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Wide Interest Seminar – Pierre KESTENER (CEA)

  Friday 15 February 2019 at 14h00

  Conference       Salle de conférence Jean-Claude ANDRE - CERFACS    

Title:
Multi-architecture implementation of Spectral Difference Methods (SDM) for compressible flows using performance portable programing tools (c++ kokkos)

Abstract:
One of the most difficult techonological challenge associated with the so called exascale race is the design of an hardware architecture much more energy efficient than usual ones. For at least the next five years, all the competitors (US, China, Japan, Europe) are putting hard work at designing homegrown processor technology (e.g. 64bit ARM CPU in Japan or Sunway processor in China). The diversity of already available as well as coming processor architectures constitutes a heavy burden for high performance and parallel software developper at choosing the right software programing tools. While directive based programing approaches (OpenMP / OpenACC) are well suited to porting large legacy codes, new library based programing tools, mostly written in C++, provide an alternative approach for designing hardware-aware high-level parallel applications.

In this talk, I will report on using the C++ Kokkos library (and MPI) for designing a new multi-architecture performance portable implementation of the high-order spectral difference methods (SDM) numerical schemes familly used in compressible hydrodynamics. I will first introduce the Kokkos library in the context of other performance portable tools, the I’ll give some details of our implementation, example of applications in astrophysical context as well as show performance measurements on several hardware platforms (Intel Skylake, KNL, ARM ThunderX2 and several Nvidia GPU processors).

CALENDAR

Monday

27

May

2024

🎓 PhD Defense: Thibault GIOUD

Monday 27 May 2024From 14h00 at 18h00

  Phd Thesis       Cerfacs, Toulouse, France    

Thursday

30

May

2024

Young PhD day (JDD2024@Cerfacs) – 30/05/2024

Thursday 30 May 2024From 9h00 at 17h00

  Journée des Doctorants       CERFACS     

Monday

03

June

2024

High fidelity simulations of Turbomachinery flows

From Monday 3 June 2024 to Wednesday 5 June 2024

  Training    

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