HR: 0800h
AN: IN21B-0479    [Abstracts]
TI: Interactive Visualization and Monitoring of Large-Scale 3-D Mantle Convection Runs
AU: * Damon, M
EM: megandamon@gmail.com
AF: Department of Geology and Geophysics and Minnesota Supercomputing Institute, University of Minnesota, Walter Library 117 Pleasant St. SE, Minneapolis, MN 55455, United States
AU: Yuen, D
EM: daveyuen@gmail.com
AF: Department of Geology and Geophysics and Minnesota Supercomputing Institute, University of Minnesota, Walter Library 117 Pleasant St. SE, Minneapolis, MN 55455, United States
AU: Kameyama, M
EM: kameyama@jamstec.go.jp
AF: Geodynamics Center, Ehime University, 2-5, Bunkyo-cho, Matsuyama, 790-8577, Japan
AU: Knox, M
EM: mikeknox@lcse.umn.edu
AF: Laboratory of Computational Sciences and Engineering University of Minnesota, Walter Library 117 Pleasant St. SE, Minneapolis, MN 55455, United States
AU: Porter, D
EM: dhp@lcse.umn.edu
AF: Laboratory of Computational Sciences and Engineering University of Minnesota, Walter Library 117 Pleasant St. SE, Minneapolis, MN 55455, United States
AU: Sevre, E O
EM: esevre@msi.umn.edu
AF: Department of Geology and Geophysics and Minnesota Supercomputing Institute, University of Minnesota, Walter Library 117 Pleasant St. SE, Minneapolis, MN 55455, United States
AU: Woodward, P
EM: woodw001@umn.edu
AF: Laboratory of Computational Sciences and Engineering University of Minnesota, Walter Library 117 Pleasant St. SE, Minneapolis, MN 55455, United States
AB: With the imminent arrival of petascale computing in the United States by 2011, new strategies for visualizing and monitoring high-resolution numerical simulations on massively parallel computers are needed to overcome the extreme data and resource requirements. We have employed a visualization system consisting of 14 powerful Dell workstations, each with a multi-terabyte disk, connected via a high-speed network with a bandwidth on the order of a few gigabits per second to a locally situated massively parallel system with approximately 2,000 processing elements. This system has been constructed at the Laboratory of Computational Sciences and Engineering at the University of Minnesota. Near real-time interactive analysis of 3-D mantle convection using around 10 million grid points has been carried out using a client-server application capable of streaming gigabytes of simulated data to a remote Powerwall with 13 million pixels. Concurrently, we have constructed a web-portal that allows a user to monitor the same run at home or in a hotel room, using a laptop. In our case, interactive computing takes on the meaning of performing such runs for a limited duration of time, say 1 to 2 hours. This calls for a balance between grid resolution and the number of processing elements required to provide the level of interactivity needed to achieve one to a few frames per second. Our mode of operation represents a new paradigm in numerical modeling that supports a trend toward both real-time visualization and monitoring of high-resolution models and a consequent reduction in storage of raw output data, since the interactive periods are by definition short. Using this interactive strategy periodically we can facilitate long heroic runs extending over a few days.
DE: 0500 COMPUTATIONAL GEOPHYSICS (3200, 3252, 7833)
DE: 0530 Data presentation and visualization
DE: 0545 Modeling (4255)
DE: 3621 Mantle processes (1038)
SC: Earth and Space Science Informatics [IN]
MN: 2007 Fall Meeting