Section: Partnerships and Cooperations

National Initiatives

ANR SOLHAR

(http://solhar.gforge.inria.fr/doku.php?id=start ).

• ANR MONU 2013 Program, 2013 - 2016 (36 months)

• Identification: ANR-13-MONU-0007

• Coordinator: Inria Bordeaux/LaBRI

• Other partners: CNRS-IRIT, Inria-LIP Lyon, CEA/CESTA, EADS-IW

• Abstract: This project aims at studying and designing algorithms and parallel programming models for implementing direct methods for the solution of sparse linear systems on emerging computers equipped with accelerators. The ultimate aim of this project is to achieve the implementation of a software package providing a solver based on direct methods for sparse linear systems of equations. Several attempts have been made to accomplish the porting of these methods on such architectures; the proposed approaches are mostly based on a simple offloading of some computational tasks (the coarsest grained ones) to the accelerators and rely on fine hand-tuning of the code and accurate performance modeling to achieve efficiency. This project proposes an innovative approach which relies on the efficiency and portability of runtime systems, such as the StarPU tool developed in the runtime team (Bordeaux). Although the SOLHAR project will focus on heterogeneous computers equipped with GPUs due to their wide availability and affordable cost, the research accomplished on algorithms, methods and programming models will be readily applicable to other accelerator devices such as ClearSpeed boards or Cell processors.

ANR Songs

Simulation of next generation systems (http://infra-songs.gforge.inria.fr/ ).

• ANR INFRA 2011, 01/2012 - 12/2015 (48 months)

• Identification: ANR-11INFR01306

• Coordinator: Martin Quinson (Inria Nancy)

• Other partners: Inria Nancy, Inria Rhône-Alpes, IN2P3, LSIIT, Inria Rennes, I3S.

• Abstract: The goal of the SONGS project is to extend the applicability of the SimGrid simulation framework from Grids and Peer-to-Peer systems to Clouds and High Performance Computation systems. Each type of large-scale computing system will be addressed through a set of use cases and lead by researchers recognized as experts in this area.

ANR MOEBUS

Scheduling in HPC (http://moebus.gforge.inria.fr/doku.php ).

• ANR INFRA 2013, 10/2013 - 9/2017 (48 months)

• Coordinator: Denis Trystram (Inria Rhône-Alpes)

• Other partners: Inria Bordeaux.

• Abstract: This project focuses on the efficient execution of parallel applications submitted by various users and sharing resources in large-scale high-performance computing environments

ADT K'Star

(http://kstar.gforge.inria.fr/#!index.md )

Participants : Olivier Aumage, Nathalie Furmento, Samuel Pitoiset, Samuel Thibault.

• Inria ADT Campaign 2013, 10/2013 - 9/2015 (24 months)

• Coordinator: Thierry Gautier (team MOAIS, Inria Montbonnot) and Olivier Aumage (team RUNTIME, Inria Bordeaux - Sud-Ouest)

• Abstract: The Inria action ADT K'Star is a joint effort from Inria teams MOAIS and RUNTIME to design the Klang-OMP source-to-source OpenMP compiler to translate OpenMP directives into calls to the API of MOAIS and RUNTIME respective runtime systems (XKaapi for MOAIS, StarPU for RUNTIME).

C2S$@$Exa - Computer and Computational Sciences at Exascale

Participant : Olivier Aumage.

• Inria IPL 2013 - 2017 (48 months)

• Coordinator: Stéphane Lantéri (team Nachos, Inria Sophia)

Since January 2013, the team is participating to the C2S$@$Exa http://www-sop.inria.fr/c2s_at_exa Inria Project Lab (IPL). This national initiative aims at the development of numerical modeling methodologies that fully exploit the processing capabilities of modern massively parallel architectures in the context of a number of selected applications related to important scientific and technological challenges for the quality and the security of life in our society. This collaborative effort involves computer scientists that are experts of programming models, environments and tools for harnessing massively parallel systems, algorithmists that propose algorithms and contribute to generic libraries and core solvers in order to take benefit from all the parallelism levels with the main goal of optimal scaling on very large numbers of computing entities and, numerical mathematicians that are studying numerical schemes and scalable solvers for systems of partial differential equations in view of the simulation of very large-scale problems.

MULTICORE - Large scale multicore virtualization for performance scaling and portability

Participants : Emmanuel Jeannot, Denis Barthou [RUNTIME project-team, Inria Bordeaux - Sud-Ouest] .

Multicore processors are becoming the norm in most computing systems. However supporting them in an efficient way is still a scientific challenge. This large-scale initiative introduces a novel approach based on virtualization and dynamicity, in order to mask hardware heterogeneity, and to let performance scale with the number and nature of cores. It aims to build collaborative virtualization mechanisms that achieve essential tasks related to parallel execution and data management. We want to unify the analysis and transformation processes of programs and accompanying data into one unique virtual machine. We hope delivering a solution for compute-intensive applications running on general-purpose standard computers.