# Segmentation fault when running an NPT

**URL:** <https://gromacs.bioexcel.eu/t/segmentation-fault-when-running-an-npt/7661>\
**Category:** User discussions\
**Created:** [November 17, 2023, 10:46am UTC](https://gromacs.bioexcel.eu/t/segmentation-fault-when-running-an-npt/7661 "2023-11-17T10:46:16Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![FarzaneJP](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/farzanejp/32/1211_2.png) [@FarzaneJP](https://gromacs.bioexcel.eu/u/FarzaneJP)\
**Post date:** [November 27, 2023, 2:57pm UTC](https://gromacs.bioexcel.eu/t/segmentation-fault-when-running-an-npt/7661/2 "2023-11-27T14:57:03Z")

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This may help you find a solution: Introduction to [Membrane-Protein Simulation- GROMACS tutorial](https://gromacs.bioexcel.eu/t/new-gromacs-tutorials/6913)  
and a question: what happens if you remove pbc = xy part?

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_[View the full topic](https://gromacs.bioexcel.eu/t/segmentation-fault-when-running-an-npt/7661)._