KVM on Clusters: Tackling the Disk I/O Bottleneck for HPC Virtualization

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Executive Summary

Extending virtualization technology into high-performance, cluster platforms generates exciting new possibilities. For example, runtime environments can be extended and tailored to each user or application, which in turn enables broader library support and customization as well as cross-cluster compatibility. Dynamic job consolidation on compute nodes can be used for more efficient hardware utilization. Virtual machines can be suspended to and resumed from disk and can even be migrated to other clusters, preserving complete states and configurations. Live migration of virtual machines can also augment the fault tolerant aspects of the system by moving applications away from failing nodes.

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