Numerical Linear Algebra Group 2017

The Manchester Numerical Linear Algebra Group (many of whom are in the October 2017 photo below) was involved in a variety of activities this 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.



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 released Etymo—a search engine for machine learning research and development.

We continue to make our research codes available, which is increasingly done on GitHub; see the repositories of Fasi, Higham, Relton, Sego, Tisseur, Zhang. 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

New PhD students Gian Maria Negri Porzio and Thomas McSweeney joined the group in September 2017.

Postdoctoral Research Associates (PDRAs)

Sam Relton, who was working on the Parallel Numerical Linear Algebra for Extreme Scale Systems (NLAFET) project, left in June 2017 to take up a position at the University of Leeds. Negin Bagherpour joined NLAFET in March 2017, leaving in November 2017.

Srikara Pranesh joined the project in November 2017. Pierre Blanchard joined us in October 2017 to work jointly on the ICONIC project (which started in June 2017) and NLAFET.

Presentations at Conferences and Workshops

UK and Republic of Ireland Section of SIAM Annual Meeting, University of Strathclyde, January 12, 2017: Fasi, Gwynne, Higham, Zemaityte, Zhang.

2017 Joint Mathematics Meetings, Atlanta, January 4-7, 2017: Higham.

Workshop on Matrix Equations and Tensor Techniques, Pisa, Italy, February 13-14 2017: Fasi

Due Giorni di Algebra Lineare Numerica, Como, Italy, February 16-17, 2017: Fasi

International Conference on Domain Decomposition Methods DD24, Svalbard, Norway, February 6-10, 2017: Sistek.

Workshop on Batched, Reproducible, and Reduced Precision BLAS, Atlanta, February 23-25, 2017: Hammarling, Relton.

SIAM Conference on Computational Science and Engineering, Atlanta, February 27-March 3, 2017: Relton, Zounon. See the blog posts about the meeting by Nick Higham and Sam Relton.

High Performance Computing in Science and Engineering (HPCSE) 2017, Hotel Solan, Czech Republic, May 22-25, 2017: Sistek

Advances in Data Science, Manchester, May 15-16, 2017: Zhang.

27th Biennial Conference on Numerical Analysis, Glasgow, June 27-30, 2017: Tisseur.

Householder Symposium XX on Numerical Linear Algebra, The Inn at Virginia Tech, June 18-23, 2017: Tisseur.

SIAM Annual Meeting, Pittsburgh, July 10-14, 2017: Zhang (see this SIAM News article about Weijian’s presentation). A Storify of the conference is available in PDF form.

ILAS 2017 Conference, Iowa State University, USA, July 24-28, 2017: Güttel

24th IEEE Symposium on Computer Arithmetic, London, July 24-26, 2017: Higham (see this blog post by George Constantinides).

LMS-EPSRC Symposium on Model Order Reduction, Durham, UK, August 8-17, 2017: Güttel

Euro-Par 2017, 23rd International European Conference on Parallel and Distributed Computing, August 28-September 1, 2017: Zounon.

INdAM Meeting Structured Matrices in Numerical Linear Algebra: Analysis, Algorithms and Applications, Cortona, Italy, September 4-8, 2017: Fasi, Tisseur.

2017 Woudschoten Conferences, Zeist, The Netherlands, 4-6 October 2017: Tisseur.

ICERM Workshop on Recent Advances in Seismic Modeling and Inversion, Brown University, USA, November 6-10, 2017: Güttel. A video recording of this talk is available.

Conference and Workshop Organization

Güttel co-organized the SIAM UKIE Annual Meeting 2017 at the University of Strathclyde January 12, 2017 and the GAMM ANLA Workshop on High-Performance Computing at the University of Cologne, September 7-8, 2017.

The Manchester SIAM Student Chapter organized an Manchester Chapter Auto Trader Industry Problem Solving Event on February 22, 2017 and the 7th Manchester SIAM Student Chapter Conference on May 5, 2017.

The group organized three minisymposia at the SIAM Conference on Computational Science and Engineering, Atlanta, February 27-March 3, 2017:


Franco Zivcovic (Università degli Studi di Trento) visited the group from September 2017-January 2018.

Knowledge Transfer

The Sabisu KTP project, which ended in December 2016, has been awarded the highest grade of “Outstanding” by the KTP Grading Panel. A new KTP project with Process Integration Ltd. is under way, led by Stefan Güttel.

The MSc project of Thomas McSweeney was sponsored by NAG and produced a code for modified Cholesky factorization that will appear in the NAG Library.

Recognition and Service

Stefan Güttel continued his terms as Secretary/Treasurer of the SIAM UKIE section and vice-chair of the GAMM Activity Group on Applied and Numerical Linear Algebra.

Nick Higham served the first year of his two-year term as President of SIAM.

Weijian Zhang was awarded a SIAM Student Travel Award to attend the SIAM Annual Meeting 2017 in Pittsburgh.

Massimiliano Fasi and Mante Zemaityte were selected to present posters at the SET for Britain 2017 competition, which took place at the House of Commons, London. Fasi’s poster was “Finding Communities in Large Signed Networks with the Weighted Geometric Mean of Laplacians” and Zemaityte’s was “A Shift-and-Invert Lanczos Algorithm for the Dynamic Analysis of Structures”.

Jakub Sistek served as treasurer of the Czech Network for Mathematics in Industry.

Tweets of the Year

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