11 PFLOP/s simulations of cloud cavitation collapse

Diego Rossinelli, Babak Hejazialhosseini, Panagiotis Hadjidoukas, Costas Bekas, Alessandro Curioni, Adam Bertsch, Scott Futral, Steffen J. Schmidt, Nikolaus A. Adams, Petros Koumoutsakos

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

65 Scopus citations

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 ow 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 ow. The software successfully addresses the challenges that hinder the effective solution of complex ows 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 uid dynamics simulations.

Original languageEnglish
Title of host publicationProceedings of SC 2013
Subtitle of host publicationThe International Conference for High Performance Computing, Networking, Storage and Analysis
PublisherIEEE Computer Society
ISBN (Print)9781450323789
DOIs
StatePublished - 2013
Event2013 International Conference for High Performance Computing, Networking, Storage and Analysis, SC 2013 - Denver, CO, United States
Duration: 17 Nov 201322 Nov 2013

Publication series

NameInternational Conference for High Performance Computing, Networking, Storage and Analysis, SC
ISSN (Print)2167-4329
ISSN (Electronic)2167-4337

Conference

Conference2013 International Conference for High Performance Computing, Networking, Storage and Analysis, SC 2013
Country/TerritoryUnited States
CityDenver, CO
Period17/11/1322/11/13

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