[Paraview-developers] Using vtkImageMarchingCubes as multithread process gives wrong output

[Frank TT]

Hi Utkarsh,


thanks for your hint and sorry for the late answer. I've got some other
problem after some updates with remote rendering, which I had have to
fix first.

I avoid the *.mhd file reader issue using *.xdmf (with binary *.raw)
files. This reader works fine and it is consistent with the
expectations. 

So I didn't work on the RequestData(…) function.

I'm still using ITK or imagej to create the *.mhd (and *.raw) files. But
I have to create an extra *.xdmf header file. Does anybody know a well
working *.xdmf converter?


Greetings

Frank




On Sun, 2014-10-26 at 12:07 -0400, Utkarsh Ayachit wrote:
> The problem seems to be that the vtkImageMarchingCubes filter is not
> designed to be used in cases where data is also partitioned among
> ranks. It's RequestData(..) implementation directly uses WHOLE_EXTENT
> to determine chunking for threaded executing, it should have been
> using UPDATE_EXTENT.
> 
> Utkarsh
> 
> On Thu, Oct 23, 2014 at 8:45 AM, Frank TT <frank.tt at einseinself.org> wrote:
> > On 2014-10-22 20:58, Utkarsh Ayachit wrote:
> >>
> >> Frank,
> >>
> >> Did you forget to attach the attachments.
> >
> >
> > Oh, yes. Sorry.
> >
> >
> >
> >
> >
> >>
> >> Utkarsh
> >>
> >> On Wed, Oct 22, 2014 at 6:40 AM, Frank tt <frank.tt at einseinself.org>
> >> wrote:
> >>>
> >>> Hi,
> >>>
> >>> I wrote a PV plugin based on vtkImageMarchingCubes.h. At my local
> >>> machine it's working fine. But at the server, when running with mpiexec
> >>> I get some wrong output of the createt surface. (See attachments)
> >>>
> >>> Now I'm not sure if this depends on the vtkImageMarchingCubes.h or at
> >>> mpiexec.
> >>>
> >>> I'm using at server:
> >>> * cuda-5.5
> >>> * gcc-4.7.1
> >>> * mesa-7.11.2 (selfbuild, like the superbuild)
> >>> * openmpi-1.8.1 (selfbuild)
> >>> * paraview-4.1.0 (selfbuild)
> >>>
> >>> Has anybody any idea what I did wrong or what I can do?
> >>>
> >>> I have the option to use the servers mpi installation
> >>> (parastation/gcc-mt-5.0.29). This is what I'm actually doing (I'm
> >>> waiting for the next proc slot a the server).
> >>>
> >>> Greetings
> >>>
> >>> Frank
> >>>
> >>> _______________________________________________
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