Scientific context
Numerical models are very useful for environmental applications.
Several difficulties must be handled simultaneously, in a
multidisciplinary context. The team SAGE undertakes research on
environmental applications and high performance computing and deals
with two subjects:
- numerical algorithms, involving parallel and grid computing,
- numerical models applied to hydrogeology and to geophysics.
These two subjects are highly interconnected: the first topic aims
at designing numerical algorithms, which lead to high efficiency on
parallel and grid architectures; these algorithms are applied to
geophysical models.
Moreover, the team SAGE, in collaboration with other partners, develops
a software platform for groundwater numerical simulations in
heterogeneous subsurface.
Research topics
- Numerical algorithms and parallel computing
- Parallel sparse linear solvers : s-step Krylov methods, deflation, Schwarz preconditioners, Domain Decomposition
- Parallel eigenproblem solvers
- Parallel time decomposition for systems of ODEs
- Parallel least-squares solvers
- Nonlinear solvers
- Stochastic models
- Uncertainty quantification methods
- Generation of random fields
- Parallel Monte Carlo simulations
- Groundwater simulations : porous media
- Groundwater simulations : porous and fractured media
- Geophysics
- Heat diffusion in soil applied to archeology
- Inverse problems in geodesy
Software
- H2OLAB Parallel
Object-oriented scientific
software platform for Heterogeneous Hydrogeology (proprietary platform,
Micas consortium)
includes software PARADIS, MP_FRAC, GW_NUM, GW_UTIL and
more; includes database H2OWEB
- GPREMS GMRES PREconditioned by Multiplicative Schwarz
(soon available as free software)
- DGMRES (included in Petsc)
- AGMRES (included in Petsc)
- GRT3D Global method for
Reactive Transport in 3D domains
- MUESLI
matrix-oriented Fortran tools providing a dynamic
array type and visualization facilities (free software)
- CANARD Boundary Element Methods for surface flows
(proprietary
software, IRISA and LEGI)
- SCILIN
Iterative linear solvers; now integrated in SCILAB (free software)
- PPAT
reliable parallel tool to trace level curves. Example: Pseudo-spectra
computation (free software)
Current national grants and collaborations
- H2MNO4 project: grant ANR MN 2012-2016
- Regional grant with Brittany: FRACINI project 2014
- GENCI: CPU time on supercomputers (each year since 2009)
- University grant: Ph-D thesis 2012-2015
- OSUR and RISC-E Network :
main partners of Sage: Geosciences/University of Rennes,
IPR/University of Rennes
- ARPHYMAT project 2007-2013
collaboration with Archeosciences/University of Rennes, IPR/University
of Rennes, Lebanese International University
- GDR MOMAS
- Maison de la Simulation
- HEMERA
large scale initiative: IPL INRIA 2010-2014
- C2S@EXA
large scale initiative: IPL INRIA 2011-2015
Current international grants and collaborations
- EXA2CT: European grant 2013-2017
- ARPHYMAT: EcoSud grant 2013-2014
- LIRIMA, team MOMAPLI 2010-2014, with university of Yaounde,
Cameroon
- LIRIMA, team EPIC 2011-2014, with university of Tunis (Lamsin),
Tunisia
- INRIA Euro-Med HYDRINV
2012-2014
coordination: team Estime/Inria/Paris
partners: UPC/Barcelona/Spain, Sevilla/Spain, LERMA/Rabat/Morocco,
LIRNE/Kenitra/Morocco, LESI/Khemis Miliana/Algeria,
LAMSIN/Tunis/Tunisia, LMHE/Tunis/Tunisia
- collaboration with University of Purdue, USA
- collaboration with University of Patras, Greece
- collaboration with American University of Beirut, Lebanon
- collaboration with Lebanese International University, Lebanon
- ERCIM
working group on computing and statistics
Previous national grants and collaborations (2004-2013)
- GRT3D project: grant with ANDRA on reactive
transport 2010-2013
- H2OGUILDE project: ADT INRIA 2011-2013
- GEOFRAC project: ARC INRIA 2011-2013
- ANR CIS 2007 : coordination of MICAS
project 2008-2011
partners Geosciences/CNRS/University of Rennes, LOMC/CNRS/University of
Le Havre, CDCSP/CNRS/University of Lyon
collaboration with ENS Cachan Bretagne/IRMAR (PhD cotutelle of one
student)
- ANR RNTL 2007 : LIBRAERO project 2008-2011
coordination FLUOREM/Lyon, partners ECL/Lyon, CDCSP/Lyon
- Regional grant with Rhône-Alpes : CINEMAS² project 2006-2011
coordination ECL/Lyon, partners INSA/Lyon, CDCSP/Lyon, University of
Liège, PLASTIC OMNIUM, FLUOREM/Lyon, VALEO, RENAULT TRUCKS
- CNRS PEPS 2010-2011: DIAMS-GPU
coordination LIP6
- GDR MOMAS
: coordination of a project on reactive transport 2010-2011
partners INRIA/Rocquencourt, University of Strasbourg, CEA
- project about granular materials 2008-2011
collaboration with IPR/University of Rennes (PhD cotutelle of one
student)
-
GDAE project: grant with ANDRA
on reactive transport 2005-2008
- GDR MOMAS
: projects on reactive transport 2002-2009
partners INRIA/Rocquencourt, University of Strasbourg
- PEPS 2007-2008
- GRID'5000
: participation in projects "Grille Rennes" 2003-2007
- IFREMER 2003-2007
Previous international grants and collaborations (2004-2013)
- MODNUM project: Cedre Grant with Lebanon 2012-2013
- INRIA Euro-Med HYDROMED
2009-2011
coordination LAMSIN/Tunis/Tunisia, partners LERMA/Rabat/Morocco,
LIRNE/Kenitra/Morocco, LMA/Annaba/Algeria, INRIA/Rocquencourt,
Geosciences/University of Rennes, ICAR-CNR/Napoli/Italia,
UPC/Barcelona/Spain
- CO-ADVISE 2009-2011
coordination INRIA/DRI, same partners as HYDROMED for SAGE (PhD
cotutelle of two PhD students)
- LIRIMA, team CSPE 2010-2011, with university of Annaba, Algeria
- participation in Joint Laboratory for Petascale Computing Inria,
Illinois 2010-2013
- SARIMA
2004-2008
- INRIA Euro-Med HYDRO
3+3 2005-2008
- PECO-NEI 2008-2009
- collaboration with University of Minnesota, USA
Some documents presenting the team SAGE
- Slides 2014 (.pdf) presented at INRIA evaluation seminar on March 18-19,
2014
- Sildes
2010 (.pdf) presented at INRIA evaluation seminar on March 18-19,
2010
- Slides 2008
(.pdf) presented at INRIA evaluation seminar
- INRIA Evaluation seminar on March 27-28, 2008: documents (zip file)
- Slides 2005 (.pps)
presented at UMR IRISA evaluation days
- Sage annual reports
