Talks

2012

Parallel revised simplex for primal block angular LP problems
J. A. J. Hall and E. Smith
Contributed talk at PMAA 2012, Birkbeck University of London, UK: 28th June 2012

Promoting hyper-sparsity in the revised simplex method
J. A. J. Hall and Q. Huangfu
Contributed talk at APMOD 12, Paderborn, Germany: 28th March 2012

2011

A high performance dual revised simplex solver
J. A. J. Hall and Q. Huangfu
Contributed talk at the 9th International Conference on Parallel Processing and Applied Mathematics Conference: 13th September 2011

Matrix-free IPM with GPU acceleration
J. A. J. Hall and E. Smith
Contributed talk at the Strathclyde Numerical Analysis Conference: 29th June 2011

High performance computing and the simplex method
J. A. J. Hall, Q. Huangfu and E. Smith
Presentation at the LANCS Workshop on Modelling and Solving Complex Optimisation Problems: 12th April 2011

2010

A high performance dual revised simplex solver
J. A. J. Hall, Q. Huangfu and E. Smith
Invited Oxford University Computational Mathematics and Applications seminar, Rutherford Appleton Laboratory: 2nd December 2010

Towards a practical parallelisation of the revised simplex method
J. A. J. Hall, E. Smith and Q. Huangfu
Contributed talk the IMA Conference on Numerical Linear Algebra and Optimisation: 14th September 2010

A parallel revised simplex solver for large scale block angular LP problems
J. A. J. Hall and E. Smith
Computational Management Science 10 - Vienna: 29th July 2010

The Future of the Simplex Method
J. A. J. Hall
Haute École de Gestion - Geneva, Seminar: 29th June 2010

2009

The Mathematical legacy of ECOSSE
J. A. J. Hall
ECOSSE Retrospective Symposium: 17th April 2009

2008

High performance implementations of the simplex method for linear programming
J. A. J. Hall
ENSEEIHT seminar: 8th April 2008

Computational linear optimization
J. A. J. Hall
ENSEEIHT seminar: 2nd April 2008

2007

Parallel solution of block angular LP problems using Kaul's algorithm
İ. İ. Boduroğlu, J. A. J. Hall and J. D. Hogg
School of Mathematics ERGO seminar: 7th November 2007

Parallel basis matrix triangularisation for hyper-sparse LP problems
J. A. J. Hall
Contributed talk the IMA Conference on Numerical Linear Algebra and Optimisation: 14th September 2007

Scalable massively parallel simplex algorithms for block-structured linear programs
İ. İ. Boduroğlu, J. A. J. Hall and J. D. Hogg
Contributed talk the IMA Conference on Numerical Linear Algebra and Optimisation: 14th September 2007

Parallel basis matrix triangularisation for hyper-sparse LP problems
J. A. J. Hall
Invited talk at the joint EUROPT-OMS Meeting 2007: 4th July 2007

Exploiting hyper-sparsity when computing preconditioners for conjugate gradients in interior point methods
J. A. J. Hall, Ghussoun Al-Jeiroudi and Jacek Gondzio
Contributed talk at the Dundee Numerical Analysis Conference: 27th June 2007

Computational issues in linear programming
J. A. J. Hall
Invited seminar at CERFACS: 15th May 2007

Computational linear optimization
J. A. J. Hall
Maxwell Symposium on Computational Mathematics: 15th March 2007


2006

Parallel matrix inversion for the revised simplex method - A study
J. A. J. Hall
Contributed talk at the Sparse Days Meeting 2006 at CERFACS: 15th-16th June 2006


2005

Parallelisation of the revised simplex method for general large scale LP problems
J. A. J. Hall
Contributed talk at the International Conference on Numerical Optimization and Numerical Linear Algebra 2005 (ICNLAO 2005): 9-10th August 2005

SYNPLEX, a task-parallel scheme for the revised simplex method
J. A. J. Hall
Contributed talk at the Second International Workshop on Combinatorial Scientific Computing (CSC05): 23rd June 2005

SYNPLEX, a task-parallel scheme for the revised simplex method
J. A. J. Hall
ERGO seminar: 15th June 2005

Towards a practical parallelisation of the simplex method
J. A. J. Hall
Invited seminar at the Mathematics Division, University of Dundee: 19th March 2005

The practical revised simplex method
J. A. J. Hall
University of Edinburgh graduate seminar: 26th January 2005


2004

Parallelisation of the revised simplex method for general large scale LP problems
J. A. J. Hall
Contributed talk at Matrices in Statistics and Optimization: 18th October 2004

Parallelisation of the revised simplex method for general large scale LP problems
J. A. J. Hall
Contributed talk at APMOD 04: 21st June 2004


2003

Efficient global optimization: testing, reliability and efficiency
J. A. J. Hall, K. I. M. McKinnon and T. Mayer
Invited seminar at Université Paul Sabatier: 14th October 2003

Hyper-sparsity in the revised simplex method and how to exploit it
J. A. J. Hall and K. I. M. McKinnon
Invited seminar at CERFACS: 9th October 2003

Hyper-sparsity in the revised simplex method and how to exploit it
J. A. J. Hall and K. I. M. McKinnon
Contributed talk at the Dundee Numerical Analysis Conference: 25th June 2003

Efficient global optimization: refinements and extensions
J. A. J. Hall, K. I. M. McKinnon and T. Mayer
Invited seminar at the School of Mathematics of Cardiff University: 26th February 2003


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