Scheduling virtual grids: the Magrathea system
VTDC '07 Proceedings of the 2nd international workshop on Virtualization technology in distributed computing
Provide Virtual Distributed Environments for Grid computing on demand
Advances in Engineering Software
Information service of virtual machine pool for grid computing
Euro-Par'07 Proceedings of the 2007 conference on Parallel processing
Virtual Data System on distributed virtual machines in computational grids
International Journal of Ad Hoc and Ubiquitous Computing
Provide virtual machine information for grid computing
IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans
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Computing clusters of High Energy Physics institutes at universities are often shared between different user groups, having their own requirements concerning the computing infrastructure. Those requirements can lead to incompatibilities between the needed operating systems, software packages, access policies or different grid middlewares. Some of the above incompatibilities can be solved by providing different portal machines for each group. Incompatibilities at the level of the shared worker nodes of the cluster are, however, difficult to overcome. In this paper, an approach to overcome this incompatibility using the virtualization technique Xen is presented. Each physical worker node hosts different virtual machines, acting as virtual worker node for every group supported at the site. Ways to integrate this into an existing batch queue are shown. The performance of different programs used in High Energy Physics on native and virtual machines are also presented.