[vtkusers] vtk.vtkDistributedDataFilter() not works

[Magician]

Hi Cory,


Thanks for your advice.

Hmmm...I already run the script with MPI.
The attached script is a minimal sample.
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If I execute it, pvtu file is exported.
But the all piece sources are exactly same, and not partitioned.
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Magician


> On Nov 28, 2016, at 06:19, Cory Quammen <cory.quammen at kitware.com> wrote:
> 
> I think you need to run your script in parallel with MPI for the
> partitioning to work. See [1] for an example of how to use this
> filter.
> 
> Hope that helps,
> Cory
> 
> [1] http://www.vtk.org/gitweb?p=VTK.git;a=blob;f=Filters/Parallel/Testing/Cxx/DistributedData.cxx
> 
> On Sun, Nov 27, 2016 at 10:39 AM, Magician <f_magician at mac.com> wrote:
>> Does anyone use the vtkDistributedDataFilter?
>> 
>> 
>> On Nov 19, 2016, at 18:16, Magician <f_magician at mac.com> wrote:
>> 
>> Hi all,
>> 
>> 
>> I posted the message about partitioning datasets.
>> <http://public.kitware.com/pipermail/vtkusers/2016-November/097123.html>
>> 
>> I still trying vtk.vtkDistributedDataFilter(), but the exported data aren?t
>> partitioned.
>> My VTK version is 7.1.0 (pvpython with ParaView 5.2.0 RC3) and executing on
>> 2 CPUs.
>> 
>> Here is the sample code:
>> 
>>    import vtk
>> 
>>    source = vtk.vtkPointSource()
>>    source.SetCenter((0.0, 0.0, 0.0))
>>    source.SetNumberOfPoints(1000000)
>>    source.SetRadius(1.0)
>>    source.Update()
>> 
>>    d3 = vtk.vtkDistributedDataFilter()
>>    d3.SetInputData(source.GetOutput())
>>    d3.SetBoundaryMode(0)
>>    d3.Update()
>> 
>>    writer = vtk.vtkXMLPUnstructuredGridWriter()
>>    writer.SetInputData(d3.GetOutput())
>>    writer.SetFileName(?test.pvtu?)
>>    writer.SetNumberOfPieces(2)
>>    writer.WriteSummaryFileOn()
>>    writer.SetStartPiece(0)
>>    writer.SetEndPiece(1)
>>    writer.Write()
>> 
>> How to partition data?
>> 
>> 
>> Magician
>> 
>> 
>> 
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> 
> 
> 
> -- 
> Cory Quammen
> Staff R&D Engineer
> Kitware, Inc.