Landau Gauge Fixing on GPUs
  In this paper we present and explore the performance of Landau gauge fixing in GPUs using CUDA. We consider the steepest descent algorithm with Fourier acceleration, and compare the GPU performance with a parallel CPU implementation. Using $32^4$ lattice volumes, we find that the computational power of a single Tesla C2070 GPU is equivalent to approximately 256 CPU cores. 
Nuno Cardoso, Paulo J. Silva, Pedro Bicudo and Orlando Oliveira
hep-lat physics.comp-ph