Abstract. Poznan Supercomputing and Networking Center has been involved in continuous research concerning the development of grid environments. In the scope of the PROGRESS project we designed a Grid Service Provider (GSP) which acts as a new additional layer between the grid and grid user interfaces. The introduction of the GSP enables easy development of many different grid user interfaces such as web portals and standalone applications. In this paper we present this newly distinguished item of grid-portal environment architecture, which might improve the flexibility of grid user interfaces.
SUMMARYThe grid research that has been intensely undertaken in the recent years has resulted in a long list of excellent solutions for the access to and utilization of powerful remote computing resources. Some of these solutions have emerged into standards or good practices widely accepted by the grid community. However, a lot of other important standards are yet to be found and the range of available middleware, protocols and services causes not only a serious problem when deciding on the technology to be used for a particular grid environment, but also poses a major challenge when trying to solve some ongoing issues. The lack of standards and heterogeneity of the grid middleware used is, for example, a big challenge when designing science gateways that are set to provide the scientific community with means of accessing the vast amount of the powerful grid resources delivered by multiple independent grid infrastructures administered by different types of grid management systems. In this paper, we present a method by which we addressed this problem within the PROGRESS project and how it resulted in the design of the grid resource broker plug-in mechanism, which allows the enabling of resources belonging to heterogeneous grid infrastructures within a computing portal.
SUMMARYWeb portals are one of the possible ways to access the remote computing resources offered by Grid environments. Since the emergence of the first middleware for the Grid, works have been conducted on delivering the functionality of Grid services on the Web. Many interesting Grid portal solutions have been designed help organize remote access to Grid resources and applications from within Web browsers. They are technically advanced and more and more widely used around the world, resulting in feedback from the community. Some of these user comments concern the flexibility and user-friendliness of the developed solutions. In this paper we present how we addressed the need for a flexible and user-friendly Grid portal environment within the PROGRESS project and how our approach facilitates the use of the Grid within Web portals.
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