High-Performance Micromagnetic Simulators

Micromagnetic numerical simulations are important for our ability to analyze and design many nano- and micro-scale materials and devices. We present our recent work on the development of high-performance micromagnetic simulators as well as their use for applications in nano-magnetism. We demonstrate a high-performance implementation of the Object Oriented MicroMagnetic Framework (OOMMF) developed at NIST. This simulator uses the same interface as the CPU version but ports the main computational components to GPU, including the field evaluation and time integration. The achieved single GPU – single core CPU speed-ups are around 30. We also show a high-performance micromagnetic simulator FastMag, which uses finite element method and is applicable to complex nano-magnetic structures. We show examples of using the developed simulators for applications in nanomagnetism, such as magnetic recording, magnetic random access memories, and high-permeability magnetic materials.

Speaker Bio: Prof. Vitaliy Lomakin received his M.S. in Electrical Engineering from Kharkiv National University in 1996 and Ph.D. in Electrical Engineering from Tel Aviv University in 2003. From 2002 to 2005 he was a Postdoctoral Associate and Visiting Assistant Professor in the Department of Electrical and Computer Engineering, University of Illinois at Urbana Champaign. He joined the Department of Electrical and Computer Engineering at the University of California, San Diego in 2005, where he currently holds the position of Professor of Electrical and Computer Engineering. His research interests include Computational Electromagnetics, Micromagnetics/Nanomagnetics, the analysis of electromagnetic phenomena on structured surfaces, the analysis of optical phenomena in photonic nanostructures, and the analysis of magnetization dynamics in magnetic nanostructures.

Note: Visitors from outside NIST must contact Cathy Graham; (301) 975-3800; at least 24 hours in advance.