Laura Grigori's Home Page


Aug 22, Schwarzwald
Director of Research (DR1) INRIA
INRIA Paris, Alpines group,
joint with Laboratoire J.L. Lions, Sorbonne University
Paris, France
Phone: +33 (0) 1 44 27 93 03 (LJLL)
+ 33 (0) 1 80 49 42 60 (Inria)
Email: laura(dot)grigori(at)inria(dot)fr


| Publications |  Projects |  Software |  Group  |   Teaching |  Professional services |  Plenary talks |  Jobs | 

Short bio

I received a Ph.D. in Computer Science (december 2001) from Université Henri Poincaré, France, INRIA Lorraine. After spending two years at UC Berkeley and LBNL as a postdoctoral researcher, I have joined INRIA in january 2004. I was a member of Sage group at INRIA Rennes and Grand-Large group at INRIA Saclay - Ile de France and LRI, Paris 11 University.
Leader of Alpines, a joint group between INRIA Paris and J.L. Lions Laboratory, Sorbonne University, 2013 - 2023.
Visiting Professor at UC Berkeley during the academic years 2014-2016 and 2022-2023.
Upcoming: since May 2023, Professor of Applied and Computational Mathematics at EPFL.

Distinctions and awards

  • SIAM Fellow, 2020
  • ERC Synergy Grant for the Extreme-scale Mathematically-based Computational Chemistry project (EMC2), 2018, with E. Cances, Y. Maday, and J.-P. Piquemal, EMC2 website and more details here
  • SIAM Siag on Supercomputing Best Paper Prize 2016 for the most outstanding paper published in 2012-2015 in a journal in the field of high performance computing. With J. Demmel, M. Hoemmen, and J. Langou for the paper Communication-Optimal Parallel and Sequential QR and LU Factorizations, published in SIAM Journal on Scientific Computing 2012.
    • Selected Invited Plenary Talks More details and slides by following the Talks link.
  • Plenary Lecture, 91st Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM) , March 15-19, 2021, Kassel, Germany.
  • Lecture in the online seminar series on numerical linear algebra, July 8, 2020, slides and the talk , Communication avoiding low rank matrix approximation, a unified perspective on deterministic and randomized approaches.
  • Invited speaker, Parallel Solution Methods for Systems Arising from PDEs, September 16-20, 2019, CIRM Marseille, talk Challenges in achieving scalable and robust linear solvers.
  • Invited plenary speaker, SIAM Conference on Computational Science and Engineering, February 2019, Communication Avoiding: The Past Decade and the New Challenges, slides and the talk.
  • Invited plenary speaker, SIAM Conference on Applied Linear Algebra, May 2018.
  • Keynote speaker, 46th International Conference on Parallel Processing (ICPP-2017), Bristol, UK, August 14-17, 2017.
  • Plenary talk, Householder Symposium XX on Numerical linear algebra, June 2017, Virginia Tech
  • Invited plenary speaker, International Conference on Domain Decomposition Methods DD XXIV, February 2017, Longyearbyen, Norway.
  • Invited plenary speaker, Fifth IMA Conference on Numerical Linear Algebra and Optimization, University of Birmingham, UK, September 7-9 2016.
  • Invited speaker, Supercomputing SC15, the talk on youtube, the blog, and a picture (thanks to Anda!), Austin, November 2015.
  • Talk at College de France, online , January 2014
  • Invited plenary speaker, GAMM Workshop on Applied and Numerical Linear Algebra, September 2013
  • Invited plenary speaker, SIAM Conference on Parallel Processing for Scientific Computing 2012, Avoiding Communication in Linear Algebra , the slides and the talk .
  • Invited plenary speakery, Parallel Matrix Algorithms and Applications Conference 2010, PMAA10.

    • Main current research projects

    (more details by following the Projects link)
  • Communication Avoiding Algorithms in Linear Algebra
    Recent talk at BIRS workshop, Feb 2023, video
    SIAM CSE19 talk slides and talk
    An overview talk from SC15 video
  • Randomization in numerical linear algebra
    Recent talk at IPAM, March 2023, video
  • Low rank approximation algorithms
    Talk at the online seminar series on numerical linear algebra, July 8, 2020, slides and video
  • ERC Syngergy Grant for the Extreme-scale Mathematically-based Computational Chemistry project (EMC2), 2018, with E. Cances, Y. Maday, and J.-P. Piquemal, EMC2 website
  • Parallel preconditioners and iterative methods for scientific applications
  • Cosmic Microwave Background Data Analysis on large scale computers

    • Research Interests

  • Numerical linear algebra, deterministic and randomized algorithms
  • High performance computing for scientific applications
  • High dimensional problems and tensor computations
  • Combinatorial scientific computing
  • Mathematical Software

    • Teaching

    More details and slides here.
  • Since 2021, Coordinator for Sorbonne University as awarding university in the context of the european Master EUMaster4HPC project, more details here
  • Since 2018, Coordinator of the High Performance in Scientific Computing Major, second year of Mathematics and Applications Master, Sorbonne University.
  • Since spring 2017: High performance computing for numerical methods and data analysis, Sorbonne University, Master 2 Mathematics and Applications.
  • Spring 2016: Co-teaching CS294 class on Communication Avoiding Algorithms, with J. Demmel, UC Berkeley.
  • Fall 2015: Guest lecture in CS294 class on "Randomized Algorithms in Linear Algebra" of Ravi Kannan, November 24, 11-12:30 PM, slides .
  • Spring 2015: Reading group on Randomized numerical linear algebra, UC Berkeley.
  • Spring 2015: Guest lecturer in CS267, UC Berkeley, (lectures 13 to 16), videos here.
  • Spring 2014: High performance computing, large scale linear algebra algorithms, numerical stability , UPMC, Master 2 Mathematics and Applications.

    • Editorial boards and other responsabilities

  • Chair of the PRACE (Partnership for Advanced Computing in Europe) Scientific Steering Committee March 2021-March 2022, member 2016 - 2022, vice-chair march 2020 to march 2021.
  • Member of Scientific Committee of the Prace Fast Track Call for Proposals in support to mitigate impact of Covid 19, opened in March 2020. An analysis entitled Lessons learned from urgent computing in Europe: Tackling the COVID-19 pandemic, PNAS 2021, 118(46), is available online.
  • Member of the SIAM Fellows Selection Committee, July 2021 - June 2023.
  • Member of the SIAM Council, January 2018 - December 2023.
  • Vice-president of the Evaluation Committee of Inria, March 2018 - August 2019.
  • Chair of the SIAM SIAG on Supercomputing, January 2016 - December 2017.
  • Steering commitee member, Challenge 7: Information and communication society, ANR (Comite de Pilotage , Defi 7, French National Funding Agency), November 2016 - September 2017.
  • Program Director of the SIAM SIAG on Supercomputing, January 2014 - December 2015.
  • Member of the editorial board for the SIAM book series Software, Environments and Tools, since March 2014.
  • Associate Editor, SIAM Journal on Scientific Computing, since January 2016.
  • Associate Editor, SIAM Journal on Matrix Analysis and Applications, since January 2017.
  • Member of the editorial board, Numerical linear algebra with applications Journal, Wiley, since January 2016.
  • Area editor for Parallel Computing Journal, Elsevier, since June 2013.

    • Selected conference responsabilities

  • Co-chair of the upcoming SIAM Conference on Linear Algebra, 2024!
  • Area vice-chair for Algorithms, Supercomputing 2021
  • Co-chair of SIAM Conference on Computational Science and Engineering, 2021.
  • Co-organizer with N. Higham and J. Dongarra of Numerical algorithms for high-performance computational science meeting, funded by the Royal Society Hooke Scientific meeting, April 2019. Slides and Nick Higham's post available here.
  • Co-organizer of the 10th Gene Golub Summer School on High Performance Data Analytics, Aussois, France, June 2019.
  • Co-chair of SIAM Conference on Parallel Processing, Paris, April 2016
  • Co-chair of Parallel Matrix Algorithms and Applications PMAA Workshop, Lugano 2014
  • Topic Chair of Parallel Numerical Algorithms, EuroPar 2014
  • Area Co-chair of the Algorithms Area, Supercomputing 2013
  • Member of the best paper/ best student paper jury, Supercomputing 2012
  • Organizing committee member: SIAM Conference on Parallel Processing and Scientific Computing, February 2014, Portland, USA.
  • Program Committee member (a selection):
    Supercomputing Conferences SC 2009, SC 2010, SC 2012, SC 2015.
    IPDPS 2011, IPDPS 2013, IPDPS 2014, IPDPS 2015, IPDPS 2016, IPDPS 2021.
    ICPP 2020, ICPP 2021.
    HiPC 2014, HiPC 2015.
    PPAM 2009, PPAM 2013, PPAM 2015.
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    INRIA INRIA Paris
    Laboratoire J. L. Lions
    Sorbonne University     		Contact: Laura Grigori (Laura(dot)Grigori(at)inria(dot)fr)

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