Conference notes for 2022 12 06

Agenda for Lmod Zoom Mtg Dec. 06, 2022

• Q/A
• Quick overview of SC
• Xavier's idea about virtual modulepath
• How to handle blocking users from unloading dependent modules
• Presentation on how Lmod deals with tricky TCL modulefiles issues

Attendies

Robert McLay (TACC)

Notes

• Ideas on how to handle blocking users from unloading dependent modules

  • Add Variable LMOD_BLOCK_UNLOADING_DEPENDENT_MODULES to Makefile.in, src/Configuration.lua aclocal.m4 etc
  • In src/Hub.lua modify routine M.unload()
    • Check for empty stack size
    • Check for non-zero ref_count in moduleTable

• SC:

  • Talked with a bunch of people about Lmod and XALT

• Xavier's idea about using a virtual path for supporting thing like spack load

• Issue 613: (see https://github.com/TACC/Lmod/issues/613)

  • The issue is that normal setenv() also does a setenv in the current env.
  • The spider cache update does not
  • setenv("YALES2_HOME", pathJoin(os.getenv("VSC_SCRATCH"), "yales2")) prepend_path("MODULEPATH", pathJoin(os.getenv("YALES2_HOME"), "modules"))
  • Lmod will have to change to let setenv, pushenv change the local env.
  • It will also have to restore the original environment after "spider" loading each modulefile.