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Conference call notes 20180214

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ocaisa edited this page Feb 14, 2018 · 6 revisions

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Notes on the 95th EasyBuild conference call, Wednesday February 14th 2018 (5pm - 6pm CET)

Attendees

Alphabetical list of attendees (XXX):

  • Alan O'Cais (JSC, Germany)
  • Davide Vanzo (Vanderbilt University)
  • Javier Antonio Ruiz Bosch (HPC.CU)
  • Bart Oldeman (McGill University, Canada)
  • Shahzeb Siddiqui (Pfizer)
  • Åke Sangren (Umeå University, Sweden)
  • Adam Huffman (Big Data Institute, University of Oxford)
  • Victor Holanda (CSCS)

Agenda

  • Report on EasyBuild User Meeting
    • Lots of talks
    • About 40 people
  • Update on Tensorflow build
    • Very close to being merged
    • During the User Meeting Ake made it work with GPUs, tested on K80s
  • Adding vectorisation as default GCC option - https://github.com/easybuilders/easybuild-framework/pull/2388
    • Tough call to make a default
    • Intel vectorises by default, big deal on newer archs
      • Default (now) is to be conservative for AVX512, use AVX2 unless there is benefit
    • Kicks in at -O3 for GCC
    • Maybe a configuration setting? Will likely be ignored by most
    • GROMACS speeds up when dropping from -O2 to -O1 with Intel at CSCS and may be related to vectorisation
      • GROMACS manually vectorised
      • GROMACS may be a good candidate for lowopt option
    • Keep the discussion going in the ticket
  • Adding a builddeps bundle as part of a toolchain (see discussion on the mailing list)
    • For Cray this doesn't help at all
      • Could just use --filter-deps on the bundle
  • Allow basic compiler modulenames to be specified as keys in optarch - https://github.com/easybuilders/easybuild-framework/pull/2387
  • Update on Singularity integration - https://github.com/easybuilders/easybuild-framework/pull/2332
    • Pretty feature complete
    • Outputs singularity recipes
      • Building a container requires su
    • Bootstrap design at present, incrementally building a toolchain stack
      • Available on Singularity Hub
      • GCC does not build there (probably because it takes too much time, recipe works locally)
    • Beginnings of a recipe repo at https://github.com/easybuilders/eb-singularity
    • Current focus is to build a toolchain container that allows people to build applications on top
      • Not (currently) intended to house a spectrum of toolchains
  • Q&A

Notes

Report on EasyBuild User Meeting
Other
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