../src/MUSSEL_exe on a intel-debug named
>>> wv.iihr.uiowa.edu by jmousel Fri Mar 29 10:19:44 2013
>>> [0]PETSC ERROR: Libraries linked from
>>> /home/jmousel/NumericalLibraries/petsc-hg/intel-debug/lib
>>> [0]PETSC ERROR: Configure run at Fri Mar 29 10:00:56 2013
>>> [0]PETSC ERROR: Configure options --download-blacs=1 --download-metis=1
>>> --download-ml=1 --download-mpich=1
>>> --download-parmetis=/home/jmousel/NumericalLibraries/petsc-hg/parmetis-4.0.2-p3.tar.gz
>>> --download-f-blas-lapack=1 --with-cc=icc --download-cmake=1 --with-cxx=icpc
>>> --with-fc=ifort
>>> [0]PETSC ERROR:
>>> ------------------------------------------------------------------------
>>> [0]PETSC ERROR: MatMatMult() line 8567 in
>>> /home/jmousel/NumericalLibraries/petsc-hg/src/mat/interface/matrix.c
>>>  [0]PETSC ERROR: PCGAMGOptprol_AGG() line 1335 in
>>> /home/jmousel/NumericalLibraries/petsc-hg/src/ksp/pc/impls/gamg/agg.c
>>> [0]PETSC ERROR: PCSetUp_GAMG() line 680 in
>>> /home/jmousel/NumericalLibraries/petsc-hg/src/ksp/pc/impls/gamg/gamg.c
>>> [0]PETSC ERROR: PCSetUp() line 890 in
>>> /home/jmousel/NumericalLibraries/petsc-hg/src/ksp/pc/interface/precon.c
>>> [0]PETSC ERROR: KSPSetUp() line 278 in
>>> /home/jmousel/NumericalLibraries/petsc-hg/src/ksp/ksp/interface/itfunc.c
>>> [0]PETSC ERROR: KSPSolve() line 399 in
>>> /home/jmousel/NumericalLibraries/petsc-hg/src/ksp/ksp/interface/itfunc.c
>>>
>>>
>>
>
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