Casa6

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  Srikrishna Sekhar 30 Jun 2026 2cf4071aa63ff380efca1337793b13f32fe52d11

  CAS-14527 : Improve AWP2 memory performance
  The wtcf for A-term was duplicated across all W planes. This is not
  strictly necessary, since A term wtcf is independent of W. The code has
  been refactored to reflect this.
  
  From VLASS testing this was a ~ 20-30% drop in sustained memory load.

  • casatools/src/code/synthesis/TransformMachines2/AWConvFunc.cc (version 2cf4071aa63ff380efca1337793b13f32fe52d11) (diffs)
  • casatools/src/code/synthesis/TransformMachines2/AWConvFunc.h (version 2cf4071aa63ff380efca1337793b13f32fe52d11) (diffs)
  • casatools/src/code/synthesis/TransformMachines2/AWConvFuncHolder.cc (version 2cf4071aa63ff380efca1337793b13f32fe52d11) (diffs)
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  Srikrishna Sekhar 30 Jun 2026 b411209da523195179f1b816ae13358f23332808

  CAS-14527 : Memory improvement to W-plane CFs
  Instead of allocating a large buffer and trimming down to max W support
  size, calculate the max W support size a priori and create a buffer that
  is 2X that size (same as the post-trim size before this change).
  
  From VLASS testing, this yields a ~ 40% drop in peak memory required,
  although this is very dependent on max W support size.

  • casatools/src/code/synthesis/TransformMachines2/AWConvFunc.cc (version b411209da523195179f1b816ae13358f23332808) (diffs)
  • casatools/src/code/synthesis/TransformMachines2/AWConvFunc.h (version b411209da523195179f1b816ae13358f23332808) (diffs)
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  Srikrishna Sekhar 30 Jun 2026 af3d7bb816351e0c35d926a653c7d21e660f9c24

  CAS-14527 : Incremental gridding performance
  The gridder discarded (prior to this commit) the per-W support size and
  always used the largest support size.
  
  This change respects the computed per-W support size during gridding,
  therefore small W planes see a speedup and do not waste time gridding
  with effectively padding.

  • casatools/src/code/synthesis/TransformMachines2/AWConvFuncHolder.cc (version af3d7bb816351e0c35d926a653c7d21e660f9c24) (diffs)
  • casatools/src/code/synthesis/TransformMachines2/AWConvFuncHolder.h (version af3d7bb816351e0c35d926a653c7d21e660f9c24) (diffs)
  • casatools/src/code/synthesis/TransformMachines2/AWPLPG.cc (version af3d7bb816351e0c35d926a653c7d21e660f9c24) (diffs)
  • casatools/src/code/synthesis/TransformMachines2/AWPLPG.h (version af3d7bb816351e0c35d926a653c7d21e660f9c24) (diffs)
  • casatools/src/code/synthesis/fortran/fmosaic.f (version af3d7bb816351e0c35d926a653c7d21e660f9c24) (diffs)