Section: Partnerships and Cooperations

European Initiatives

• Title: High Performance Computing for Geophysics Applications

• Type: PEOPLE

• Instrument: International Research Staff Exchange Scheme (IRSES)

• Duration: January 2012 - December 2014

• Coordinator: Inria (France)

• Others partners: BCAM (Basque Center of Applied Mathematics), Spain; BRGM (Bureau de Recherches Géologiques et Minières), France; ISTerre (Institut des Sciences de la Terre, France; UFRGS (Federal University of Rio Grande do Sul), Institute of Informatics, Brazil; UNAM (National Autonomous University of Mexico) , Institute of Geophysics, Mexico;

• See also: https://project.inria.fr/HPC-GA/en

• Abstract: Simulating large-scale geophysics phenomenon represents, more than ever, a major concern for our society. Recent seismic activity worldwide has shown how crucial it is to enhance our understanding of the impact of earthquakes. Numerical modeling of seismic 3D waves obviously requires highly specific research efforts in geophysics and applied mathematics, leveraging a mix of various schemes such as spectral elements, high-order finite differences or finite elements.

  But designing and porting geophysics applications on top of nowadays supercomputers also requires a strong expertise in parallel programming and the use of appropriate runtime systems able to efficiently deal with heterogeneous architectures featuring many-core nodes typically equipped with GPU accelerators. The HPC-GA project aims at evaluating the functionalities provided by current runtime systems in order to point out their limitations. It also aims at designing new methods and mechanisms for an efficient scheduling of processes/threads and a clever data distribution on such platforms.

  The HPC-GA project is unique in gathering an international, multidisciplinary consortium of leading European and South American researchers featuring complementary expertise to face the challenge of designing high performance geophysics simulations for parallel architectures: UFRGS, Inria, BCAM and UNAM. Results of this project will be validated using data collected from real sensor networks. Results will be widely disseminated through high-quality publications, workshops and summer-schools.

• Three members of Magique-3D  (Julien Diaz, Victor Péron and Angel Rodríguez Rozas) participated to the second Workshop of HPC-GA in Bilbao on March 11th-15th, 2013, http://www.bcamath.org/en/workshops/second-workshop-of-the-hpc-ga-project .

• Manuela Longoni de Castro, Assistant Professor at UFRGS, spent one month in Magique-3D  in January 2013.

• Program: Fonds commun de coopération Aquitaine/Euskadi

• Project acronym: AKELARRE

• Project title: Méthodes numériques innovantes et logiciels performants pour la simulation de la propagation des ondes électromagnétiques en milieux complexes

• Duration: février 2011 - février 2013

• Coordinator: Hélène Barucq

• Other partners: BCAM (Basque Center of Applied Mathematics), Spain

• Abstract: This project brings together complementary skills of two research teams which are respectively located in Pau and Bilbao. The main objective of this collaboration is to develop innovative numerical methods in the field of wave propagation and to implement powerful software for the simulation of electromagnetic waves in complex media. These waves play an important role in many industrial applications and the development of such software is of great interest for many industrial enterprises located in the region. Theoretical and practical issues are considered. In particular, we focus on the mathematical analysis of boundary conditions that play a crucial role for accurate numerical simulations of waves.

• Program: PHC Procope 2012

• Project acronym: Procope Inria - TU Berlin

• Project title: Procope Inria - TU Berlin

• Duration: January 2012 - December 2013

• Coordinator: Sébastien Tordeux

• Other partners: Matheon Research Center, TU Berlin, Germany

• Abstract: This project aims in funding trips between Pau and Berlin. The young research group of Kersten Schmidt and Magique 3D are both specialist of the modeling and the simulation of the wave propagation phenomena. During this program we focus on the modeling of multiperforate plates which are present in the combustion chambers; on the derivation of absorbing boundary conditions for stratified media and on the development of precise numerical methods in the context of the Hardy problem.

  In this framework several members of Magique 3D visited the Matheon Research Center in Berlin :

  • Julien Diaz, May 7th to May 10th

  • Victor Péron spent one week in Berlin in November

  • Juliette Chabassier spent one month in Berlin

  and several members of Matheon Research Center visited Magique 3D :

  • Kersten Schmidt spent one week in Pau in November

  • Robert Gruhlke spent one week in Pau in November

  • Philipp Kliewe spent one week in Pau in November

  • Dirk Klindworth spent one week in Pau in December

  • Maxim Zeinaliyev spent two weeks in Pau in December