Implementing Wilson-Dirac operator on the cell broadband engine
Khaled Z. Ibrahim, François Bodin · 2008
Computing the actions of Wilson-Dirac operator contributes most of the CPU time for the grand challenge problem of simulating Lattice Quantum Chromodynamics (Lattice QCD). This routine exhibits many challenges in implementation on most computational environments because of the multiple patterns of accessing the same data, making it difficult to align the data efficiently at compile time. Additionally, the low computation to memory access ratio makes this computation bounded by the memory bandwidth and the memory latency.