[petsc-users] binary vtk viewer DMDA

[Matthew Knepley]

On Wed, Jan 9, 2013 at 10:10 AM, Blaise A Bourdin <bourdin at lsu.edu> wrote:

>  That's a good start indeed. Is there any way to save files defined on
> different DMDA (same grid but different number of dof). When I try to do
> that, I get the following error message:
>

Hmm, that would mean introducing a structural comparison rather than an
identity.

  Matt


>  MacBook-Pro:VTK blaise$ ./TestVTK
> [0]PETSC ERROR: --------------------- Error Message
> ------------------------------------
> [0]PETSC ERROR: Arguments are incompatible!
> [0]PETSC ERROR: Cannot write a field from more than one grid to the same
> VTK file!
> [0]PETSC ERROR:
> ------------------------------------------------------------------------
> [0]PETSC ERROR: Petsc Release Version 3.3.0, Patch 5, 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: ./TestVTK on a Darwin-gc named MacBook-Pro.local by blaise
> Wed Jan  9 10:09:37 2013
> [0]PETSC ERROR: Libraries linked from
> /opt/HPC/petsc-3.3/Darwin-gcc4.2-mef90-g/lib
> [0]PETSC ERROR: Configure run at Thu Jan  3 15:42:04 2013
> [0]PETSC ERROR: Configure options --download-boost=1 --download-chaco=1
> --download-exodusii=/opt/HPC/src/tarball/exodusii-5.22b.tgz
> --download-hdf5=1 --download-metis=1 --download-netcdf=1
> --download-parmetis=1 --download-sowing=1 --download-triangle=1
> --download-yaml=1 --with-clanguage=C++ --with-cmake=cmake
> --with-debugging=1 --with-fortran-datatypes --with-gnu-compilers=1
> --with-mpi-dir=/opt/HPC/mpich2-1.4.1p1-gcc4.2 --with-pic
> --with-shared-libraries=1 --with-sieve --with-sieve-memory-logging
> --with-x11=1 PETSC_ARCH=Darwin-gcc4.2-mef90-g
> [0]PETSC ERROR:
> ------------------------------------------------------------------------
> [0]PETSC ERROR: PetscViewerVTKAddField_VTK() line 126 in
> /opt/HPC/petsc-3.3/src/sys/viewer/impls/vtk/vtkv.c
> [0]PETSC ERROR: PetscViewerVTKAddField() line 32 in
> /opt/HPC/petsc-3.3/src/sys/viewer/impls/vtk/vtkv.c
> [0]PETSC ERROR: VecView_MPI_DA() line 531 in
> /opt/HPC/petsc-3.3/src/dm/impls/da/gr2.c
> [0]PETSC ERROR: VecView() line 776 in
> /opt/HPC/petsc-3.3/src/vec/vec/interface/vector.c
> [0]PETSC ERROR: main() line 46 in TestVTK.c
> application called MPI_Abort(MPI_COMM_WORLD, 75) - process 0
> [unset]: aborting job:
> application called MPI_Abort(MPI_COMM_WORLD, 75) - process 0
>
>  Blaise
>
>  On Jan 9, 2013, at 9:51 AM, Jed Brown <jedbrown at mcs.anl.gov>
>  wrote:
>
>  None of that crazy "developer" nonsense is need for users. Just do this:
>
>      PetscViewer viewer;
>     /* file name extension sets format by default, see also
> PetscViewerSetFormat(viewer,PETSC_VIEWER_VTK_VTS) */
>     ierr =
> PetscViewerVTKOpen(comm,"yourfile.vts",FILE_MODE_WRITE,&viewer);CHKERRQ(ierr);
>     ierr = VecView(X,viewer);CHKERRQ(ierr);
>     ierr = PetscViewerDestroy(&viewer);CHKERRQ(ierr);
>
>  When using TS, you can do -ts_monitor_draw_solution_vtk
> 'filename-%03D.vts' to save each time step to a numbered binary file (ready
> to animate in paraview or visit).
>
>
> On Wed, Jan 9, 2013 at 9:37 AM, Blaise A Bourdin <bourdin at lsu.edu> wrote:
>
>> Hi,
>>
>> I am looking at the documentation and the examples looking for a simple
>> illustration of how to use the new vtk binary viewers for structured data
>> defined by a DMDA, but can't find any straightforward example. Is there a
>> simple example that I am missing?
>>
>> When I try
>> PetscViewerVTKAddField(VTKviewer,(PetscObject)
>> dmda1,DMDAVTKWriteAll,PETSC_VTK_POINT_FIELD,(PetscObject) p);CHKERRQ(ierr);
>> I get a compilation time error:
>> TestVTK.c:53: error: ‘DMDAVTKWriteAll’ was not declared in this scope
>> indeed, DMDAVTKWriteAll is defined in a private header. Is this the way
>> it is supposed to be?
>>
>> Is the xml file describing the content of the binary files generated
>> automatically or do I need to take care of it by myself?
>>
>> I am using petsc-3.3, latest changeset.
>>
>> Regards,
>> Blaise
>> --
>> Department of Mathematics and Center for Computation & Technology
>> Louisiana State University, Baton Rouge, LA 70803, USA
>> Tel. +1 (225) 578 1612, Fax  +1 (225) 578 4276
>> http://www.math.lsu.edu/~bourdin
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>     --
>  Department of Mathematics and Center for Computation & Technology
>  Louisiana State University, Baton Rouge, LA 70803, USA
>  Tel. +1 (225) 578 1612, Fax  +1 (225) 578 4276
> http://www.math.lsu.edu/~bourdin
>
>
>
>
>
>
>
>


-- 
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
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