Parallel kinetic Monte Carlo simulation of Coulomb glasses

E. E. FERRERO; A. B. KOLTON; M. PALASSINI

Sant Feliu de Guixols

Conferencia; Transport in Interacting Disordered Systems (TIDS 15); 2013

Universitat de Barcelona

We develop and implement a parallel Kinetic Monte-Carlo technique for simulating the Coulomb glass model on graphics processing units using the CUDA programming framework. We observe an important increase of computing performance over previous serial approaches, with speedups as large as 100x, thus allowing us to reach larger systems, longer simulation times, and lower temperatures. The massively parallel update of local energies and a novel parallel rejection method approach for the KMC updates play a fundamental role in our implementation. We test our code by verifying the Efros-Shklovskii law for conductance, also at very low temperatures, and quantitatively comparing with previous non-equilibrium results