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Proceedings Paper

Out-of-core visualization using iterator-aware multidimensional prefetching
Author(s): Philip J. Rhodes; Xuan Tang; R. Daniel Bergeron; Ted M. Sparr
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Paper Abstract

Visualization of multidimensional data presents special challenges for the design of efficient out-of-core data access. Elements that are nearby in the visualization may not be nearby in the underlying data file, which can severely tax the operating system’s disk cache. The Granite Scientific Database System can address these problems because it is aware of the organization of the data on disk, and it knows the visualization method’s pattern of access. The access pattern is expressed using a toolkit of iterators that both describe the access pattern and perform the iteration itself. Because our system has knowledge of both the data organization and the access pattern, we are able to provide significant performance improvements while hiding the details of out-of-core access from the visualization programmer. This paper presents a brief description of our disk access system placing special emphasis on the benefits offered to a visualization application. We describe a simple demonstration application that shows dramatic performance improvements when used with the 39GB Visible Woman Dataset.

Paper Details

Date Published: 11 March 2005
PDF: 12 pages
Proc. SPIE 5669, Visualization and Data Analysis 2005, (11 March 2005); doi: 10.1117/12.587362
Show Author Affiliations
Philip J. Rhodes, Univ. of Mississippi (United States)
Xuan Tang, EMC Corp. (United States)
R. Daniel Bergeron, Univ. of New Hampshire (United States)
Ted M. Sparr, Univ. of New Hampshire (United States)

Published in SPIE Proceedings Vol. 5669:
Visualization and Data Analysis 2005
Robert F. Erbacher; Jonathan C. Roberts; Matti T. Grohn; Katy Borner, Editor(s)

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