Title :
Scalable Earthquake Simulation on Petascale Supercomputers
Author :
Cui, Y. ; Olsen, K.B. ; Jordan, T.H. ; Lee, K. ; Zhou, J. ; Small, P. ; Roten, D. ; Ely, G. ; Panda, D.K. ; Chourasia, A. ; Levesque, J. ; Day, S.M. ; Maechling, P.
Abstract :
Petascale simulations are needed to understand the rupture and wave dynamics of the largest earthquakes at shaking frequencies required to engineer safe structures (> 1 Hz). Toward this goal, we have developed a highly scalable, parallel application (AWP-ODC) that has achieved “M8”: a full dynamical simulation of a magnitude-8 earthquake on the southern San Andreas fault up to 2 Hz. M8 was calculated using a uniform mesh of 436 billion 40-m3 cubes to represent the three-dimensional crustal structure of Southern California, in a 800 km by 400 km area, home to over 20 million people. This production run producing 360 sec of wave propagation sustained 220 Tflop/s for 24 hours on NCCS Jaguar using 223,074 cores. As the largest-ever earthquake simulation, M8 opens new territory for earthquake science and engineering - the physics-based modeling of the largest seismic hazards with the goal of reducing their potential for loss of life and property.
Keywords :
digital simulation; earthquakes; geophysics computing; mainframes; petascale supercomputers; physics-based modeling; scalable earthquake simulation; three-dimensional crustal structure; wave propagation; Computational modeling; Earthquakes; Equations; Mathematical model; Numerical models; Propagation; Stress;
Conference_Titel :
High Performance Computing, Networking, Storage and Analysis (SC), 2010 International Conference for
Conference_Location :
New Orleans, LA
Print_ISBN :
978-1-4244-7557-5
Electronic_ISBN :
978-1-4244-7558-2
