Conference notes for 2022 01 11

Agenda For Lmod Zoom Mtg 16:30 UTC 2022 01 11

• Question and Answers
• Presentation on How Lmod Collections work
• Brief Discussion on module properties were added to the isVisible Hook (issue #552) -- This is likely to be a more detailed discussion for a later meeting.
• Spider output when descriptions are not the same (Issue #551) (E.G. cpu vs. gpu descriptions

Attendees

• Kenneth Hoste (HPC-UGent, Belgium)
• Robert McLay (TACC)
• Åke Sandgren (Umeå University, Sweden)
• Kurt Lust (Univ of Antwerp, Belgium + LUMI User Support Team)
• Joey Dumont (Government of Canada)

Notes

• slides: https://github.com/TACC/Lmod/blob/master/my_docs/22/lmod_zoom_mtg_2022_01_11/presentation.pdf

Lmod collections

• Q: Would it make sense to add another feature to Lmod to take a "snapshot" of the current environment (controlled by Lmod), and ignore changes to module files?
  • Already possible by capture output of "lmod bash load" into a script
  • and using sh_to_modulefile you could easily create a module file to restore that environment

Module properties in isVisible hook

• cfr. request by Ward to explain how this was supported in more detail
• (will be discussed next time)

Spider output with different descriptions

• support for "generic description" that's show in output of "module spider" if it's there?

• suggestion by Åke: separate place to specify a single line of "feature" info for specific modules, that could be show next to or below each "hierarchy set"

• line that says "load all modules on any of these lines" is often misinterpreted

  • maybe should be rephrased to say "one (and only one) of these lines"

Q&A

• problems with $FPATH variable that causes trouble with zsh (cfr. https://github.com/TACC/Lmod/issues/555)

• Robert is giving a talk on Lmod + XALT at EasyBuild User Meeting on 27 Jan 2022; see https://easybuild.io/eum22/#lmod-xalt

Next meeting

• planned for Tue 8 Feb 2022 (15:30 UTC)
  • 2nd Tuesday rather than 1st Tuesday, by exception
• future topics:
  • Lmod testing
  • How to pass module info to hooks
    • how support for properties was implemented in isVisible hook
  • More internals of Lmod