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Conference call notes 20160706

Kenneth Hoste edited this page Jul 6, 2016 · 4 revisions

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Notes on the 55th EasyBuild conference call, Wednesday July 6th 2016 (5pm - 5.30pm CET)

Attendees

Alphabetical list of attendees (6):

  • Damian Alvarez (JSC, Germany)
  • Pablo Escobar (sciCORE, UniBas, Switzerland)
  • Markus Geimer (JSC, Germany)
  • Kenneth Hoste (HPC-UGent)
  • Alan O'Cais (JSC, Germany)
  • Robert Schmidt (OHRI, Canada)

Agenda

  • update on next EasyBuild release (v2.8.2)
  • discussion on EasyBuild in OpenHPC & Intel HPC Orchestrator
  • jhbuild for X11 software stack
  • Q&A

Notes

EasyBuild v2.8.2
OpenHPC
jhbuild
  • https://developer.gnome.org/jhbuild/stable/
  • used by GNOME & Qt
  • X-desktop: ~250 packages
  • by default: installs latest master branch of all packages
    • but can also specify specific date
    • still vulnerable to build issues
    • several dates tried by Alan, only 20151231 really worked (243 packages)
  • supports blacklisting of packages
  • will require a custom easyblock
    • 'special' download step
    • custom config file
  • also supports pre-downloading sources (nobuild in config file)
  • check with jhbuild community if installs can be done version-locked, i.e. with proper releases
  • pkgconfig should also be added as a build dep
  • see also recent PR by Ward on fixing lots of (build) dep issues: https://github.com/hpcugent/easybuild-easyconfigs/pull/3222
Q&A
  • Markus: support for Lmod family/properties
  • Markus: issues with --try-* and --job
  • Markus: using of modules for system tools in different location than EB install prefix?
    • should work fine
    • for HMNS, you should use --subdir-user-modules to properly extend $MODULEPATH
  • Markus: support for hiding toolchains
    • https://github.com/hpcugent/easybuild-framework/pull/1683
    • converged on a good solution?
    • should robot always consider hidden module as a fallback when resolving deps?
    • summary:
      • add support for hidden = True in easyconfig files (equivalent to --hidden)
      • add support for hiding toolchain (via --hide-deps and listing toolchain in hiddendependencies)
      • make robot consider hidden modules as fallback when resolving deps (and make it configurable)
        • find_resolved_modules in robot.py
  • Damian: CEA.fr is also using EasyBuild
    • they have a wrapper to decouple app from MPI runtime: e.g. Intel MPI vs OpenMPI
    • can help with having a single installation, compatible with different MPI stacks
      • => basically remove one level of the hierarchy
    • compatible with MPI 1.3, MPI 2 support by Sept
    • open source soon?
    • performance impact? no real numbers yet
    • probably higher impact on calls with small message sizes (increases latency)
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