# AWH multiple .xvg files analysis

**URL:** <https://gromacs.bioexcel.eu/t/awh-multiple-xvg-files-analysis/12134>\
**Category:** User discussions\
**Tags:** analysis-tools, awh\
**Created:** [May 21, 2025, 5:57pm UTC](https://gromacs.bioexcel.eu/t/awh-multiple-xvg-files-analysis/12134 "2025-05-21T17:57:25Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![kimiasnn](https://avatars.discourse-cdn.com/v4/letter/k/71e660/32.png) [@kimiasnn](https://gromacs.bioexcel.eu/u/kimiasnn)\
**Post date:** [May 21, 2025, 5:57pm UTC](https://gromacs.bioexcel.eu/t/awh-multiple-xvg-files-analysis/12134/1 "2025-05-21T17:57:25Z")

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GROMACS version:gromacs-2023.4  
GROMACS modification: Yes

Dear All,

I ran an accelerated weighted histogram for 100 ns, and I want to analyze my data to calculate the potential of mean force (PMF). However, when I run:  
gmx\_mpi awh -f awh.edr -s awh.tpr -o awh\_pmf.xvg  
I get 10,000 awh\_pmf\_t\*.xvg files, and I don’t know how to analyze them. I would appreciate it if you could help me with how to get the PMF using the 10,000 xvg files.

P.S.: I ran AWH multiple times in the past, but I got only one file for my PMF, awh\_pmf.xvg.

All the best,

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**Author:** ![hess](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/hess/32/416_2.png) [@hess](https://gromacs.bioexcel.eu/u/hess)\
**Post date:** [June 5, 2025, 11:03am UTC](https://gromacs.bioexcel.eu/t/awh-multiple-xvg-files-analysis/12134/2 "2025-06-05T11:03:17Z")

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The is an evolution over time, all contaning cumulative data. The file with the latest time contains the most accurate results (taking into account the whole simulation).