Concurrent Visualization in a Production Supercomputing Environment
Ellsworth, D.
Green, B.
Henze, C.
Moran, P.
Sandstrom, T.
AMTl, NASA Ames Res. Center, Moffett Field, CA;
This paper appears in: Visualization and Computer Graphics, IEEE Transactions on
Publication Date: Sept.-Oct. 2006
Volume: 12,
Issue: 5
On page(s): 997-1004
Location: Research Triangle Park, NC, USA,
ISSN: 1077-2626
INSPEC Accession Number: 9288947
Digital Object Identifier: 10.1109/TVCG.2006.128
Current Version Published: 2006-11-20
Abstract
We describe a concurrent visualization pipeline designed for operation in a production supercomputing environment. The facility was initially developed on the NASA Ames "Columbia" supercomputer for a massively parallel forecast model (GEOS4). During the 2005 Atlantic hurricane season, GEOS4 was run 4 times a day under tight time constraints so that its output could be included in an ensemble prediction that was made available to forecasters at the National Hurricane Center. Given this time-critical context, we designed a configurable concurrent pipeline to visualize multiple global fields without significantly affecting the runtime model performance or reliability. We use MPEG compression of the accruing images to facilitate live low-bandwidth distribution of multiple visualization streams to remote sites. We also describe the use of our concurrent visualization framework with a global ocean circulation model, which provides a 864-fold increase in the temporal resolution of practically achievable animations. In both the atmospheric and oceanic circulation models, the application scientists gained new insights into their model dynamics, due to the high temporal resolution animations attainable
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