[petsc-dev] [petsc-users] MatSetBlockSize no longer works after MatCreateSeqAIJ

[Barry Smith]

On Jun 13, 2012, at 10:12 PM, Jed Brown wrote:

> Okay, I thought switching to MatCreateAIJ was a good time to add it, bit it's kind of too late now.

   Good point. Do it, call it a bug when we didn't add the bs on that change so  this is worthy of a patch for 3.3

   Barry

> 
> On Jun 13, 2012 10:06 PM, "Barry Smith" <bsmith at mcs.anl.gov> wrote:
> 
> On Jun 13, 2012, at 8:03 PM, Jed Brown wrote:
> 
> > What I do is
> >
> > MatCreate(comm,&A);
> > MatSetSizes(A,...);
> > MatSetBlockSize(A,bs);
> > MatSetOptionsPrefix(A,"yourchoice_");
> > MatSetFromOptions(A);
> > MatXAIJSetPreallocation(A,...);
> >
> > This should work with any matrix type, parallel and sequential, and you can specify it without interfering with any other matrices using -yourchoice_mat_type aij {baij, sbaij}.
> >
> >
> > Devs, is there a reason that block size wasn't added to the convenience constructor?
> 
>    To break less stuff and not make most people change their MatCreateMPIAIJ call()
> 
> > Wasn't there a discussion about adding it?
> 
>   Yes
> 
> |   What should we do?
> 
>   Get rid of convenience constructors?
> 
>  Barry
> 
> 
> >
> > On Wed, Jun 13, 2012 at 7:55 PM, Geoffrey Irving <irving at naml.us> wrote:
> > Hello,
> >
> > The following code used to work, but breaks after upgrading to 3.3:
> >
> >    ....
> >    CHECK(MatCreateSeqAIJ(comm,3*n,3*n,0,scalar_view(nnz).data(),&mat));
> >    CHECK(MatSetBlockSize(mat,3));
> >    ...
> >
> > The error follows.  Presumably MatSetBlockSize got more strict, and I
> > need to break the single MatCreateSeqAIJ into multiple lines (matrix
> > creation followed by preallocation) in order to insert MatSetBlockSize
> > in the middle.  What are the correct functions to call?
> >
> > Thanks,
> > Geoffrey
> >
> > [0]PETSC ERROR: --------------------- Error Message
> > ------------------------------------
> > [0]PETSC ERROR: Arguments are incompatible!
> > [0]PETSC ERROR: Cannot change block size 1 to 3!
> > [0]PETSC ERROR:
> > ------------------------------------------------------------------------
> > [0]PETSC ERROR: Petsc Release Version 3.3.0, Patch 0, Tue Jun  5
> > 14:20:42 CDT 2012
> > [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: Unknown Name on a darwin named tile.local by irving
> > Wed Jun 13 17:51:34 2012
> > [0]PETSC ERROR: Libraries linked from
> > /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_math_petsc/petsc/work/destroot/opt/local/lib/petsc/lib
> > [0]PETSC ERROR: Configure run at Wed Jun 13 12:11:05 2012
> > [0]PETSC ERROR: Configure options --prefix=/opt/local --with-python
> > --with-debugging=0 --with-c-support=1 --with-c++-support=1
> > --with-pic=fPIC --with-shared-libraries=0 --with-mpi=1
> > --PETSC_ARCH=darwin
> > --prefix=/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_math_petsc/petsc/work/destroot/opt/local/lib/petsc
> > --with-cc=/opt/local/bin/openmpicc
> > --with-cxx=/opt/local/bin/openmpicxx
> > --with-mpiexec=/opt/local/bin/openmpiexec
> > --with-lapack-lib=/usr/lib/liblapack.dylib
> > --with-blas-lib=/usr/lib/libblas.dylib --download-umfpack=1
> > --download-ml --download-metis --download-parmetis --download-blacs
> > --download-scalapack --download-mumps --download-ptscotch
> > --with-fc=/opt/local/bin/openmpif90 --LIBS=-lstdc++
> > [0]PETSC ERROR:
> > ------------------------------------------------------------------------
> > [0]PETSC ERROR: PetscLayoutSetBlockSize() line 460 in
> > /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_math_petsc/petsc/work/petsc-3.3-p0/src/vec/vec/impls/mpi/pmap.c
> > [0]PETSC ERROR: MatSetBlockSize() line 6691 in
> > /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_math_petsc/petsc/work/petsc-3.3-p0/src/mat/interface/matrix.c
> > [0]PETSC ERROR: --------------------- Error Message
> > ------------------------------------
> > [0]PETSC ERROR: Arguments are incompatible!
> > [0]PETSC ERROR:  !
> > [0]PETSC ERROR:
> > ------------------------------------------------------------------------
> > [0]PETSC ERROR: Petsc Release Version 3.3.0, Patch 0, Tue Jun  5
> > 14:20:42 CDT 2012
> > [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: Unknown Name on a darwin named tile.local by irving
> > Wed Jun 13 17:51:34 2012
> > [0]PETSC ERROR: Libraries linked from
> > /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_math_petsc/petsc/work/destroot/opt/local/lib/petsc/lib
> > [0]PETSC ERROR: Configure run at Wed Jun 13 12:11:05 2012
> > [0]PETSC ERROR: Configure options --prefix=/opt/local --with-python
> > --with-debugging=0 --with-c-support=1 --with-c++-support=1
> > --with-pic=fPIC --with-shared-libraries=0 --with-mpi=1
> > --PETSC_ARCH=darwin
> > --prefix=/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_math_petsc/petsc/work/destroot/opt/local/lib/petsc
> > --with-cc=/opt/local/bin/openmpicc
> > --with-cxx=/opt/local/bin/openmpicxx
> > --with-mpiexec=/opt/local/bin/openmpiexec
> > --with-lapack-lib=/usr/lib/liblapack.dylib
> > --with-blas-lib=/usr/lib/libblas.dylib --download-umfpack=1
> > --download-ml --download-metis --download-parmetis --download-blacs
> > --download-scalapack --download-mumps --download-ptscotch
> > --with-fc=/opt/local/bin/openmpif90 --LIBS=-lstdc++
> > [0]PETSC ERROR:
> > ------------------------------------------------------------------------
> > [0]PETSC ERROR: PetscSolidMat() line 114 in petsc/ksp.cpp
> >
>