The KeLP Project

1
The KeLP Project

• Scott B. Baden
• Daniel Shalit
• Gregory Balls
• Department of Computer Science and
  EngineeringSan Diego Supercomputer Center
• University of California, San Diego

2
The KeLP Framework

• Object oriented libraries for parallel
  application development
• Application-specific tuning at run time
• Flexible data representation (Abstract KeLP)
• Unifying principles for managing locality
• Express communication at a high level using
  intuitive geometric set operations
• Retarget applications hierarchical parallelism,
  communication overlap
• Program coupling (GARLIK)
• Out-of-core (KeLPIO, Rice)

3
Measures of success

• Transitions
• CHOMBO Adaptive Mesh Refinement library
  (Colella, van Straalen, LBNL)
• KeLPIO I/O library targetable by a compiler
  (Broom, Fowler, Kennedy, Rice)
• NPACI Applications
• UTPROJ3D Single Phase flow in Porous Media
  (Wheeler, UT Austin)
• Leverage of NSF support
• KDISTUF DNS for turbulent flow (Nomura, UCSD)
• Conference publications LCPC99, SIAM01

4
Multi-tier KeLP on NPACI Blue Horizon

• Overlap communication with computation using a
  prototype version of KeLP
• Uses a communication proxy
• Work in progress

5
Acknowledgements and more information

• A single tier variant of KeLP is publicly
  available
• Hardened version of KeLP, AKA KeLP1.4
• http//www.cse.ucsd.edu/groups/hpcl/scg/kelp
• NPACI Blue Horizon, Sun HPC, SGI-Cray T3E,
  clusters
• Workstations Solaris, Linux, etc.
• Future Plans
• Program coupling, multi-resolution Ocean
  Circulation Modelling (Stammer, SIO)
• Particle methods if interested, let us know
• Scalable fast Poisson Solver (Balls and Kaiser,
  SDSC Colella, LBNL)
• NPACI requirement analysis