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  1. Proceedings of the ACM SIGSPATIAL Second International Workshop on High Performance and Distributed Geographic Information Systems (HPDGIS '11)
  2. A parallel input-output system for resolving spatial data challenges: an agent-based model case study
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A parallel input-output system for resolving spatial data challenges: an agent-based model case study

Content Provider ACM Digital Library
Author Shook, Eric Wang, Shaowen
Abstract With recent advances in data collection technologies such as remote sensing and global positioning systems, the amount of spatial data being produced has been increasing at a staggering rate. Simultaneously, a shift is being experienced in computing from single-core to multi-core processors. To effectively utilize the computational power afforded by these new generation of processors for serving data-intensive geospatial applications, parallel computing techniques need to be employed. Parallel computing, however, raises new challenges associated with handling the input and output of spatial data in parallel. This paper describes a Parallel Input/Output System (PIOS) to address challenges associated with handling large amounts of diverse spatial data. The PIOS is based on a hierarchical structure that uses a scalable file partitioning strategy and combines data and metadata to enable efficient handling of terabyte-scale data sets in parallel. A spatially-explicit agent-based model is developed as a case study. Computational experiments were conducted on a supercomputer supported by the National Science Foundation. PIOS achieved ten times speedup in parallel input/output time, and was demonstrated to efficiently scale to over one thousand processing cores and handle multiple terabytes of data.
Starting Page 18
Ending Page 25
Page Count 8
File Format PDF
ISBN 9781450310406
DOI 10.1145/2070770.2070773
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2011-11-01
Publisher Place New York
Access Restriction Subscribed
Content Type Text
Resource Type Article
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