Component Based Programming Environment*

Abstract. In these years, grid computing is probably the most promising ap-proach for building large scale and cost effective applications. However, this very popular approach needs a sophisticated software infrastructure to address several requirements. One of these requirements is the ability to sustain a pre-dictable performance in front to the fluctuations related to the dynamic nature of a grid. In this paper we describe design and realization of a Performance Contract System, a software infrastructure that manages the computational ker-nel of a grid application with the aim to face such aspect of the grid comput-ing, as well as the strategies and the experiences to integrate it in a grid-enabling component-based programming environment still under development.