LHCONE R&D and RNT-WG call

Europe/Zurich
Edoardo Martelli (CERN), Joe Mambretti (International Center for Advanced Internet Research Northwestern University), Marian Babik (CERN), Shawn Mc Kee (University of Michigan (US))
Zoom Meeting ID
97610360540
Host
Edoardo Martelli
Useful links
Join via phone
Zoom URL
    • 17:00 17:20
      Preparation of SC23 demos and DC24 mini-challenges 20m
    • 17:20 17:40
      RNTWG 20m

      SC23 status:
      - Latest connection schema proposed by Tom attached to the agenda
      - DTNs: Starlight (ready/have access), KIT (ready), CERN (ready but needs re-install), UVic (in prep ?),
      - Collectors: ESnet (ready) - Andy working on it this week, collector is up and already receiving some sample fireflies with netlink data 
      - Dashboards: CERN Grafana/Prometheus ready (Marian); 
                                CERN P4 probably not going to happen as we're facing issues with port mirroring (ticket was filed with Juniper)
                                R&E dashboard -  will be added to CERN Grafana using ES at ESnet
                                InMon dashboard TBD 
      - High-touch: visualisation (in prep) - python workbook was shared by Yatish
      - UCSD/Caltech interested to enable packet marking on their Kubernetes XRootd cluster (working with them to test this in the development cluster first)

      RNTWG packet marking - list of activities:
      - Collectors developments (needed):
      .    - flowd extension to send netlink data (in testing for update fireflies; for "end" fireflies needs some R&D in time series data compression)
           - access to GEANT data source to check if we could show utilisation + fireflies side by side
           - what would be interesting to see in the R&E dashboard ? (see https://github.com/scitags/flowd#example-4 for list of avail. metrics)
      .    - dashboard to show netlink data coming from flowd 
           - forwarding fireflies to another collector
      - Storage and transfers developments
           - dCache (needs testing)
           - Rucio - scitags support ready in 32.4.0 (interface to FTS still to be done - but should be easy)
           - FTS/gfal2 - scitags support ready in FTS 3.12.11 and GFAL2 2.22.0
           - flowd in EPEL (no progress)

      - R&D 
           - Use HBH option (instead of flow label) 
                  - Extension header reachability/drop rate study needed   
                  - Find ways how to implement HBH in Linux and eBPF
      - Others:
            - Scitags poster for SC23 (
      .     - DOMA DC24 workshop (https://indico.cern.ch/event/1307338/)
        

      RNTWG packet pacing - meeting yesterday (https://indico.cern.ch/event/1337182/) - next in 2 weeks 
             - Discussed setting up testbed, test coordination and methodology

    • 17:40 17:55
      AOB 15m
    • 17:55 18:00
      Next meeting 5m