Basic HTML version of Foils prepared May 12 1996

Foil 21 HPF and DAGH Implementation Strategies

From Overview of HPCC Applications at NPAC CRPC Annual Meeting -- May 14-17 1996. by Geoffrey Fox
Secs 53
1 Main Approach is DAGH: Distributed Adaptive Grid Hierarchy (J. Browne, M. Parashar at Texas )
  • a set of programming abstractions in which computations on dynamic hierarchical grid structures are directly implementable (C++).
  • a set of distributed dynamic data-structures providing transparent scalable distribution of the grid hierarchy across processors (MPI).
  • a set of computational modules and AMR/MG support (shared with HPF when HPF supports this adaptive data structure)
  • (http://godel.ph.utexas.edu/Members/parashar/DAGH/dagh.html)
2 HPF (Syracuse) relegated to reserve status
  • data parallel implementation of unigrid PDE solvers as HPF does not support necessary distributions
  • Fortran90/HPF dynamic memory management
  • (http://www.npac.syr.edu/projects/bbh/more.html)
3 DAGH is similar model to HPF with much less general capability but excellent support for AMR data structures and distribution
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