[vtkusers] Partitioning Data

[Dominik Szczerba]

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I don't think this is intended to partition your mesh, or at least I
would be highly (if positively) surprised.

Do you not mean to partition a mesh for e.g. domain decomposition
purposes or other parallel applications? Then metis or chaco is what you
need here.

Dominik

Terry Jordan wrote:
> 
> I am trying to partition a unstructured grid into 4 evenly sized
> pieces.  Currently I am doing the following:
>  
> vtkXMLPUnstructuredGridWriter *writer =
> vtkXMLPUnstructuredGridWriter::New();
> writer->SetInput( filteredGrid );
> writer->SetFileName(vtkFilename);
> writer->SetNumberOfPieces( 4 );
> writer->SetStartPiece(0);
> writer->SetEndPiece(3);
> writer->Write();
>  
> filteredGrid is a vtkUnstructuredGrid
>  
> The result of this code is 4 copies of the data (1 pvtu and 4 vtu). 
> Each is identical to the original data.  What am I missing?  I am
> running this code on a single cpu without the use of MPI.  Do I have to
> use MPI?
>  
> Thanks in advance.
> 
> 
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