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LOCAL foilset 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

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

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