Multi-GPU-based acceleration of the explicit time domain volume integral equation solver using MPI-OpenACC

Saber Feki, Ahmed Al Jarro, Hakan Bagci

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations


An explicit marching-on-in-time (MOT)-based time-domain volume integral equation (TDVIE) solver has recently been developed for characterizing transient electromagnetic wave interactions on arbitrarily shaped dielectric bodies (A. Al-Jarro et al., IEEE Trans. Antennas Propag., vol. 60, no. 11, 2012). The solver discretizes the spatio-temporal convolutions of the source fields with the background medium's Green function using nodal discretization in space and linear interpolation in time. The Green tensor, which involves second order spatial and temporal derivatives, is computed using finite differences on the temporal and spatial grid. A predictor-corrector algorithm is used to maintain the stability of the MOT scheme. The simplicity of the discretization scheme permits the computation of the discretized spatio-temporal convolutions on the fly during time marching; no 'interaction' matrices are pre-computed or stored resulting in a memory efficient scheme. As a result, most often the applicability of this solver to the characterization of wave interactions on electrically large structures is limited by the computation time but not the memory. © 2013 IEEE.
Original languageEnglish (US)
Title of host publication2013 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
ISBN (Print)9781479911295
StatePublished - Jul 2013

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01


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