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Telcon: 2020 07 16

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Dr. Christian Tacke edited this page Jul 16, 2020 · 10 revisions

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
    • Also one can have dedicated test packages: Like fabtests. It is doing infiniband tests. They're run for after install if test=root/all is select. In addition all the tests are install into bin/ so that they can be run at any later time.

  • 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
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