From desktop grid to cloud computing based on BonjourGrid middleware

Desktop Grids provide computing and storage power, with a low economic cost, through the federation of free resources. Their performance relies strongly on the voluntary participation of users who make their machines available when these are unexploited. Several criteria such as number and volatility of resources make the execution of many applications in desktop grid, a great challenge. We attend today the emergence of a new concept: Cloud Computing. Similar to desktop grid, cloud computing provide resources for the execution of HPC (High Performance Computing) applications. In this context, we are interested in designing an approach, with an aim of having a hybrid execution´s environment formed by BonjourGrid desktop grid middleware and a cloud computing, to overcome the constraint of lack of resources caused by the volatility of machines.