Monday Morning Meeting 8/26/19

  • IP:
  • Phone: (434) 817-6524

News / Management
  • No meeting next week - NRAO holiday
  • CUC agenda/material development
  • ADASS poster content generation
  • CNGI
    • Trade study report updates and discussion this week
    • Conceptual Design document underway
  • CASA 6
    • Full attention to 6.0 initial release tarball issues
    • CASA team should transition to 6.x development environment
      • Dave and Darrell please provide directions on Confluence


  • Calibration and Flagging
    • N/A
  • Imaging
    • N/A
  • Data Visualization
    • N/A
  • Import / Export
    • N/A
  • Infrastructure
    • N/A
  • Simulation
    • N/A
  • CASA 6
    • What is the formal modus-operandi for developers to get fix or development tested-validated and PR'ed ?
    • Documentation: examples with "import..." (potentially many and very spread throughout the docs) would need updates and decisions on what should be public or not. For example, flagdata says:
        import flaghelper as fh
        antdic = fh.readAntennaList(antfile)

Paths have changed, the PYTHONPATH is not overpolluted any longer, and in this example is now private.

Build / Testing

  • Infrastructure
    • N/A
  • Unit
    • N/A
  • Verification
    • N/A
  • Validation
    • N/A

User Liaison Updates

  • Helpdesk/feedback users:
    • Frequent crashes CASA 5.6.0 on OSX 10.13.4 (ALMA 16093; Adam Ginsburg)
    • CASA commands do not work on Samba-mounted drive (ALMA 16103; Adam Ginsburg)
    • In mstransform with multiple MSs, and when specifying both regrid=True and timeaverage = True, the resulting flux and velocity width of the line are wrong (possibly because not all of the spw’s have correct Doppler tracking applied) (ALMA 16021; Ian Czekala)
    • CASA 6 with Python 3.6 could not import libraries when using scipy 1.2.1, only with scipy 1.3.1 (Casey Law).
    • Since most people start with a virgin ~/.casa tree, it would be very useful to have a (commented) version of the and rc file that can be placed in the ~/.casa tree. I would suggest to add examples of those in the $CASAROOT/etc or data directory, or share? (Peter Teuben)

Pipeline Updates

  • N/A

Single Dish Development (8/22/19)

  • Wataru Kawasaki
    • Wrote sample codes using PySpark and Dask to fit/subtract polynomial baseline from SD spectra as part of CNGI study
    • Used parquet as input data format
    • Elapsed time for baselining looks linearly scaling both for PySpark and Dask
    • Dask is a bit (about 50%) faster?
    • The codes yet to be parallelised. Partitioning parquet data needed in advance?
  • Takeshi Nakazato
    • 5.6 closeout
    • 5.7/6.1 planning
    • investigating resurrected debug message in recent prerelease package -> created CAS-12641
  • Renaud Miel
  • Suminori Nishie
Topic revision: r8 - 2019-08-26, BjornEmonts
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