September 2014

Conference Paper

Performance of Replica-Exchange Wang-Landau Sampling for the 2D Ising Model: A Brief Survey

By:
Zhao, Yiwei; Cheung, Siu Wun; Li, Ying Wai ; Eisenbach, Markus
Journal Name:
Physics Procedia
Page Number:
43
Volume:
57C
Issue Number:
N/A
Publication Date:
September 2014
Conference Name:
27th Annual CSP Workshops on “Recent Developments in Computer Simulation Studies in Condensed Matter Physics”, CSP 2014
Conference Location:
Athens, Georgia, United States of America

Abstract

We report a brief performance study of the replica-exchange Wang-Landau algorithm, a recently proposed parallel realization of Wang-Landau sampling, using the 2D Ising model as a test case. The simulation time is found to scale inversely with the square root of the number of subwindows (and thus number of processors) used to span the global parameter space. We also investigate the “time profiles” for random walkers in dierent subwindows to complete iterations, which will aid the development of and adaptive load-balancing scheme.


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