Benjamin Depardon

Diet: new developments and recent results

Among existing grid middleware approaches, one simple, powerful, and flexible approach consists of using servers available in different administrative domains through the classic client-server or Remote Procedure Call (RPC) paradigm. Network Enabled Servers (NES) implement this model also called GridRPC. Clients submit computation requests to a scheduler whose goal is to find a server available on the grid. The aim of this paper is to give an overview of an NES middleware developed in the GRAAL team called DIET and to describe recent developments. DIET (Distributed Interactive Engineering Toolbox) is a hierarchical set of components used for the development of applications based on computational servers on the grid.

Cosmological Simulations using Grid Middleware

Large problems ranging from numerical simulation can now be solved through the Internet using grid middleware. This paper describes the different steps involved to make available a service in the DIET grid middleware. The cosmological RAMSES application is taken as an example to detail the implementation. Furthermore, several results are given in order to show the benefits of using DIET, among which the transparent usage of numerous clusters and a low overhead (finding the right resource and submitting the computing task).