[CAnet - news] Grid Portals and Web 2.0 for cyberp-infrastructure and platforms

[For most scientific users, portals will be the most common way to interface
with grids and cyber-infrastructure platforms. A good example of a platform
cyber-infrastructure portal is the Eucalyptus project where architectural
collaborators can interact and link together various web services and
workflows such as rendering grids, network web services for HDTV, etc. The
following IBM site provides a good tutorial on how to build a portal with
Web 2.0 tools, WSRF, etc-- BSA]

Eucalyptus portal
http://iit-iti.nrc-cnrc.gc.ca/projects-projets/eucalyptus_e.html


IBM portal development

http://www-128.ibm.com/developerworks/grid/library/gr-stdsportal3/index.html

Built on top of grid middleware, grid portals act as gateways to the grid
because they smooth the learning curve of using grid. In the first of this
three-part "Development of standards-based grid portals" series, we give an
overview of grid portals, focusing on today's standards-based (JSR 168 and
Web Services for Remote Portlets (WSRP) V1.0) second-generation grid
portals. In Part 2, we develop three portlets to illustrate how a grid
portal can be built using JSR 168-compliant portlets. And here in Part 3, we
discuss the application of WSRP and the future of grid portals.


Today, grid portals play an important role as resource and application
gateways in the grid community. Most of all, grid portals provide
researchers with a familiar UI via Web browsers, which hide the complexity
of computational and data grid systems. In this three-part series, we gave a
general review of portals and discussed first- and second-generation grid
portals. We built three grid portlets that demonstrate how a basic grid
portal can be constructed using JSR 168-compliant portlets. We illustrated
how these grid portlets are reused through WSRP and considered the future of
grid portal development.

JSR 168 and WSRP V1.0 are two specifications that aim to solve
interoperability issues between portlets and portlet containers. In
particular, today's grid portals are service-oriented. On one hand, portals
are acting as service clients to consume traditional data-centric Web
services. On the other hand, portals are providing presentation-centric
services so federated portals can be easily built.

With basic grid related functions like proxy manager and job submission
successfully implemented, advanced grid portals today are aimed at the
integration of complex applications, including visualisation and workflow
systems. Web 2.0 techniques were presented, and Ajax was recommended for
portal development to make grid portals more interactive and attractive to
users. In the future, grid portals should also aim to include existing Web
applications and, as security techniques become more developed, credential
delegation will play an important role in federation and sharing of grid
services

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