Lattice QCD as a video game
  The speed, bandwidth and cost characteristics of today's PC graphics cards make them an attractive target as general purpose computational platforms. High performance can be achieved also for lattice simulations but the actual implementation can be cumbersome. This paper outlines the architecture and programming model of modern graphics cards for the lattice practitioner with the goal of exploiting these chips for Monte Carlo simulations. Sample code is also given. 
Gyozo I. Egri, Zoltan Fodor, Christian Hoelbling, Sandor D. Katz,   Daniel Nogradi, Kalman K. Szabo