CASA6

• 

  Rui Xue <rx.astro@gmail.com> 2 days ago 122f86797052420fc383346a191409d7aa1b797b

  CAS-14622: use NoLocking in writeBackToFullImage for tile-aligned images
  Switch PagedImage open mode from AutoNoReadLocking to NoLocking in
  CubeMajorCycleAlgorithm::writeBackToFullImage.
  
  This is safe because the tile-alignment fix in SIImageStore::buildImage
  (also in this branch) guarantees that each MPI worker's channel range
  maps to a disjoint set of TiledStMan disk tiles. With no physically
  shared pages between workers, the write-lock cycle that AutoNoReadLocking
  imposes on every flush (request → wait → acquire → flush → release) adds
  unnecessary Lustre lock overhead even though the underlying I/O regions
  never overlap.

  • casatools/src/code/synthesis/ImagerObjects/CubeMajorCycleAlgorithm.cc (version 122f86797052420fc383346a191409d7aa1b797b) (diffs)