Experiences with OGSA-DAI: Portlet Access and Benchmark

Portals have proven to be useful client-side applications for providing user-oriented services for accessing the grid. Grids are increasingly being used for collaborative work within the scientific community. The job processing time for high performance computations can be reduced by the usage of computational grids, with its wide availability to resources. Grid users would similarly benefit from having access to databases, mainly, those involved in collaborative data analysis of large datasets and those requiring sharing of data. OGSA-DAI provides an extension to the OGSA framework by allowing access to and integration of data held in heterogeneous data resources. In this paper, we describe our experiences in designing and building a portlet to OGSA-DAI and in testing the grid services access to a relational database by means of a synthetic database workload.