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Introduction

Grid portals have emerged as a high-level tool for application users to take full advantage of the Grid infrastructure. While Grid middleware provides a common set of fundamental services and capabilities that are deployed across resources, Grid portals provide a way for application users to access these services transparently via a familiar web interface with the goal of executing large-scale applications over the Grid.

A Grid portal is a web based application server enhanced with the necessary software to communicate with Grid services and resources. Users can access Grid resources via the portal using a simple web browser. There is no need to install any Grid software on their PC. In general, a Grid portal provides application scientists with a customized view of Grid software and hardware resources specific to their particular problem domain and a single point of access to the Grid resources they need.

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