Document Type

Conference Paper

Peer Reviewed

1

Publication Date

1996

Journal/Book/Conference Title

Proceedings of GIS/LIS 96

Start Page

527

End Page

539

Abstract

Because GIS software is used most effectively to address public policy problems if several alternatives, each representing the interests of different stake-holders, can be generated and evaluated during a meeting, the response time of GIS-based models can assume considerable practical importance. In this paper we present results from research that evaluates a new approach to the analysis of computationally-complex GIS-based models, with the aim of improving the performance of networked, collaborative decision-making environments. The first element of the paper centers on the use of a network of workstations (NOW) to support parallel interpolation for a large problem (1024 x 1024 cells with 10,000 control points). Computational experiments using this approach achieve a level of performance that compares favorably with a dedicated parallel supercomputer (Cray T3D). The experiments also show general promise for a large class of GIS algorithms that can be divided into large sub-problems. These results are especially significant since networked workstations present a ready source of computing power that can be accessed and used during the period of a typical group meeting.

Journal Article Version

Version of Record

Rights

Copyright © 1996 Marc P. Armstrong and Richard J. Marciano

Included in

Geography Commons

Share

COinS
 

URL

https://ir.uiowa.edu/geog_pubs/230