Programming the grid with components: models and runtime issues

International audienceThis paper describes different aspects of our research activities aiming at designing a component-based software infrastructure, called Padico, for computational Grids. Several problems were identified as obstacles to designing such an infrastructure. This paper addresses some of them especially a suitable software component model, capable of encapsulating parallel codes (GridCCM), a communication framework (PadicoTM) allowing software components to communicate between each other taking advantage of various networking technologies available within a grid infrastructure and a network topology description model, permitting an automatic deployment of software components by capturing real-world grid network topologies