Message passing on the QCDSP supercomputer

Details Message passing on the QCDSP supercomputer Message passing on the QCDSP supercomputer

1999-08-18

arxiv.org/abs/hep-lat/9908024v1

Nucl.Phys.Proc.Suppl. 83 (2000) 792-794

Physics

High Energy Physics

High Energy Physics - Lattice

LATTICE99(Algorithms and Machines) - 3 pages

Scientific paper

The QCDSP machines were designed for lattice gauge calculations. For planning it is crucial to explore this architecture for other computationally intensive tasks. Here I describe an implementation of a simple message passing scheme. With the objective being simplicity, I introduce a small number of generic functions for manipulating a large data set spread over the machine. I test the scheme on three applications: a fast Fourier transform, arbitrary dimension SU(N) pure lattice gauge theory, and the manipulation of Fermionic Fock states through a distributed hash table. These routines compile both on QCDSP and a Unix workstation.

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