Meeting Notes for 15 April 2009

Action Items

• BRANCH/1.1 needs to be merged into TRUNK.

Cosmic

• 1.1β1 is live
• Some worries about disk space
  • Data storage is down to 24% free
  • tmpfs on www18 fills up under load
• Intermittent upload problems from FNAL, helpdesk ticket is open to determine if this is a network issue

Data Blessing

• We make sure the detector is stable and reliably grabbing data over time
• Detector has to be plateaued
  • When a user updates a data file
  • Compare to one that is a "golden standard"
  • If the difference σ is too much, flag the user, prompt the user
  • Requires upload form changes, possibly more
  • New metadata tags may be needed
  • Grandfathering process is required
• Gold Standard of a file?
  • User has to believe that it is good.
  • Do a performance study?
• Dependent on the user

• Performance is intended for users to verify if data is good or not
  • Hoped for users to push back, they didn't
  • Performance study may change?
    • Time/threshold is only one parameter in data quality control
    • Need more parameters?

• If the data passes the σ test, do we autobless or not?
• Is blessing a boolean yes/no?
• LIGO uses quality flags, not just blessed or not-blessed.
• Ideally we could search by tags, searching system might be able to do first-approximation filtering

• Search data by comments? Might help collaboration
• User tagging?

General Upgrades

• Tomcat now running 5.5.27 (was .20) to permit large-uploads
• Postgres now running 8.1.17 (was .04) to fix some deadlock issues
• Libraries a'plenty got updated

Branching/Merging

• Some messiness about that.
• Branching for each major feature and merge back?