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Performance Evaluation of HPC Benchmarks on VMware’s ESXi Server

  • Qasim Ali
  • Vladimir Kiriansky
  • Josh Simons
  • Puneet Zaroo
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7155)

Abstract

A major obstacle to virtualizing HPC workloads is a concern about the performance loss due to virtualization. We will demonstrate that new features significantly enhance the performance and scalability of virtualized HPC workloads on VMware’s virtualization platform. Specifically, we will discuss VMware’s ESXi Server performance for virtual machines with up to 64 virtual CPUs as well as support for exposing virtual NUMA topology to guest operating systems, enabling the operating system and applications to make intelligent NUMA aware decisions about memory allocation and process/thread placement. NUMA support is especially important for large VMs which necessarily span host NUMA nodes on all modern hardware. We will show how the virtual NUMA topology is chosen to closely match physical host topology, while preserving the now expected virtualization benefits of portability and load balancing. We show that the benefit of exposing the virtual NUMA topology can lead to performance gains of up to 167%. Overall, we will show close to native performance on applications from SPEC MPI V2.0 and SPEC OMP V3.2 benchmarks virtualized on our prototype VMware’s ESXi Server.

Keywords

Non Uniform Memory Architecture (NUMA) ESXi High Performance Computing (HPC) virtual NUMA (vNUMA) virtualization 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Qasim Ali
    • 1
  • Vladimir Kiriansky
    • 1
  • Josh Simons
    • 1
  • Puneet Zaroo
    • 1
  1. 1.VMwareUSA

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