[petsc-dev] GAMG MatMatMult error on 1 core

[Jed Brown]

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.eduby 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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