SCHEDULE: NOV 16-22, 2013
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11 PFLOP/s Simulations of Cloud Cavitation Collapse
SESSION: ACM Gordon Bell Finalist I
EVENT TYPE: ACM Gordon Bell Finalists
TIME: 11:30AM - 12:00PM
SESSION CHAIR: Michael L. Norman
AUTHOR(S):Diego Rossinelli, Babak Hejazialhosseini, Panagiotis Hadjidoukas, Costas Bekas, Alessandro Curioni, Adam Bertsch, Scott Futral, Steffen Schmidt, Nikolaus Adams, Petros Koumoutsakos
ROOM:201/203
ABSTRACT:
We present unprecedented, high throughput simulations of cloud cavitation collapse on 1.6 million cores of Sequoia reaching 55% of its nominal peak performance, corresponding to 11 PFLOP/s. The destructive power of cavitation reduces the lifetime of energy critical systems such as internal combustion engines and hydraulic turbines, yet it has been harnessed for water purification and kidney lithotripsy. The present two-phase flow simulations enable the quantitative prediction of cavitation using 13 trillion grid points to resolve the collapse of 15'000 bubbles. We advance by one order of magnitude the current state-of-the-art in terms of time to solution, and by two orders the geometrical complexity of the flow. The software successfully addresses the challenges that hinder the effective solution of complex flows on contemporary supercomputers, such as limited memory bandwidth, I/O bandwidth and storage capacity. The present work redefines the frontier of high performance computing for fluid dynamics simulations.
Chair/Author Details:
Michael L. Norman (Chair) - San Diego Supercomputer Center
Diego Rossinelli - ETH Zurich
Babak Hejazialhosseini - ETH Zurich
Panagiotis Hadjidoukas - ETH Zurich
Costas Bekas - IBM Zurich Research Laboratory
Alessandro Curioni - IBM Zurich Research Laboratory
Adam Bertsch - Lawrence Livermore National Laboratory
Scott Futral - Lawrence Livermore National Laboratory
Steffen Schmidt - Technical University Munich
Nikolaus Adams - Technical University Munich
Petros Koumoutsakos - ETH Zurich
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The full paper can be found in the ACM Digital Library