Hackl, R. and Matuttis, H. G. and Singer, Johannes Maria and Husslein, Thomas and Morgenstern, Ingo (1994) Efficient parallelization of the 2D Swendsen-Wang algorithm. Physica A; Statistical Mechanics and its Applications 212 (3-4), pp. 261-276.
Download (566kB) - Repository staff only
We established a fast Swendsen-Wang algorithm for the two-dimensional Ising model on parallel computers with a high efficiency. On an Intel paragon with 140 processors we reached spin update times of only 14 ns with an efficiency of 89%. This algorithm was used to examine the non-equilibrium relaxation of magnetization and energy in large Ising systems of a size up to 17920 × 17920 spins. Nevertheless we observed still a strong finite-size effect for the magnetization. We assume both magnetization and energy decay to behave like (t + Δ)-λe-bt in an infinitely large system. Thus, for long times magnetization and energy show an exponential, asymtotic time-dependence, implying a critical dynamic exponent z of zero.
|Date:||15 December 1994|
|Institutions:||Physics > Institute of Theroretical Physics > Professor Morgenstern|
|Subjects:||500 Science > 530 Physics|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||23 Aug 2010 11:49|
|Last Modified:||20 Jul 2011 22:35|