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Admin Guide Module Systems - Revision history
2026-06-02T02:41:55Z
Revision history for this page on the wiki
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https://hpc-wiki.info/hpc/index.php?title=Admin_Guide_Module_Systems&diff=4505&oldid=prev
Mukund-pondkule-6a11@uni-paderborn.de at 18:12, 9 December 2020
2020-12-09T18:12:37Z
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Mukund-pondkule-6a11@uni-paderborn.de
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Robert-schade-e757@uni-paderborn.de at 15:44, 2 November 2020
2020-11-02T15:44:50Z
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Robert-schade-e757@uni-paderborn.de
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Robert-schade-e757@uni-paderborn.de at 14:44, 2 November 2020
2020-11-02T14:44:07Z
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Robert-schade-e757@uni-paderborn.de
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Robert-schade-e757@uni-paderborn.de: Author Sebastian Potthoff
2020-10-31T17:41:49Z
<p>Author Sebastian Potthoff</p>
<p><b>New page</b></p><div>[[Category:HPC-Admin]]<br />
[[Category:HPC.NRW-Best-Practices]]<br />
<br />
= Software =<br />
<br />
* [https://lmod.readthedocs.io/en/latest/ LMOD]<br />
** Actively developed<br />
** Integrated by EasyBuild<br />
** In-build module usage tracking<br />
** Support for different module naming schemes<br />
** Supported languages: Lua and TCL<br />
** Installation via [https://openhpc.community/ OpenHPC] repository package<br />
* Alternative: [http://modules.sourceforge.net/ Environment Modules]<br />
** Stale development<br />
** Since 2018 new maintainer<br />
** Supported languages: TCL<br />
<br />
= Naming Conventions =<br />
<br />
We are employing a so-called [https://easybuilders.github.io/easybuild/files/hust14_paper.pdf hierarchical module naming scheme]. This means that only those modules are shown to the user which '''can''' be loaded based on the current user environment.<br />
<br />
Example: A user wants to load the module '''GROMACS''' which depends on the '''GCC''' compiler and open '''OpenMPI''' library. By default the user can only see the GCC module: 1. module load GCC –&gt; now the OpenMPI module is visible 2. module load OpenMPI –&gt; now the GROMACS module is visible 3. module load GROMACS<br />
<br />
= Module Usage Tracking =<br />
<br />
* Tracking of module usage can directly be integrated into LMOD –&gt; see https://lmod.readthedocs.io/en/latest/300_tracking_module_usage.html<br />
* Rquirements: MariaDB (MySQL) and rsyslog functionality<br />
* '''NOTE:''' Clone the [https://github.com/TACC/Lmod git repository] and look into the folder <code>contrib/tracking_module_usage</code> to find the examples and scripts described in the guide above<br />
<br />
= Deprecated Modules =<br />
<br />
* Create a separate software stack every 6 to 12 months and create ''meta'' modules for the users to explicitly load a specific ''year'' –&gt; e.g. <code>module load 2020a</code><br />
* This way, users get a feeling for how old their used software is<br />
* You can easily deprecate older software stacks by just deleting the meta module but at the same time keep the software stack for archival purposes<br />
* Module trees do not get cluttered</div>
Robert-schade-e757@uni-paderborn.de