High order seismic simulations on the intel xeon phi processor (Knights landing)

Alexander Heinecke, Alexander Breuer, Michael Bader, Pradeep Dubey

Publikation: Beitrag in Buch/Bericht/KonferenzbandKonferenzbeitragBegutachtung

26 Zitate (Scopus)

Abstract

We present a holistic optimization of the ADER-DG finite element software SeisSol targeting the Intel® Xeon Phi™ x200 processor, codenamed Knights Landing (KNL). SeisSol is a multi-physics software package performing earthquake simulations by coupling seismic wave propagation and the rupture process. The code was shown to scale beyond 1.5 million cores and achieved petascale performance when using local time stepping for the computationally heavy seismic wave propagation. Advancing further along these lines, we discuss the utilization of KNL’s core features, the exploitation of its two-level memory subsystem (which allows for efficient out-of-core implementations), and optimizations targeting at KNL’s 2D mesh on-die interconnect. Our performance comparisons demonstrate that KNL is able to outperform its previous generation, the Intel® Xeon Phi ™ coprocessor x100 family, by more than 2.9× in time-to-solution. Additionally, our results show a 3.4× speedup compared to latest Intel® Xeon® E5v3 CPUs.

OriginalspracheEnglisch
TitelHigh Performance Computing - 31st International Conference, ISC High Performance 2016, Proceedings
Redakteure/-innenJack Dongarra, Julian M. Kunkel, Pavan Balaji
Herausgeber (Verlag)Springer Verlag
Seiten343-362
Seitenumfang20
ISBN (Print)9783319413204
DOIs
PublikationsstatusVeröffentlicht - 2016
Veranstaltung31st International Conference on High Performance Computing, ISC High Performance 2016 - Frankfurt, Deutschland
Dauer: 19 Juni 201623 Juni 2016

Publikationsreihe

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Band9697
ISSN (Print)0302-9743
ISSN (elektronisch)1611-3349

Konferenz

Konferenz31st International Conference on High Performance Computing, ISC High Performance 2016
Land/GebietDeutschland
OrtFrankfurt
Zeitraum19/06/1623/06/16

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