# Error in Gromacs 2022.3 installation

**URL:** <https://gromacs.bioexcel.eu/t/error-in-gromacs-2022-3-installation/5639>\
**Category:** User discussions\
**Tags:** installation-error\
**Created:** [January 24, 2023, 9:16am UTC](https://gromacs.bioexcel.eu/t/error-in-gromacs-2022-3-installation/5639 "2023-01-24T09:16:06Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Narges](https://avatars.discourse-cdn.com/v4/letter/n/7993a0/32.png) [@Narges](https://gromacs.bioexcel.eu/u/Narges)\
**Post date:** [January 24, 2023, 9:16am UTC](https://gromacs.bioexcel.eu/t/error-in-gromacs-2022-3-installation/5639/1 "2023-01-24T09:16:06Z")

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Hello all,

In GROMACS installation in a cluster, after running the command:

‘cmake … -DGMX\_BUILD\_OWN\_FFTW=ON -DREGRESSIONTEST\_DOWNLOAD=ON’

I have faced the error (attached pictures).

I would be thankful if you could help me to fix it.

 ![1](https://europe1.discourse-cdn.com/flex017/uploads/bioexcel1/original/2X/e/e6e407375b90176186bc2d67e340975a9f64143f.png)  
 ![2](https://europe1.discourse-cdn.com/flex017/uploads/bioexcel1/original/2X/f/fb8e2ef4f87e2c58038a145e071ea90ce60ff4ee.png)

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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:** [January 24, 2023, 11:19am UTC](https://gromacs.bioexcel.eu/t/error-in-gromacs-2022-3-installation/5639/2 "2023-01-24T11:19:52Z")

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Hello.

That looks like an intermittent network error when downloading regression test data.

You can either retry the same command again (at least right now, on our side, the [https://ftp.gromacs.org](https://ftp.gromacs.org) server is working fine) or omit the `-DREGRESSIONTEST_DOWNLOAD=ON` flag from the CMake call.

Regression test data can be downloaded manually later, it is not strictly required for building GROMACS.