Lmod

Pre-Requisites

lua-bitop
lua-filesystem
lua-posix
lua-term

1) Initialization Script must be sourced

source /opt/lmod/lmod/init/bash

2) MODULESHOME Environment Variable must be set to Root Directory of Modules Tree Example:

export MODULESHOME=/opt/lmod/modulefiles/ola02

3) MODULEPATH Environment Variable must be set to First-Level Directory of Modules Tree Example:

export MODULEPATH=${MODULESHOME}/level0

Lmod Modulefiles have two specificities compared to Environment Modules Modulefiles:

Language is LUA and not TCL (but TCL is properly understood as well for easier compatibility)
Modulefiles are organized as a hierarchy

Module Files Hierarchy:

Level #1: Modules for software components that do not depend on compiler environment
Level #2: Modules for software components that depend on compiler environment ONLY
Level #3: Modules for software components that depend on compiler environment AND MPI library

List Available Modules:

ml avail

Load / Unload Module:

ml <module>
ml unload <module>

List Loaded Modules:

ml list

Switch from to = Unload and Load :

ml switch <module 1> <module 2>

Unload All Loaded Modules (Purge Environment):

ml purge

Create a '.version' hidden file inside the directory of the module
Set default module version inside the '.version' file:
```
#%Module
set ModulesVersion "13.1.5"
```

Save Currently Loaded Modules:

module save

Configuration File:

~/.lmod.d/default

Restore Default Modules:

module restore