...
Environment modules allow us to make multiple versions of the same software available on a single system. For example, a particular application may require GCC version 5.4 to compile correctly, while another may need version 6.1. Using environment modules, we can keep both versions on the same system, and users can switch between the two with minimal effort. We use the LMOD module software from TACC on Talapas. For information on using modules to load and unload software see our how-to guide on modules.
...