Telcon: 2020 07 16

Attendees

• Peter Scheibel (host)
• Vivek Kale (BNL)
• Christian Tacke

Agenda

• Can Spack customize runtime libraries?

  • Not right now: these are defined by the compiler you choose (and no further customization is possible).

• SOLLVE is identified as a Clang compiler now, does it need to be updated WRT https://github.com/spack/spack/pull/17525?

  • No: if it was identified and usable as a Clang compiler before, that will still be true after 17525

• On Cray, do I have to module load a compiler for Spack to find it with spack compiler find?

  • No: Spack will look through all available modules (regardless of whether they are loaded) to find compilers.

• How to test compilers?

  • In general, any package can implement a test function; packages have a run_tests attribute which is True when the user installs with spack install test=... where you can select test=root or test=all

• If you override a config section in an environment, you should not see it anywhere

  • Christian: provides an environment with packages and no compilers defined
  • Christian: you currently cannot specify a config directory with -C and use an environment at the same time
    • There is a PR for that