# Nonbonded interactions on the GPU

**URL:** <https://gromacs.bioexcel.eu/t/nonbonded-interactions-on-the-gpu/1033>\
**Category:** User discussions\
**Created:** [November 2, 2020, 1:16am UTC](https://gromacs.bioexcel.eu/t/nonbonded-interactions-on-the-gpu/1033 "2020-11-02T01:16:27Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![pjohansson](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/pjohansson/32/316_2.png) [@pjohansson](https://gromacs.bioexcel.eu/u/pjohansson)\
**Post date:** [November 2, 2020, 8:30am UTC](https://gromacs.bioexcel.eu/t/nonbonded-interactions-on-the-gpu/1033/2 "2020-11-02T08:30:07Z")

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Hello,

the error message indicates that Gromacs was not built with GPU support. Did you compile it yourself and specify `-DGMX_GPU=on` when running `cmake` (as per the [installation guide](http://manual.gromacs.org/current/install-guide/index.html)), or get it from the Ubuntu repositories?

If the latter, try compiling it yourself.

Regards,  
Petter

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