These introductions on the high-level services help us to better understand the basic functionalities provided by them in the context of the Globus GT3 framework. The main utility value of GT3 lies with these high-level services; it provides a framework for the creation of a computational grid.
The basic requirements for computational grids address scalable job management and resource monitoring aspects. GT3 provides these capabilities through GRAM, index services, service data constructs, and a common language definition for job descriptions. We can now better understand that there are a number of applications and services required in order to start using GRAM, and the resource management features of GT3.
Major accomplishments in this area include Condor-G and Nimrod-G. Practitioners in the grid community are expecting these meta- schedulers and resource managers to continue evolving toward utilization of the GT3-provided index services, GRAM, and the exposed XML-based information model. A common agreement on RSL, or a similar common language for job description, will further strengthen these high-level applications.
