A Spatio-Temporal Coupling Method to Reduce the Time-to-Solution of Cardiovascular Simulations

TitleA Spatio-Temporal Coupling Method to Reduce the Time-to-Solution of Cardiovascular Simulations
Publication TypeConference Paper
Year of Publication2014
AuthorsRandles, A, and Kaxiras, E
Conference NameProceedings of the 28th IEEE International Parallel and Distributed Processing Symposium (IPDPS)
Date Published08/2014
Abstract

We present a new parallel-in-time method designed to reduce the overall time-to- solution of a patientspecific cardiovascular flow simulation. Using a modified parareal algorithm, our approach extends strong scalability beyond spatial parallelism with fully controllable accuracy and no decrease in stability. We discuss the coupling of spatial and temporal domain decompositions used in our implementation, and showcase the use of the method on a study of blood flow through the aorta. We observe an additional 40% reduction in overall wall clock time with no significant loss of accuracy, in agreement with a predictive performance model.

DOI10.1109/IPDPS.2014.68