Xen and the art of virtualization
SOSP '03 Proceedings of the nineteenth ACM symposium on Operating systems principles
Diagnosing performance overheads in the xen virtual machine environment
Proceedings of the 1st ACM/USENIX international conference on Virtual execution environments
A case for high performance computing with virtual machines
Proceedings of the 20th annual international conference on Supercomputing
Proceedings of the 2nd ACM SIGOPS/EuroSys European Conference on Computer Systems 2007
Quantifying the performance isolation properties of virtualization systems
Proceedings of the 2007 workshop on Experimental computer science
Proceedings of the 2nd workshop on System-level virtualization for high performance computing
The PARSEC benchmark suite: characterization and architectural implications
Proceedings of the 17th international conference on Parallel architectures and compilation techniques
Paravirtualization for HPC systems
ISPA'06 Proceedings of the 2006 international conference on Frontiers of High Performance Computing and Networking
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As the number of cores increases in multi-core processors, more applications execute at the same time. In this paper we present a simple and non-intrusive approach that guarantees performance isolation for High Performance Applications. This is achieved using virtualization by creating multiple virtual machines on the same processor, which can be seen as different Performance Domains. While previously this technique has been explored for increasing utilization, in this work we exploit it for improving performance of multiple co-executing applications. For the purpose of this work we have studied two different virtualization approaches: (i) conventional hosted virtualization and (ii) bare-metal virtualization. To study the feasibility of this technique, we analyze the performance of applications when executing within a virtual machine. The isolation properties provided by both virtualization methods offer performance predictability for the executed applications. Our experimental results show that the performance overhead of executing on a virtualized environment is not significant, with the bare-metal virtualization resulting in an overhead of only 3%. Most importantly, virtualization is able to eliminate in some cases the negative effects of co-execution interference, thus applications running on virtual machines may achieve a better performance than running natively on the system.