# Preparing volumetric data for parallel rendering

**URL:** https://discourse.paraview.org/t/preparing-volumetric-data-for-parallel-rendering/5875
**Category:** ParaView Support
**Created:** [November 24, 2020, 6:06am UTC](https://discourse.paraview.org/t/preparing-volumetric-data-for-parallel-rendering/5875 "2020-11-24T06:06:34Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Nicholas\_Yue](https://discourse.paraview.org/user_avatar/discourse.paraview.org/nicholas_yue/32/5203_2.png) [@Nicholas\_Yue](https://discourse.paraview.org/u/Nicholas_Yue)
#### Post date: [November 24, 2020, 6:06am UTC](https://discourse.paraview.org/t/preparing-volumetric-data-for-parallel-rendering/5875/1 "2020-11-24T06:06:34Z")

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Hi

When preparing (volume) data for use in parallel rendering via pvti files  
do we need to know ahead the number of GPU workstations we will have  
or does the meta data in pvti allows Paraview/pvserver to (re)partition  
as required when it is loading up the data ?

Do we need to match the Pieces count with the MPI Rank ?

Cheers