Energy-Efficiency Evaluation of Intel KNL for HPC Workloads

Enrico Calore, Alessandro Gabbana, Sebastiano Fabio Schifano, Raffaele Tripiccione

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

1 Citation (Scopus)

Abstract

In this work we focus on energy performance of the Knights Landing Xeon Phi, the latest many-core architecture processor introduced by Intel for the HPC market. We take into account the 64-core Xeon Phi 7230, and analyze the computing and energy efficiency using both the on-chip MCDRAM and the off-chip DDR4 memory as main storage for the application data domain. As a benchmark application we use a Lattice Boltzmann code heavily optimized for this architecture, and implemented using different memory data layouts to store the data-domain. We then assess the energy consumption using different data-layouts, memory configurations (DDR4 or MCDRAM), and number of threads per core.

Original languageEnglish
Title of host publicationParallel Computing is Everywhere
EditorsSanzio Bassini, Marco Danelutto, Patrizio Dazzi, Gerhard R. Joubert, Frans Peters
PublisherIOS Press
Pages733-742
Number of pages10
ISBN (Electronic)978-1-61499-843-3
ISBN (Print)978-1-61499-842-6
DOIs
Publication statusPublished - 2018
Externally publishedYes

Publication series

NameAdvances in Parallel Computing
Volume32
ISSN (Print)0927-5452
ISSN (Electronic)1879-808X

Keywords

  • Energy
  • HPC
  • KNL
  • Lattice Boltzmann
  • MCDRAM
  • Memory

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