Find this at http://www.npac.syr.edu/users/gcf/bbhdaghhpfmar97M/

Master Foilset for MPI HPF and DAGH for Parallelization of Black Hole Codes

We describe basic physics and computational features of Binary Black Collision Grand Challenge

We show a simple finite difference is complicated by Adaptive Mesh refinement Complex inner and outer boundary conditions Need for several algorithms for hyberbolic and elliptic parts of problem

MPI or more generally message passing is not obsolete but rather the only complete solution!

Higher level systems DAGH and especially HPF cannot express full complexity of problem and MPI must fill in the missing parts

HPF2 might be able to express full problem but HPF1 misses many key capabilities

DAGH is more succesful than HPF1 but needs MPI for parts of problem

Postscript or FramemakerVersion

HPF Code for Linear Waves

Grand Challenge Alliance Home Page

NPAC Activity in Grand Challenge Alliance

Table of Contents for Master Foilset for MPI HPF and DAGH for Parallelization of Black Hole Codes

001 HPF & DAGH usage in the Binary Black Hole Grand Challenge 
002 Goals of the Alliance
003 Computational Infrastructure
004 ADM Equations
005 ADM Equations continued
006 Causal Differencing
007 Causal Differencing continued
008 Apparent Horizon boundary conditions
009 Difficulties of the BBH Problem
010 DAGH System
011 Parallel Execution in DAGH 
012 Parallel Execution in DAGH continued
013 Implementation 
014 Sample of HPF and DAGH code 
015 Linear Waves 
016 Black holes (Inner boundary condition)
017 Black holes continued
018 Linear wave problem with outer boundary condition 
019 Moving Inner boundary
020 Moving Inner boundary continued
021 Finding the Apparent Horizon
022 Elliptic Problem for the shift

Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu