Tag Archives: Annual Report

Numerical Linear Algebra Group Activities 2020

The Numerical Linear Algebra Group had a productive year in 2020, despite working remotely from March onwards because of the pandemic. This post summarizes what we got up to. Publications are not included here, but many of them can be found on MIMS EPrints under the category Numerical Analysis; see also these news stories about our publications.

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Craig Lucas, Nick Higham, Xinye Chen, Steven Elsworth, Xiaobo Liu, Michael Connolly, Mantas Mikaitis, Len Freeman, Massimiliano Fasi, Pierre Blanchard, Sven Hammarling, Asad Raza Aitor Mehasi Mehasi, Stephanie Lai, Gian Maria Negri Porzio, Thomas McSweeney, Mawussi Zounon, Françoise Tisseur, Srikara Pranesh, Yuqing Zhang, Eleni Vlachopoulou, March 2020.

Software

We make our research codes available as open source, principally on GitHub; see the repositories of ConnollyFasiHighamLiuPranesh, Tisseur, and Zounon.

We also put MATLAB software on MATLAB Central File Exchange and on our own web sites, e.g., the Rational Krylov Toolbox (RKToolbox).

PhD Students

We welcomed new PhD students Xinye Chen and Thomas Seleiro.

Steven Elsworth successfully defended his PhD thesis Rational Krylov Methods and Machine Learning Approaches to Time Series Forecasting in March 2020 .

Michael Connolly took an internship with MathWorks from July to September 2020.

Postdoctoral Research Associates (PDRAs)

Mantas Mikaitis, previously an EPSRC Doctoral Prize Fellow in the group, is now working on the ICONIC project in the group.   During the year he successfully defended his PhD thesis Arithmetic Accelerators for a Digital Neuromorphic Processor in the Department of Computer Science.

Massimiliano Fasi left the group in September 2020 and is now working at Örebro University in Sweden.

Roberto Cahuantzi  was a member of the group from March to September 2020, working with Stefan Güttel.

Recognition and Service

Jack Dongarra received the 2020 IEEE Computer Society’s Computer Pioneer Award.

Srikara Pranesh and Michael Connolly won first and second best poster prizes, respectively, at the SIAM UKIE Section Meeting, Edinburgh, January 2020.

Françoise Tisseur received the London Mathematics Society’s Fröhlich Prize.

Theo Mary received an honourable mention for the 2020 Householder Prize and the 2021 SIAG/LA Early Career Prize. He also received a grant from the Faculty of Engineering Sciences of Sorbonne University for a project on”Mixed precision algorithms for HPC”.

Sixteen publications by members of the NLA group feature among the top 40 most read articles in two SIAM journals, both leading venues for publications in numerical linear algebra.

Stefan  Güttel was awarded the 2021 James H. Wilkinson Prize in Numerical Analysis and Scientific Computing.

Nick Higham received the IMA Gold Medal 2020.

Theo Mary has been awarded the 2021 SIAG/LA Early Career Prize by the SIAM Activity Group on Linear Algebra.

Grants

Stefan Güttel’s and Nick Higham’s Alan Turing Fellowships have been extended by one year to September 2021.

Stefan Güttel received a Small Project Grant from the Alan Turing Institute.

Nick Higham and Françoise Tisseur received funding for work on multi-precision algorithms from Lawrence Livermore National Laboratory under the Exascale Computing Project.

Nick Higham and Françoise Tisseur received funding from The MathWorks, Inc. to support a PhD student to work on exploiting multiprecision arithmetic.

Massimiliano Fasi is one of the participants of the 2020 INdAM-GNCS project “Low-rank methods for linear algebra problems with data-sparse structure” funded by the Scientific Computing Group of the Istituto Nazionale di Alta Matematica “Francesco Severi”.

External Presentations

SIAM UKIE Annual Meeting 2020, Edinburgh, January 10: Connolly, Liu, Negri Porzio, Pranesh, Higham, Pranesh and Tisseur.
SIAM Conference on Parallel Processing for Scientific Computing (PP20) in Seattle, Washington, US, February 12 – 15: Fasi, Mary, Mikaitis, Pranesh and Zounon.
Theo Mary, Performance and Accuracy of Mixed-Precision Matrix Factorizations, SIAM PP20, February, 2020.
Srikara Pranesh, Point Arithmetic for the Solution of Linear System of Equations, SIAM PP20, February, 2020.
Mawussi Zounon, Opportunities for Multi Precision Computation in Memory Bound Applications, SIAM PP20, February, 2020.
Nick Higham, Are Numerical Linear Algebra Algorithms Accurate at Extreme Scale and at Low Precisions?, in E-NLA Online seminar series on Numerical Linear Algebra, April 29, 2020.
Nick Higham, Random Orthogonal Matrices in High Performance Computing, Masked Guest Speaker, King Abdullah University of Science and Technology, 2020.
Nick Higham, The Anatomy of the World’s Fastest Linear Equation Solver, Online Distinguished Lecture, The Hong Kong Polytechnic University, September 2020.
Theo Mary, Mixed Precision Low Rank Compression of Data Sparse Matrices, Communications in NLA, online, September 2020.
Nick Higham, Rehabilitating Correlations, Leicester Actuarial Science Society and Students Union Mathematical Society, 2020.
Theo Mary, Mixed precision arithmetic: hardware, algorithms and analysis, London Mathematical Society Virtual Graduate Student Meeting, November, 2020.
Nick Higham, Mathematics of today’s floating-point arithmetic, London Mathematical Society Naylor Lecture, November 20, 2020.
Françoise Tisseur, Towards Reliable Eigensolvers for Nonlinear Eigenvalue Problems, in E-NLA Online seminar series on Numerical Linear Algebra, November 25, 2020.

Other Notable Tweets

Numerical Linear Algebra Group Activities 2019

The Numerical Linear Algebra Group had a busy year in 2019. This post summarizes what we got up to. Publications are not included here, but many of them can be found on MIMS EPrints under the category Numerical Analysis; see also these news stories about our publications.

Marcus Webb joined the group in September 2019 as Lecturer in Applied Mathematics.

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Some of the group at the 2019 SIAM Conference on Computational Science and Engineering.

Software

We make our research codes available as open source, principally on GitHub; see the repositories of ConnollyFasiHighamLiuPraneshZounon.

We also put MATLAB software on MATLAB Central File Exchange and on our own web sites, e.g., the Rational Krylov Toolbox (RKToolbox).

PhD Students

Massimiliano Fasi successfully defended his PhD Computing Matrix Functions in Arbitrary Precision Arithmetic in May 2019.

Postdoctoral Research Associates (PDRAs)

Massimiliano Fasi joined us in April 2019 to work with Nick Higham on algorithms for high-performance numerical linear algebra.  He was a Visiting Fellow at the University of Pisa from November 2019 to January 2020.

Mantas Mikaitis joined us in October 2019 on a EPSRC Doctoral Prize Fellowship, having just completed his PhD in the School of Computer Science.

Pierre Blanchard left the group in May 2019 and is now a Numerical Software Engineer at Arm.

Maksims Abalenkovs and Theo Mary left the group in September 2019. Maksims is now a Research Software Engineer with the Science and Technology Facilities Council and Theo is a CNRS researcher at LIP6 in Paris.

Grants

Stefan Güttel, Nick Higham and Françoise Tisseur were awarded a new 30-month KTP project with Arup.  See this news story.

Presentations at Conference and Workshops

Workshop on Scientific Computing and Optimization with Applications to Image and Data Analysis, Hong Kong Baptist University, January 12, 2019: Higham.
Due Giorni di Algebra Lineare Numerica, Sapienza University of Rome, February 18 – 19, 2019: Negri Porzio.
SIAM Conference Computational Science and Engineering (CSE19) in Spokane, USA, February 25 – March 1: Blanchard, Dongarra, Elsworth, Hammarling, Higham, Mary, Pranesh, Tisseur and Zounon.
Liverpool SIAM-IMA Student Chapter Early Career Researcher Conference, University of Liverpool, April 3-5, 2019: Higham.
Royal Society Meeting on Numerical Algorithms for High-Performance Computational Science, April 8 – 9: Blanchard, Fasi, Mary, Pranesh, Zounon.
The 12th International Conference on Numerical Optimization and Numerical Linear Algebra, Shangrao, Jiangxi, China, April 15-18, 2019: Higham.
2nd IMA and OR Society Conference on Mathematics of Operational Research,Birmingham, April 25-26, 2019: Riccietti.
Data-Centric Materials Science and Engineering. Microstructure Fingerprinting and Digital Twinning for Industry 4.0, University of Manchester, May 14-15, 2019: Higham.
Structured Matrix Days, Limoges, France, May 23 – 24, 2019: Mary.
Advances in Numerical Linear Algebra: Celebrating the Centenary of the Birth of James H. Wilkinson, May 29-30,2019: Blanchard, Dongarra, Fasi. Güttel, Hammarling, Higham, Lucas, Tisseur and Zounon. Highlights of the conference.
SIAM UKIE National Student Chapter Conference, University of Manchester, June 10-11, 2019: Fasi.
Gene Golub SIAM Summer School  at the Paul Langevin, Aussois, June 17-28, 2019: Rogers.
Summer School on Optimization, Big Data and Applications (OBA), Veroli, Italy, June 30 – July 6, 2019: Riccietti.
The International Congress on Industrial and Applied Mathematics (ICIAM 2019), Valencia, Spain, July 15-19: Fasi, Güttel, Higham, Pranesh and Tisseur.
International Conference on Continuous Optimization (ICCOPT), Berlin, Germany, August 5-8, 2019: Riccietti.
Franco–German–Swiss (FGS) Conference on Optimization, Nice, France, September 17-20, 2019: Riccietti.
Model Order Reduction Summer School 2019, Academisch Genootschap, Eindhoven, The Netherlands, September 23-27, 2019: Higham.
Computational Science Engineering, Data Science and Artificial Intelligence by Total R&D (MATHIAS), Serris, France, October 14-17, 2019: Riccietti.

Conference and Workshop Organization

ANLA19 group photo

ANLA19 group photo 

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Vanni Noferini listening to a question from Cleve Moler at ANLA19.

Visitors

Rob Corless from University of Western Ontario visited the group in November 2019.

Recognition and Service

  • Françoise Tisseur delivered the Olga Taussky-Todd Lecture and Nick Higham was an invited speaker at the International Congress on Industrial and Applied Mathematics (ICIAM) in Valencia, Spain, July 2019.
  • Jack Dongarra received the SIAM/ACM Prize in Computational Science and Engineering at the SIAM Conference on Computational Science and Engineering (CSE19)
  • Jack Dongarra was elected as a Foreign Member of the Royal Society.
  • Françoise Tisseur was elected as SIAM UKIE Section President, 2019-20.
  • Steven Elsworth obtained a SIAM Student Travel Award to attend the 2019 SIAM Conference on Computational Science and Engineering (CSE19) in Spokane, Washington.
  • Nick Higham received the London Mathematics Society’s Naylor Prize and Lectureship.
  • Nick Higham delivered the Feng Kang Distinguished Lecture at the Institute of Computational Mathematics and Scientific/Engineering Computing, Chinese Academy of Sciences, Beijing, in April 2019, and the LAA Lecture (formerly the Hans Schneider Lecture) in the Department of Mathematics, University of Wisconsin, Madison, December 2019.

Other Notable Tweets

Numerical Linear Algebra Group Activities 2018

The Numerical Linear Algebra Group, many of whom are in the October 2018 photo below, had a busy year. This post summarizes what we got up to. Publications are not included here, but many of them can be found on MIMS EPrints under the category Numerical Analysis.

As well as the new group members mentioned below, Stephanie Lai joined the group in September as Executive Assistant to Nick Higham. Stephanie, who holds an MMath degree from the University of Manchester, helps to maintain this website, which launched this autumn. Martin Lotz left the group in August 2018 and is now an Associate Professor at The University of Warwick.

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Software

Together with Jack Dongarra’s team at the University of Tennessee the group is one of the two partners involved in the development of PLASMA: Parallel Linear Algebra Software for Multicore Architectures.

PhD students Weijian Zhang, Steven Elsworth and Jonathan Deakin continued to develop Etymo—a technology for developing knowledge graphs, including Etymo Scholar, a discovery engine for AI research.

We make our research codes available as open source, principally on GitHub; see the repositories of Connolly, Fasi, Higham, Liu, PraneshRelton, Sego, Tisseur, ZhangZounon.

We also put MATLAB software on MATLAB Central File Exchange and on our own web sites, e.g., the Rational Krylov Toolbox (RKToolbox).

PhD Students

We welcomed new PhD students Michael Connolly, Xiaobo Liu, and Conor Rogers.

Weijian Zhang successfully defended his PhD on Evolving Graphs and similarity-based Graphs with Applications in October 2018.

Postdoctoral Research Associates (PDRAs)

Theo Mary joined us in January 2018 to work jointly on the ICONIC project.

Mawussi Zounon, who was working on the Parallel Numerical Linear Algebra for Extreme Scale Systems (NLAFET) project, moved over in November 2018 to the position of KTP Associate in a three-year Knowledge Transfer Partnership with NAG.

Jakub Sistek returned to the Czech Academy of Sciences after the completion of the project Programming Model INTERoperability ToWards Exascale (INTERTWinE).

Prashanth Nadukandi completed his Marie Skłodowska-Curie Individual Fellowship in September 2018 and is now a Technical Advisor in Advanced Mathematics at the Repsol Technology Lab, Móstoles, Spain.

Maksims Abalenkovs completed his work on the EPSRC project SERT: Scale-free, Energy-aware, Resilient and Transparent Adaptation of CSE Applications to Mega-core Systems.

Presentations at Conferences and Workshops

UK and Republic of Ireland Section of SIAM Annual Meeting, National Oceanography Centre, Southampton, January 11, 2018: Blanchard, Nadukandi.

Waseda Research Institute for Science and Engineering Institute for Mathematical Science Kickoff Meeting, Waseda University, Tokyo, March 6, 2018: Higham.

SIAM Conference on Parallel Processing for Scientific Computing, Waseda University, Tokyo, Japan, March 7-10, 2018: Hammarling, Higham, Mary, Zounon.

Conference on Scientific Computing and Approximation, Purdue University, March 30-31, 2018: Higham.

SIAM Conference on Applied Linear Algebra, May 4-8, 2018, Hong Kong Baptist University: Elsworth, Güttel, Zemaityte.

Structured Matrix Days 2018, May 14-15, 2018, ENS Lyon, France: Mary, Tisseur.

Mathematical Modelling, Numerical Analysis and Scientific Computing, Kácov, Czech Republic, May 27-June 1, 2018: Higham, Tisseur.

International Conference on Approximation and Matrix Functions, May 31 and June 1, 2018, Université de Lille, France: Güttel.

Bohemian Matrices and Applications, University of Manchester, June 20-22, 2018: Higham.

International Supercomputing conference (ISC18), Frankfurt, June 24-28, 2018: Hammarling, Zounon.

10th International Workshop on Parallel Matrix Algorithms and Applications (PMAA18), June 27-29, 2018, ETH Zurich: Zounon.

6th IMA Conference on Numerical Linear Algebra and Optimization, June 27-29 2018, University of Birmingham: Blanchard, Mary, Tisseur.

SIAM Annual Meeting, Portland, USA, July 9-13, 2018: Blanchard, Higham, Tisseur.

JuliaCon 2018, London, August 7-11, 2018: Higham.

Sparse Day Meeting 2018, September 26-27 2018, Toulouse, France: Mary.

Conference and Workshop Organization

Visitors

Recognition and Service

    • Nick Higham gave the Samuel D. Conte Distinguished Lecture at the Department of Computer Science, Purdue University, USA, in March 2018.
  • Massimilano Fasi was presented with the SIAM Student Chapter Certificate of Recognition 2018.

Other Notable Tweets