Scheduling for Responsive Grids |
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Authors: | Cécile Germain-Renaud Charles Loomis Jakub T. Mościcki Romain Texier |
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Affiliation: | (1) LRI, Orsay Cedex, France;(2) LAL, Orsay Cedex, France;(3) CERN, Rte Meyrin, Geneva, 1211, Switzerland |
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Abstract: | Grids are facing the challenge of seamless integration of the Grid power into everyday use. One critical component for this integration is responsiveness, the capacity to support on-demand computing and interactivity. Grid sched uling is involved at two levels in order to provide responsiveness: the policy level and the implementation level. The main contributions of this paper are as follows. First, we present a detailed analysis of the performance of the EGEE Grid with respect to responsiveness. Second, we examine two user-level schedulers located between the general scheduling layer and the application layer. These are the DIANE (distributed analysis environment) framework, a general-purpose overlay system, and a specialized, embedded scheduler for gPTM3D, an interactive medical image analysis application. Finally, we define and demonstrate a virtualization scheme, which achieves guaranteed turnaround time, schedulability analysis, and provides the basis for differentiated services. Both methods target a brokering-based system organized as a federation of batch-scheduled clusters, and an EGEE implementation is described. |
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Keywords: | Responsiveness Interactive Grids Meta-scheduler User-level scheduling |
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