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CasaParallelMinutes20120206
(2012-02-27,
JamesRobnett
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Casa Parallelization meeting minutes
Monday February 6th Room 317, 3:30pm MDT
Attendees:
Targets/tasks for January 6th - February 13th
Discussion/Agenda
Update on Partitioning status (null selections, non-conforming tasks)
Jeff
Update on asdm2ms_xl schedule for stable inclusion
Does not handle large syspower tables
Still serial, eventually multi-threaded across spw, multi-process across scans
Model data tests
No benchmarking done last week
James
Begin re-examination of multithreaded gridder
Pcube and pclean as task after model data work
Kumar
Lustre file I/O failure
Jim/James
Need to test whether it's actually fixed
Revisit async iterator for writing
Jim/Justo
Refactoring seems to be working in active
Justo is testing flagging
Pointer rewrite in active
Memory resident subtables
Jim
Recent tests with storage manager inconclusive,
James
needs to retest
Check that it affects number of FDs as well
flagging infrastructure most likely next target (Justo might do)
Partition worth looking at
Spectral imaging
Kumar
Understand channel chunk choice effect on memory
James
Need 400+GB continuum case with complex field
Stalled for partitioning
CASA HPC Initiatives for the 3.4 Cycle
Memory Footprint Issues
Deployment of Multi-Field MS-MFS (Urvashi)
Deferred
Deployment of Parallel Gridder and splitting of the Grid (Jim)
Design of MS-MFS Minor Cycle Parallelization (Jim et. al.) using Friday meetings
Deferred
Initial Deployment of ASP Clean (Sanjay)
Performance Issues:
Virtual Model Data Column (Kumar)
Done
Removes model data column
removes need for Setjy
Memory Resident Subtables Deployment
In progress needs testing
VisBuffer
Processing Framework
Add Write capability (Jim)
Need to revisit but seems to work in not imaging
Deployment in tasks (Jeff to Assign)
Parallel Filler (and partitioning) (Tak)
In progress
User Interface:
Parallel Imager in Task (Kumar)
Parallelization of other Tasks (assigned to Europe)
Deferred Topics
ARDG Targets
What is negative side effect of CVel in filler, non-reversible
What needs to be done to acceptably implement Auto-boxing with large number of channels
--
JamesRobnett
- 2012-02-27
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Topic revision: r1 - 2012-02-27,
JamesRobnett
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