Eric de Sturler - UIUC CS Homepage
MAIN INFORMATION
Affiliations
Contact Information
Secretary

A teaching statement

NEWS
Recent publications

PROJECTS & CENTERS

POSTDOCS, STUDENTS & RAs

TEACHING

PUBLICATIONS

INVITATIONS

LINKS

PICTURES
The Thomas M. Siebel Center for Computer Science

Eric de Sturler

Associate Professor of Mathematics, Virginia Tech

Adjunct Associate Professor of Computer Science, University of Illinois at Urbana-Champaign

Affiliate faculty of the Computational Science and Engineering Program, the Institute for Genomic Biology, the Materials Computation Center, and the Center for Simulation of Advanced Rockets.

 

Editor SIAM Journal on Numerical Analysis,

Editor Applied Numerical Mathematics,
Program Director of the SIAM Activity Group on Supercomputing (2003-2006),

Co-Chair of the Third SIAM Conference on Computational Science & Engineering (2005),

Editor International Journal on Computational Science and Engineering,

Member of the Computational Review Panel of the National Energy Research Scientific Computing Center (NERSC - Lawrence Berkeley National Laboratory).

 

Department of Computer Science

4314 Thomas M. Siebel Center for Computer Science, MC-258 
University of Illinois at Urbana-Champaign 
201 N. Goodwin,

Urbana, IL 61801-2302, USA

phone: +1 (217) 244 6720 
fax: +1 (217) 265 6738
email: sturler_at_cs_uiuc_edu

 
Secretary:

Trisha Benson

4322 Thomas M. Siebel Center for Computer Science, MC-258

phone: +1 (217) 244-0095

email: tdbenson_at_cs_uiuc_edu        

 

The Rime of the Ancient Professor

 

O teach me, teach me, learned man!

The student did implore.

Tell me, quoth she, of PDE

And ODE much more.

 

Since then, each week the selfsame hour,

That agony returns:

And till I have my lecture told,

This heart within me burns.

 

Forthwith this frame of mine was wrenched

With a woeful agony,

Which forced me to begin my class;

And then it left me free.

 

Three times a week I go to class;

I have strange power of speech;

That moment that her face I see,

I know the student must hear me:

To her my class I teach.

 

(EdS, after Coleridge's The Rime of the Ancient Mariner)

 

News

I have recently moved to the Department of Mathematics at Virginia Tech (see above). The special volume on "Saddle Point Problems: Numerical Solution and Applications" in the Electronic Transactions on Numerical Analysis (ETNA) is now finished (edited jointly with Michele Benzi and Rich Lehoucq). 

Recent publications (send email if not yet available online as technical report)

  • Chris Siefert and Eric de Sturler, Probing Methods for Saddle-Point Problems, accepted for publication in Electronic Transactions in Numerical Analysis (ETNA), Volume 22, 2006, Special Volume on "Saddle Point Problems: Numerical Solution and Applications", an older version is available as Tech. Report UIUCDCS-R-2005-2540 and UILU-ENG-2005-1744, March 2005,
  • Misha Kilmer and Eric de Sturler, Recycling Subspace Information for Diffuse Optical Tomography, © 2006 SIAM, SIAM Journal on Scientific Computing 27(6), pp. 2140-2166, 2006, an older version is available as Technical Report UIUCDCS-R-2004-2447, June 2004,
  • Saddle Point Problems: Numerical Solution and Applications, Special Volume of Electronic Transactions on Numerical Analysis (ETNA), Volume 22, 2006, Michele Benzi, Richard B. Lehoucq, and Eric de Sturler (editors).
  • Michael L. Parks, Eric de Sturler, Greg Mackey, Duane D. Johnson, and Spandan Maiti, Recycling Krylov Subspaces for Sequences of Linear Systems, accepted for publication in SIAM Journal on Scientific Computing, February 2006,
  • Shun Wang, Eric de Sturler, and Glaucio H. Paulino, Large-Scale Topology Optimization using Preconditioned Krylov Subspace Methods with Recycling, International Journal for Numerical Methods in Engineering (submitted), available as Technical Report UIUCDCS-R-2006-2678 and UILU-ENG-2006-1705.
  • Chris Siefert and Eric de Sturler, Preconditioners for Generalized Saddle-Point Problems, accepted for publication in SIAM Journal on Numerical Analysis, December 2005,
  • Xin-Guang Zhu, John Whitmarsh, Nahil Sobh, Eric de Sturler, Stephen P. Long, A Complete Dynamic Model of C3 Metabolism and its Application in Assessing Control of Photosynthetic Rate by the Enzymes Photorespiratory Metabolism, submitted to Plant Physiology, September 2005,
  • Xin-Guang Zhu, Govindjee, Neil Baker, Eric de Sturler, Donald R. Ort, Stephen P. Long, Chlorophyll a fluorescence induction kinetics in leaves predicted from a model describing each discrete step of excitation energy and electron transfer associated with Photosystem II, Planta 223(1), pages 114-133, 2005,
  • Eric de Sturler and Jörg Liesen, Block-diagonal and Constraint Preconditioners for Nonsymmetric Indefinite Linear Systems. Part I: Theory, © 2006 SIAM, SIAM Journal on Scientific Computing 26(5), pp. 1598-1619, 2005.

Projects and Centers

Postdocs, Students, and RAs

  • Xinguang Zhu (postdoc)
  • Mike Parks (PhD 2004, now with Sandia National Laboratories)
  • Chris Siefert (PhD 2006, now with Sandia National Laboratories)
  • Zhen Cheng (MS 2005)
  • Shun Wang
  • Ben Kaap (undergraduate, BS'04)
  • Naomi Caldwell (graduate, MCS'04)
  • Greg Mackey (graduate, MS'03, now with Sandia National Laboratories)
  • Hormozd Gahvari (undergraduate, now in Berkeley)
  • Mark Hoemmen (undergraduate, now in Berkeley)
  • Jie Zheng (graduate, MCS'01)

Teaching and Short Courses Overview

Details (including online lecture notes and other material) (to be done)

Regular Classes

Short Courses

  • Summerschool on Computational Materials Science, Introduction to Computational Nanotechnology, Materials Computation Center, University of Illinois at Urbana-Champaign, June 7 - 18, 2004,

    • Lecture notes

  • Summerschool on Computational Materials Science, Tools for Multiple Length and Time Scales, Materials Computation Center, University of Illinois at Urbana-Champaign, May 29 – June 7, 2001.

    • Lecture notes on MCC website (4 lectures on Krylov subspace methods for linear systems and eigenvalue solvers, and multigrid methods; and lab exercises with additional explanations)

  • Implementation Aspects and Parallelism in Krylov Methods; Katholieke Universiteit Leuven (KUL), Leuven, Belgium, 22-24 April, 1998; KUL-UCL Graduate Courses in Numerical Analysis / Seminar Series: Iterative Methods for Large Scale Systems and Eigenvalue Problems, organized by Paul Van Dooren and Stefan Vandewalle

    • Lecture notes (efficient parallel implementations and messaging passing and data-parallel implementations)

  • Iterative Linear Solvers and Preconditioners (with Martin Gutknecht and Michele Benzi); ETH Zurich, October 16-17, 1997;

  • University of Basel, Institut fuer Informatik, May 12-14, 1997, High Performance Fortran Course, Basic issues in (data) parallel programming; High Performance Fortran: an overview; Fortran 90; Data mapping; Data Parallelism; System and data mapping inquiry functions; Compiler and tools; Programming examples and performance studies.

    • Lecture notes (at some point)

Publications

Full List of Publications

Selected Journal and Book Publications (send email if not available online)

  1. Saddle Point Problems: Numerical Solution and Applications, Special Volume of Electronic Transactions on Numerical Analysis (ETNA), Volume 22, 2006, Michele Benzi, Richard B. Lehoucq, and Eric de Sturler (editors).

  2. Chris Siefert and Eric de Sturler, Probing Methods for Saddle-Point Problems, accepted for publication in Electronic Transactions in Numerical Analysis (ETNA), Volume 22, 2006, Special Volume on "Saddle Point Problems: Numerical Solution and Applications",

  3. Misha Kilmer and Eric de Sturler, Recycling Subspace Information for Diffuse Optical Tomography, © 2006 SIAM, SIAM Journal on Scientific Computing 27(6), pp. 2140-2166, 2006,

  4. Mike Parks, Eric de Sturler, Greg Mackey, Duane D. Johnson, and Spandan Maiti, Recycling Krylov Subspaces for Sequences of Linear Systems, accepted for publication in SIAM Journal on Scientific Computing, February 2006,

  5. Shun Wang, Eric de Sturler, and Glaucio H. Paulino, Large-Scale Topology Optimization using Preconditioned Krylov Subspace Methods with Recycling, International Journal for Numerical Methods in Engineering (submitted), available as Technical Report UIUCDCS-R-2006-2678 and UILU-ENG-2006-1705.

  6. Chris Siefert and Eric de Sturler, Preconditioners for Generalized Saddle-Point Problems, accepted for publication in SIAM Journal on Numerical Analysis, December 2005,

  7. Xin-Guang Zhu, John Whitmarsh, Nahil Sobh, Eric de Sturler, Stephen P. Long, A Complete Dynamic Model of C3 Metabolism and its Application in Assessing Control of Photosynthetic Rate by the Enzymes Photorespiratory Metabolism, submitted to Plant Physiology, September 2005,

  8. Xin-Guang Zhu, Govindjee, Neil Baker, Eric de Sturler, Donald R. Ort, Stephen P. Long, Chlorophyll a fluorescence induction kinetics in leaves predicted from a model describing each discrete step of excitation energy and electron transfer associated with Photosystem II, Planta 223(1), pages 114-133, 2005,

  9. Eric de Sturler and Jörg Liesen, Block-diagonal and Constraint Preconditioners for Nonsymmetric Indefinite Linear Systems. Part I: Theory, © 2005 SIAM, SIAM Journal on Scientific Computing 26(5), pp. 1598-1619, 2005,

  10. Eric de Sturler, Improving the Convergence of the Jacobi-Davidson Algorithm, (submitted SIAM Journal on Scientific Computing, being revised).

  11. A. Sheffer and E. de Sturler, Smoothing an Overlay Grid to Minimize Linear Distortion in Texture Mapping, ACM Transaction on Graphics 21(4), pp. 874-890, 2002 (final draft with color graphics).

  12. A. Sheffer and E. de Sturler, Parameterization of Faceted Surfaces for Meshing Using Angle Based Flattening, Engineering with Computers 17(3) (2001), pp. 326-337. (available from Springer) Special issue containing 10 selected (and updated) papers from the 9th International Meshing Round Table Conference 2000.

  13. J. Liesen, E. de Sturler, A. Sheffer, Y. Aydin, C. Siefert, Preconditioners for Indefinite Linear Systems Arising in Surface Parameterization, Proceedings of the 10th International Meshing Round Table,  Newport Beach, CA, October 7-10, 2001, Sandia National Laboratories (also available from http://www.andrew.cmu.edu/user/sowen.imr10.html).

  14. E. de Sturler, J. Hoeflinger, L. Kale, and M. Bhandarkar, A New Approach to Software Integration Frameworks for Multi-Physics Simulation codes, in The Architecture of Scientific Software (Proceedings of Working Conference on Software Architectures for Scientific Computing Applications, IFIP Working Group 2.5), R.F. Boisvert, P.T.P. Tang, eds., Kluwer Academic Publishers, Boston, 2001, ISBN 0-7923-7339-1.

  15. M. Bhandarkar, L.V. Kale, E. de Sturler, J. Hoeflinger, Adaptive Load Balancing for MPI Programs, Lecture Notes in Computer Science 2074, V.N. Alexandrov e.a. (Eds.): Proceedings of the International Conference in Computational Science, May 28-30, 2001, San Francisco, CA, pp. 108-117, Springer-Verlag, 2001.

  16. A. Sheffer and E. de Sturler, Surface Parameterization for Meshing by Triangulation Flattening, Proceedings of the 9th International Meshing Round Table Conference 2000, New Orleans, October 2-5, 2000, pp. 161-172,  Sandia National Laboratories, (also available from http://www.andrew.cmu.edu/user/sowen.imr9.html).

  17. E. de Sturler, Truncation Strategies for Optimal Krylov Subspace Methods, SIAM Journal on Numerical Analysis Vol. 36 (1999), pp. 864-889. Awarded the second prize at the Leslie Fox Prize Meeting 1997.

  18. E. de Sturler. Variations on the Jacobi-Davidson Theme. In David Kincaid and Anne Elster, editors: Iterative Methods in Scientific Computation IV: Proceedings of the Fourth  IMACS International Symposium on Iterative Methods in Scientific Computation, honoring the 75th birthday of David M. Young, Austin, Texas, October 18-20, 1998, IMACS series in Computational and Applied Mathematics, volume  5, IMACS 1999, pp. 313-323.

  19. E. de Sturler. BiCG Explained. Householder Symposum XIV: Proceedings of the Householder International Symposium in Numerical Algebra, Chateau Whistler, Whistler, BC, Canada, June 13-19, 1999.

  20. E. de Sturler and D. Loher, Parallel Iterative Solvers for Irregular Sparse Matrices in High Performance Fortran, Journal of Future Generation Computer Systems Vol. 13 (1998), pp. 315-325. Special issue containing updated versions of the 15 best papers selected out of 130 papers accepted for HPCN’97.

  21. E. de Sturler and V. Strumpen, Scientific Programming with High Performance Fortran: A Case Study Using the xHPF Compiler, Scientific Programming Vol. 6 (1997), pp. 127-152. Special issue: High Performance Fortran Comes of Age.

  22. E. de Sturler and D. Loher. Implementing Iterative Solvers for Irregular Sparse Matrix Problems in High Performance Fortran. In C.D. Polychronopoulos, K. Joe, K. Araki, M. Amamiya, editors: High Performance Computing, International Symposium, ISHPC'97, Fukuoka, Japan, November 4 - 6, 1997, Lecture Notes in Computer Science 1336, Springer-Verlag, Berlin, Heidelberg, Germany, 1997.

  23. E. de Sturler, Nested Krylov Methods based on GCR, Journal of Computational and Applied Mathematics Vol. 67 (1996), pp. 15-41.

  24. E. de Sturler, A Performance Model for Krylov Subspace Methods on  Mesh-based Parallel Computers, Parallel Computing Vol. 22 (1996), pp. 57-74.

  25. E. de Sturler. Inner-outer Methods with Deflation for Linear Systems with Multiple Right-Hand Sides. In Householder Symposium XIII, Proceedings of the Householder Symposium on Numerical Algebra, pp. 193-196. June 17 - 26, 1996, Pontresina, Switzerland.

  26. E. de Sturler and H. A. van der Vorst, Reducing the Effect of Global Communication in GMRES(m) and CG on Parallel Distributed Memory Computers, Applied Numerical Mathematics (IMACS), Vol. 18 (1995), pp. 441-459.

  27. F. Nataf, F. Rogier, and E. de Sturler. Domain Decomposition Methods for Fluid Dynamics. In A. Sequeira, editor: Navier-Stokes Equations and Related Nonlinear Problems, pp. 367-376, New York, 1995. Plenum Press.

  28. E. de Sturler, Incomplete Block LU Preconditioners on Slightly Overlapping Subdomains for a Massively Parallel Computer, Applied Numerical Mathematics (IMACS), Vol. 19 (1995), pp. 129-146.

  29. Eric de Sturler. IBLU Preconditioners for Massively Parallel Computers. In D. E. Keyes & J. Xu, editors: Domain Decomposition Methods in Science and Engineering, Proceedings of the Seventh International Conference on Domain Decomposition, October 27-30, 1993, The Pennsylvania State University, pp. 395-400, American Mathematical Society, Providence, USA, 1994.

  30. C. Clémençon, K. M. Decker, A. Endo, J. Fritscher, G. Jost, T. Maruyama, N. Masuda, A. Müller, R. Rühl, W. Sawyer, E. de Sturler, B. J. N. Wylie, and F. Zimmermann, Architecture and Programmability of the NEC Cenju-3, SPEEDUP, Vol. 8(2) (1994), pp. 15-22.

  31. E. de Sturler. Iterative Methods on Distributed Memory Computers, Ph.D. thesis, Delft University of Technology, Delft, The Netherlands, October 1994 (ISBN 90-9007579-8).

  32. E. de Sturler and H. A. van der Vorst. Communication Cost Reduction for Krylov Methods on Parallel Computers. In W. Gentzsch and U. Harms, editors: High-Performance Computing and Networking, Lecture Notes in Computer Science 797, pages 190-195, Springer-Verlag, Berlin, Heidelberg, Germany, 1994.

  33. E. de Sturler and D. R. Fokkema. Nested Krylov Methods and Preserving the Orthogonality. In N. Duane Melson, T. A. Manteuffel, and S. F. McCormick, editors, Sixth Copper Mountain Conference on Multigrid Methods, NASA Conference Publication 3224, Part 1, pages 111-125, NASA Langley Research Center, Hampton, VA, USA, 1993.

  34. E. de Sturler. A Parallel Variant of GMRES(m). In J.J.H. Miller and R.Vichnevetsky, editors, Proceedings of  the 13th IMACS World Congress on Computation and Applied Mathematics, pp. 682-683, Dublin, Ireland, 1991. Criterion Press.

  35. G. H. Schmidt and E. de Sturler. Multigrid for porous medium flow on locally refined three dimensional grids. In W. Hackbusch and U. Trottenberg, editors, Multigrid Methods: Special Topics and Applications II, proceedings  of the 3rd European Conference on Multigrid Methods, Bonn, Germany, October 1-4, 1990, GMD-Studien Nr. 189, pages 309-318, Gesellschaft fòr Mathematik und Datenverarbeitung, Sankt Augustin, Germany, 1991.

Invitations and Invited/Plenary Presentations

Full List of Invitations and Invited/Plenary Presentations

Selected Invitations and Invited Presentations (several available online)

  1. Fast Solution of Long Sequences of Linear Systems, in Minisymposium 'Iterative Solvers in Computational Mechanics' (Stephen Vavasis and Erik Boman), 7th World Congress on Computational Mechanics 2006, July 16-22, 2006, Los Angeles, CA,

  2. Parallel Multilevel Preconditioners for Simulations on Adaptively Refined Meshes, in Minisymposium 'Scalable Preconditioning with Incomplete Factors and Sparse Approximate Inverses' (Padma Raghavan and Keita Teranishi), SIAM Conference on Parallel Processing for Scientific Computing 2006, February 22-24, 2006, San Francisco, CA,

  3. Department of Computer Science, College of William and Mary, October 28, 2005, Fast Solvers for Long Sequences of Linear Systems and their Analysis,

  4. Computer Science Research Institute, summer faculty, Sandia National Laboratories, Albuquerque, June - August, 2005,

  5. Recycling Krylov Subspaces for Sequences of Linear Systems: Convergence Analysis, 45 minute plenary lecture at the Householder XVI Symposium on Numerical Linear Algebra, Seven Springs Mountain Resort, Champion, PA, May 23-27, 2005.

  6. Scientific Computing and Imaging Institute, University of Utah, Salt Lake City, Utah, May 9-11, 2005, Fast Solvers for Long Sequences of Linear Systems,

  7. Parallel Multilevel Preconditioners for Simulations on Adaptively Refined Meshes, 5th Symposium of the Los Alamos Computer Science Institute (LACSI), AMR Workshop, Santa Fe, New Mexico, October 12-14, 2004.

  8. Optimization Technology Center and Northwestern University (broadcast through Access Grid), Evanston, Illinois, October 6, 2004, Probing for Schur Complements and Preconditioning Generalized Saddle-Point Problems,

  9. Department of Mathematics and Computer Science, Emory University, Atlanta, Georgia, March 17-19, 2004, Iterative Solution of a Sequence of Linear Systems,

  10. SCCM Program, Stanford University, February 27, 2004, Iterative Solution of a Sequence of Linear Systems,

  11. Department of Computer Science, University of Maryland at College Park, December 9-11, 2004, Preconditioners for Generalized Saddle-Point Problems,

  12. Preconditioners for Generalized Saddle-Point Problems, Solution Methods for Saddle-Point Systems in Computational Mechanics, workshop organized by Sandia National Labs and the SCCM Program Stanford, Santa Fe, New Mexico, December 3-6, 2003,

  13. Updating, Truncating, and Reusing Krylov Spaces, Dagstuhl Seminar on Theoretical and Computational Aspects of Matrix Algorithms, Schloss Dagstuhl, Wadern, Germany, October 11-18, 2003.

  14. Department of Mathematics, Tufts University, September 17-21, 2003, Iterative Solution of a Sequence of Linear Systems,

  15. Parallel Multi-Physics Integration Frameworks for Virtual Rocket Science, in Minisymposium ‘Supporting Infrastructures for Computational Mechanics Applications’ (Carter Edwards), 7th US National Congress on Computational Mechanics 2003, July 27-30, 2003, Albuquerque, NM.

  16. Preconditioning Saddle-point Problems using Cheap Approximations to the Schur Complement, in Minisymposium Analysis and Algorithms for Ill-conditioned Saddle-point Systems (Kim-Chuan Toh), ICIAM 2003, July 7-11, 2003, Sydney, Australia.

  17. Krylov Methods for Lattice QCD, Third International Workshop on Numerical Analysis and Lattice QCD, University of Edinburgh & UK National e-Science Centre, e-Science, Institute, Edinburgh, Scotland, June 30 – July 4, 2003 (canceled due to accident of my wife),

  18. Inner-outer Iteration for a Sequence of Linear Systems, Sparse Matrices and Grid Computing, St Girons Deux, June 10-13, 2003, St. Girons, France (canceled due to accident of my wife),

  19. Preconditioning Saddle Point Problems using Cheap Approximations to the Schur Complement, ETNA: Following the Flows of Numerical Analysis, Kent, OH, May 29-31, 2003.

  20. Ecole Polytechnique de Montreal, Dept. of Computer Science,  Montreal, Canada, November 19-23, 2002, Algorithmic and Accuracy Issues in Surface Parameterization,

  21. Centre de Recherche en Calcul Applique (CERCA), Montreal November 19-23, 2002, Fast Solution of Symmetric and Nonsymmetric Indefinite Problems, 

  22. Fast Solution Methods and Preconditioners for Symmetric and Nonsymmetric Indefinite Systems, Plenary presentation at the 15th Householder Symposium in Numerical Linear Algebra (June 2002).

  23. Norm-wise and Iteration-wise Bounds on the Convergence of Krylov Subspace Methods relative to GMRES, in Minisymposium on Fundamentals of Krylov Subspace Methods (Anne Greenbaum and Nick Trefethen), Copper Mountain Conference on Iterative Methods, Copper Mountain, Colorado, March 24-29, 2002.

  24. Accuracy and Algorithmic Issues in Surface Parameterization, Fifth AFA Conference on “Curves and Surfaces”, June 27-July 3, 2002, St. Malo, Bretagne, France, in minisymposium “Parameterization and Surface Reconstruction” (Michael Floater).

  25. University of Leiden (Netherlands), Department of Mathematics, January 7, 2002, Fast Solution Methods and Preconditioners for Symmetric and Nonsymmetric Indefinite Systems,

  26. University of Utrecht (Netherlands), Department of Mathematics, December 14, 2001 - January 12, 2002 (1 month), Fast Solution Methods and Preconditioners for Symmetric and Nonsymmetric Indefinite Systems,

  27. Extending and truncating the search space in the Jacobi-Davidson Algorithm, in Minisymposium on Invariant Subspaces (H.A. van der Vorst), SIAM Conference on Numerical Linear Algebra, Raleigh, North-Carolina, USA, October 23-26, 2000, .

  28. Analysis of Newton and Newton-Krylov Methods for Nonlinear Problems with Ill-conditioned Jacobians, Workshop on Solution Methods for Large-Scale Nonlinear Problems, Lawrence Livermore National Laboratory, CASC/Institute for Terascale Simulation, Livermore, CA, July 26-28, 2000.

  29. Lawrence Livermore National Laboratory/CASC, Livermore, CA, March 12-19, 2000, Programming Environments for Multi-Application Simulation.

  30. Analyzing Krylov Subspace Methods by their Projections, in Minisymposium on the Analysis of Krylov Subspace Methods (Anne Greenbaum), 2000 Joint Mathematics Meetings (AMS/MAA/SIAM), Washington DC, January 19-22, 2000 .

  31. Ecole Polytechniqe / Centre de Mathematiques Appliquées, Paris (Palaiseau), France, 3-5 January, 2000, Three-dimensional, Integrated, Simulation of Solid Propellant Rockets (overview).

  32. Universite Paris VI Pierre et Marie Curie / Laboratoire d’Analyse Numerique, Paris, France, January 3, 2000, Three-dimensional, Integrated, Simulation of Solid Propellant Rockets - coupling applications on separate grids.

  33. Argonne National Laboratory / Mathematics and Computer Science Division, Chicago, Illinois, USA, December 9, 1999, A Programming Environment for Multi-Application Simulations.

  34. Swiss Federal Institute of Technology (ETH Zurich) / Department of Civil and Environmental Engineering (VAW), Zurich, Switzerland, July 15-August 1, 1999, Fellow of the European Research Consortium on Flow, Turbulence, and Combustion (ERCOFTAC), Integrated, Threedimensional, Simulation of Solid Propellant Rockets.

  35. BiCG Explained, Householder Symposium XIV, Chateau Whistler, Whistler, BC, Canada, June 13-19, 1999.

  36. The Convergence of BiCG, A Mathematical Journey through Analysis, Matrix Theory, and Scientific Computing: A Conference in Honor Richard Varga's 70th Birthday, Kent State University, Kent, OH, USA, March 25-27, 1999.

  37. Los Alamos National Laboratory, Los Alamos, NM, USA, March 17-18, 1999, The Convergence of BiCG.

  38. Sandia National Laboratories, Albuquerque, NM, USA, March 15-16,19, 1999,

    1. Truncation of Optimal Krylov Subspace Methods,

    2. The Convergence of BiCG

  39. Technische Universität Bergakademie Freiberg / Institut für Angewandte Mathematik II, Freiberg, Germany, 11-15 November, 1998, The Convergence of BiCG.

  40. College of William and Mary / Department of Computer Science, Williamsburg, Virginia, USA, 21-27 October, 1998, Truncation Strategies for Optimal Krylov Subspace Methods.

  41. Variations on the Jacobi-Davidson Theme, plenary lecture, Fourth  IMACS International Symposium on Iterative Methods in Scientific Computation, honoring the 75th birthday of David M. Young, Austin, Texas, USA, October 18-20, 1998.

  42. Panel member in the Forum Discussion at the High Performance Fortran User Group Conference 1998 (HUG’98), Porto, Portugal, 25-26 June, 1998, The Future of High Performance Fortran.....

  43. Katholieke Universiteit Leuven (KUL), Leuven, Belgium, 22-24 April, 1998, Implementation Aspects and Parallelism in Krylov Methods. (in KUL-UCL Graduate Courses in Numerical Analysis / Seminar Series: Iterative Methods for Large Scale Systems and Eigenvalue Problems, organized by Paul Van Dooren and Stefan Vandewalle)

    1. Efficient Parallel Implementations of Krylov Subspace Methods.

    2. Message Passing and Data Parallel Implementation Strategies.

    3. Truncation Strategies for Optimal Krylov Subspace Methods.

  44. Stanford University / SCCM / Dept. Computer Science, USA, 18-21 February, 1998, Parallel Iterative Solvers for Irregular Sparse Matrices in High Performance Fortran.

  45. Ecole Polytechniqe / Centre de Mathematiques Appliquées, Paris (Palaiseau), France, 2-6 February, 1998.

    1. The Convergence of BiCG.

    2. Parallel Iterative Solvers for Irregular Sparse Matrices in High Performance Fortran.

  46. Australian National University/Computer Sciences Laboratory, Canberra, Australia, 10-16 November, 1997.

    1. Truncation Strategies for Optimal Krylov Subspace Methods.

    2. Parallel Iterative Solvers for Irregular Sparse Matrices in High Performance Fortran.

  47. Stanford University / SCCM, USA, June 30 - August 12, 1997, Truncation Strategies for Optimal Krylov Subspace Methods.

  48. A Robust and Efficient Truncated GMRES, Third IMACS International Symposium on Iterative Methods in  Scientific Computation, Jackson Hole, Wyoming, USA, July 9-12, 1997. (in minisymposium)

  49. Truncation Strategies for Optimal Krylov Subspace Methods, Leslie Fox Prize Meeting 1997, University of Dundee, Scotland, June 23, 1997. Awarded 2nd Prize.

  50. M.I.T./Lab. for Computer Science, Cambridge MA, USA, 14-18 October, 1996, Parallel Solution of Irregular Sparse Problems using High Performance Fortran. (in Supercomputing Technologies Seminar)

  51. Inner-Outer Methods with Deflation for Linear Systems with Multiple Right Hand Sides, Householder Symposium XIII, 17-21 June, 1996, Pontresina, Switzerland.

  52. Stanford University/SCCM, USA, 15-19 April, 1996, Inner-Outer Methods with Deflation for Linear Systems with Multiple Right Hand Sides.

  53. Inner-Outer Methods with Deflation for Multiple Right Hand Sides, plenary lecture, Workshop on Large Sparse Matrix Computations and Lattice Quantum Chromodynamics, University of Kentucky, Lexington, USA, August 31-September 2, 1995.

Selected Conference Presentations, Sessions, and other Lectures (several available online)

(to do)