When viewing the Technical Program schedule, on the far righthand side
is a column labeled "PLANNER." Use this planner to build your own
schedule. Once you select an event and want to add it to your personal
schedule, just click on the calendar icon of your choice (outlook
calendar, ical calendar or google calendar) and that event will be
stored there. As you select events in this manner, you will have your
own schedule to guide you through the week.
You can also create your personal schedule on the SC11 app (Boopsie) on your smartphone. Simply select a session you want to attend and "add" it to your plan. Continue in this manner until you have created your own personal schedule. All your events will appear under "My Event Planner" on your smartphone.
A new Computational Paradigm in Multiscale Simulations: Application to Brain Blood Flow
SESSION: ACM Gordon Bell Award Finalists 2
EVENT TYPE: ACM Gordon Bell Finalist
TIME: 2:15PM - 3:00PM
SESSION CHAIR: Thom H. Dunning, Jr.
AUTHOR(S):Leopold Grinberg, Vitali Morozov, Dimitry Fedosov, Joseph Insley, Michael Papka, Kalyan Kumaran, George Karniadakis
ABSTRACT: Interfacing atomistic-based with continuum-based simulation codes is now required in many multiscale physical and biological systems. We present the computational advances that have enabled the first multiscale simulation on 190,740 processors by coupling a high-order (spectral element) Navier-Stokes solver with a stochastic
(coarse-grained) Molecular Dynamics solver based on Dissipative Particle Dynamics (DPD). The key contributions are proper interface conditions for overlapped domains, topology-aware communication, SIMDization, multiscale
visualization and a new domain partitioning for atomistic solvers. We study blood flow in a patient-specific cerebrovasculature with a brain aneurysm, and analyze the interaction of blood cells with the arterial walls endowed with a glycocalyx causing thrombus formation and eventual aneurysm rupture. The macro-scale dynamics (about 3 billion unknowns) are resolved by Nektar - a spectral element solver; the micro-scale flow and cell dynamics within the aneurysm are resolved by an in-house version of DPD-LAMMPS (for an equivalent of about 100
Thom H. Dunning, Jr. (Chair) - National Center for Supercomputing Applications