Numerical Linear Algebra Group
The NLA group members meet each Tuesday at 10:00 am in Frank Adams room 1, Alan Turing building.
Group photo
(hires version)
Group meetings 2011/12
- 15 May 2012: no group meeting today at 10am.
See Fran's talk in the
Tropical Mathematics Seminar and Reading Group at 12:00 in FA2.
- 8 May 2012: Edvin and Nick about "Version control".
- 1 May 2012: Mary Aprahamian on "The matrix unwinding number".
- 24 April 2012: Lijing Lin on her recent work on
an improved algorithm for fractional matrix powers and the Frechet derivative.
- 17 April 2012: Natasa Strabic (University of Zagreb) on the
Cholesky algorithm for symmetric matrices.
- 27 March 2012: Francoise Tisseur on
"Function of Structured Matrices".
- 20 March 2012: Edvin Deadman on
"A Recrusive Blocked Algorithm for Computing the Matrix Square Root".
- 13 March 2012: Leo Taslaman on
Meerbergen's Q-Arnoldi method and Bai & Su's SOAR algorithm for large quadratic eigenvalue problems.
- 6 March 2012: Nick Higham on
"Org mode - a tool for note taking, task management,
producing LaTeX documents and web pages, literate programming,
and reproducible research".
- 28 February 2012: Ruediger Borsdorf on
"A Two-Sided Optimization Problem Arising in Chemistry".
- 21 February 2012: Ramaseshan on
"Optimizing sparse matrix vector multiplication using a novel
representation".
- 14 February 2012: Sam Relton: "Frechet derivative for the matrix
logarithm and computation of the condition number".
- 7 February 2012: Yuji Nakatsukasa:
"SVD and the symmetric eigenvalue problem".
- 31 January 2012: Nick Higham on citations
- 24 January 2012: Marcin Paczkowski (University of Leeds) on
"Comparison of one- and two-sided communication paradigms
of MPICH2 implementation of MPI".
- 17 January 2012: Nick Dingle: Communication avoiding in CG.
- 10 January 2012: No group meeting.
Linear Algebra Aspects of Solving PDEs with Random Data workshop.
(Semester 1) - 20 December 2011: No group meeting.
- 13 December 2011: Ramaseshan on
"Reducing communication in sparse matrix computations".
- 6 December 2011: Yuji Nakatsukasa on recent work with Nick on backward stability of
iterations for computing the Polar decomposition.
- 29 November 2011: Ramaseshan Kannan on
"A new subspace iteration algorithm for generalized eigenvalue
problems".
- 22 November 2011: Leo Taslaman on triangularization of matrix
polynomials.
- 15 November 2011: Craig Lucas.
Abstract:
In this talk I will describe the journey we took in implementing Ruediger
and Nick's Nearest Correlation Matrix algorithm efficiently in the NAG
library. Along the way I'll highlight software and architecture
optimizations and how it maps to multicore.
- 8 November 2011: Nick Higham on
Improved Inverse Scaling and Squaring Algorithms for the Matrix
Logarithm (joint work with Awad H. Al-Mohy).
- 1 November 2011: No meeting.
- 25 October 2011: Advanced Numerical Methods on GPUs". Presentation by Nick Dingle and David Silvester.
- 18 October 2011: Presentation by Lukas Steiblys.
- 11 October 2011: Nick Higham on workflow (LaTeX, BibTeX, MATLAB,
editing, ...).
- 4 October 2011: Presentation by Ramashesahn Kannan.
- 27 September 2011: Introductions, membership
(maths societies).
Need to know
Essential information for the group.Research in Numerical Linear Algebra
Events
-
NAG seminar,Wednesday 18th January 2012, 1pm,
Lecture Theatre F14, Renold Building, Univ. Manchester.
Multicore Demystified by Craig Lucas
An Introduction to CUDA Programming and the NAG Numerical Routines for GPUs by Jacques du Toit - HECToR Supercomputing Service Training.
Members
Group photo (hires version)- Hanefa Al-Qasmi
- Robert Andrew
- Mary Aprahamian
- Bahar Arslan
- Ruediger Borsdorf
- John Brooke
- Younes Chahlaoui
- Sophia Coban
- Edvin Deadman
- Nick Dingle
- Nick Higham
- Ramaseshan Kannan
- Lijing Lin
- Craig Lucas
- Yuji Nakatsukasa
- Samuel Relton
- Lukas Steiblys
- Natasa Strabic
- Vendel Szeremi
- Dan Tang
- Leo Taslaman
- Francoise Tisseur
Societies
- IMA (Institute of Mathematics and its Applications)
- ILAS (International Linear Algebra Society)
- LMS (London Mathematical Society)
- SIAM. SIAM
Activity Group on Linear Algebra (SIAG/LA).
UK and Republic of Ireland SIAM Section.
Manchester SIAM Student Chapter - Combined Membership List (AMS, SIAM, MAA)
- University of Manchester GPU Club