# vtkExodusIIReader: How to Output a Partitioned Dataset Instead of a Multiblock

**URL:** https://discourse.paraview.org/t/vtkexodusiireader-how-to-output-a-partitioned-dataset-instead-of-a-multiblock/17043
**Category:** Development
**Tags:** exodus, python
**Created:** [August 4, 2025, 3:05pm UTC](https://discourse.paraview.org/t/vtkexodusiireader-how-to-output-a-partitioned-dataset-instead-of-a-multiblock/17043 "2025-08-04T15:05:11Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![GeoMomo](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/g/e95f7d/32.png) [@GeoMomo](https://discourse.paraview.org/u/GeoMomo)
#### Post date: [August 4, 2025, 3:05pm UTC](https://discourse.paraview.org/t/vtkexodusiireader-how-to-output-a-partitioned-dataset-instead-of-a-multiblock/17043/1 "2025-08-04T15:05:11Z")

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Dear All,

This post follows up on Mathieu Westphal’s publication regarding the transition from multiblock structures to partitioned datasets: ([Transition from multiblock to partitioned datasets in VTK and ParaView, a complete guide](https://discourse.paraview.org/t/transition-from-multiblock-to-partitioned-datasets-in-vtk-and-paraview-a-complete-guide/12061))  
In that post, it is suggested that using partitioned datasets is preferable to using multiblocks, particulalry to avoid depreciation.

In my case, I’m working with ExodusII files, which I read using the vtkExodusIIReader() class. When I call GetOutput(), it returns a multiblock dataset.

My questions are:

- Is there a way to directly obtain a partitioned dataset instead of a multiblock from this reader?

- If so, which command(s) should be used to achieve that?

Any guidance is much appreciated.

Thank you very much !

Momo

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [August 4, 2025, 3:08pm UTC](https://discourse.paraview.org/t/vtkexodusiireader-how-to-output-a-partitioned-dataset-instead-of-a-multiblock/17043/2 "2025-08-04T15:08:35Z")

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Hello @GeoMomo

Use vtkIOSSReader instead of vtkExodusIIReader.

Best,

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### Author: ![GeoMomo](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/g/e95f7d/32.png) [@GeoMomo](https://discourse.paraview.org/u/GeoMomo)
#### Post date: [August 4, 2025, 3:41pm UTC](https://discourse.paraview.org/t/vtkexodusiireader-how-to-output-a-partitioned-dataset-instead-of-a-multiblock/17043/3 "2025-08-04T15:41:57Z")

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Thank you for your quick response !