Section: Other Grants and Activities
National Contracts and Projects
ANR grant: ALPAGE (ALgorithmique des Plates-formes À Grande Échelle), 3 years, 2005-2008
Please see the 2007 activity report for a description of the Alpage project. 2008 was the last year of the project, which has been quite successfully evaluated by ANR. A final workshop will take place in March 2009.
Yves Robert was leading the Rhône-Alpes site of this project. Anne Benoit, Loris Marchal and Frédéric Vivien were the permanent members who participated to this project.
ANR grant: Stochagrid (Scheduling algorithms and stochastic performance models for workflow applications on dynamic Grid platforms), 3 years, ANR-06-BLAN60192-01, 2007-2010
Please see the 2007 activity report for a description of the Stochagrid project. In the first 12 months, we have investigated timed-Petri nets to model the mapping of workflows with stage replication, and we have succeeded in deriving an optimal polynomial algorithm to compute the period in the bounded multi-port model with overlap. Quite interestingly, the period is no longer the bottleneck resource, the critical path becomes more complex. The latter work was conducted in collaboration with Bruno Gaujal (LIG Grenoble). We have also investigated several multi-criteria algorithms and heuristics. Anne Benoit and Yves Robert are leading this project.
The project is entirely conducted within the GRAAL team (Anne Benoit and Yves Robert are the permanent members involved).
ANR grant CICG-05-11: LEGO (League for Efficient Grid Operation), 3 years, 2006-2008
The aim of this project is to provide algorithmic and software solutions for large scale architectures; our focus is on performance issues. The software component provides a flexible programming model where resource management issues and performance optimizations are handled by the implementation. On the other hand, current component technology does not provide adequate data management facilities, needed for large data in widely distributed platforms, and does not deal efficiently with dynamic behaviors. We choose three applications: ocean-atmosphere numerical simulation, cosmological simulation, and sparse matrix solver. We propose to study the following topics: Parallel software component programming; Data sharing model; Network-based data migration solution; Co-scheduling of CPU, data movement and I/O bandwidth; High-perf. network support. The Grid'5000 platform provides the ideal environment for testing and validation of our approaches.
E. Caron is leading the project, which comprises six teams: Graal /LIP (Lyon), PARIS/IRISA (Rennes), RUNTIME/LaBRI (Bordeaux), ENSEEIHT/IRIT (Toulouse), Cerfacs (Toulouse) and CRAL/ENS-Lyon (Lyon). A. Amar, R. Bolze, Y. Caniou, F. Desprez, J.-S. Gay and C. Tedeschi also participate to this project.
ANR grant ANR-06-CIS-010: SOLSTICE (SOlveurs et simulaTIon en Calcul Extrême), 3 years, 2007-2009
The objective of this project is to design and develop high-performance parallel linear solvers that will be efficient to solve complex multi-physics and multi-scale problems of very large size (10 to 100 millions of equations). To demonstrate the impact of our research, the work produced in the project will be integrated in real simulation codes to perform simulations that could not be considered with today's technologies. This project also comprises LaBRI (coordinator), Cerfacs , INPT-IRIT, CEA-CESTA, EADS-CCR, EDF R&D, and CNRM. We are more particularly involved in tasks related to out-of-core factorization and solution, parallelization of the analysis phase of sparse direct solvers, rank detection, hybrid direct-iterative methods and expertise site for sparse linear algebra.
Emmanuel Agullo, Alfredo Buttari, Philippe Combes and Jean-Yves L'Excellent participate to this project. Bora Uçar (arrival January 1, 2009) will also participate.
ANR grant ANR-06-MDCA-009: Gwendia (Grid Workflow Efficient Enactment for Data Intensive Applications), 3 years, 2007-2009
The objective of the Gwendia (http://gwendia.polytech.unice.fr/doku.php )project is to design and develop workflow management systems for applications involving large amounts of data. It is a multidisciplinary project involving researchers in computer science (including GRAAL) and in life science (medical imaging and drug discovery). Our work consists in designing algorithms for the management of several workflows in distributed and heterogeneous platforms and to validate them within Diet on the Grid'5000 platform.
SEISCOPE Consortium (2006-2008)
The SEISCOPE project coordinated by Geosciences Azur focuses on wave propagation problems and seismic imaging. Our parallel solver Mumps has been used extensively for finite-difference modeling of acoustic wave propagation. We also started using the large-scale test problems arising from this project to design and experiment our out-of-core approaches. The SEISCOPE project is supported by the ANR (French Research Agency), and by BP, CGG, SHELL and TOTAL.
Emmanuel Agullo and Jean-Yves L'Excellent participated to this collaboration.