Date: Tue, 12 Feb 2002 23:32:32 -0700 (MST)
From: Joe McMullin <jmcmulli@cv3.cv.nrao.edu>
Reply-To: aips2-naug@donar.cv.nrao.edu
To: aips2-naug@cv3.cv.nrao.edu
Subject: [Aips2-naug] Minutes Jan 30, 2002 AIPS++/NAUG meeting (draft)

Minutes of 2002-1-30 NAUG/AIPS++ Meeting

Attending:
----------
AOC: Brisken, Brogan, Chandler, Claussen, Kemball, Shepherd 
     Moellenbrock, Myers, Owen, Taylor, McMullin
CV:  Fomalont, Hibbard

Notes:
------
o Development Plan. Brief mention that this was finalized. A small omission,
development of a baseline phase correction, was added to this development
cycle.

o Recipes. The recipe aspect to the AIPS++ documentation was given an
overhaul. Partly driven by NAUG comments, the recipes web page was reorganized,
and a new template format developed to facilitate more submissions
and easier maintenance. Moellenbrock pioneered this new structure and wrote
a Note explaining the repository and submissions:
http://aips2.nrao.edu/stable/docs/notes/249/249.html 

The recipe page can be found at:
http://aips2.nrao.edu/stable/docs/recipes/Recipes/index.html

Submissions can be sent to: aips2-recipes

Several submissions have already been accepted and placed into the repository.

The NAUG will appoint someone to evaluate NAUG submissions so that a 
streamlined acceptance into the repository is possible. The NAUG will maintain
NAUG recipes, though intrinsic changes to code (e.g. function name changes)
will be maintained by AIPS++.

o A monthly observatory-wide video talk on AIPS++, the AIPS++ Tutorial Series,
has been scheduled for the first Wednesday of each month at 1400 MST. A
schedule of talks will be released shortly.

o The January 2002 AIPS++ Newsletter was released. It can be seen at:
http://aips2.nrao.edu/stable/docs/newsletters/index.html
	Hibbard has recommended this be linked to from the Documentation
	page. 

o General AIPS++ development. Kemball discussed a new compression option
available in the imager module. There was some discussion of whether this
should be the default; the 'aye's have it. Documentation will need to be
put into place to discuss those observer circumstances where it could affect
results.
 
o NAUG targets:

               STATUS OF NAUG/AIPS++ TARGETS  (JAN 16, 2002)

NAUG Targets                     NAUG                 AIPS++         STATUS
----------------                 ----                 ----------     -------
o vlafillers and fits            Ed F, Claire C       George         wait
	problem with low density exebyte tapes (Marson investigating)
	need improved documentation to indicate unknown polarization.
o msplot                         Greg T, John H       David          test
	Several defects are waiting for work. More testing can proceed.
	Updates on the defects will be announced to the NAUG.
o flagger                                             George         wait
o autoflag                       Ed F                 Oleg           test
o high frequency aprioris        Debra S, Claire C    Athol          test
	Tested Myers script. Data calibration in AIPS/AIPS++ to 
	within 1%. Separated opacity corrections and antenna gains:
	Opacity corrections are within .3% with improved script.
	Antenna gains still show differences. These may be due to
	differences in the calculation of the elevation (time
	standard (IAT, UTC), and geocentric vs. geodetic).
	Enhancement has been put in for a conversion of geodetic
	to geocentric.
o calibrater (polarization)      Steve M              Athol          test
o calibrater (spectral line)     John H, Mark C       Athol          wait
	Several defects are still unresolved however several problems
	and difficulties have been resolved (c.f. Hibbard's script 
	results sent to aips2-naug).
o fringing and VLBI              Walter B             George         wait
	Brisken has begun work. Moellenbrock is working on the AIPS++
	end.
o imager (polarization)          Steve M              Kumar          okay
o imager (multi-facets)          Ed F                 Kumar          test
	Golap found that increasing resident memory improved performance
	by a factor of 2 (up to 500 MB) for 81 facets. Performance
	is still down compared to AIPS (Fomalont).
o imager (mozaic)                John H, Ed F         Kumar          test
o imager (single dish+array)     Debra S, Kristy D    Joe            test
o viewer/interface survey        John H, Crystal B    Athol          wait
	Results of the survey are pending.
o image analysis (Spectral Line) John H               Neil (George)  test
o image analysis (Continuum)     Ed F                 Neil (George)  test
o execution efficiency           Ed F                 Athol          test
	Fomalont is seeing a slow down by a factor of 3-6 for making
	a dirty map. Standard benchmarks are required to ensure that
	the testing is truly the same in both.
	A benchmark tool has been implemented in AIPS++ which executes
	standard performance benchmarks. This is developed as part of a
	broader analysis/improvement of the execution efficiency within
	AIPS++. 
	Continued testing on this target.
	In addition there needs to be some guidance on memory use
	in the documentation for AIPS++.
o VLA Cookbook                   All                  George         wait
o Scripts and Recipes            Steve M, Ed F        All            test
	New recipe system put into place.



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