EJFAT Group Meeting Apr. 28, 2022

The meeting time is 11:00am.

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

Meeting ID
161 012 5238

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503371

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Agenda:

• Previous meeting

• Situation:
  • Testing with End-to-end EJFAT ERSAP solution on FPGA LB
  • Jumbo Frames - indra-s2,s3, alkaid, fpga
  • Linux IP stack buffer size increased
  • 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
    • 10Gbs NIC, but need cables (copper twinX will do)
  • EJFAT loaner equip inventory:
    • (2) switches: ejfat-sw, daq-cc-f109-sw-1
    • (3) DAQ dev machines indra-s[1-3]
    • (4) DAQ Farm machines dafarm61 dafarm62 dafarm63 dafarm64 currently on 129.57.29.0/24 subnet w/ additional i/f available for EJFAT subnet
    • (17) Hall-D machines - gluon120-36
  • Testing newly received FPGA load
    • Specs
    • arp, ping - working
    • Issues:
      • Port entropy field - currently broken, update pending
      • MTU size restricted to max 1500, update pending
      • Possibly incorrect control message responses being investigated
    • Rec'd new f/w build 28 April
• Pending:
  • Compute Equip.- ETA 1 June - sans 100Gbs NICs (ETA 1 July)
  • Networking Equip. - ETA 1 July 5 October
  • Support C libraries for LB Host Control Plane
  • ESnet smartnic open-source GitHub repo (April)
  • ESnet private, forkable Jlab P4 and simulations GitHub repo (April)
• 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 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
    • HOSS Hall-D EJFAT use case
      • parallelize writing of raw data files
      • distribute raw data across multiple compute nodes for calibration skims
      • 1 Gbs at hi-luminosity
      • Control Plane
        • Feedback from Compute hosts
        • 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
      • Slides
      • Netwok Diagram
  • Downstream:
    • DPDK
    • IPV6 testing
    • RT2022 - August 01-05 Conference
• AOT

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