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On eRI we make software available using environment modules, sometime also referred to as lmod. This article describes how to use the module command to find, load and purge software.

Environment Modules

Modules are a convenient way to provide access to applications on the cluster. They prepare the environment you need to run an application.

For a full list of module commands run man module or visit the lmod documentation here.

module avail

Lists all available modules.

module spider [module name]

Searches available modules for [module name]

module show [module name]

Shows information about [module name]

module load [module name]

Loads [module name]

module list [module name]

Lists currently loaded modules.

module purge

Purge (remove) all modules from your environment

For example, if you want to use the R programming language you would:

$ module load R/4.3.2-foss-2023a

This will load all of the software and dependencies required to run Rversion 4.3.2. To see the list of software loaded when you run the above command you can run the module list command:

$ module list

Currently Loaded Modules:
  1) GCCcore/12.3.0                  19) ncurses/6.4-GCCcore-12.3.0
  2) zlib/1.2.13-GCCcore-12.3.0      20) libreadline/8.2-GCCcore-12.3.0
  3) binutils/2.40-GCCcore-12.3.0    21) libpng/1.6.40-GCCcore-12.3.0
  4) GCC/12.3.0                      22) libxml2/2.11.4-GCCcore-12.3.0
  5) numactl/2.0.16-GCCcore-12.3.0   23) SQLite/3.42.0-GCCcore-12.3.0
  6) UCX/1.14.1-GCCcore-12.3.0       24) OpenSSL/1.1
  7) UCC/1.2.0-GCCcore-12.3.0        25) cURL/8.3.0-GCCcore-12.3.0
  8) OpenMPI/4.1.5-GCC-12.3.0        26) NLopt/2.7.1-GCC-12.3.0
  9) OpenBLAS/0.3.23-GCC-12.3.0      27) GMP/6.2.1-GCCcore-12.3.0
 10) FlexiBLAS/3.3.1-GCC-12.3.0      28) Java/20.0.2
 11) FFTW/3.3.10-GCC-12.3.0          29) libgit2/1.6.4-GCC-12.3.0
 12) gompi/2023a                     30) nodejs/18.18.2-GCCcore-12.3.0
 13) FFTW.MPI/3.3.10-gompi-2023a     31) freetype/2.13.2-GCCcore-12.3.0
 14) ScaLAPACK/2.2.0-gompi-2023a-fb  32) HarfBuzz/4.4.1-GCC-12.3.0
 15) foss/2023a                      33) FriBidi/1.0.12-GCC-12.3.0
 16) bzip2/1.0.8-GCCcore-12.3.0      34) LibTIFF/4.4.0-GCCcore-12.3.0
 17) XZ/5.4.2-GCCcore-12.3.0         35) R/4.3.2-foss-2023a
 18) PCRE2/10.42-GCCcore-12.3.0

Working with containers

Singularity

Available as Apptainer and aliasing enabled, both apptainer --version and singularity --version will work.

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