# Problems with a martini run in gromacs

**URL:** <https://gromacs.bioexcel.eu/t/problems-with-a-martini-run-in-gromacs/3064>\
**Category:** User discussions\
**Created:** [November 1, 2021, 5:22pm UTC](https://gromacs.bioexcel.eu/t/problems-with-a-martini-run-in-gromacs/3064 "2021-11-01T17:22:50Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![DanielSV](https://avatars.discourse-cdn.com/v4/letter/d/e8c25b/32.png) [@DanielSV](https://gromacs.bioexcel.eu/u/DanielSV)\
**Post date:** [November 1, 2021, 5:22pm UTC](https://gromacs.bioexcel.eu/t/problems-with-a-martini-run-in-gromacs/3064/1 "2021-11-01T17:22:50Z")

</div>

GROMACS version: 5.1.5  
GROMACS modification: No  
Here post your question

I am trying to calculate the MD simulation of a protein in a membrane, using the martini force field. The charmm-gui server produces several steps, two of which are minimizations. When running the whole set of procedures, the program stops after the first minimization. It doesn´t write the files necessary for the second minimization. I don´t know what would be the source of the problem. Although it complains about the number of steps, I don´t believe it is the source of the problem. Being a new user, I am unable to upload the necessary files for your perusal. How could I upload these files

Thanks in advance

---

<div class="post-metadata">

**Author:** ![alevilla](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/alevilla/32/439_2.png) [@alevilla](https://gromacs.bioexcel.eu/u/alevilla)\
**Post date:** [November 5, 2021, 1:50pm UTC](https://gromacs.bioexcel.eu/t/problems-with-a-martini-run-in-gromacs/3064/2 "2021-11-05T13:50:28Z")

</div>

Hi,  
Please report the error you get at the end of the minimization. Or any warnings you get in the preprocessing phase. Also I noticed that you run with an old version of GROMACS, check that your input files are compatible with GROMACS version, or install the current GROMACS version.  
\Alessandra