Pegasus Software Modules¶
IDSC ACS continually updates applications, compilers, system libraries, etc.
To facilitate this task and to provide a uniform mechanism for accessing
different revisions of software, ACS uses the modules utility. At login,
modules commands set up a basic environment for the default compilers,
tools, and libraries such as: the $PATH, $MANPATH, and
$LD_LIBRARY_PATH environment variables. There is no need to set them
or update them when updates are made to system and application software.
From Pegasus, users can view currently loaded modules with module list and check available software with module avail *package* (omitting the package name will show all available modules). Some modules are loaded automatically upon login:
[username@pegasus ~]$ module list
Currently Loaded Modulefiles:
1) perl/5.18.1(default) 2) python/2.7.3(default) 3) gcc/4.4.7(default) 4) share-rpms65
[username@pegasus ~]$ module avail R
---------------------- /share/Modules/general ----------------------
R/2.15.2 R/3.1.2(default) R/3.3.1
[username@pegasus ~]$ module load R
[username@pegasus ~]$ module list
Currently Loaded Modulefiles:
1) perl/5.18.1(default) 2) python/2.7.3(default) 3) gcc/4.4.7(default) 4) share-rpms65 5) R/3.1.2(default)
The table below lists commonly used modules commands.
| Command | Purpose |
|---|---|
module avail |
lists all available modules |
module list |
list modules currently loaded |
module purge |
restores original setting by unloading all modules |
module load package |
loads a module e.g., the python package |
module unload package |
unloads a module e.g., the python package |
module switch old new |
replaces old module with new module |
module display package |
displays location and library information about a module |
See our Policies page for minimum requirements and more information.