Five

• Today was SciCat. Which was great, but I, once again went off to talk to somebody else :(

  • SciCat fiddling to come later.

• DST - Data Systems and Technologies

  • Jesper Rude Selknaes (mailto:Jesper.RudeSelknaes@esss.se)

  • 2018 became group leader

  • Bought a machine with 2 A100 machines. Waiting for scientists to justify their use.

  • Provide the infrastructure for scientific computing (compute and network).

    • HPC
      • Slurm cluster (4000 cores)
      • ZFS (0.5PB slow storage)
      • Two 850TB systems, scalable gpfs (spectrum scaler)
    • OpenStack
    • 1Gb/10Gb/25Gb/100Gb/200Gb HDR Infiniband.
    • 40Gb is bad because the lane speed doesn’t match.
    • Puppet / Foreman is used for deploy/CM
    • When you write an HDF5 file you write some blocks, then meta data, then blocks, then meta data, etc.
      • Might have to work on a driver for hdf5 stuff as the way IO is handled is sub optimal?
    • History
      • When they started the ESS stood up their own AD
      • When DMSC started they stood up an LDAP
      • They are working on merging. Hopefully it’ll go smoothly.
    • ESS has 650-700 workers
    • The plan now, how risk is mitigated, and the plan in general is much more credible.
    • “we would like to put as much of the infrastructure into the same place as possible”

  • DRAM - Data Reduction and Modeling

    • Contact (Acting Group Leader)
      • https://europeanspallationsource.se/profile/torben-roland-nielsen
    • SciPP
    • SasView
    • BornAgain
    • EasyScience
    • nCrystal
      • openMC
    • McStas McStasScript

• ECDC - Experimental Control and Data Curation

  • https://europeanspallationsource.se/profile/tobias-richter
  • Software
    • Kafka
    • EFU (Event formation unit)
    • File Writers
    • EPICS
  • SWAP team is here

• ICS - Instrument Control Systems(? didn’t get to talk about this, so could be wrong.)

• Cool Tools

  • HDF5 Viewer in VSCode
    • https://marketplace.visualstudio.com/items?itemName=h5web.vscode-h5web

• Thoughts

  • It would likely make sense to put Alex Scheinker in touch with Jesper Selknaes about maybe testing the ML approach with the ESS beam? coming up?….
    • https://www.lanl.gov/search-capabilities/profiles/alexander-scheinker.shtml
    • Check into cross-lab/cross-country collaboration?

• Max 4

  • SciDog
  • SciFish
  • (There are many Sci) This should be enhanced.