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.

Energy-Efficiency Evaluation of Intel KNL for HPC Workloads

Calore, Enrico
Primo
;
Gabbana, Alessandro
Secondo
;
Schifano, Sebastiano Fabio
Penultimo
;
Tripiccione, Raffaele
Ultimo
2018

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.
978-161499842-6
Energy; HPC; KNL; Lattice Boltzmann; MCDRAM; Memory; Computer Science
File in questo prodotto:
File Dimensione Formato  
1804.01911.pdf

accesso aperto

Descrizione: Pre-print
Tipologia: Pre-print
Licenza: Creative commons
Dimensione 1.66 MB
Formato Adobe PDF
1.66 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2388320
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? ND
social impact