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Numerical Reproducibility

This seminar took place on May 3, 2016 @ 1:30PM-4:30PM (UTC+2). The link to the video is below.

Table of Contents

Practical information

Nathalie Revol, Philippe Langlois and Stef Graillat will present the main challenges encountered when trying to achieve numerical reproducibility and will present recent research work on this topic.

  • Nathalie gave a general introduction and explained the kind of difficulties that could be encountered even in simple sequential codes.
  • Stef presented several numerical techniques that can be used to control the accuracy of the computation. He also explained how they can be applied to numerical kernels.
  • Philippe explained how they managed to apply some of these techniques to a real HPC parallel code with little performance loss.

Webcast/Video

Here is the link to the video. If you have any trouble with the flashplayer, here is a direct link to the mpeg4 video.

video_thn.png

Here are the slides:

To interact during the presentation (questions, comments), we used this pad that we keep for the record.

Persons in charge

  • Grenoble: Arnaud Legrand, Frédéric Desprez, Pierre Neyron
  • Bordeaux: Luka Stanisic, Emmanuel Agullo, Nicolas P. Rougier, Ludovic Courtès, …
  • Rennes: Martin Quinson
  • Besançon: Louis-Claude Canon

Locations

  • Grenoble: Inria in the large amphitheater (Arnaud Legrand)
  • Besançon: en 404C
  • Lyon:
  • Bordeaux:
  • Rennes:
  • Paris:
  • …

Practical Session

To be announced. It’s not clear yet whether a practical session is adequate for this topic or not.