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http://hdl.handle.net/123456789/282
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| Title: | Geospatial Service Composition in Grid Environments (In Geospatial Web Services: Advances in Information Interoperability ) |
| Authors: | Fleuren, Tino
Müller, Paul |
| Keywords: | scientific workflow
Cloud
geospatial service
Grid |
| Issue Date: | Jan-2011 |
| Publisher: | Zhao,P. & Di, L. (Eds.), IGI Global |
| Abstract: | The composition of geospatial services (like OGC Web services) allows defining powerful geospatial simulations. In order to benefit from the compute power, parallel execution capabilities, and data management possibilities of a Grid environment (like OGSA), the workflow designer has to meet several challenges including heterogeneous service technologies (like WSRF or REST) large amounts of geospatial data, parallel execution, and instable Grid resources.
The workflow management system enacting these workflows has to support parallelism in an efficient way; it must avoid becoming a bottleneck, which is often the case with classic centralized workflow engines, where all data has to pass through the engines.
This chapter presents a workflow enactment system that maintains the robustness of centralized control (using service orchestration), but is enhanced by distributed components called proxy services that can communicate with each other to allow for efficient coupling between parallel tasks and avoiding of unnecessary data transfers (using service choreography). |
| URI: | http://dspace.icsy.de/handle/123456789/282 |
| Appears in Collections: | 01: Publications / Publikationen
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