|Title||A Spatio-Temporal Coupling Method to Reduce the Time-to-Solution of Cardiovascular Simulations|
|Publication Type||Conference Paper|
|Year of Publication||2014|
|Authors||A Randles, and E Kaxiras|
|Conference Name||Proceedings of the 28th IEEE International Parallel and Distributed Processing Symposium (IPDPS)|
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.