ParaView/ParaView Readers and Parallel Data Distribution: Difference between revisions

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| [http://paraview.org/OnlineHelpCurrent/LegacyVTKFileReader.html Legacy VTK reader]
| [http://paraview.org/OnlineHelpCurrent/LegacyVTKFileReader.html Legacy VTK reader]
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<notes on how this reader loads data in parallel>
This file format has no support for saving parallel distribution of data. Hence ParaView does the following:
 
'''Structured Data'''
----
For structured data, this reader reads the entire file on all processes and then '''crops''' the structured extents on each process so that for each process, the filters downstream process a block of  the structured data alone.
 
'''Unstructured Data'''
----
The root node reads the entire file and then the data is distributed  to all processes (using MPI) after an internal partitioning algorithm (vtkTransmitUnstructuredGridPiece or vtkTransmitPolyDataPiece).
 
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Time supported only as a file series.
Time supported only as a file series.
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Revision as of 14:21, 7 March 2013

Under Development
File Extension Format Description Reader Parallelism Time
*.vtk Legacy VTK Files Legacy VTK reader

This file format has no support for saving parallel distribution of data. Hence ParaView does the following:

Structured Data


For structured data, this reader reads the entire file on all processes and then crops the structured extents on each process so that for each process, the filters downstream process a block of the structured data alone.

Unstructured Data


The root node reads the entire file and then the data is distributed to all processes (using MPI) after an internal partitioning algorithm (vtkTransmitUnstructuredGridPiece or vtkTransmitPolyDataPiece).

Time supported only as a file series.