EPSCI SRO Meeting Nov. 8 2021

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Agenda:

  1. Announcements
  2. Streaming CODA
    • Streaming EMU
    • VTP firmware
    • Streaming CODA state machine and the role of the AFECS
    • Configuration and the role of the JCEdit
    • Monitoring
    • ERSAP stream unit level workflow manager as a streaming CODA run-control
    • The role of the ET in the streaming CODA
    • Standard data transport. Use of the common transport for both DAQ and data-processing.
    • Standard data format used for entire data pipeline
  3. ERSAP framework development
    • C++ binding
    • Data lake as an ERSAP engine
  4. ERSAP prototype applications
    • INDRA VTP setup
    • INDRA SAMPA setup
    • Hall-D calorimeter prototype SRO
  5. ERSAP TriDAS integration
    • Hall-B upcoming beam tests
  6. AOT

Useful References

Minutes:

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

• Ben is working on the VTP firmware that will combine functions of the triggered and streaming DAQ. Updating of the VTP firmware to switch between two modes of data acquisition will not be required. So, in a new CODA the VTP will become so called “hardware ROC”, and will require control and monitoring by the CODA run-control system.

• David A. led the discussion for the streaming CODA state machine. We discussed differences between current CODA state machine. It was agreed that first we need to define states and state-transitions for the streaming CODA before we will decide if AFECS can be adopted to configure and control streaming DAQ. It was mentioned that COOL language will most likely be used to described the new state machine.

• We also discussed the role of the ET system in a way to inject user events into a data stream. Since data stream quantum is defined by its time stamp, a user event injected into the data stream must have a time stamp. In order to prevent time-stamp discrepancies the user will not provide a time for the event, allowing streaming DAQ systems to deliver it. For that a dedicated component in the streaming pipeline will be responsible to provide a UNIX time for all user events.

• Reports on the current statuses for the ERSAP framework development, as well as the ERSAP based data processing pipelines on multiple test setups were presented.

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