Executing Hydrodynamic Simulation on Desktop Grid with Objectweb Proactive

In this paper, we show how with the grid middleware ObjectWeb ProActive, we have improved and adapted the deployment of a numerical Hydrodynamic Simulation application, the TELEMAC parallel System, for desktop grid. INTRODUCTION Two-dimensional mathematical models are increasingly used for the simulation of flood propagation in river plains. This type of model are now preferred to the former 1D network model with the conceptualization of the flood plain by a series of ponds, which necessitate adjusting a number of parameters in order to describe the conceptualized hydraulic transfer between ponds. However, the problem with 2D models is that they require large amount of processing time especially when large areas are to be studied. SCP id , is using on a regular basis the finite element software TELEMAC-2D. Recently it has been used for modelling the Durance River from Cadarache to Mallemort, which represent more than 50 km of river. Such a model represents 20,000 calculation nodes, and the calculation time is more than 38 hours, which prevents the engineers from taking advantage of all the benefit that the model can provide. The availability of powerful computers and high-speed network technologies as low-cost commodity components is changing the way we use computers today. These technological opportunities have led to the possibility of using distributed computing platforms as a single, unified resource, leading to what is popularly known as Grid computing. Grids enable the sharing, selection and aggregation of a wide variety of resources including supercomputers, storage systems, and specialized devices that are geographically distributed for solving large-scale computational and data intensive problems in science, engineering, and commerce. In this paper, we present the results of a collaborative effort towards the distributed, numerical Hydrodynamic Simulation. First, we describe our river modelling using finite element method. Second, we present an Open Source middleware for the Grid, 2 ObjectWeb ProActive, featuring distributed objects and deployment. Then, using ProActive, we demonstrate how to design and program a distributed version of TELEMAC, wrapping legacy code and deploying it on desktop grids. Introduction In the past decade, hydroinformatics have seen the apparition of more powerful tools in order to improve the knowing of natural phenomenon. Some of them are two dimensional free surface flow models which are especially useful for floodplain modeling. The Société du Canal de Provence (SCP id) uses a software called TELEMAC 2D to build such hydraulic models. This is a program for the …