Exploring the Behaviour of Fine-Grain Management for Virtual Resource Provisioning
نویسندگان
چکیده
The virtualization of resources in SMP machines with Xen offers automatic round-robin based coarse-grain assignment of VMs to physical processors and manual assignment via privileged commands. However, two problems can arise in Grid environments: (1) if Xen’s sEDF scheduler assigns the VMs, then some processors could be over or underutilized and the VMs could receive more resources than specified, and (2) manual assignment is not feasible in a dynamic environment and also requires being aware of each node’s heterogeneity. Our approach proposes an enhanced fine-grain assignment of SMP’s virtualized resources for Grid environments by means of a local resource manager (LRM). We have developed a prototype which adds a partitioning layer of subsets of physical resources. Our experimental results show that our approach achieves a flexible assignment of resources. At the same time, due to the fine-grain access, a more efficient resource assignment is achieved compared to the original mechanism.
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