Toward A Meta-Grid Middleware

Institutional Desktop Grid systems are attractive for running distributed applications with significant computational requirements. While the rapid increasing number of users and applications running on Such systems does demonstrate the potential of Desktop Grid, current implementations follow the old-fashioned master-worker paradigm. Obviously, Vulnerability to failures and permanent administrative monitoring are the disadvantages of client-server architectures. Moreover, it is important to exploit existing computing systems in order to make a meta-grid middleware able to Support any kind of applications. To bypass this, we propose a novel system, called BonjourGrid, able to orchestrate multiple instances of Institutional Desk-top Grid middlewares, able to remove the risk of single-source bottleneck and failure, and able to guaranty the continuity of services in a distributed manner. We choose XtremWeb-CH, Boinc and Condor as computing systems in BonjourGrid. Thus, BonjourGrid can create a specific environment for each user based oil XtremWeb-CH, Boinc or Condor. In addition, BonjourGrid can be adapted to fulfill all the requirements of a decentralized job scheduler. In this paper, we set experimentations using the three cited systems: Boinc, Condor and XtremeWeb-CH, in order to analyze the overhead generated by BonjourGrid and its capacity to manage multiple instances of Desktop Grid. The evaluation proves that BonjourGrid is able to manage more than 400 applications instantiated in a concurrent way on an Institutional Desktop Grid using more than 1000 machines. Analyzing the execution of 405 applications with 2 110 tasks during 3 hours demonstrates the potential of BonjourGrid concept and shows that, comparing to a classical Desktop Grid, such as Condor, Boinc and XtremWeb-CH, with one central master, BonjourGrid gives an acceptable overhead.