Monday Morning Meeting May 4, 2015

  • USA Toll Free Number: 866-901-8266
  • USA Toll Number: +1-203-566-3863


  • Socorro: Jeff, Susan, Jim, George, Tak, Lindsey, Sanjay, Urvashi, Juergen, Martin, Pam
  • CV: Akeem, Darrell, Andy, Ville, Mark
  • Garching: Dirk, Julian,
  • SCO:

News / Meetings / Visitors

  • Distinguished Performance Award
  • CASA Ops Review
  • ALMA Observing Modes Meeting

Build, Release, Testing

  • CASA 4.4
    • Pre-release packages are available on cluster
    • Performance issues: changes pushed into release branch on Friday. * To be tested today


  • Technical Forums:


  • OpenMP threading issues in casacore


  • CASA-4.5 Planning


  • CASA 4.3.1 / EVLA pipeline commissioning: waiting for CASA 4.4 setjy flux scaling fix validation; patch CASA 4.3.1 ?
  • ALMA interferometry pipeline acceptance testing: simple spw mapping fix, flagging tbuff patch
  • Development
    • Web log development for session support completed and tested
    • Imaging prototype with tclean completed
    • Error handling improvements for session support
    • Flagging code refactoring started
    • Plotms cache loading inefficiencies


  • -ffast-math

Developer Reports

Monday Meeting
  • Sanjay Bhatnagar
    • Feed Selection in MS Selection
    • Tests on large A array imaging
    • Planning Issue: FFT Server -> API control of threading behavior.
  • Sandra Castro
  • Lindsey Davis
    • flagdata / tbuff / flagging command compression discussions with Jeff, Sandra, Julian, Brian, ALMA PWG
    • error handling improvements for observing session support
    • ALMA observing session / full polarization data testing
    • plotms testing with Pam, Brian, and others
    • flagdata, spw mapping patches to support ALMA interferometry acceptance testing
  • Pam Ford
    • CAS-7373 (Resolved) - colorize by field issued fixed by VIVB2 implementation in plotms
    • CAS-7482 (Resolved) - plotms will use FLOAT_DATA column when default DATA column does not exist in single-dish MS
    • CAS-7428 (Resolved) and CAS-7481 (fixed) - pipeline plotms write-lock issues fixed
      • sd pipeline issue revealed Cube resize error, created CAS-7488 for MSTransformBufferImpl bug
    • CAS-7511 (Resolved) - discussion of antenna selection syntax
    • Tested and Resolved:
      • CAS-7390 (Virtual model data), fixed related bug in plotms
      • CAS-7412 (Improve performance with subchunk counts)
        • creating VI and getting VisBuffer structure performance now comparable to 4.3, verified by Lindsey
    • Tested loading requested metadata axes only
      • no performance improvement, data cubes seem to be the big performance issue according to Jim
      • plotms always loads time, field, spw, channel, frequency, corr, scan, ant1, ant2, baseline, flag, observation, and intent axes
    • Plotms being tested by Drew Brisbin in CV
      • Fixed plotms bug with time- and channel-averaged weight and sigma axes (CAS-7118 and CAS-7119)
    • Made release-4_4 developer build for testing/patching
    • Finally built casa on OSX 10.10 for CAS-4592 and CAS-7246. HALLELUJAH
    • Investigated running plotms in parallel on same MS, created CAS-7504 for MSTransformIterator write-lock
    • Investigated plotms correlation selection issue discovered by Tak in CAS-7434, created CAS-7512 for MSTransformBufferImpl bug
  • Kumar Golap
  • Justo Gonz├ílez Villalba
    • Further improved performance of MSTransformIterator initialization to be in line with the old plain VI/VBJim Jacobs
    • Fixed bug in frequency calculation for channel average
    • Minor fixes in connection with default virtual model data column
    • Tested OpenMP improvements introduced in the last casacore commits
  • Jeff Kern
    • ALMA Obs Mode Review
  • Susan Loveland
    • CARTA save/restore state
    • CAS-5689: Profile fitting incorrect for particular cube and settings.
  • David Mehringer
  • George Moellenbrock (2 weeks)
    • CAS-7478: uvcontsub segv; unreproducible except with user's typo in fitspw specification (followup today)
    • CAS-7271: Mis-calibration occurred when field changes not recognized as "new cal", and gainfield='nearest' (fixed)
    • CAS-6995: 'nearest' interp in frequency mis-calculated for LSBs (fix pending)
    • Cal lib "quick reference" nearly ready for v4.4 testing (also a facility for translating old applycal parameters to callib)
    • Polarization and other user support for JAO, Socorro, Japan, etc.
    • Catching up on various writing projects: Summer School book Calibration chapter, Lin feed Poln Memo, prep for Interferometry and Calibration lectures at Canadian Workshop (August)
  • Dirk Petry
  • Martin Pokorny
    • Progress on prototype for parallelized iteration control in tclean: existing serial, continuum and cube parallel imager, normalizer and deconvolver components now can plug into refactored framework. Focus next on iteration control.
  • Urvashi Rao
    • Writing functional (python level) tests for tclean use cases and converting all existing tool level examples to task tests.
    • Other : Turned off more log messages from 'ia' tool use within old clean. Started build of release-4_4 on el6 desktop and got stuck. Went through Jeff's 4.5 todo list and gave tclean related feedback.
  • Darrell Schiebel
  • Ville Suoranta
  • Julian Taylor
    • minor tweaks to mpi launcher (CAS-7415)
    • invalid timerange fixes to manual flag compression (CAS-7349)
    • setup serial vs parallel performance monitoring for alma cycle 2 testcase (CAS-7483)
    • filed casacore PR with booltobit performance improvement (CAS-7406, gh-101)
  • Takahiro Tsutsumi
    • Makemask help doc update and some more testing to make sure everything is working as expected
    • Setjy bug fixes related follow-up discussions/testing
    • Found an issue with the task interface: setting in a global parameter can modify the default parameter behavior in subsequent task run with arguments inside if the global parameter is the task's sub-parameter and not explicitly set in the task command (e.g. setjy's fluxdensity parameter)
Friday NAOJ Meeting
  • Kanako Sugimoto
  • Wataru Kawasaki
  • Masaya Kuniyoshi
  • Takeshi Nakazato

-- MartinPokorny - 2015-05-01-- MartinPokorny - 2015-05-01
Topic revision: r14 - 2015-05-04, JeffKern
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