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  • 1st April 2015
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Attending: Scott Daniel, Peter Yoachim, Michael Reuter, Darko Jevremovic, Cathy Petry, Kem Cook, Rahul Biswas, Simon Krughoff, Veljko Vujcic, Chris Walter, Brittan Fiore-Silvfast, Lynne Jones

This weeks phonecon will be run by Scott and will cover

  - demo of DDS (Michael)

        - how will it scale to running at 1000x times realtime

  • DDS = how components of the control system will communicate with each other over ethernet.  Uses "publish/subscribe" formalism.
  • Only runs on CentOS 7 right now
  • Has very specific firewall requirements (not a problem if we just run it on Docker containers; but if people want to eups install it locally, they will have to change their firewall configuration)
  • There seems to be a limitation on rate.  Can only push messages out every 30 milliseconds (or slower) if you want the subscriber to receive all of the messages
    • Kem thinks this could be a problem for passing data around inside of the scheduler.
    • Michael will talk to David Mills about this.  Maybe there is an easy way to fix it.
    • Kem thinks Srini has a fast control loop for guiding and seeing; maybe we can learn from his experience.
  • Need another CentOS 7 machine to test machine-to-machine communication
    • David Mills is working on making DDS compatible with other OSs

  - discussion of new baseline cadence run (Kem, Lynne, Zeljko)–brief description of 3.61 & enigma_1189

        - can we sign off on the new baseline for Zeljko to present to the CCB

  • new reference run more repeatable than old reference run
  • proposals refactored to better enable deep drilling fields as compared to old version
  • seem to have eliminated end-of-survey "panic" (rapidly changing filters and position during last year)
  • Lynne thinks enigma_1189 is better than OpSim3_61: it has a more realistic down time distribution
  • From Lynne:
    Tusken has some MAF analysis results from enigma_1189 :
    the "scheduler validation" metrics (on opsim field pointings, not healpix grid .. looks at distributions etc relevant for scheduler)
    http://tusken.astro.washington.edu:8080/multiColor?runId=15
    the "science performance" metrics (on healpix grids, looks at more specific science goals .. just things described in SRD so far)
    http://tusken.astro.washington.edu:8080/allMetricResults?runId=17

Other business

OpSim stand-ups will be 10am Pacific Time on Mondays and Thursdays

 

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