Feasibility of Whole-Heart Electrophysiological Models With Near-Cellular Resolution - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Conference Papers Year : 2020

Feasibility of Whole-Heart Electrophysiological Models With Near-Cellular Resolution

Abstract

Given the opportunity to use a new cluster computer with over a quarter million compute cores we tested the strong and weak scaling of a monodomain reaction-diffusion model of the human ventricles with Ten Tusscher-Panfilov dynamics. Element sizes down to 25 µm and a model size up to 11 billion nodes were tested with both explicit and implicit Euler integration methods. Time steps were 0.01 ms for the implicit method and were resolution-dependent for the explicit method. We found that the weak scaling (increasing model size) was good for both methods. Depending on the model size, strong scaling (speedup at a larger number of cores) was satisfactory for the explicit method, and more limited for the implicit method. The implicit solver was generally slower; only at a resolution of 25 µm and on a relatively small number of cores it was as fast as the explicit solver. We conclude that whole-heart simulations at 25 µm resolution are technically feasible, although not practical yet on currently available systems.
Fichier principal
Vignette du fichier
CinC2020-126.pdf (179.97 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

hal-02943513 , version 1 (19-09-2020)
hal-02943513 , version 2 (01-03-2022)

Identifiers

Cite

Mark Potse, Emmanuelle Saillard, Denis Barthou, Yves Coudière. Feasibility of Whole-Heart Electrophysiological Models With Near-Cellular Resolution. CinC 2020 - Computing in Cardiology, Sep 2020, Rimini / Virtual, Italy. ⟨10.22489/CinC.2020.126⟩. ⟨hal-02943513v2⟩
121 View
161 Download

Altmetric

Share

Gmail Facebook X LinkedIn More