# How to synchronize vtkMultiDataSet between processes

**URL:** https://discourse.paraview.org/t/how-to-synchronize-vtkmultidataset-between-processes/6357
**Category:** ParaView Support
**Created:** [February 1, 2021, 2:29pm UTC](https://discourse.paraview.org/t/how-to-synchronize-vtkmultidataset-between-processes/6357 "2021-02-01T14:29:17Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![sharon](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/s/67e7ee/32.png) [@sharon](https://discourse.paraview.org/u/sharon)
#### Post date: [February 1, 2021, 2:29pm UTC](https://discourse.paraview.org/t/how-to-synchronize-vtkmultidataset-between-processes/6357/1 "2021-02-01T14:29:17Z")

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Dear Experts,

I need synchronize vtkMultiBlockDataSet (only contains vtkPolyData) between different processes, i know this is a common practices, but i dont know how to do it in a elegant way?  
I found vtkMultiProcessController::Broadcast only do a shallow copy but no any content inside…

Any suggestions?  
Any good examples will be much appreciated!

Thanks and Best Regards,  
Sharon