# Error while running ParaView in parallel with more than 200 cores

**URL:** https://discourse.paraview.org/t/error-while-running-paraview-in-parallel-with-more-than-200-cores/8229
**Category:** ParaView Support
**Created:** [October 21, 2021, 5:51am UTC](https://discourse.paraview.org/t/error-while-running-paraview-in-parallel-with-more-than-200-cores/8229 "2021-10-21T05:51:19Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![omid](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/o/2bfe46/32.png) [@omid](https://discourse.paraview.org/u/omid)
#### Post date: [October 21, 2021, 5:51am UTC](https://discourse.paraview.org/t/error-while-running-paraview-in-parallel-with-more-than-200-cores/8229/1 "2021-10-21T05:51:19Z")

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Hi,

Is there a limitation on the number of cores when multicore postprocessing is used?  
I have been successfully using parallel postprocessing with less than 200 cores. However, when I increase the number of cores I get various errors similar to this for different libraries:

error while loading shared libraries: libvtkh5part-pv5.8.so.1: cannot open shared object file: No such file or directory

Then, ParaView loads in serial mode with this warning:

Generic Warning: In /home/buildslave/dashboards/buildbot/paraview\_release-pvbinsdash-linux-shared-release\_superbuild/build/superbuild/paraview/src/Remoting/ServerManager/vtkSMSession.cxx, line 288  
Failed to automatically launch ‘pvserver’ for multi-core support. Defaulting to local session.

I would appreciate any comments or experience in solving this issue.