Casa Parallelization meeting minutes

Monday May 7th Room 317, 3:30pm MDT

Attendees:

Targets/tasks for May 7th - 14th

Discussion/Agenda

• Memory requirements in imaging
  • Total memory scaling is generally understood
  • Need to compare expected memory use with actual use
  • Need to understand better how temp image selection works, whether it's correct and how to modify it for parallel cases
• Update on Partitioning status (null selections, non-conforming tasks) Jeff
  • No update
  • Re-examination of Parallel-go
• Update on asdm2ms_xl schedule for stable inclusion
• Model data tests
  • James to get with Kumar
• Memory resident subtable tests James
  • Check that it affects number of FDs as well
• Spectral imaging tests James
  • Understand channel chunk choice effect on memory James
  • Awaiting calibrated data set(s) from Drew to test

CASA HPC Initiatives for the 3.5 Cycle

• Tentative list from last meeting
  • Parallelize multi-field imaging
  • Parallelize MFS terms > 1 in the gridding step
  • Parallelize Cube imaging scatter gather
  • Expand threaded gridder case to >4 threads
  • Implement core affinity for threaded gridder case

Deferred Topics

ARDG Targets