Monday Morning Meeting April 7th
DIAL-IN NUMBERS & PASSCODES:
USA Toll Free Number: 866-901-8266
USA Toll Number: +1-203-566-3863
PARTICIPANT PASSCODE: 725760
Attendance
Socorro:
Jim
, Jeff, Rob, Susan, Lindsey, Juergen, Scott,
Urvashi
, George, Tak
CV: Andy, Mike, Darrell, Mark
Garching:Dirk, Sandra
SCO:
News / Meetings / Visitors
ALMA Dev. Study AstroPy: 7-18 April
ALMA ObsMode: April 14-16
Agenda distributed last week.
Dirk Petry Visit: 12-23 May
Imaging Synthesis Workshop May 13-20
Jeff in CV this week
Will be in the office tomorrow.
Working with Adam Leroy on ALMA-D study for python integration.
Jeff at Exascale Radio Astronomy meeting last week in LA - HPC and Radio Astronomy blend.
Strong NRAO presence. Also LWA, LOFAR, SKA, etc.
Representation from NVIDIA and others in industry, looking for collaboration opportunities.
ASIC vs FPGA vs GPU technical discussions.
Parallelism per job is often low on these clusters, similar to CASA. May fit our model.
Balance between computation and I/O is being quantified in research for new architectures.
Build, Release, Testing
CASA 4.2.1 Release on OSX
Readline and uconv fixes have been identified, but not implemented.
Additional JIRA ticket identified.
Juergen to review DMG today.
CASA 4.2.1 Release on EL
Equivalent performance to 4.2.0.
Release shortly.
Test and Stable Packages
Next test package not scheduled. Not expected until OSX is released.
CASA 4.2.2
Open branch for developers today.
Pre-merging testing complete. Starting to collect SVN IDs to merge.
Architecture
New Technical Forums:
April 17th - Lindsey - Pipelines
Modern compiler and C++ 11
Shoot for implementation soon after 4.3 is released to allow sufficient time for debugging issues.
Open discussion with Ger on casacore use of C++11. Would be limited use.
Need to determine implementation plan from collected requirements.
Environmental variables.
CASA Document Repository.
Feedback requested by the end of this week on approach.
Proceeding to implementation next week if no objections are raised.
Development
4.2.1
Changes incorporated to branch.
CASA 4.2.1 Plan
4.2.2
Open branch for developers today.
Pre-merging testing complete. Starting to collect SVN IDs to merge.
George has flagging ready to commit. Weights requires a little more work before committing to the branch.
Sandra has her changes ready for pipeline
Tak has fluxscale and setjy changes ready
Susan will merge plotms as a whole.
Framebuffer fix will NOT make it into the release. Cannot release enough of Darrell's time, will roll to 4.3.
Include George's fix for Obsid.
CASA 4.2.2. Plan
4.3
Schedule
Trying to rationalize the releases to match ALMA October cycles and EVLA reconfigurations.
Significant overlap in EVLA and ALMA needs for a given cycle/semester.
George has been working on Ionosphere work with Jason Kooi. Will be in reasonable shape by the end of the month.
Jason will be pushing to have this released soon. Will need to get the test and stable releases out, or include in 4.2.2.
Clean refactor
Continuing to add details. Spectral definitions from Tak will lead into another task interface to test.
New task interface will run the major cycle. Need buy-in from CSSC and others before proceeding with further development.
Pipeline
Working on blockers on ALMA punch list and weblog meeting.
Solved issues of script generating. Working on topics page, pending input from Stuart.
Schedule is a concern, as well as the OSX requirement.
~70% of ALMA pipeline jobs work as well as a person would. SNR and other concerns fail for other 30%.
EVLA heuristics will be available for testing within the building in the near future.
AOB
Wvrgcal issue discovered. George and Dirk have agreed on flagging approach. Dirk has committed a fix over the weekend. Include in 4.2.2. CAS-6384
Only affects 0.5% of the data, so not terribly visible to the user.
As of 4.2, wvrgcal does not ignore online flags.
May have an unintended effect on the pipeline that will need to be monitored.
Merging for 4.2.2. Dirk would appreciate instructions.
Scott plans to send out instructions today.
--
RobSelina
- 2014-04-01
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RobSelina
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