Environment Modules

Environment modules allow users to load and unload specific versions of a program (e.g. gcc, spades, openmpi, etc.). The module commands (below) essentially just prepend a directory to your PATH variable.

Use modules from certain repository

There are two main groups of modules on Charlie.

1. Bigelow: Modules for everyone to use
2. SCGC: Available to use; maintained by SCGC

$ module use /mod/bigelow

See what's available

$ module avail

--------------------- /mod/bigelow/ ---------------------
gcc/6.2.0      null           python/3.0     smrt/2.3.0
metaBAT/0.32.4 openmpi/2.1.1  R/2.15.2       turbomole/7.1

Load a module

$ module load openmpi

Show loaded modules

$ module list
Currently Loaded Modulefiles:
  1) /openmpi/2.1.1   2) /gcc/6.2.0

Unload a module

module unload openmpi