EJFAT Group Meeting May. 26, 2022

The meeting time is 11:00am.

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

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161 012 5238

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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
  • Spare EJFAT equip loaners:
    • (4) DAQ dev machines indra-s[1-3] 129.57.29/109.23[0-2]
      • alkaid: 24 Xeon Gold 3.4 GHz cores, 100Gbs
      • indra-s1: 24 Xeon Gold 3.0 GHz cores, 100Gbs
      • indra-s2: 32 Xeon Gold 3.2 GHz cores, 100Gbs
      • indra-s3: 32 Xeon Gold 2.3 GHz cores, 100Gbs, 750GB ram disk
    • (4) DAQ Farm machines dafarm6[1-4] currently on 129.57.29.17[1-4] - each 32 Xeon 2.0Ghz cores - 1 Gbs NIC + (4) 10Gbs Spare NICs
    • (4) Unbuilt DAQ Farm machines - each 32 Xeon 2.0Ghz cores - 1 Gbs NIC + (4) 10Gbs Spare NICs
    • (4) Spare 10Gbs Spare NICs
    • (17) Hall-D machines - gluon120-36 129.57.52.9[2-36] - each 2 Xeon 2.6Ghz cores - 10Gbs NIC
    • On Order:
      • PR408549 (6) 100Gbs NICs - ETA 1 July
      • PR408870 PR408938 (2) 100Gbs Arista switches, transceivers, cables, etc - ETA 1 July 5 October
  • Look at iperf2 for network testing
  • Look at ROCE / NIC
• Pending:
  • Support C libraries for LB Host Control Plane - in unit test code review
  • ESnet smartnic open-source GitHub repo (May)
  • ESnet private, forkable Jlab P4 and simulations GitHub repo (May)
• To Do:
  • Near Term:
    • Network Performance Measurements:
      • FPGA LB Throuput
      • Host NICs
      • Host S/W Reassembly
      • UDP Packet Loss
    • Hall-B FT calorimeter and hodoscope streaming readout test - (?)
      • 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 (non-streaming) for old VTP f/w
      • Diagram
      • Hall-B to start taking data June 8
      • Hall B VTPs on .167. subnet
  • Downstream (June/July):
    • HOSS - June 1
      • 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 / Kubernetes
        • Python based (?)
        • Control Plane daemon for compute host (?)
        • Demonstrate CP based flexibility/elasticity
      • Hall-D comms with DAQ 109 subnet require network customization; (EJFAT subnet)
      • Hall-D EJFAT use case
      • Hall-D EJFAT Network Diagram
      • Configuration:
        • ejfat-sw 100Gbs switch
        • (6) PR408549 New Computers w/ X CPUs + U280 fpga
        • (?) Retired Data Center Farm Nodes
        • EJFAT subnet VLAN 937 172.19.22.0/24 - 100Gbs, Jumbo frames
    • DPDK - ESnet reports can stream 100 Gbps using DPDK.
    • IPV6 testing
    • RT2022 - August 01-05 Conference
• AOT

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