EPSCI SRO Meeting Apr. 20, 2020

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Connection Info:

This meeting scheduled via MS Teams. Join link should be in your calendar.


Agenda:

  1. Previous Meeting
  2. Announcements
  3. EIC Streaming Readout VI workshop
  4. Status of stand-alone TriDAS
  5. Use of Hall-B testbedS
  6. Status of ADIOS Testing
  7. Status of WMS design
  8. AOT

Useful References

Minutes:

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

EIC YR Meeting

  • Last Wed.
  • Markus suggested possibility of doing all calibration/reconstruction online via LHCb
    • Some concerns were raised along with suggestions for consulting detector groups
    • Organizer referenced someone's calculation that indicated saving all EIC data would not be an issue
    • Vardan has started looking into detectors and found the situation is still very fluid

Stand alone TriDAS

  • Chris has started looking into this. Code has been downloaded and dependencies are being gathered.

Hall-B testbeds

  • Sergey B. has stood up another SRO test setup in Hall-B with 1 crate and 2fADCS
  • Able to supply ~500MB/s of noise
  • Uses clondaq3
  • Vardan logged in this morning to start playing with but was kicked off soon after
  • Vardan will try implementing a CLARA-based system that uses that system as input.
  • Setup on clonfarm1 in use by TriDAS team

ADIOS Testing

  • Carl is communicating with the author of the higher speed engine for ADIOS that is currently running at only 1GB/s on a network that should support 10GB/s
  • It seems our use case of very high bandwidth between two nodes may not be well matched to ADIOS's primary user base.
  • If this does not turn out to be a simple configuration issue or rectifiable operator error, we may need to look for an alternative

WMS

  • We briefly discussed the status of the WMS development
  • Vardan has communicated with the TriDAS authors, but has not heard back on his latest questions which included an offer to collaborate
  • They may be bringing in additional authors to help with TriDAS rewrites and not have details of that effort worked out
  • Vardan will pursue testing CLARA as an SRO WMS (see above)

DAQ specs from relevant experiments (EIC, SOLID, MOELLER, CLAS12, ...)

  • Vardan is gathering a list to put into tabular form
  • Some estimate by Vardan already for EIC based on luminosity, cross-sections, detectors of ~25GB/s
  • Graham confirmed this was similar to what he recalled from last year in the semi-secret report (shhhhh...) if you exclude the vertex tracker
  • Vardan will make electron version available somewhere
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