# Catalyst pause each timestep

**URL:** https://discourse.paraview.org/t/catalyst-pause-each-timestep/13769
**Category:** ParaView Support
**Created:** [January 22, 2024, 3:31pm UTC](https://discourse.paraview.org/t/catalyst-pause-each-timestep/13769 "2024-01-22T15:31:06Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Juan\_Jose\_Casafranca](https://discourse.paraview.org/user_avatar/discourse.paraview.org/juan_jose_casafranca/32/3499_2.png) [@Juan\_Jose\_Casafranca](https://discourse.paraview.org/u/Juan_Jose_Casafranca)
#### Post date: [January 22, 2024, 3:31pm UTC](https://discourse.paraview.org/t/catalyst-pause-each-timestep/13769/1 "2024-01-22T15:31:06Z")

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Is there any way to pause a Catalyst simulation at each timestep? I am using in situ visualization to analyze my simulation step by step, while I debug the code with a debugger, I it will be nice to be able to run a single simulation step