Roger Menday Forschungszentrum Jülich Cracow Grid Workshop 2006 SPARQLing UNICORE R. Menday, A. Streit Research Centre Jülich, Germany

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Presentation transcript:

Roger Menday Forschungszentrum Jülich Cracow Grid Workshop 2006 SPARQLing UNICORE R. Menday, A. Streit Research Centre Jülich, Germany

Roger Menday Forschungszentrum Jülich Cracow Grid Workshop 2006 DEISA based JRA7 - Joint Research Activity 7 New ways to access the Grid infrastructure Distributed European Infrastructure for Supercomputing Applications

Roger Menday Forschungszentrum Jülich Cracow Grid Workshop 2006 Roctopus ! A high-level API for programming Grids One interface - multiple implementations (targets UNICORE 5 and UNICORE 6 and …) Model based on resources – Site, Storage, Task, File, etc (Uses a URI scheme for naming these resources) Basis for DESHL command line environment Use it to write concise Grid client applications

Roger Menday Forschungszentrum Jülich Cracow Grid Workshop 2006 Web 1.0 Web 2.0 Web 3.0 mashups Semantic Web GRDDL RDF/A Gmail GoggleMaps Atom SPARQL Tabulator AJAX REST GData

Roger Menday Forschungszentrum Jülich Cracow Grid Workshop 2006 Web/Grid Services ? Not really that much to do with the Web … SOAP almost always bound to HTTP So, why not just use HTTP ? Semantic Web/Grid ? Surely good stuff, but more semantics than web ?

Roger Menday Forschungszentrum Jülich Cracow Grid Workshop 2006 How to get the Grid into the Web world ? Something other than JSR 168 Build everything in the web-style (very appealing, but lots of commitment to WS …) So …

Roger Menday Forschungszentrum Jülich Cracow Grid Workshop 2006 HTTP Façade … over a Grid Style it as you want ! (HTML + AJAX, Flash, ‘thicker’ clients, etc) ModelUsers Grid Resources ViewRepresentations as RDF (or XHTML with embedded RDF) ControllerRESTfull HTTP

Roger Menday Forschungszentrum Jülich Cracow Grid Workshop 2006 Resources making up the Grid as HTTP URI’s Follow REST Use RDF to enrich links between the resources Embed RDF into normal pages using RDF/A (single page for both human and machine consumers) Syndicate the content using Atom/RSS (jobs status, sites on/off line, etc) The web as a single database (see the Tabulator, ) Queryable using SPARQL

Roger Menday Forschungszentrum Jülich Cracow Grid Workshop 2006 Mashup

Roger Menday Forschungszentrum Jülich Cracow Grid Workshop 2006 Going Further … … using the ‘web style’ for the actual middleware ?