NA Digest Sunday, February 9, 1997 Volume 97 : Issue 06

Today's Editor:
Cleve Moler
The MathWorks, Inc.

Submissions for NA Digest:

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Information about NA-NET:

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URL for the World Wide Web: -------------------------------------------------------

From: Manil Suri <>
Date: Wed, 05 Feb 1997 11:05:20 -0500 (EST)
Subject: Soren S. Jensen

Soren S. Jensen

This is to announce the sudden and untimely death of Soren Jensen on
Sunday, Feb 2, 1997, from a heart problem. He was 41. He is survived by his
wife Pauline, and his three daughters, Elizabeth, Serina and Natasha.

Soren received his Ph.D. from the University of Maryland, College Park, in
1985, under the guidance of Ivo Babuska. After graduating, he joined the
faculty of the Department of Mathematics and Statistics, University of
Maryland Baltimore County, where he was promoted to Associate Professor
with tenure in 1992. Besides being an accomplished and well-known
researcher in the field of finite element methods, with over thirty articles
to his credit, he was also one of the Department's best and most popular
teachers. Friends, colleagues and students will miss his
dependable smile, his sunny personality, his wit and intelligence,
his broad and far-reaching mathematical knowledge, his patience at explaining
things, and the many other unique and wonderful qualities that made him so
universally well-liked.

In lieu of flowers or other gifts, a fund has been set up:

Jensen Children Educational Fund
c/o First National Bank
P.O. Box 247
Hampstead, MD 21074


From: Ron Buckmire <>
Date: Thu, 6 Feb 1997 21:27:20 -0800
Subject: New Mailing List on the Teaching of Numerical Analysis

By popular demand, I *have* created the mailing list I was talking about in
a post to NA-NET two weeks ago. Here is the information file that all new
subscribers get sent to them...


NA-TEACH is an internet mailing list devoted to the discussion of the teaching
of NUMERICAL ANALYSIS. Though it is intended to be a list devoted to teaching
in an undergraduate setting, it is not restricted to this.

Regular topics on NA-TEACH could include: a discussion of new Numerical Analysis
textbooks, broadcasts of URLs where documents on numerical analysis can be
found, personal reports on teaching numerical courses at your institution,
impact of technology on the teaching of numerical analysis, curriculum debates,
reform of numerical analysis courses, etc etc.

There is a related list, called NA-NET, run out of the Oak Ridge National Labs,
which is reached at or which NA-TEACH
evolved from.

NA-TEACH will *not* be a moderated list. If people are interested in a moderated
list then I will gladly accept volunteers to be the moderator.

I will start it off as an UN-DIGESTED list, but will make a DIGEST available,
if people request it.

List Arrival:

To join the NA-TEACH mailing list, send a message to
with one line in the message body


List Departure:

To leave the NA-TEACH mailing list, send message to
with one line in the message body


List Posting:

To post to the NA-TEACH mailing list send a message to

Please note that the list is maintained by Majordomo 1.92, a sophisticated
program written in Perl 4.036a. Most list functions are automated. Do not
attempt to send non-command oriented messages to Majordomo. It will seimply
reject them. It will also reject any commands in the Subject: field. If you
have questions about lists of commands, email the
command HELP.

Any other questions about the list should be sent to or

You can get a copy of this message by emailing the command INFO NA-TEACH
to the address.

Asst. Prof., Math Dept., Occidental College, 1600 Campus Road, L.A., CA 90041||+1 213 259 2536 (v)||+1 213 259 2958 (f)||Gore-Boxer 2000


From: Mohsen Maesumi <>
Date: Fri, 7 Feb 97 14:09:28 CST
Subject: Looking for a Program to Maximize a Convex Function

I am looking for efficient programs which calculate the
maximum of a convex function over a (polyhedral) convex set in R^n.
In particular I would like to know if a homotopy method is the best.

The specific problem is a standard one: to calculate the induced norm of
a matrix given the unit ball of the vector norm.
In other words assume the following are given:
A matrix M,
and a unit ball B (in R^n) which defines a vector norm: ||x||=1 if x is on B.
Find max ||Mx|| while x is restricted to B.



From: Stanly Steinberg <>
Date: Tue, 4 Feb 1997 10:12:14 -0700 (MST)
Subject: Seeking Information on netCDF and Related Systems

I have some out-of-date documentation on netCDF -- Network Common
Data Form -- which is a system for sharing scientific data. Can
someone forward me a pointer to current information on this system.
I am also interested in pointers to competing systems.



From: Julio Dix <>
Date: Thu, 6 Feb 1997 09:30:51 -0600
Subject: Electronic Journal of Differential Equations

invites you to visit our Web page at or at
ftp (login: ftp)

To readers we offer:
* Free access to high quality research articles which are available
in PostScript, DVI, and TeX format.
* Free e-mail subscriptions to abstracts of newly accepted articles.

To authors we offer:
* The invitation to submit articles related to topics in differential
equations and their applications. (ODE's, PDE's, integral equations,
functional differential equations, etc.)
* No delay between acceptance and publication.
* No page charges: Authors submit their work as TeX or LaTeX files
so there are no type-setting expenses.
* Copies for posterity. The Library of Congress holds hard copies of
each article under ISSN 1072-6691. Also the university libraries at
Southwest Texas State University and the University of North Texas
have hard copies.

Articles are reviewed and indexed by Math Reviews and by
Zentralblatt fur Mathematik.


From: John Prentice <>
Date: Mon, 3 Feb 1997 04:13:25 -0700
Subject: High Performance Fortran User Meeting

First Annual HPF User Group Meeting
Sante Fe, New Mexico
February 24-26, 1997, Eldorado Hotel

Sponsored by
Center for Research on Parallel Computation
Los Alamos National Laboratory

The First Annual High Performance Fortran (HPF) User Group Meeting will
be held February 24 to 26, 1997, at the Eldorado Hotel in Sante Fe,
New Mexico. The meeting will provide an opportunity for users of HPF
to meet each other, share ideas and experience, and get up-to-date
information about implementations and future directions.

Additional information can be retrieved on the World Wide Web at:


From: C. H. Lai <>
Date: Wed, 5 Feb 1997 10:55:05 GMT
Subject: High Performance Computing Short Course

We would like to annouce a professional development course on
'High Performance Computing and Applications'
to be held at the University of Greenwich, 7th - 11th April 1997.

The Course provides:

Continuing professional training for computational scientists,
engineers, mathematicians, accountants, financial and marketing
analysts and management.

Awareness of leading edge high performance computing technology
for other professionals who require the use of information

Sufficient exposure of training to enable participants to parallelise
and/or exploit practical codes in a hpc environment.

Suitable accumulation of credits of study for post-graduate students
in a discipline of using Computers.

Note: For post-graduate participants, we have arranged some financial support.

Please obtain details from

You may use the on-line registration form to do registration.
Course details are provided there, please help yourself.


From: Bram Van Leer <>
Date: Wed, 5 Feb 1997 12:29:37 -0500 (EST)
Subject: Symposium Honoring Godunov

"Godunov's Method for Gas Dynamics:
Current Applications and Future Developments"

in honor of
the Russian mathematician

Sergei Konstantinovich Godunov

DATE: 1-2 May, 1997

PLACE: College of Engineering
The University of Michigan
Ann Arbor, MI

On May 3, 1997, Prof S. K. Godunov (Institute of Mathematics,
Russian Academy of Sciences, Novosibirsk, Russia) will receive
an honorary degree from the University of Michigan.
Preceding the ceremony a symposium will be held
on Godunov-type numerical methods, which are widely
used to compute continuum processes dominated by wave propagation.

The symposium will have international participation; it will
bring together senior researchers who are experts in the
development and use of Godunov-type methods, junior researchers
who are currently making significant contributions in this field,
graduate students just entering the field, and other interested

The scientific part of the symposium starts with an overview of
Prof. Godunov's most influential work in applied and numerical
mathematics, and its impact on science and engineering,
presented by one of the local faculty. In the following three sessions
of half-hour talks, invited speakers from diverse disciplines will
lay a link between his work and powerful methodologies currently in
use in Computational Fluid Dynamics (CFD) and other computational
fields. The three sessions of presentations will provide the symposium
participants with a colorful and broad image of the state of
computational science. In turn, this will serve as the basis for three
end-of-session panel discussions on
``Current and Future Directions in Computational Science,''
lending a workshop character to the meeting.

At some point Prof. Godunov will address the conference with an
account of the earliest developments in CFD in Russia, developments
in which he was personally involved.

Chairperson of the Symposium is Prof. Bram van Leer (Aerospace
Engineering). For information about symposium, registration and hotel
accomodation write to the symposium secretary:

Godunov Symposium
attn: Debbie Laird, Secretary
Department of Aerospace Engineering
The University of Michigan
Ann Arbor, MI 48109-2118

Phone (313) 764-7200
Fax (313) 763-0578

For up-to-date symposium information visit the Keck CFD Lab website


From: PaCT-97 Conference <>
Date: Thu, 6 Feb 1997 14:28:45 +0600 (NSK)
Subject: Parallel Computing Technologies Conference in Russia

Parallel Computing Technologies
Fourth International Conference
September 8-12, 1997
Yaroslavl, Russia

The Computing Center of the Russian Academy of Sciences
(Academgorodok, Novosibirsk) and the State University of Yaroslavl
are jointly organizing the Fourth International Conference on
PARALLEL COMPUTING TECHNOLOGIES (PaCT-97). This conference will be
held in Yaroslavl, September 8-12, 1997.

* All aspects of the applications of parallel computer systems
* General methods and tools for the solution of big size problems
* Languages, environment and software tools supporting parallel
* Operating systems, scheduling, mapping, load balancing
* General architecture concepts, enabling technologies
* Performance measurement and analysis
* Teaching parallel processing.

* V. Malyshkin Chairman (Russian Academy of Sciences)
* O. Bandman (Russian Academy of Sciences)
* H. Burkhart (University of Basel, Switzerland)
* P. Ciancarini (University of Bologna, Italy)
* M. Cosnard (Ecole Normale Superieure de Lyon, France)
* S. Das (University of North Texas, USA)
* J. Dongarra (University of Tennessee, USA)
* W. Gentzsch (GENIAS Software GmbH, Germany)
* W. Haendler (Erlangen-Nurnberg University, Germany)
* V. Ivannikov (Russian Academy of Sciences)
* Ph.Jorrand (LEIBNIZ laboratory, IMAG, France)
* V. Kotov (HP, USA)
* B. Lecussan (ONERA/CERT, France)
* V. Levin (Kvant, Russia)
* G. Mauri (University of Milano, Italy)
* N. Mirenkov (The University of Aizu, Japan)
* E. Ozkarahan (Dokuz Eylul University, Turkey)
* J.-E.Pin (LITP, Institut Blaise Pascal, France)
* I. Pottosin (Russian Academy of Sciences)
* B. Roux (Institut de Mecanique des Fluides de Marseilles,
* E. Shurina (State Technical University of Novosibirsk, Russia)
* G. Silberman (IBM TJ Watson Research Center, USA)
* J. Smith (Drexel University, USA)
* L.-E.Thorelli (Royal Institute of Technology, Sweden)

PaCT-97 Organising Committee
Supercomputer Software Department
Computing Center
Lavrentiev pr., 6
Novosibirsk 630090, RUSSIA

Phone (+7) 3832-350-994
Fax (+7) 3832-324-259

If you have a problem to visit our Web at the URL
you can try to visit URLs or
receive more detailed information by anonymous ftp at address, directory /pub/pact97/, file "cfp.doc" or

Information on PaCT conferences series can be found at the URL


From: Gerardo Toraldo <>
Date: Thu, 6 Feb 1997 15:22:24 +0100
Subject: Conference on Software for Nonlinear Optimization

Center for Research on Parallel Computing and Supercomputers
Short Conference on
STATUS AND PERSPECTIVES''. Ischia, Italy 4 - 6 June 1997
H P S N O 97

The Conference, which is planned to be organized biennially,
follows the HPSNO95 Conference that was held in June 95, and
whose main contributions were published in a special issue of
Computational Optimization and Applications.
Putting together the recent progress in computer technology with
the latest algorithmic developments in the field of numerical
optimization represents an exciting challenge for researchers and
an interesting opportunity for dealing with very large ``real
life'' problems.
The focus of the conference is to cover the latest results in
optimization software and, in particular, optimization software for
high performance computers. The conference will provide an overview
of the nonlinear optimization field, including algorithms,
software evaluation, implementation issues, applications and
ture areas of research through autoritative lectures given by
some of the most active researchers in the field.
The Conference aims to promote research activities and cooperation
among scientists in the field and therefore it will provide
ample opportunity for informal exchange of ideas among researchers.
The Conference will include lectures given by guest speakers
and by authors of selected contributed papers.
The list of invited speakers includes: C. H. Bischof, Nick Gould,
W. Hager,J.J. More', P. Pardalos, M.C. Resende, P.L.Toint, M. Wright.


* Prof. Jorge More' (Argonne National Laboratory, Argonne, USA)
* Prof. Almerico Murli (CPS, ITALY)
* Prof. Panos Pardalos (University of Florida, Gainesville, USA)

* April 1 1997 - Submission of abstracts ante
* April 30 1997 - Notification of acceptance.
* April 5 1997 - Hotel reservation.

For information or for registration, send an e-mail message to
or contact
or send a fax or a letter to Almerico Murli or to Gerardo
Toraldo: CPS - Via Cintia, Monte S.Angelo 80126, Napoli - ITALY.
fax# +39-81-7662106


From: George Karypis <>
Date: Mon, 3 Feb 1997 11:49:33 -0600 (CST)
Subject: Postdoctoral Position at University of Minnesota

Postdoctoral Positions for Research on Parallel Algorithms

Applications are invited for postdoctoral positions at
the Center for parallel Computing, Department of Computer Science
at the University of Minnesota.
Candidates will perform research on parallel algorithms and develop
scalable parallel libraries. Candidates will also participate in
collaborative projects with the Army High Performance Computing
Research Center. These positions will be under the
direction of Professors Vipin Kumar and George Karypis.
Projects in progress include parallel algorithms for graph partitioning,
adaptive mesh refinement, mesh generation, preconditioners for iterative
sparse linear system solvers, and data mining.
Additional details on the ongoing projects are available from

Candidates must have a PhD in computer science, mathematics, or a
related discipline. Expertise in parallel computing is essential,
and expertise in scientific computing is highly desirable.
The positions are for a period of one year, and will be renewable
subject to availability of funds and satisfactory performance.
The salary will be competitive and based upon qualifications and experience.
Positions are available immediately. Applications will be accepted
until poistions are filled.

To apply, please submit a resume, and names of three references to

Postdoctoral Position Search Committee
Computer science Department
EE/CSci 4-192
200 Union Street, S.E.
University of Minnesota
Minneapolis, MN 55455
Attn: Professor Vipin Kumar

Candidates are also encouraged to send their application via e-mail
to Vipin Kumar ( or George Karypis (


From: Iain Duff <>
Date: Mon, 3 Feb 97 23:11:11 GMT
Subject: Postdoctoral and PhD Positions at CERFACS

C . E . R . F . A . C . S.



C.E.R.F.A.C.S. aims to develop improved scientific computational methods
and to increase the understanding of the physics, numerics and algorithmics
involved in simulations. Based in Toulouse, France, C.E.R.F.A.C.S. has
researchers and engineers from many countries in Europe.

C.E.R.F.A.C.S. offers, for Summer/Fall 1997
Post-Doctorate and PhD positions.


* Parallel Algorithms : Linear Algebra, Non-linear Optimization, Numerical
* Computational Fluids Dynamics : Turbulence, Aerodynamics, Combustion,
Flow Control
* Global Climate Modelling and Data Assimilation Techniques


Candidates should submit :

1- A covering letter indicating the research theme of interest to you, your
motivations for applying and the way in which you will be able to
contribute to the interdisciplinary nature of C.E.R.F.A.C.S.
2- A Curriculum Vitae with a detailed description of your training in the
above research themes and in the use of high-performance computing.
3- A copy of qualifications (either a Masters in Science or a Masters in
Engineering or a DEA or equivalent)
4- Names, addresses and telephone numbers of three people who would be
willing to write a letter of reference


Candidates should submit :

1- A covering letter indicating the research theme of interest to you,
a statement of a specific problem you would like to work on, your
motivations for applying and the way in which you will be
able to contribute to the interdisciplinary nature of C.E.R.F.A.C.S.
2- A Curriculum Vitae highlighting experience and results obtained in the
above research themes and in the use of high-performance computing.
3- A one-page summary of your thesis and a copy of your thesis and list of
4- Transcript of your graduate course work
5- A copy of your qualifications (PhD or equivalent)
6- Names, addresses and telephone numbers of three people who would be
willing to write a letter of reference


* The duration of the PhD grant is 2 years (with a possibility of extending
it for 1 year) and the monthly gross amount is 12 000 FF (ie before social
security and income tax).
* The post doctorate grant covers a period of 1 year (with a possibility of
extending it for 1 year) and the monthly gross amount is between 15 000 FF
and 17 000 FF depending upon qualification and experience (ie. before social
security and income tax). A lump sum of 10 000 FF will be given to account
for moving expenses.
* All applications which do not have the information mentioned above will
be refused
* Final application forms must be received before the 20th April, 1997

42 Avenue Gaspard Coriolis 31057 TOULOUSE Cedex 1 (France)
Tel. : 33/ (0) 5 61 19 30 05 Fax : 33/ (0) 5 61 19 30 30
E. Mail :
URL address :


End of NA Digest