||Oracle Tips by Burleson
Chapter 2 Grid, Utility
Computing and Clusters
Open Grid Services
Over the years, many standards for grid
computing have evolved and many leading researchers and IT vendors
have contributed common specifications. The Open Grid Services
Architecture (OGSA) represents an evolution towards a Grid system
architecture based on Web services concepts and technologies. With
the release of Globus Tool Kit 3.0 (GT3), the Globus Project now
offers an open source implementation of version 1 of the OGSI (Open
Grid Services Infrastructure) Specification, a key building block in
the OGSA framework.
GT3 includes standards and software that
provides Grid Security (GSI), remote job submission and control
(GRAM), high-performance secure data transfer (GridFTP), and
consistent interfaces to system and service information (MDS). All
of the components provided by the Globus Tool Kit Version-2 for
building Grid infrastructures and for developing Grid applications
remain available in GT3. GT3 has strong support from vendors.
Thus, the OGSA effort provides basic services
and the grid community is developing services to sit on its top.
OGSA describes a set of implementation and platform independent
protocols and services. These define technology and infrastructure
of the next generation of Grids defined in terms of Grid Services,
closely allied to Web Services, which supports the sharing and
coordinated use of diverse resources in dynamic distributed virtual
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