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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

11

December

2023

Multi-architecture parallelism using Kokkos/C++ library

From Monday 11 December 2023 at 14h00 to Wednesday 13 December 2023 at 17h00

  Training    

Thursday

21

December

2023

PhD Defense : Aurélien LINÉ : ” Modulation of European near-term climate change by multi-decadal internal variability “

Thursday 21 December 2023 at 15h00

  CERFACS - Toulouse - France     Organized by Nathalie BROUSSET    

Monday

18

March

2024

Introduction to programming practices for scientific computing

Monday 18 March 2024

  Training    

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