EJFAT EPSCI Meeting Jun. 1, 2022

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The meeting time is 2:00pm.

Connection Info:

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Meeting URL
https://jlab-org.zoomgov.com/j/1612038101?pwd=Yk96QUcyT1NDVTRRUGNtOFVSSTdaUT09&from=addon

Meeting ID
161 203 8101

Passcode
378382

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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
    • New machines (6) rec'd, installed, going on EJFAT subnet (VPN)
    • 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 Current Results
        • Host NICs
        • Host S/W Reassembly
        • UDP Packet Loss
        • Need new parameters
      • Hall-B FT calorimeter and hodoscope streaming readout test - OBE
        • 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
        • 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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