Summary of Grid Portal Architecture Workshop March 6 2003 Tokyo GGF7

1. Summary of Grid Portal Architecture WorkshopMarch 6 2003 TokyoGGF7 PTLIU Laboratory for Community Grids Geoffrey Fox Computer Science, Informatics, Physics Indiana University, Bloomington IN 47404 http://www.infomall.org gcf@indiana.edu

2. Grid Portal Architecture Workshop • Organized by Dennis Gannon, Geoffrey Fox and Mary Thomas • These are co-chairs of GCE working group – this topic is a rather focused subset of GCE mandate • We have a pending Grid Information document describing “full” GCE activities – See C&C:P&E special issue of 28 papers which provided “data” for this summary • 8 am to 1.50 pm Thursday March 6 2003, 50 attendees • 9 Presentations followed by discussion • Talks were asked to address a set of questions prepared ahead of time • This differentiated workshop from earlier meetings with “project updates” • Appropriate because broad area reasonably well covered • Final discussion agreed to produce a Grid Forum Information Document entitled Portal Component Architecture

3. Source of Overview of Grid Computing Environments GGF Information Document • Last Half of 2001: Call from GCE RG for Papers for Journal special issues – 28 papers submitted and reviewed • Published in Concurrency and Computation: Practice and Experience Vol. 14, Grid Computing Environments Special Issue 13-15, Fall 2002 • http://aspen.ucs.indiana.edu/gce/gce2001index.html • Augmented by chapters (about 14) in Fran Berman, Geoffrey Fox and Tony Hey, ‘Grid Computing: Making the Global Infrastructure a Reality’, ISBN 0-470-85319-0, John Wiley & Sons Ltd, Chichester, 2003. See http://www.grid2002.org • Other key papers which we knew about

4. Questions Addressed by Speakers • Are the current portal frameworks, such as Jetspeed, sufficient for all our requirements? • Is the portlet model the right one for Grid applications? • When is the Web “pull” model insufficient for Grid applications? • What Grid services are needed to make Grid portals useful? • Are the proposed OGSA core Grid services appropriate and useable by Grid portals? What other Grid middleware implications are there for Grid portal interoperability? • What are the requirements for a messaging and notification model to be used by Grid portals? • How do we build a GridShell? How does one create a user’s Grid Context? • How do we design a Grid portal architecture that best supports collaboration? • Two important standard have emerged: WSIA (Web Services for Interactive Applications) and WSRP (Web Services for Remote Portals). Are these sufficient for the requirements of Grid Applications?

5. Typical Jetspeed Portal Each Tab displays multiple Portal ComponentEach user interface component maps to aGrid Service

6. Workshop Speakers • Introduction and Workshop Charge Dennis Gannon • Overview of GCE and Grid Portal Issues Geoffrey Fox • Background: OGSA, WSIA and WSRP and Grid Contexts Dennis Gannon • GridLab Portal Technology Michael Russell • GridPort Technology Mary Thomas • The CHEF Portal Charles Severance • The Grid Portal Generator Toyotaro Suzumura • GENIUS and EnginFrame: GRID Portal across Research and Industry • Roberto Barbera and Andrea Rodolico • Mississippi Portal Tom Haupt

7. Portal Component Architecture Document • GGF Information Document based on workshop • 1 Overview/motivation • 2 Portal Component Architecture (examples, general issues) • 3 Using Component-based Portals Today • 4 Futures of Portal Component Paradigms • 4.1 New paradigms • 4.2 Enhancing current paradigms • 4.3 Portal Component Design issues • 4.4 Security Considerations • Appendix: Examples of use of current Component-based Portals • Draft should be completed by GGF8 where it be discussed in a GCE meeting