- Today's Editor:
- Cleve Moler
- The MathWorks, Inc.
- moler@mathworks.com

- LPARX Software Available
- Automated Design Synthesis and Aerodynamic Software
- Looking for 3-d Grid Generation Algorithms
- Delay Differential Equations
- New Book, Solving PDEs on Parallel Computers
- International Symposium on Math Programming
- Applications of Interval Computations
- Workshop on Multilevel Methods
- One-day symposium at CWI
- SERC Numerical Analysis Summer School
- Los Alamos Computational Science Workshop
- Postdoctoral Positions at Argonne
- Postdoctoral Position at INRIA/IRISA
- Contents, Advances in Computational Mathematics

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

From: Scott B. Baden <baden@cs.ucsd.edu>

Date: Sun, 10 Apr 94 22:24:30 -0700

**Subject: LPARX Software Available**

I'm happy to announce that v1.0 of the LPAR-X system is now

available. Included are C++ application codes, among

them, multigrid.

LPARX provides efficient run-time support for dynamic,

non-uniform scientific calculations running on MIMD

distributed memory architectures, and is intended for block

structured and multilevel applications involving structured

meshes, and for particle methods.

LPARX applications are portable across a diversity of MIMD

machines, and may be written in a form that is partially

independent of the problem dimension. They may be debugged

on a workstation simplifying code development.

The LPARX software is implemented as a C++ class library.

It currently run on the Intel Paragon, the CM-5, KSR-1,

nCube/2, networks of workstations under PVM, single

processor workstations, and on the Cray C-90 (single

processor at the moment). LPAR-X will soon run on the C-90

in multitasked mode, and on the T3D.

The LPARX distribution is available via anonymous ftp on

site ftp.sdsc.edu. Look in directory pub/sdsc/parallel/lparx.

The distribution is also available on anonymous ftp site

cs.ucsd.edu in directory pub/baden/LPARX. Technical reports

are also available in subdirectory "reports."

Technical questions should be sent to Scott Kohn at

skohn@cs.ucsd.edu.

Scott Baden

Scott Kohn

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

From: Bruno Stoufflet <stoufflet@dassault-avion.fr>

Date: Mon, 11 Apr 94 15:55:56 +0200

**Subject: Automated Design Synthesis and Aerodynamic Software**

I am looking for optimization software called A.D.S. It is described as

a Fortran program for Automated Design Synthesis. It has been developped

by G.N. Vanderplaats and I have no idea how to contact him or people in

charge of distributing this package. Has anyone some information about

this package?

I am also looking for aerodynamic software packages able to give aerodynamic

coefficients for 2D (and if possible for 3D) profiles or configurations based

on profiles. I am looking on computing programs based on fast methods (as

pannel methods) in order to evaluate the static and dynamic performances of

some configurations. These programs are to be used for a use within an

association and not for professional use. I am looking for packages available

in freeware or which are commercialized. I would appreciate any information on

that subject.

Thank you

Bruno Stoufflet

stoufflet@dassault-avion.fr

Durun-Durun association

Thank you

Bruno Stoufflet

scetasto%scetas09@dassav.dassault-avion.fr

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

From: John Prentice <prentice@cs.unm.edu>

Date: Thu, 14 Apr 94 08:39:17 MDT

**Subject: Looking for 3-d Grid Generation Algorithms**

Quetzal Computational Associates, in collaboration with Sandia National

Laboratory and Alliant Tech Systems has developed a linked Lagrangian

finite element/Eulerian finite difference methodology for modeling solid

mechanics problems which have large deformations in some regions and small

deformations in other regions where you also need high fidelity calculation

of the structural response. Applications include advanced manufacturing

such as forging where you want to be able to model the metallurgy of the

process, as well as problems involving impact and penetration such as

automobile crashes or impacts of debris on airplanes or spacecraft.

During the last two years, we have concentrated on the development and

validation of the numerical methods for this process. We currently have a

code for modeling both 2 and 3 dimensional problems of this type, running

on everything from Sparcs to MPP systems. Our attention is now focused

on developing input generators that eliminate the need to understand

how to set up the particular inputs for the various codes involved in these

calculations. One aspect of this intelligent front end for this code

is the generation of 2 and 3 dimensional finite element grids on fairly

complex objects. It is this part of the problem that is the point of this

post.

We have some experience with grid generation, but we are not experts at it

by a long shot. We have 2d grid generation fairly well in hand, but 3d grid

generation is another issue altogether. I am therefore surveying the

community to see what 3d grid generation software (or algorithms) are

available for doing 3d griding of finite element meshes. Note that we are

griding volumes, not surfaces. The intent of this whole project is to make

this software available to qualified users at minimal cost, so we are anxious

to make use of as much software and algorithms in the public domain as

possible. So, if you can point us at references or software, we would much

appreciate it!

John

John K. Prentice

Quetzal Computational Associates

3200 Carlisle N.E., Albuquerque, NM 87110-1664 USA

Phone: 505-889-4543 Fax: 505-889-4598 E-mail: quetzal@aip.org

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

From: Heru Suhartanto <heru@ogah.cs.ui.ac.id>

Date: Thu, 14 Apr 94 10:08:22+070

**Subject: Delay Differential Equations**

Dear Na-Net members,

I'll be working on delay differential equation but in my country it's

difficult for me to find references which covers the subject .

If you know the references (books or articles) and any public domain

subroutines on DDE, could you please let me know by sending the messages

directly to me? I'm not a regular member of na-net. I thank you very much

for the cooperation.

regards,

Heru Suhartanto

e-mail: heru@cs.ui.ac.id

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

From: Jiangping Zhu <jzhu@ERC.MsState.Edu>

Date: Thu, 14 Apr 94 11:48:25 CDT

**Subject: New Book, Solving PDEs on Parallel Computers**

I am pleased to announce the publication of the book:

SOLVING PARTIAL DIFFERENTIAL EQUATIONS ON

PARALLEL COMPUTERS

by Jianping Zhu

The book is intended to quickly bring researchers and graduate

students, who are working on numerical solutions of partial

differential equations with various applications, into the area

of parallel processing. The level of discussion is introductory.

More than two hundred references are included to direct interested

readers for more detailed and in-depth discussions of specific

topics.

Contents: Introduction, parallel algorithms for solving partial

differential equations, implementations, applications,

parallel time stepping algorithms, future development.

Copies can be ordered directly from the publisher:

World Scientific Publishing

ISBN 981-02-1578-9

USA: 1-800-227-7562

Europe: 44-81-4463356 (fax)

Jianping Zhu

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

From: Stephen Vavasis <vavasis@cs.cornell.edu>

Date: Sun, 10 Apr 94 12:12:08 -0400

**Subject: International Symposium on Math Programming**

The 15th International Symposium on Math Programming will be held in

Ann Arbor, Michigan, August 15-19, 1994. The General Chair of the

meeting is John Birge. Further information may be obtained by sending

email to xvismp@um.cc.umich.edu.

-- Steve Vavasis

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

From: Vladik Kreinovich <vladik@cs.ep.utexas.edu>

Date: Sun, 10 Apr 94 17:22:20 MDT

**Subject: Applications of Interval Computations**

Call for papers for APPLICATIONS OF INTERVAL COMPUTATIONS

International Workshop, El Paso, Texas, week of February 19--25, 1995

High-quality papers on all areas of applications of interval

computations are sought, especially applications to manufacturing and

(broadly understood) quality control.

WE ARE LOOKING FOR solutions, methods, open problems, and raw ideas

related to applications (real or potential) of interval processing.

PROGRAM COMMITTEE:

* A. Bernat (editor of Interval Computations);

* R. Baker Kearfott (the representative of the Interval

Computations Journal in Western Hemisphere);

* V. Kreinovich (a co-editor of a special issue of Interval

Computations devoted to parallel processing);

* Th. McLean (a specialist in applying interval methods in

manufacturing);

* G. N. Solopchenko (Vice-President of the Russian Academy of Metrological

Sciences).

DEADLINE: September 1, 1994. Send an abstract of 4 pages or less to

Vladik Kreinovich, Department of Computer Science, University of Texas

at El Paso, El Paso, TX 79968, USA, email vladik@cs.ep.utexas.edu,

fax (915) 747-5030, phone (915) 747-6951. Ideally, abstracts should be

in a version of TeX (AMS-TeX, TeX, or LaTeX), but ASCII, WP, and other

formats are acceptable. Refereed Proceeding will be published. Best

papers will appear in the international journal Interval Computations.

Contact Kreinovich for additional information.

SUGGESTIONS of tutorials and panel topics are welcome.

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

From: Lutz Tobiska <Lutz.Tobiska@Mathematik.Uni-Magdeburg.D400.DE>

Date: Mon, 11 Apr 1994 13:04:11 +0200 (MESZ)

**Subject: Workshop on Multilevel Methods**

The Institute for Analysis and Numerical Mathematics of the

University Magdeburg in cooperation with the GAMM Committee

"Efficient numerical methods for pde" organizes the

GAMM - Workshop

on

Multilevel Methods

Chairmanship: D.Braess (Bochum), U.Langer (Linz),

L.Tobiska (Magdeburg)

Date: September 26 to 28, 1994

Location: Parkhotel "Schloss Meisdorf", Meisdorf (Harz)

Topics: theory and applications of multilevel

methods, parallelization aspects, subspace

correction methods, hierarchical basis

techniques, adaptive refinement

Conference fee: about 80 DM

Invited Speakers (preliminary list):

S.C.Brenner, W.Hackbusch, S.V.Nepomnyaschikh,

A.Reusken, V.Shaidurov, J.Xu

Registration: until April 15, 1994

Abstracts: 10-20 lines, deadline: May 15, 1994

Accommodation: you can be accommodated in the Parkhotel

"Schloss Meisdorf". The price for single

and double rooms ranges between 40 and 115 DM

per night

Contact address: F.Schieweck

Department of Mathematics

University Magdeburg

PSF 4120

D-39016 Magdeburg

Germany

e-mail: Friedhelm.Schieweck@Mathematik.Uni-Magdeburg.d400.de

Phone: +49-391 5592-2236 Fax: +49-391 5592-2758

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

From: Jan Verwer <Jan.Verwer@cwi.nl>

Date: Tue, 12 Apr 1994 12:13:55 GMT

**Subject: One-day symposium at CWI**

CWI SYMPOSIA

TOPICS IN ENVIRONMENTAL MATHEMATICS

To promote collaboration in research in Environmental Mathematics,

CWI organizes a series of symposia on topics of interest to

mathematicians and environmental scientists from various fields.

The next meeting in this series will be devoted to

transport-chemistry problems arising in atmospheric air pollution

research. The focus is on numerical algorithms and applications.

NUMERICAL ALGORITHMS FOR ATMOSPHERIC TRANSPORT-CHEMISTRY PROBLEMS

May 18, 1994

Center for Mathematics and Computer Science (CWI)

Kruislaan 413, 1098 SJ Amsterdam

Room M279

The Speakers include:

David Simpson (The Norwegian Meteorological Institute, Oslo):

Application of Numerical Methods in Long Period

Atmospheric Chemistry Modelling

Jan Verwer (CWI):

Explicit Methods for Stiff ODEs from Atmospheric Chemistry

Christoph Kessler (Institut fuer Technische Thermodynamik,

Universitaet Karlsruhe):

Application of a New Solution Algorithm for Chemical

Reaction Models Included in a 3D-Dispersion Model

Cees Beets (IMAU: Institute for Marine and Atmospheric

Research, University of Utrecht):

Large-Eddy Simulation for Turbulent Reacting Fluids

Han The (RIVM: National Institute of Public Health

and Environmental Protection, Bilthoven):

Experiences with QUICKEST in MOGUNTIA

Willem Hundsdorfer (CWI):

Dimension Splitting for Advection on a Sphere

Preregistration is not required.

For information contact Jan Verwer, janv@cwi.nl, (tel. 020 - 5924095)

or Willem Hundsdorfer, willem@cwi.nl, (tel. 020 - 5924096).

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

From: Mark Ainsworth <ain@mcs.le.ac.uk>

Date: Fri, 15 Apr 94 16:22:57 BST

**Subject: SERC Numerical Analysis Summer School**

SERC Numerical Analysis Summer School

Leicester University

18 - 29 July, 1994

The sixth SERC sponsored Numerical Analysis Summer School is to be held at

Leicester next summer. The meeting will comprise two one-week modules each

of which can `stand alone' though it is hoped that many participants will

stay for longer periods. SERC will contribute towards the subsistence costs

of a limited number of participants each week. The meeting is open to all

interested researchers, but only those currently employed in the UK will be

eligible for SERC support.

In each week there will be three five-lecture courses given by the invited

instructors, additional activities organised by the local expert and a

programme of current research seminars given by participants. The outline

programme for the meeting is:

Numerical Solution of Partial Differential Equations (18 - 22 July)

Claes Johnson (Chalmers) Adaptive Finite Element Techniques

Ian Sloan (New South Wales) Boundary Integral Methods

Andrew Stuart (Stanford) Dynamics of Numerical Methods

Numerical Solution of Ordinary Differential Equations (25 - 29 July)

George Corliss (Marquette) Guaranteed Error Bounds

Linda Petzold (Minnesota) Differential Algebraic Equations

Marino Zennaro (Italy) Delay Differential Equations

The lectures will take place from Monday to Friday each week and there will be

a substantial amount of time available for research and discussion with the

assembled experts. The aim of the specialist courses is to enable people with

initially only a nodding acquaintance with a topic to concentrate on it and end

up feeling quite competent in it, thus broadening their research horizons. It

is hoped that a participant with a good initial knowledge may be enabled to

work on significant problems in the area.

It is expected that there will be exhibitions of books and of computer

equipment during the meeting.

Further details and application forms are available from

Mark Ainsworth, Department of Mathematics, Leicester University,

Leicester LE1 7RH, UK.

Email: ain@mcs.le.ac.uk

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

From: Computer Science Workshop <csw@witch.eece.unm.edu>

Date: 15 Apr 1994 19:30:23 GMT

**Subject: Los Alamos Computational Science Workshop**

Advanced Computing Laboratory / EECE Department

Los Alamos National Laboratory / University of New Mexico

Computational Science Workshop

Call For Participants

Summer 1994 Session --- August 1-5, 1994

The Advanced Computing Laboratory at Los Alamos National Laboratory and

the University of New Mexico Electrical and Computer Engineering Department

invite scientists and engineers to participate in the summer session of the

1994 Los Alamos Computational Science Workshop. The workshop,

which will be held on the campus of the University of New

Mexico in Albuquerque, NM, provides an opportunity for professionals

to explore the application of high performance computing to current

scientific problems.

The research environment at Los Alamos National Laboratory fosters

high performance computing methodologies and innovative multi-

disciplinary collaborations. Los Alamos has always been a leader in high

performance computing; many of the nation's scientific "grand challenge"

problems -- fundamental problems with broad economic and scientific

impact -- are being addressed by researchers at the Laboratory.

The Workshop is a seminar on high performance computational methods,

environments and tools. It will consist of a one-week intensive overview

presenting the technologies, the methodologies and the applications of high

performance computing.

Specific topics that will be addressed will include:

* Advanced Computer Architectures * Distributed Computing

* High Speed Networking * Models of Parallel Programming

* Performance Measurement * Scientific Visualization

* Parallel Numerical Methods * High Performance Computing

Applications

Those registering for the workshop should have:

* Fortran or C programming experience or coursework

* familiarity with UNIX

There are no registration fees associated with the workshop.

For more information, including a registration form, contact

EECE, Robert Luke

Department of Electrical and Computer Engineering

University of New Mexico

Albuquerque, NM 87131-1356

or email to: csw@eece.unm.edu

Voice: (505) 277-2883

FAX: (505) 277-1413, Attn: Robert Luke

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

From: Stephen Wright <wright@mcs.anl.gov>

Date: Tue, 12 Apr 1994 13:52:59 -0500

**Subject: Postdoctoral Positions at Argonne**

Postdoctoral Position

Mathematics and Computer Science Division

Argonne National Laboratory

The Mathematics and Computer Science Division of Argonne National

Laboratory invites applications for postdoctoral research posi-

tions.

The successful candidates will become part of a team effort aimed

at improving the numerical algorithms used in the National Energy

Modeling System (NEMS). This system, which has been developed by

the Energy Information Agency of the Department of Energy, is a

model of the energy sector of the U.S. economy. It is used to

forecast future patterns of energy consumption and provides an

important tool for policy analysis in both government and indus-

try.

We seek candidates with expertise in one or more of the following

areas: analysis and implementation of algorithms for nonlinear

optimization and complementarity problems; implementation of

interior-point methods; implementation of algorithms for sparse

linear algebra; and tool development for scientific computing ap-

plications, particularly in parallel computing environments.

Project members have access to a state-of-the art computing en-

vironment, including an IBM SP1 and an Intel Touchstone DELTA.

Nominal requirements include a Ph.D. in applied mathematics, com-

puter science, or engineering. Applicants must have received

their Ph.D. not more than three years prior to the beginning of

the appointment.

Argonne is located in the southwestern Chicago suburbs, offering

the advantages of affordable housing and good schools, as well as

easy access to the cultural attractions of the city.

Applications should be addressed to Walter McFall, Box mcs-

postdoc1, Employment and Placement, Argonne National Laboratory,

9700 S. Cass Avenue, Argonne, IL 60439, and must include a

resume' and the names and addresses of three references. For

further information, contact Jorge More' (708-252-7238;

more@mcs.anl.gov) or Steve Wright (708-252-7847;

wright@mcs.anl.gov).

Argonne is an affirmative action/equal opportunity employer.

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

From: Jocelyne Erhel <Jocelyne.Erhel@irisa.fr>

Date: Thu, 14 Apr 1994 16:15:32 +0200

**Subject: Postdoctoral Position at INRIA/IRISA**

10-MONTH POST-DOCTORAL POSITION AT INRIA/IRISA

Scientific computing group

Rennes, France

Applications are called for a post-doctoral position in

parallel scientific computing. The position will be open

in September 1994 for 10 months.

This award is funded by a european grant (Human Capital and Mobility)

and is available only for EUROPEAN but french CITIZENS.

Applicants must have a Ph-D in Applied Mathematics, Computer Science

or a related field.

IRISA is a joint institute of INRIA-Rennes (the head is at Rocquencourt),

CNRS (associated laboratory), the University

(Computer Science department) and INSA (Computer Science department).

The group called "Advanced Algorithms for Scientific Computing"

studies numerical algorithms which should be both parallel and

numerically reliable. The domains of interest cover linear algebra

on sparse matrices and differential equations. Of special concern

are the projection methods using Krylov subspaces.

The algorithms are applied to large numerical simulations as

for example Computational Fluid Dynamics. The project is also

interested in programming environments for scientific computing.

The team is leaded by B. Philippe and is composed of about

10 persons.

The HCM contract is coordinated by the CERFACS (Toulouse, France)

and involves 9 institutes from France, Italy, GB, Switzerland,

Belgium, Sweden. It is entitled

"A modular approach to research in computational fluid dynamics,

iterative methods and high performance computing."

The IRISA (INRIA-Rennes) part is devoted to the application

of the Newton-GMRES algorithm to discretisations of the steady

Navier-Stokes equations as well as to implicit time-stepping

schemes. The procedure can be seen as an approximate Newton

algorithm which is matrix-free.

The candidate selected will work on this subject and related issues.

Salary : 14,764 French Francs per month.

Applicants should send their CV, the names of 2 referees and a

brief description of research interests.

Applications will be considered until the position is filled.

Electronic submission is preferred. Letters should be addressed to

Jocelyne Erhel

IRISA

Campus de Beaulieu

35042 Rennes Cedex

FRANCE

e-mail : erhel@irisa.fr

tel : (33) 99 84 73 39

fax : (33) 99 84 71 71

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

From: Daniel Baltzer <publish@baltzer.nl>

Date: Wed, 13 Apr 1994 16:18:49 +0200

**Subject: Contents, Advances in Computational Mathematics**

Advances in Computational Mathematics, Volume 2, No. 3, 1994, ISSN 1019

7168 Editors-in-Chief: John C. Mason (E-mail: j.c.mason@hud.ac.uk) &

Charles A. Micchelli (E-mail: cam@yktvmz.bitnet)

pp 261-277: A parallel implementation of the restarted GMRES iterative

algorithm for nonsymmetric systems of linear equations

R. Dias da Cunha and T. Hopkins

pp 279-317: Time-marching numerical schemes for the electric field integral

equation on a straight thin wire

P.J. Davies and D.B. Duncan

pp 319-341: Acceleration property for the E-algorithm and an application to

the summation of series

M. Prevost

pp 343-355: Hankel operators and best Hankel approximation on the half-plane

X. Li

Requests for FREE SPECIMEN copies and orders for Advances in Computational

Mathematics are to be sent to: E-mail: publish@baltzer.nl

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

End of NA Digest

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