CASA6

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  Josh Marvil 3 days ago f89197a398c8dec723aa4a5dec30059ccfa60f5d

  CAS-14719: avoid small ragged trailing block in cube minor cycle partitioning
  numblockchans derived blksize from nproc and then took nblk=nchan/blksize,
  truncating the division; the remainder was re-appended as an extra, much
  smaller trailing block. nblk was routinely nproc+1 and the orphan block
  could hold only a few channels. The deconvolver derives its mask-smoothing
  beam from the block's own beam subset, where getCommonBeam returns
  trivially for a single-beam set but enters ill-conditioned arithmetic for
  a few very similar channels. Decide the block count first, rounding up so
  no block exceeds optchan, then split the channels evenly.

  • casatools/src/code/synthesis/ImagerObjects/SynthesisDeconvolver.cc (version f89197a398c8dec723aa4a5dec30059ccfa60f5d) (diffs)