Casa Parallelization meeting minutes: Monday 29 July 2013

Attendees: Jeff, Jim, Kumar, James, Sanjay

Status Review

• Temp Lattice
  • Hooks are in place, preliminary tests in place.
  • James to come back to it now that he's back.
  • Default tile size of Temp Lattice is now 1 MB (unless otherwise specified)
• Time Averaging BL-Dependent Averaging
• XSEDE Conference
• UVA/XSEDE Progress
  • Exposed CV Lustre->XSEDE mapping
  • ALMA Pipeline executed on their hardware
• GPU Effort
  • Now able to generate convolution function on the GPU
  • Takes ~5 ms to get convolution function from RAM
  • Takes ~2 ms to get from GPU

Benchmarking Status

• IO Profile of ALMA pipeline
  • Massive slowdown in CASA Pipeline
    • Understood and corrected
• Tile size performance measurements
  • Ordering of tests
    • Temp Lattice
    • retiling
    • cvel
    • Tile Size and chan_chunk_size
• Testing of compressed storage manager

AOB