# Hydrogen Mass Repartitioning (HMR) MD tutorial

**URL:** <https://gromacs.bioexcel.eu/t/hydrogen-mass-repartitioning-hmr-md-tutorial/5258>\
**Category:** User discussions\
**Created:** [November 15, 2022, 3:11pm UTC](https://gromacs.bioexcel.eu/t/hydrogen-mass-repartitioning-hmr-md-tutorial/5258 "2022-11-15T15:11:20Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![gaurav.sharmapsit](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/gaurav.sharmapsit/32/1828_2.png) [@gaurav.sharmapsit](https://gromacs.bioexcel.eu/u/gaurav.sharmapsit)\
**Post date:** [November 15, 2022, 3:11pm UTC](https://gromacs.bioexcel.eu/t/hydrogen-mass-repartitioning-hmr-md-tutorial/5258/1 "2022-11-15T15:11:20Z")

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GROMACS version:  
GROMACS modification: Yes/No  
Here post your question

Hi, Is there any HMR tutorial available?

Best,  
Gaurav

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**Author:** ![jalemkul](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/jalemkul/32/18_2.png) [@jalemkul](https://gromacs.bioexcel.eu/u/jalemkul)\
**Post date:** [November 15, 2022, 3:35pm UTC](https://gromacs.bioexcel.eu/t/hydrogen-mass-repartitioning-hmr-md-tutorial/5258/2 "2022-11-15T15:35:58Z")

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`gmx pdb2gmx -heavyh` is all you need. There’s nothing specific about it that requires a detailed tutorial.