Title :
Scalability of Higher-Order Discontinuous Galerkin FEM Computations for Solving Electromagnetic Wave Propagation Problems on GPU Clusters
Author :
Gödel, Nico ; Nunn, Nigel ; Warburton, Tim ; Clemens, Markus
Author_Institution :
Fac. of Electr. Eng., Univ. of the Fed. Armed Forces Hamburg, Hamburg, Germany
Abstract :
A highly parallel implementation of Maxwell´s equations in the time domain using a cluster of Graphics Processing Units (GPUs) is presented. The higher-order Discontinuous Galerkin Finite Element Method (DG-FEM) is used for spatial discretization since its characteristics are matching the parallelization design aspects of the NVIDIA Compute Unified Device Architecture (CUDA) programming model. Asynchronous data transfer is introduced to minimize parallelization overhead and improve parallel efficiency. The implementation is benchmarked with help of a realistic 3-D geometry of an electromagnetic compatibility problem.
Keywords :
Galerkin method; Maxwell equations; electromagnetic wave propagation; finite element analysis; GPU clusters; Maxwell equations; NVIDIA compute unified device architecture programming model; asynchronous data transfer; electromagnetic wave propagation; finite element method; graphics processing units; high-order discontinuous Galerkin FEM computation; realistic 3-D geometry; spatial discretization; Computer architecture; Concurrent computing; Electromagnetic propagation; Finite element methods; Geometry; Graphics; Maxwell equations; Moment methods; Parallel programming; Scalability; CUDA; FEM; GPGPU; GPU-computing; discontinuous Galerkin; high order;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2010.2046022
