Socorro: Jeff, Susan, Jim, Lindsey, Sanjay, Urvashi, Kumar, Martin, George
CV: Akeem, Ville, Mark, Darrell
Garching: Sandra, Julian, Dirk
News / Meetings / Visitors
VLASS is ramping up
Dual mode in ALMA
Build, Release, Testing
Issues for the release:
Nearest in gainfield
Import ASDM issues with RefCodes
Make the sorted subtable in memory rather than on disk
Throw this switch
Issue with clearmod in tclean, open's source table but does not release lock.
Clark Clean: One is memory based and one is disk based
Yes to be cleaned up in 4.6
Issue with canned model for VLA
To be investigated about which position is being used.
BDF Flags in ALMA
Michel is looking at the issues
Testing and bug fixing phase. All implementation is in place for 4.5.
HPC-related blocker ticket, CAS-7705 (tclean exhibits excessive number of open() calls against MS subtables): James saw that running tclean in sequential on an MMS was slower than on a normal MS. Julian has seen that VisibilityIteratorReadImpl::setTileCache opens each SubMS once for each of the 8 sorting columns. This may explain the slowness in tclean on an MMS.
Next step for 4.5 is to write documentation for the users on how to run CASA in parallel.
Multiple-spw science target continuum images, first continuum subtracted science target cubes with tclean
CASA 4.5. integration issues: BDF flags, WVR uncorrected vs corrected flags, ephemeris tables, tclean mosaics
Fixed a bug on the creation of a symlink for the SYSPOWER sub-table on MMSs.
Created MMS for Jenkins to run on tasks automatically.
Changed the error handling in flagmanager when user asks to save a version name that already exists. The task will issue a warning and rename the existing flagversions to a ".old.timestamp" name.
Verifying the flagging of shadowed antennas when ref frame is other than J2000. Todd claims that it is not flagging one MS on APP after my fix.
continued work on AQUA report generation, most flagging steps have entries
CASA 4.5. testing and bug fixing
Reqal Gridder not yet checked in, giving different results
Justo González Villalba
Various Management documents
SKA Architecture Report
Beginning 4.6 Planning
On "vacation" for 3 of the past 4 weeks
Most common parametrized types now work via CalLibrary
Nuts and bolts work continues on cal solve migration to VI2: calibration code is in good shape; still some difficulty layering ViImplementations (maintaining control of the calibration-aware layer outside the VI2). Have decided to punt on this for v4.5.
Various weight-related discussions w/ SD folks and Crystal. Found global factor of 2 error in traditional statwt (due to combining real and imag parts in the std estimation), as well as digital factors as large as sqrt(2) missing from the nominal initialization. (Context here is the case of dataset combinations, so absolute weights matter.)
Also various work on Penticton Interferometry workshop talks and ALMA polarization CASAguide and other testing.
Continuing work on visstat2; primarily work on the tool-level code this week, some work on code using the statistics framework.
Worked on modification to mask parameter interface (i.e. moving mask parameter out of sub-parameters of niter>1 ). Still needs some more work especially to make sure it works properly for multi-field case
Added parallel cube tclean to use virtual concat. but ran into a problem of table-lock in accessing some of sub-cube images to be concatenated
Investigated a new multiple channel selection issue reported by Dirk M.
~ 0.5d on science: reading and commenting on a draft of science paper using ALMA archive data