### Today's Editor:

- Cleve Moler
- The MathWorks, Inc.
- moler@mathworks.com

- LSQR, Paige and Saunders
- Computing Eigenvalues of Large, Complex Matrices
- Upstate NA Day
- General Purpose Parallel Computing
- Northern England Universities Numerical Analysis Colloquium
- Domain-Based Parallelism and Problem Decomposition
- Position at Univ. California, Santa Barbara
- Position at Simon Fraser University
- Contents: IMA Journal of Numerical Analysis

-------------------------------------------------------

From: manolo@titan (Manuel Galan Moreno)

Date: Mon, 22 Nov 93 12:43:13 GMT

**Subject: LSQR, Paige and Saunders**

I am interested in receiving updated documentation & references about

Paige & Saunders LSQR method for linear system resolution.

Thanks a lot.

------------------------------

From: P.E. Van Camp <vancamp%banruc60.bitnet@cc1.kuleuven.ac.be>

Date: Wed, 24 Nov 93 12:46:42 +0100

**Subject: Computing Eigenvalues of Large, Complex Matrices**

I am looking for software to find some of the eigenvalues and -vectors

(the lowest 10-30) of a large (dimension 2000-5000 or more) complex

Hermitian matrix. The matrix is not sparse (altough it contains a number

of zero entries) and usually has some two- or threefold degenerate

eigenvalues.

I checked Netlib etc. and could'nt find anything useful.

Many thanks,

P.E. Van Camp

University of Antwerp - RUCA

Department of Physics

Research Group TSM

roenenborgerlaan 171

B-2020 Antwerpen, Belgium

Tel. +32/3/2180316

Fax +32/3/2180217

E-mail: vancamp@banruc60.bitnet

------------------------------

From: Nick Trefethen <lnt@cs.cornell.edu>

Date: Sat, 27 Nov 93 11:57:35 -0500

**Subject: Upstate NA Day**

Final schedule

UPSTATE NUMERICAL ANALYSIS DAY

456 Engineering and Theory Center

Cornell University

Ithaca, NY

Thursday, December 9, 1993

On Thursday, December 9, the Cornell Computer Science Department and Cornell

Theory Center will host an informal get-together for numerical analysts.

Graduate students are especially encouraged to attend. For further information

contact Nick Trefethen (LNT@cs.cornell.edu, 607-255-4222) or Cindy Robinson

(cindy@cs.cornell.edu, 607-255-0985).

9:30 DIRK LAURIE, Potchefstroom University for C.H.E., South Africa

Imperfect periodizing of functions for numerical integration --

must all derivatives vanish?

10:00 CHARLIE VAN LOAN, Department of Computer Science, Cornell University

An eigenvalue problem from adaptive optics

11:00 TOBY DRISCOLL, Center for Applied Mathematics, Cornell University

Interactive Schwarz-Christoffel mapping in Matlab, and an

application in iterative linear algebra

11:30 SAUL TEUKOLSKY, Department of Physics, Cornell University

Numerical Recipes: physicists versus numerical analysts?

2:00 NILOUFER MACKEY, Department of Computer Science, SUNY Buffalo

Convergence of the quaternion-Jacobi method

2:30 STEVE VAVASIS, Department of Computer Science, Cornell University

An accelerated interior point method based on layered least-squares

3:00 THOMAS COLEMAN, Department of Computer Science, Cornell University

Linearly constrained optimization and projected preconditioned

conjugate gradients

4:00 ANNE TREFETHEN, Cornell Theory Center, Cornell University

Parallel Matlab and pipe Poiseuille pseudospectra

4:30 ARIEH ISERLES, University of Cambridge, England

Qualitative analysis of discretized ODEs

------------------------------

From: Ashok Gupta <gupta@prl.philips.co.uk>

Date: Mon, 22 Nov 93 08:04:01 +0000 (UTC)

**Subject: General Purpose Parallel Computing**

The British Computer Society

Parallel Processing Specialist Group

(BCS PPSG)

General Purpose Parallel Computing

A One Day Open Meeting with Invited and Contributed Papers

22 December 1993, University of Westminster, London, UK

Invited speakers :

Les Valiant, Harvard University

Bill McColl, PRG, University of Oxford, UK

David May, Inmos, UK

A key factor for the growth of parallel computing is the availability of port-

able software. To be portable, software must be written to a model of machine

performance with universal applicability. Software providers must be able to

provide programs whose performance will scale with machine and application size

according to agreed principles. This environment presupposes a model of paral-

lel performance, and one which will perform well for irregular as well as regu-

lar patterns of interaction. Adoption of a common model by machine architects,

algorithm & language designers and programmers is a precondition for general

purpose parallel computing.

Valiant's Bulk Synchronous Parallel (BSP) model provides a bridge between appli-

cation, language design and architecture for parallel computers. BSP is of the

same nature for parallel computing as the Von Neumann model is for sequential

computing. It forms the focus of a project for scalable performance parallel

architectures supporting architecture independent software. The model and its

implications for hardware and software design will be described in invited and

contributed talks.

The PPSG, founded in 1986, exists to foster development of parallel architec-

tures, languages and applications & to disseminate information on parallel pro-

cessing. Membership is completely open; you do not have to be a member of the

British Computer Society. For further information about the group contact ei-

ther of the following :

Chair : Mr. A. Gupta Membership Secretary: Dr. N. Tucker

Philips Research Labs, Crossoak Lane, Paradis Consultants, East Berriow,

Redhill, Surrey, RH1 5HA, UK North Hill, Nr. Launceston,

gupta@prl.philips.co.uk Cornwall, PL15 7NL, UK

------------------------------

From: James F Blowey <J.F.Blowey@durham.ac.uk>

Date: Mon, 22 Nov 1993 14:28:26 +0000 (GMT)

**Subject: Northern England Universities Numerical Analysis Colloquium **

The Northern England Universities Numerical Analysis Colloquium will

take place in Van Mildert College, University of Durham on Thursday

January 6 1994.

The invited speakers are:

Arieh Iserles (Cambridge) `Numerical analysis of delay differential

equations with variable delays'

and

Alistair Watson (Dundee) `Some robust methods for parameter estimation'

There will be time for a few contributed talks. Further information

may be obtained from j.f.blowey@durham.ac.uk

------------------------------

From: Yousef Saad <saad@cs.umn.edu>

Date: Tue, 23 Nov 1993 08:42:23 -0600 (CST)

**Subject: Domain-Based Parallelism and Problem Decomposition**

WORKSHOP on DOMAIN-BASED PARALLELISM AND PROBLEM DECOMPOSITION

METHODS IN COMPUTATIONAL SCIENCE AND ENGINEERING

On April 25 and 26, 1994, the Minnesota Supercomputer Institute will

host a Workshop on Domain-Based Parallelism and Problem Decomposition

Methods in Computational Science and Engineering, organized in

cooperation with the SIAM Activity Group on Supercomputing and the

Army High Performance Computing Research Center. The workshop will

bring together researchers from many scientific and engineering

disciplines who exploit `problem decomposition techniques' in various

continuous or discrete senses to develop parallel algorithms. The

invited speakers will take a broad perspective suitable for an

interdisciplinary audience of engineers, physical scientists, and

applied mathematicians. There will be no contributed papers.

However, a poster session will be organized for those participants who

wish to present their work. Attendence to the workshop is limited, so

registration is required. Early registration is recommended.

For information or to obtain a registration form, contact one of the

organizers, David Keyes (ICASE) or Youcef Saad (U. of Minnesota, CS)

or Donald Truhlar (U. of Minnesota, Chemistry), or contact the

Symposium Administrator, Michael Olesen, Supercomputer Institute, 1200

Washington Avenue South, Minneapolis, MN 55415, phone):(612) 624-1356,

fax: (612) 624-8861, e-mail: olesen@msi.umn.edu.

Invited speakers & lecture topics:

ZLATKO BACIC (New York University): ``Bound States of Strongly

Coupled Multidimensional Molecular Hamiltonians by the Discrete

Variable Representation Approach''.

PETTER BJORSTAD (Institute for Informatics in Bergen, Norway):

``Domain Decomposition and Parallel Computing with Applications to

Oil Reservoir Simulation''.

XIAO-CHUAN CAI (University of Kentucky): ``Domain Decomposition

Methods for Nonsymmetric and Indefinite Systems of Equations''.

CHARBEL FARHAT (University of Colorado at Boulder): ``Tailoring DD

Methods for Fast Parallel Coarse Grid Solution, Multiple Right Hand

Sides, and Adaptive Refinement''.

ROLAND GLOWINSKI (University of Houston): ``Merging Domain

Decomposition and Domain Imbedding Methods for Solving Elliptic and

Time Dependent Problems''.

WILLIAM GROPP (Argonne National Laboratories): ``Parallel Software

for Domain Decomposition Algorithms''.

GEORGES JOLICARD (Universite de Franche-Comte): ``The Wave Operator

Theory as a Tool to Define Active Spaces and Simplified Dynamics in

Large Size Quantum Spaces''.

DANA KNOLL (Idaho National Engineering Laboratory): ``Newton

-Krylov-Schwarz Methods Applied to the Tokamak Edge Plasma Fluid

Equations''.

ANDREW LUMSDAINE (Notre Dame University): ``Domain Decomposition in

Space and Time: Accelerated Waveform Methods for Semiconductor

Device Simulation''.

ALFIO QUARTERONI (Universita degli Studi di Milano in Italy):

``Domain Decomposition Methods for Wave Propagation Problems''.

FRANCOIS-XAVIER ROUX (Office National d'Etudes et de Recherches

Aerospatiales in Chatillon, France): ``Parallel Implementation of a

Domain Decomposition Method for Non-Linear Elasticity Problems''.

DAVID SCHWENKE (NASA Ames Research Center): ``New Ideas for Problem

Decomposition Methods in Quantum Mechanical Reactive Scattering''.

ELLEN STECHEL (Sandia National Laboratories): ``Large-Scale

Electronic Structure Calculations for Very Large Systems''.

TAYFUN TEZDUYAR (University of Minnesota): ``Parallel Finite

Element Computation of Flow Problems''.

V. VENKATAKRISHNAN (Institute of Computer Applications in Science

and Engineering in Virginia): ``Parallel Implicit Methods for

Aerodynamic Applications on Unstructured Grids''.

H.-J. WERNER (Universitat Bielefeld): ``Electron Correlation in

Molecules''.

JACOB WHITE (Massachusetts Institute of Technology): ``Aspects of

Multipole and FFT Accelerators for the Rapid Solution of

Three-Dimensional Potential Integral Equations, with Applications''.

------------------------------

From: Alan J. Laub <laub@riccati.ece.ucsb.edu>

Date: Tue, 23 Nov 93 12:13:47 PST

**Subject: Position at Univ. California, Santa Barbara**

University of California, Santa Barbara

Electrical and Computer Engineering

Applications are invited for a tenure-track faculty

position in engineering computation, available

effective July 1, 1994. The level of the position

is open. It is expected that the successful

candidate will interact most strongly with faculty

in communications, control, and/or signal and image

processing, but significant interaction with researchers

in computer engineering, computer science, solid state,

and wave electronics are also possible and desirable.

Specific computational areas of interest include

partial differential equations, ordinary differential

equations, optimization, wavelets, and stochastic analysis.

Normally, completion of a doctorate is required at

the time of the appointment. Candidates should have

an established research reputation or outstanding

research potential, a record of or the ability to

attract external research funding, and a strong

commitment to teaching at the undergraduate and

graduate levels. Applicants should send their

resumes and the names and addresses of at least

four professional references to:

Faculty Search Committee

Dept. of Electrical and Computer Engineering

University of California

Santa Barbara, CA 93106-9560

Applications will be received until the position is

filled. UCSB is an Equal Opportunity/Affirmative

Action employer.

------------------------------

From: Bob Russell <russell@cs.sfu.ca>

Date: 23 Nov 93 18:53 -0800

**Subject: Position at Simon Fraser University**

POSITION IN APPLIED AND COMPUTATIONAL MATHEMATICS

DEPARTMENT OF MATHEMATICS AND STATISTICS, SIMON FRASER UNIVERSITY

VANCOUVER, BRITISH COLUMBIA

The Department of Mathematics and Statistics of Simon Fraser University

invites applications for a tenure track position in Applied and

Computational Mathematics at the Assistant Professor level starting

September 1, 1994. We are looking for applicants with an interest in

non-linear applied mathematics; particularly those whose research focuses

on differential equations and their applications. Applicants will be

expected to have completed a PhD degree at the time of appointment and to

have demonstrated a strong teaching and research potential. (This position

is subject to final budgetary approval.)

Applications, including curriculum vitae, descriptive statements on

research plans and teaching activities should be sent, by 15 February 1994,

to:

Dr. Katherine Heinrich, Chair

Department of Mathematics and Statistics

Simon Fraser University

Burnaby, BC V5A 1S6

Canada

Please arrange for three letters of reference to be sent directly from the

referees.

Simon Fraser University is committed to the principle of equity in

employment and offers equal employment opportunities to all qualified

applicants. In accordance with Canadian immigration requirements, this

advertisement is directed to those who are eligible at the time of the

application for employment in Canada.>

------------------------------

From: Iain Duff <isd@letterbox.rl.ac.uk>

Date: Thu, 25 Nov 93 10:43:33 GMT

**Subject: Contents: IMA Journal of Numerical Analysis**

Contents

IMA Journal of Numerical Analysis

Volume 14. Number 1

Jan. 1994

Simpson R B

Testing for effects of asymmetry and instability on preconditioned iterations

of conjugate gradient type.

Qin Sheng

Global error estimates for exponential splitting

Levesley J, Hough D M, and Chandler-Wilde S N

A Chebyshev collocation method for solving Symm's integral equation for

conformal mapping: a partial error analysis.

Mastroianni G and Monegato G

Nystrom interpolants based on the zeros of Legendre polynomials for a

non-compact integral operator equation.

Semper B

Locking in finite-element approximations to long thin extensible beams.

Gastaldi F and Gastaldi L

On a domain decomposition for the transport equation: theory and finite element

approximation

Wu W, Spence A, and Cliffe K A

Steady-state/Hopf mode interaction at a symmetry-breaking Takens-Bogdanov point.

------------------------------

End of NA Digest

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