Abstract
Micromagnetic modeling is a powerful tool for analysis of spintronic materials and devices. We have developed a new software named The Fouriest designed for micromagnetic modeling on Nvidia GPUs. Basically, the program solves the Landau-Lifshitz Equation on a 3-D grid, using Fast Fourier Transform for calculation demagnetization fields. The key advantage of the new code is that it can model not only a single magnetic system, but also an ensemble of ones, which is often required in spintronics. The performance of such calculations via our software is significantly higher than using other programs that do not support concurrent modeling of multiple systems. This performance gain is obtained by batching Fast Fourier Transforms of ensemble systems, giving a full utilization of all GPU parallelism levels. Systems in the ensemble being processed can differ from each other in their shape and physical parameters, and can even interact in various ways.
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Pershin, I., Knizhnik, A., Levchenko, V., Ivanov, A., Potapkin, B. (2019). The Fouriest: High-Performance Micromagnetic Simulation of Spintronic Materials and Devices. In: Arai, K., Bhatia, R., Kapoor, S. (eds) Intelligent Computing. CompCom 2019. Advances in Intelligent Systems and Computing, vol 997. Springer, Cham. https://doi.org/10.1007/978-3-030-22871-2_16
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