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Sparse Days Meeting 2006 at CERFACS

Sparse Days Meeting 2006 at CERFACS

 

June 15th-16th 2006

A two-day meeting on sparse matrix matters at CERFACS, Toulouse, France, June 15th-16th, 2006.

After the excitement of hosting CSC’05 last year, we return to our normal pattern of holding our regular meeting “Sparse Days at CERFACS”. This meeting will start mid-morning on Thursday June 15th and finish mid-afternoon on the 16th. The main theme this year will be on “optimization”.

 


PICTURES



Programme of Thursday, June15th


Session on constrained optimization

10.15 – 10.45 : M. Saunders : *The LUSOL algorithm*

11.15 – 11.45 : N. Gould : Finding a well-centred point for a set of polyhedral constraints

11.45 – 12.15 : J. Hall : Parallel matrix inversion for the revised simplex method – A study

12.15 – 12.45 : C. Cartis : A new perspective on the complexity of interior point methods for linear programming

 

Session on unconstrained optimization

14.30 – 15.00 : J.D. Muller : Simultaneous time-stepping methods for optimal design

15.00 – 15.30 : A. Sartenaer : Trust-region algorithms for multilevel optimization

15.30 – 16.00 : C. Sainvitu : Use of approximate derivatives in the filter-trust-region method for unconstrained optimization

 

Session on data assimilation

16.00 – 16.30 : N.K. Nichols : Using model reduction in Gauss-Newton optimization with applications to data assimilation

17.00 – 17.30 : J. Tshimanga : On some preconditioning techniques for linear least-squares problems with multiple right-hand sides

17.30 – 18.00 : G. Desroziers : Large least-squares problems in Meteorology

 

Poster session

M. Rojas : A Comparison of Methods for the Large-Scale Trust-Region Subproblem


Programme of Friday, June 16th


Session on iterative methods for linear systems

09.15 – 09.45 : M. Arioli : A note on GMRES preconditioned by a perturbed $ LDL^T$ decomposition with static pivoting

09.45 – 10.15 : S. Dollar : Implicit factorization constraint preconditioners and permutations

10.15 – 10.45 : S. MacLachlan : Greedy strategies for multilevel partitioning

 

Session on sparse techniques

11.15 – 11.45 : G. Gundersen : Sparsity in Higher Order Methods in Optimization

11.45 – 12.15 : A. Pothen : The Optimal Computation of Hessians in Optimization

12.15 – 12.45 : Ph. L. Toint : Exploiting sparsity in optimization algorithms

 

Session on derivative free optimization

14.30 – 15.00 : M. Garcia : *Neuronal networks for derivative free optimization*

15.00 – 15.30 : M. Sosonkina : Performance Studies of a Parallel Global Search on System X

 

Session on sparse solver

15.30 – 16.00 : T. Slavova : *Efficient triangular solution in sparse out-of-core solvers*


Adobe_PDF_file_icon_24x24 List of participants

NEWS

Young PhD day (JDD) – Thursday 8 October 2020

Brigitte Yzel |  24 September 2020

  Ph.D. Students' Day (JDD 2020) Thursday 8 October 2020 Virtual event open to our partners and associates   Planning   The 2020 edition of the PhD Students' Day will take place on October 8th, 2020. This year, this day of the PhD students of the Cerfacs, will take place mainly in visio in order to respect all the health safety measures relating to Covid-19. This day will be held in a virtual way through oral presentations filmed and broadcast on a private link, which we will distribute to all participants. Everyone will thus be able to discover at a distance the subjects developed by the doctoral students. At the same time, the "Posters session" will be opened on the morning of the JDD, by sending all the posters in pdf format by e-mail to all the participants for consultation, and by opening the "50-minute question session" on a channel whose links we will send you. This will allow participants to ask questions about the posters of the session. Finally, we have included in this 5th edition a great novelty, by allowing several students to present their subject in the popularised form of "My thesis in 3 minutes", guided by Matthieu Pouget, actor and theatre director. This day will end with the vote for the "Best poster" and the "Best presentation of My thesis in 3 minutes". Participation in the event is free of charge. However, for logistical reasons, registration, only by invitation, is mandatory.   Organising Committee:  Scientific committee  Nicolas Venkovic Victor Xing Inscription &  information Jade Schweiger Brigitte Yzel  Read more


Sparse Days 2020, Cerfacs

Brigitte Yzel |  24 September 2020

Sparse Days Meeting 2020  23 - 24 November 2020 Virtual Workshop   The annual Sparse Days meeting will be held this year as a virtual event, on 23 - 24 November 2020. Sadly, because of the pandemic, we will not be able to have a normal face-to-face Sparse Days at Cerfacs this year. We will be holding an online version from 3pm to 7pm on 23 and 24 November. The timing is chosen to accommodate participants from North America since, at normal Sparse Days, we have a good representation from there. A registration form  is available on this conference website where you can also submit a title and an abstract for any proposed talk. We will probably be using the Webex system and will post details about how to connect to all people who register.Read more

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