<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Aydin, Galip</style></author><author><style face="normal" font="default" size="100%">Zhigang Qi</style></author><author><style face="normal" font="default" size="100%">Pierce, Marlon</style></author><author><style face="normal" font="default" size="100%">Geoffrey C. Fox</style></author><author><style face="normal" font="default" size="100%">Yehuda Bock</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Architecture, Performance, and Scalability of a Real-Time Global Positioning System Data Grid</style></title><secondary-title><style face="normal" font="default" size="100%">PEPI Physics of the Earth and Planetary Interiors, Special issue on Computational Challenges in Geosciences</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">CGL</style></keyword><keyword><style  face="normal" font="default" size="100%">Grid computing</style></keyword><keyword><style  face="normal" font="default" size="100%">message-oriented middleware</style></keyword><keyword><style  face="normal" font="default" size="100%">Publish/subscribe middleware</style></keyword><keyword><style  face="normal" font="default" size="100%">Real-time GPS</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2007</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/17/2007</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">163</style></volume><pages><style face="normal" font="default" size="100%">347-359</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">We describe the architecture of our real time SensorGrid system, which supports the real-time message routing and processing of Global Positioning System data. The current system processes 1 Hz position data from 85 stations in Southern and Central California. Our system is built on a computer network-enabled, topic-based publish/subscribe system and is extensible to other data sources. In order to determine the performance and the upper limits of scalability, we have conducted and present here a set of systematic test evaluations of our implementation. Through these tests, we are able to show that performance does not degrade over time, that the system will handle up to 1000 simultaneous data providers or data consumers with a single message broker, and that multiple message brokers can be linked to provide scalability beyond 1000 providers or consumers.</style></abstract><label><style face="normal" font="default" size="100%">Community Grids Lab</style></label></record></records></xml>