# Parallel Problem in Activiz

**URL:** https://discourse.vtk.org/t/parallel-problem-in-activiz/15478
**Category:** Development
**Tags:** code
**Created:** [April 6, 2025, 3:30am UTC](https://discourse.vtk.org/t/parallel-problem-in-activiz/15478 "2025-04-06T03:30:23Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![LucasGandel](https://discourse.vtk.org/user_avatar/discourse.vtk.org/lucasgandel/32/1831_2.png) [@LucasGandel](https://discourse.vtk.org/u/LucasGandel)
#### Post date: [April 7, 2025, 7:11am UTC](https://discourse.vtk.org/t/parallel-problem-in-activiz/15478/3 "2025-04-07T07:11:05Z")

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Both Activiz and VTK are not thread safe. This issue was discussed in this thread: [GetConstructorInfo exception on multiple thread](https://discourse.vtk.org/t/getconstructorinfo-exception-on-multiple-thread/12753).  
We have a partial solution to improve this, please reach out to me directly if you want to discuss how we could work together to add this to the next Activiz release.

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_[View the full topic](https://discourse.vtk.org/t/parallel-problem-in-activiz/15478)._