EJFAT Group Meeting May. 5, 2022

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The meeting time is 11:00am.

Connection Info:

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Meeting URL
 https://jlab-org.zoomgov.com/j/1610125238?pwd=QnEvcjV6VFFndWZsQW15SmJKU0RJZz09&from=addon

Meeting ID
161 012 5238

Passcode
503371

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Agenda:

  • Previous meeting
  • Situation:
    • Rec'd new f/w build 28 April
      • Specs
      • Restores Jumbo Frames
      • arp, ping - working
      • Port entropy field - Passed Test for data_id stream horizontal reassembly with 10 streams
    • Using script based LB Control Plane
    • ERSAP feed end bottleneck needs investigation; Timmer's blaster may provide relief
    • EJFAT subnet VLAN 937 172.19.22.0/24
    • EJFAT equip inventory:
      • Loaners:
        • (2) switches: ejfat-sw, daq-cc-f109-sw-1
        • (3) DAQ dev machines indra-s[1-3] 129.57.29/109.23[0-2]
        • (4) DAQ Farm machines dafarm6[1-4] currently on 129.57.29.17[1-4]
        • (17) Hall-D machines - gluon120-36 129.57.172.1[20-36]
        • 10Gbs NICs
      • On Order:
        • Compute Equip.- ETA 1 June - sans 100Gbs NICs (ETA 1 July)
        • Networking Equip. - ETA 1 July 5 October
  • Pending:
    • Support C libraries for LB Host Control Plane - in unit test
    • ESnet smartnic open-source GitHub repo (May)
    • ESnet private, forkable Jlab P4 and simulations GitHub repo (May)
  • To Do:
    • Near Term:
      • Hall-B FT calorimeter and hodoscope streaming readout test - Pending OK from Sergey B.
        • May be able to use Abbott's indra-s1 setup
        • May be able to use new VTP f/w with Hall-B VTP's - (Ben Raydo)
        • CODA 3.10 + ERSAP for new VTP f/w
        • CODA 2.0 for old VTP f/w
        • Diagram
      • HOSS
        • parallelize writing of raw data files
        • distribute raw data across multiple compute nodes for calibration skims
        • 1 Gbs at hi-luminosity
        • Control Plane
          • Will interact with SLURM
          • Python based (?)
          • Control Plane daemon for compute host (?)
          • Demonstrate CP based flexibility/elasticity
        • Hall-D comms with DAQ 109 subnet require network customization; DAQ 29 subnet available
        • Hall-D EJFAT use case
        • Hall-D EJFAT Network Diagram
    • Downstream:
  • AOT

Minutes:

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