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Numerical Reproducibility: Feasibility Issues

Philippe Langlois 1 Rafife Nheili 1 Christophe Denis 2, 3
1 DALI - Digits, Architectures et Logiciels Informatiques
LIRMM - Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier, UPVD - Université de Perpignan Via Domitia
2 CMLA - Centre de Mathématiques et de Leurs Applications
3 EDF R&D - EDF R&D
Abstract : Floating-point arithmetic may introduce failures of the numerical reproducibility between a priori similar sequential and parallel executions of HPC simulation. We present how to apply some existing techniques to part of hydrodynamic finite element simulations. We analyze how easy these techniques allow us to recover its numerical reproducibility.
Keywords : finite element simulation Tomawac floating-point arithmetic Numerical reproducibility open Telemac-Mascaret
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https://hal-lirmm.ccsd.cnrs.fr/lirmm-01141852
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Submitted on : Tuesday, April 14, 2015 - 12:05:42 AM
Last modification on : Thursday, July 2, 2020 - 5:17:18 PM
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CNRS | UNIV-PERP | DALI | LIRMM | ENS-CACHAN | UNIV-PARIS-SACLAY | MIPS | UNIV-MONTPELLIER | EDF

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Philippe Langlois, Rafife Nheili, Christophe Denis. Numerical Reproducibility: Feasibility Issues. NTMS: New Technologies, Mobility and Security, Jul 2015, Paris, France. pp.1-5, ⟨10.1109/NTMS.2015.7266509⟩. ⟨lirmm-01141852⟩

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