# Adding external gpu force to gromacs result in energy conservation problem

**URL:** <https://gromacs.bioexcel.eu/t/adding-external-gpu-force-to-gromacs-result-in-energy-conservation-problem/13027>\
**Category:** Developers discussions\
**Tags:** forcefield, mdrun\
**Created:** [December 9, 2025, 12:36pm UTC](https://gromacs.bioexcel.eu/t/adding-external-gpu-force-to-gromacs-result-in-energy-conservation-problem/13027 "2025-12-09T12:36:07Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![al42and](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/al42and/32/1393_2.png) [@al42and](https://gromacs.bioexcel.eu/u/al42and)\
**Post date:** [December 9, 2025, 1:58pm UTC](https://gromacs.bioexcel.eu/t/adding-external-gpu-force-to-gromacs-result-in-energy-conservation-problem/13027/3 "2025-12-09T13:58:31Z")

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> [@lmullender](#):
>
> As an aside, this should probably be moved to the developers discussions. @al42and , do you mind?

Done. Also, consider [the developer meeting tomorrow](https://gromacs.bioexcel.eu/t/december-10th-bi-weekly-gromacs-developer-meeting-evening-edition/12999) (if that works for your timezone)

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