EPSCI SRO Meeting Mar. 8, 2021

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Connection Info:

The meeting time is 2:00pm.

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Meeting ID 680 566 960

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Agenda:

  1. Previous Meeting
  2. Announcements
  3. Mailing list?
  4. ERSAP development
    • INDRA VTP setup
    • INDRA SAMPA setup
      • Possible use in TDIS/GEM (Holly S.)
      • INDRA-ASTRA (Markus D. + students)
  5. VTP Data Format
  6. CLAS12 TriDAS & ERSAP
  7. AOT

Useful References

Minutes:

Attendees: Mike G., Nathan B., David A., Carl T., Chris L., Jie C., Vardan G., David L.

  • Send connection information to Dave A. about the FPGA2 meeting in Wed.
    • Discussed existing cards at JLab. Dave A. said one was already in indras2.
  • Data Lake
    • Discussed disk buffering. Chris pointed out that for it to be effective one would need to pre-buffer data and not wait for buffers to fill before trying to write to disk
    • Pre-emptive buffering requires all data be written to disk. This would limit the speed of the lake and would wear out the disk pretty quickly.
    • Decided it would generally be better to just drop frames in cases when falling behind.
  • Mailing list
    • David L. will check with Marco on status
    • Decision on dedicated mailing list for this group will be made and implemented by next meeting (in 2 weeks)
  • SAMPA
    • Is there something we are waiting on Ed for?
      • Ed was expecting some new cards to be delivered that are compatible with the FELIX cards
    • Dave A.: Data can be streamed to alkaid
      • Dave A. will check on system and see what needs to be done to get it working again. He feels it worthwhile to have the testbed operational.
    • Nothing heard from Holly for a while on her plans for SAMPA. David L. will reach out.
  • VTP
    • Large spikes in frame loss reduced significantly
    • Lost frames seem to come in bursts
    • New scripts are in place to allow remote control over the trigger rate
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