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External Research Office
Data access and analysis with distributed federated data servers in climate
.net. (June 2006)
.net is a large public resource distributed scientific computing project. Members of the public download and run a full-scale climate model, donate their computing time to a large perturbed physics ensemble experiment to forecast the climate in the 21st century and submit their results back to the project. The amount of data generated is large, consisting of tens of thousands of individual runs each in the order of tens of megabytes. The overall dataset is, therefore, in the order of terabytes. Access and analysis of the data is further complicated by the reliance on donated, distributed, federated data servers. This paper will discuss the problems encountered when the data required for even a simple analysis is spread across several servers and how webservice technology can be used; how different user interfaces with varying levels of complexity and flexibility can be presented to the application scientists, how using existing web technologies such as HTTP, SOAP, XML, HTML and CGI can engender the reuse of code across interfaces; and how application scientists can be notified of their analysis’ progress and results in an asynchronous architecture.
Niel Massey, Tolu Aina, Myles Allen, Carl Christensen, David Frame, Daniel Goodman, Jamie Kettleborough, Andrew Martin, Stephen Pascoe, David Stainforth
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