NA Digest Monday, March 27, 1989 Volume 89 : Issue 12

Today's Editor: Cleve Moler

Today's Topics:


From: Arthur Wouk <>
Date: Mon, 20 Mar 89 19:34:33 EST
Subject: Change of Address for Arthur Wouk

As some of you may know, I am retiring from the Army Research Office
this week. After that time I will be a purely private person reading
email at '' and US Mail at

Arthur Wouk
5 Glenmore Drive
Durham NC 27707


I have enjoyed my many professional and personal contacts with the
members of na-net. I shall be devoting the first few months of
retirement to getting my ATT 3B1 (or UNIX-PC) up to functioning as a
node connecting to a mail and news feed and hope to be on the network
by this summer.

The final volume of ARO sponsored workshops which I ran, the one on
Medium Scale Multiprocessors should appear this spring.


From: Finbarr O'Sullivan <>
Date: Fri, 24 Mar 89 08:18:33 PST
Subject: Bibliographies, Troff to Tek

Does anyone know of a program that will convert a troff bibliography into
a tex bibliography?

Finbarr O'Sullivan {}


Date: Tue, 21 Mar 89 09:22:50 IST
Subject: International Linear Algebra Society

E-mail Address: MAR23AA @ TECHNION (bitnet)

ILAS-NET Message No. 46

SUBJECT: Ilas Inaugural Conference

On behalf of the International Linear Algebra Society (ILAS,
formerly IMG), we invite you to participate in the Society's
Inaugural Conference to be held August 12-15, 1989, at Brigham Young
University in Provo, Utah, USA. This will be a general international
meeting open to all with an interest in matrix theory. There will be
special concentration on nonnegative matrices and related topics.

Accommodation is available for up to 5 nights (Aug. 11/12 through
15/16) in on-campus dormitories and a meal plan is available in an
on-campus cafeteria on Aug. 12,14,15 (the meal plan includes no meals
on Sunday). The joint cost of accommodation and meals is $74.90
double occupancy (you may wish to select your roommate).
Alternatively accommodation and meals may be purchased separately.
The cost of a dormitory room is $10 per night double occupancy. For
those wishing to stay off campus, the 3-day meal package is $31.20,
or for the same package excluding breakfast $23.25. Single meals may
also be purchased at the cafeteria.

Dormitory space is limited and will be assigned in the order that
requests are received once invited speakers have been accomodated. If
you would prefer single occupancy, you may so indicate on the housing
form. Requests for single occupancy will be granted later if space
is available.

On-campus accomodation and meals are of high quality for an
academic institution. Please note that some regulations of religious
origin govern residence in BYU dormitories, such as prohibition of
alcoholic beverages and smoking. Coffee or tea are not served on

Lodging and meals are availbale off-campus within walking
distance. Please indicate on the registration form if you would like
information on off-campus housing.

There will be no registration fee. An optional luncheon buffet
(cost $15) and informal Sunday afternoon mountain outing are
scheduled for August 13 at a local resort.

Provo is located about 50 miles south of Salt Lake City. Salt Lake
International Airport is well serviced by most major US airlines, and
reasonably priced limousine service is readily available to and from
Provo (information will be sent to those who register). Salt Lake
City is also serviced by Amtrak. Within easy driving distance from
Provo (less than one day) lie many of the spectacular attractions of
the Rocky Mountain West.

We wish to encourage contributed 15-20 minute talks, subject to
the unavoidable limitations of space and time. Please let us know if
you wish to give such a talk. We shall also have some invited 30-40
minute talks. More details on the program will be available at a
later stage.

A special issue of Linear Algebra and its Applications will be
devoted to the meeting. This issue will contain only papers that meet
the publication standards of the journal, and that will be approved
by normal refereeing procedure. Papers should be submitted in
triplicate by November 1989 to one of the special editors of this
issue, who are Wayne Barrett, Daniel Hershkowitz, and Donald

We would appreciate it if you could let us know by April 30 if you
are planning to participate. Please return the enclosed registration
form to James R. Weaver (ILAS treasurer), and the enclosed
housing/mealplan form to the Office of General Services at Brigham
Young University. If you need further information, please contact
Wayne Barrett (mailing address on registration form, or email
address: barrettw@byuvax.bitnet).

We very much hope that you can participate in this Inaugural
Conference, as you presence will help to make it a success. We shall
try to make it worthwhile and enjoyable for you and look forward to
seeing you there.

We also invite you to become a member of the International Linear
Algebra Society. The annual membership fee is $12. However, as we
recognize that some potential members may have difficulties in paying
the fee, we shall gladly waive it upon request. Dues paid in 1989
also cover 1990, though a voluntary contribution of $12 to cover the
second year will be greatly appreciated. Thereafter the fee will be
annual. Note that you may attend the meeting without joining ILAS,
and we hope you will join ILAS even if you cannot attend the meeting.
You can use the enclosed conference form to indicate your intentions.

Brigham Young University Standards:

Brigham Young University was founded and still operates on
principles which are set forth by the Church of Jesus Christ of
Latter-day Saints. From these principles, a set of standards has
been established which make this institution unique. BYU guests are
asked to help maintain these standards which include abstinence from
alcohol, tobacco, illegal drugs, coffee, and tea, and the observance
of high moral standards. We reserve the right to request those not
honoring these standards to leave our facilities .

The Organizing Committee

Wayne Barrett Daniel Hershkowitz Charles Johnson
Hans Schneider Robert Thompson


Brigham Young University, Provo, Utah, U.S.A.
August 12 -15, 1989


Please return this form by April 30 to:

James R. Weaver
Department of Mathematics and Statistics
The University of West Florida
11000 University Parkway
Pensacola, Florida 32514-5751


You may write one check for the total amount.






I plan to attend the ILAS Inaugural Conference.

I don't plan to attend the ILAS Inaugural Conference.


I have returned the Housing form to BYU

I have not returned the Housing form.

Please send information on off-campus housing.

3. TALK:

I wish to give a contributed talk.
Title and abstract, typed on one page only, should be
sent by July 1 to

Wayne Barrett
Department of Mathematics
Brigham Young University
Provo, Utah 84602


I plan to attend the luncheon buffet on August 13.


I wish to become a member of ILAS.

I wish to become a member of ILAS.
Please waive my membership fee.


Luncheon buffet($15)

ILAS membership($12)


From: Jack Dongarra <>
Date: Wed, 22 Mar 89 07:31:57 CST
Subject: Argonne Wilkinson Fellow Named


L. Magnus Ewerbring of Cornell University has been named the 1989-90
Wilkinson Fellow in Computational Mathematics. The fellowship is awarded
by the Mathematics and Computer Science Division at Argonne National Laboratory
to a young scientist actively engaged in computational mathematics and parallel
computing research. Ewerbring will join the Mathematics and Computer Science
Division for a one-year term beginning in September 1989.

Ewerbring will receive a Ph.D. degree from Cornell University in August 1989.
For his thesis, he has derived generalizations of the singular value
decomposition that have important applications in canonical correlations and
are well suited for parallel machines. In addition to conducting his doctoral
research, he has worked at Thinking Machines Corp. developing code for linear
algebra routines on the massively parallel Connection Machine. As part of his
research there, Ewerbring devised techniques for ensuring that data are
efficiently mapped onto processors, realizing a savings in computation time of
up to 33 percent.

Currently, Ewerbring is a Graduate Fellow of the Mathematical Sciences
Institute at Cornell University.

The Wilkinson Fellowship was created by Argonne's Mathematics and Computer
Science Division in memory of Dr. James Hardy Wilkinson, F.R.S., who for
many years acted as a consultant and guiding spirit for such efforts as the
EISPACK and LINPACK projects. The fellowship is intended to assist a young
scientist who is actively engaged in state-of-the-art research in computational
mathematics, numerical linear algebra, and parallel computing.

Further information about the fellowship can be obtained from Jack Dongarra;
Argonne National Laboratory, Argonne, Illinois 60439;


From: John Lewis <>
Date: Wed, 22 Mar 89 07:55:58 PST
Subject: Program for SIAM Symposium on Sparse Matrices

MAY 22-24, 1989

The program for the SIAM Symposium on Sparse Matrices is attached.
Further information on the meeting can be obtained from SIAM
at `' or from John Lewis at `na.lewis...'.



Talks selected for extended presentations are given in pairs, each
talk consisting of a 40 minute presentation and a five minute
question period. Extended presentations will be given in the
Longhouse Ballroom.

Formal workshop sessions comprise five or six standard presentations,
each 15 minutes followed by a five minute question period.
Prescheduled workshop sessions will be given in the forward part of
the Ballroom (rooms B and C) and in the Cedar Tree Room.

Facilities will be provided for participants to organize their own
informal workshops to extend the discussions of the formal workshops
or to address topics not otherwise addressed in the formal
presentations. The Sunset Suite will be available at all times for
scheduling small impromptu workshops. The Cedar Tree Room will be
available during the extended presentations, and the rear part of the
Ballroom (room A) can be used for additional parallel workshops
during formal workshop sessions. These rooms will be reserved on a
first-come first-serve sign-up basis.


Sunday, May 21

8:00 - 10:00 Reception and Beer Party (Sunset Suite)


Monday, May 22

8:30 - 10:00 J. Grcar, Operator Coefficient Iterations
C.-C. Kuo, C. Tong and T. Chan, Multilevel Filtering (MF)
Preconditioners for Elliptic Problems
10:00 - 10:30 coffee
10:30 - 12:00 C. Ashcraft, Exploiting Structure in Sparse Matrix
Computations: The Domain/Segment/Separator Model
P. Amestoy and I. Duff, Efficient and Portable
Implementation of a Multifrontal Method on a range of
MIMD Computers
12:00 - 2:00 lunch
2:00 - 4:00 workshops: Iterative Methods for General Systems
Least Squares Problems
4:00 - 4:30 coffee
4:30 - 6:00 B. Parlett and H. Chen, Damped Oscillations and Hermitian
A. Ruhe, How to use Spectral Transformation on Sparse
Nonlinear and Nonsymmetric Eigenvalue Problems
6:00 - 8:00 dinner
8:00 - 10:00 workshops: Sparse Matrix Standards: Sparse BLAS2 and Beyond
Engineering Applications


Tuesday, May 23

8:30 - 10:00 E. Ng, A Comparison of Some Methods for Solving Sparse
Nonsymmetric Linear Systems
T. Davis and P-C Yew, A Stable Parallel Algorithm for
General Unsymmetric Sparse LU Factorization
10:00 - 10:30 coffee
10:30 - 12:00 M. Arioli, J. Demmel and I. Duff, Condition Numbers and
Backward Error Analysis in Solving Sparse Systems
D. Gay and M. Wright, Remedying Normal-Equations Failures in
Interior-Point Algorithms for LP
12:00 - 2:00 lunch
2:00 - 4:00 workshops: Implementation of General Direct Solvers
Eigenvalue Problems
4:00 - 4:30 coffee
4:30 - 6:00 J. Lewis, B. Peyton and A. Pothen, A Fast Algorithm for
Reordering Sparse Matrices for Parallel Factorization
A. Pothen and H. Simon, Partitioning Sparse Matrices with
Eigenvectors of Graphs
6:00 - 8:00 clambake
8:00 - 10:00 workshops: Reordering for Sparse Cholesky Factorization
Iterative Algorithms for Symmetric Systems


Wednesday, May 24

8:30 - 10:00 C. Ashcraft, S. Eisenstat, J. Liu and A. Sherman, Three
Distributed Sparse Factorization Algorithms
J. Gilbert and R. Schreiber, Highly Parallel Sparse Cholesky
10:00 - 10:30 coffee
10:30 - 11:30 workshops: Tools for Sparse Matrix Computations
Parallel Solution of Triangular Systems
11:30 - 1:15 lunch
1:15 - 3:15 workshops: Implementation of Sparse Cholesky Factorization
Reordering for Sparse LU Factorization
3:15 - 3:30 coffee
3:30 - 5:00 R. Freund, Conjugate Gradient Type Methods for Linear
Systems with Complex Coefficient Matrices
S. Ashby, Adaptive Polynomial Preconditioning for Hermitian
Linear Systems
5:00 - 7:00 impromptu workshops / nature walk
7:00 - 8:00 Stragglers Buffet
8:00 - 10:00 Informal Oregon Wine Tasting (Sunset Suite)



Monday Afternoon

Iterative Methods for General Systems:
T. Chan, Fourier Analysis of Blended Incomplete Factorization
R. Freund and Y. Saad, A Comparison of Polynomial Based Iterative
Methods for Large Nonsymmetric Linear Systems
A. Sameh and Z. Zlatev, A Robust Parallel Linear System Solver
H. Elman, Block Iterative Methods for Cyclically Reduced Elliptic
A. Baker, W. Noronha and E. Wachspress, Consistent Sparse
Factorization of Elliptic Difference Equations
W. Tang, Relief from the Pain of Overlap --- Generalized Schwarz

Least Squares Problems:
D. O'Leary, On Iteratively Reweighted Linear Least Squares Problems
P. Raghavan and A. Pothen, Parallel Orthogonal Factorization
E. Chu and A. George, Parallel Orthogonal Decomposition of Large
Sparse Matrices
C. Johnson, D. Olesky and P. vandenDriessche, Sparsity Analysis for
the QR Factorization
J. Barlow, The Accurate Solution of Sparse Weighted and Equality
Constrained Least Squares Problems Using a Static Data Structure

Monday Evening

Engineering Applications:
A. Coon and M.Stadtherr, Sparse Matrix Methods for the Parallel
Solution of Equation-Based Chemical Process Flowsheeting Matrices
R. Tewarson and J. Stephenson, Use of Sparse Matrix Techniques in
Fluid Flow Networks
B. Nour-Omid, M. Wright and R. Calalo, Partitioning Finite Element
Mesh for Concurrent Computing
P. Bjorstad, Iterative Substructure Algorithms in a Large Scale
Structural Analysis Code - Will it ever be Practical?
J. Braekhus, Design and Experience with an Algorithm for Parallel
Block Linear Algebra on Shared Memory Architecture
A. Hvidsten, On Parallelizing a very large Finite Element Structural
Analysis Program

Sparse Matrix Standards: Sparse BLAS2 and Beyond:
S. Ashby and M. Seager, A Proposed Standard for Iterative Linear
T. Oppe and D. Kincaid, Sparse Iterative BLAS
G. Radicatti, Vectorization and Storage Schemes for Irregular Sparse
I. Duff, Sparse BLAS2: the way forward or the way back
R. Grimes, BLAS for the Supernodal General Sparse and Multifrontal
R. Grimes, Sparse Matrix Vector Multiplication for the Lanczos
I. Duff, R. Grimes and J. Lewis, The Boeing-Harwell Sparse Matrix Test
Collection -- an update

Tuesday Afternoon

Implementation of General Direct Linear Equation Solvers:
S. Wright, Parallel Solvers for General Banded Systems
G.-C. Yang, DSpack: A Direct Sparse Matrix Software Package for
Shared-Memory Parallel Machines
I. Duff and J. Reid, MA48 - A New Package for Solving Sparse
Unsymmetric Sets of Linear Equations
Y-A Fan, A. Horvath, J. Li, D. Neaderhouser and P. Smith, A General
Sparse Matrix Solver
U. Suhl, L. Aittoniemi and J. Su, Computing LU-Factorizations for
Large Sparse General Matrices
F. Gustavson, Aspects of Dense Sparse LU Factorizations for Vector

Eigenvalue Problems:
J. Barlow and J. Demmel, Computing Accurate Eigensystems of Scaled
Diagonally Dominant Matrices
R. Morgan, Computing Interior Eigenvalues of Large Matrices
J. Cullum and R. Willoughby, A Shift and Invert Strategy for Lanczos
R. Pantazis and D. Szyld, Parallel Algorithms for the Banded Symmetric
Eigenvalue Problem Ax = lambda Bx
K. Gates, Efficient Eigenvalue Solvers for a Hypercube Multiprocessor

Tuesday Evening

Reordering for Sparse Cholesky Factorization:
J. Grcar, Matrix Stretching
H. Simon, A Parallel Iterative Algorithm for Envelope Reduction
A. Yeremin, Multilevel Cross Merging Algorithms for High Order Finite
Element Problems
B. Peyton, A Tie-Breaking Scheme for the Minimum Degree Algorithm
E. Zmijewski, Communication-Reducing Nested Dissection Orderings for
Parallel Sparse Cholesky Factorization
F.Alvarado, D. Yu and R. Betancourt, Ordering Schemes for Partitioned
Sparse Inverses

Iterative Algorithms for Symmetric Systems:
A. Greenbaum and G. Rodrigue, Optimal Preconditioners of a Given
Sparsity Pattern
J. Cosgrove, J. Diaz and A. Griewank, Approximate Inverse
Preconditionings for Sparse Linear Systems
A. Ramage and A. Wathen, On Element Preconditioning for Galerkin
Finite Element Equations
P. Frederickson and H. Simon, Totally Parallel Multilevel Algorithms
E. Kaasschieter, A General Finite Element Preconditioning for The
Conjugate Gradient Method
G.-Y. Lei, Preconditioned CG Methods Based on Ordering and Gaussian

Wednesday Morning

Tools for Sparse Matrix Computations:
Y. Saad, SparsKit: a basic tool kit for sparse matrix computations
Y. Saad and H. Wijshoff, A Comparative Study of the CRAY Family of
Supercomputers using a Sparse Benchmark Package
F. Alvarado, The Sparse Matrix Manipulation System

Parallel Solution of Triangular Systems:
S. Hammond and R. Schreiber, Efficient ICCG on a Shared Memory
Parallel Processor
J. Saltz, Solution of Sparse Triangular Systems on a Range of Parallel
R. Bisseling, Parallel Solution of Sparse Triangular Systems on a Mesh
of Transputers

Wednesday Afternoon

Implementation of Sparse Cholesky Factorization:
J. Liu, Sparse Matrix Factorization by Rows
C. Bischof, J. Lewis and D. Pierce, An Incremental Condition Estimator
for Sparse Triangular Matrices and Applications
G. Geist and E. Ng, A Partitioning Strategy for Sparse Matrix
Factorization on Multiprocessors
H. Simon, P. Vu and C. Yang, Sparse Matrix Factorization at 1.68
D. Warner, The Clique-Tree Algorithm and Its Implications for
Parallel-Vector Architectures
P. Sadayappan, Distributed Sparse Factorization of Circuit Matrices
via Recursive E-tree Partitioning

Reordering for Sparse LU Factorization:
P. Aitchison, Tearing and Sparse Matrix Computations
M. Bravo, C. Maulino and O. Ordaz, Quotient Bipartite Graph Model in
the Solution of AX = B
S. Buitrago, O. Jimenez and C. Maulino, Ordering Techniques for Sparse
Linear Systems arising in Reservoir Simulation
C. Johnson, Principal Submatrices and Structure of Sparse Matrices
D. Wise and P. Beckman, Selecting Pivots under Quadtree Matrix
E. Ganuza, An Implementation in Microcomputers of the Lexicografic


From: David Levine <>
Date: Thu, 23 Mar 89 11:25:43 CST
Subject: Argonne Parallel Programming Class

Argonne National Laboratory has set up the Advanced Computing Research
Facility (ACRF) for the study of parallel computing. To encourage the
use of the ACRF, Argonne offers classes on parallel computing to
familiarize potential users with the ACRF multiprocessors and parallel
programming in general. The next class will be held May 3-5, 1989.
Topics to be covered include:

1) Parallelizing compilers.
2) The Monitor and Schedule packages for portable parallel programming.
3) Hypercube programming.
4) DAP Programming.
5) Connection Machine Programming.

A portion of the third day will be devoted to each attendee's particular
project. The format of the course is alternating lectures and hands-on
work with the parallel computers in the ACRF. At its completion participants
will have written and run programs on each machine, and should be familiar
with the ACRF environment. Fortran will be emphasized as the primary
programming language. Knowledge of Fortran and Unix will be assumed.

Parallel computers currently in the ACRF are:

4-processor Ardent Titan
8-processor Alliant FX/8
16-processor Intel iPSC-VX hypercube
20-processor Encore Multimax
24-processor Sequent Balance 21000
32-processor Intel iPSC hypercube
1024-processor Active Memory Technology DAP
16384-processor Thinking Machines CM-2

Those interested in the classes should contact

Teri Huml
Mathematics and Computer Science Division
Argonne National Laboratory
Argonne, IL 60439-4844
(312) 972-7163

There will be a $25.00 registration fee per person for universities,
federal laboratories and government organizations and $100.00 for
industrial corporations.


From: E. C. Gartland <>
Date: Thu, 23 Mar 89 18:40:34 EST
Subject: Varga Conference, Final Announcement

A Conference On


in honor of Richard S. Varga
on the occasion of his 60th birthday

March 30, 31, and April 1, 1989

Kent State University
Kent, Ohio USA

Thursday AM:
G. Birkhoff, "Some Current Questions on Solving Elliptic Problems."
L.A. Hageman, "An Eigenvalue Bound for Doubly Cyclic Matrices."
P.G. Ciarlet, "A New Class of Variational Problems Arising in the
Modeling of Elastic Multi-Structures."
L.N. Trefethen, "Non-Normal Matrices and Approximate Eigenvalues."
Thursday PM:
J.W. Jerome, "Hierarchical Semiconductor Modeling: Analytical Results
for Discretization and Approximation."
G.G. Lorentz, "Bivariate Interpolation."
L.L. Schumaker, "On Multivariate Splines."
Friday AM:
R.J. Plemmons, "Substructuring and Nullspace Methods for Equilibrium
W.C. Rheinboldt, "On a Computational Method for the Second Fundamental
Tensor and its Application to Bifurcation Problems."
T.J. Rivlin, "Some Algebraic Aspects of the Chebyshev Polynomials."
A. Sharma, "Equiconvergence of Some Complex Interpolatory
J. Szabados, "Fine and Rough Theory for the Derivatives of Lagrange
Friday PM:
M.H. Gutknecht, "Modified Moments for Nonpositive Weight Functions."
H. Berens, "A Globally Lipschitz-Continuous Selection of the Metric
Projection in Matrix Approximation."
Y.A. Kuznetsov, "Matrix Iterative Analysis in Subspaces."
Saturday AM:
G.L. Csordas, "Convexity and the Riemann Hypothesis."
D. Gaier, "The Bieberbach Polynomials in Conformal Mapping."
W. Gautschi, "Vandermonde Matrices on the Circle."
Cai D.-Y., "Structural Singular Values of Matrices."
Saturday PM:
W. Niethammer, "Results from Approximation Theory Applied to Problems
in Numerical Linear Algebra."
E.B. Saff, "Weighted Analogues of Capacity, Transfinite Diameter,
and Chebyshev Constants."

In addition, there will be 30 contributed papers presented in parallel
sessions. All talks will be in Henderson Hall on the Kent State University

Thursday, 5:00--7:00 p.m., Reception (KSU Student Center).
Friday, 7:00 p.m., Conference Banquet (KSU Student Center).
Saturday, 6:30--7:30 p.m., Recital (Per Enflo, Ludwig Recital Hall).
8:00 p.m., Reception hosted by Prof. and Mrs. Varga (Twin Lakes
Country Club).

The conference is being sponsored by Kent State University, the Department
of Mathematical Sciences and the Institute for Computational Mathematics.
It is being co-sponsored by the Society for Industrial and Applied Mathematics,
and it has the endorsement of the International Mathematical Union. External
support is being provided by the Air Force Office of Scientific Research,
The U.S. Department of Energy, and the National Science Foundation, with
additional funding by the Central States Universities, Inc., and the Kent State
Research Council and Office for Institutional Advancement.

INFORMATION: E.C. Gartland, Jr. (Varga Conference)
Department of Mathematical Sciences
Kent State University
Kent, OH 44242 USA



From: Boleslaw Szymanski <>
Date: Fri, 24 Mar 89 07:21:12 EST
Subject: Fifth Parallel Circus

Rensselaer Polytechnic Institute, Troy, NY, April 28-29, 1989

THEME: Parallel Numerical Algorithms, Programming Tools and Applications.

OBJECTIVE: The meeting is an informal gathering of researchers interested
in parallel processing. The intention is to discuss recent results in the
area and exchange ideas for future work. The atmosphere is casual. The
speakers are chosen at the beginning of the circus. To encourage discussion,
there are no formal proceedings. We expect that about 60 people will be
in attendance and therefore no parallel sessions are planned.

HISTORY: The circus has been held twice a year for two days duration, on
Fridays and Saturdays. The first Parallel Circus was held in May 1987 at
Yale University (chaired by Prof. M. Shultz), the second at Cornell University
in November 1987, (chaired by Prof. Van Loan), the third was organized
by V. Sonnad at IBM Kingston (chaired by Prof. G. Golub and M. Schultz),
and the fourth was held at Rutgers University in December 1988 (chaired by
Prof. G. Golub and Prof. A. Gerasoulis).

PLACE: The Fifth Parallel Circus is being organized by Rensselaer Polytechnic
Institute and will be held on the Rensselaer campus, Troy, New York
(chaired by G. Golub and M.Schulz and organized by Joseph Flaherty and Bolek
Szymanski). Troy is part of tri-city area of Albany-Schenectady-Troy located
at the center of New York State. It is easily accessible via plane (Albany
airport), train and automobile.

CONTACTS: If you wish to attend, please contact Joseph E. Flaherty or Bolek
Szymanski as soon as possible.
PHONES: 518-276-2714, or 518-276-8291,
E-MAIL:, or,
ADDRESS: Department of Computer Science
Rensselaer Polytechnic Institute
Troy, NY 12180-3590

If you wish to present your work at the meeting, please include the
title of your talk in your message.

We have reserved a block of rooms for attendees at the Super 8 Motel
for $36.88 a night (telephone: 518-274-8800). The Motel is located in
Troy within walking distance of the campus.

We hope that you will be able to attend and we look forward to seeing you at
the meeting.

Joesph Flaherty and Bolek Szymanski


From: Per Christian Hansen <>
Date: Fri, 24 Mar 89 08:58:37 PST
Subject: Danish Summer School in Supercomputing

The Danish Computing Centre for Research and Education (UNI-C),
The Technical University of Denmark (DTH) and
The Danish Research Academy

invites to

T H E 1 9 8 9 S U M M E R S C H O O L

Numerical methods. Applications in chemistry and seismic.

Monday 14th - Wednesday 23rd of August 1989

DTH, Building 305

UNI-C, DTH and The Danish Research Academy are pleased to announce the
1989 Summer School in applied numerical methods on parallel and vector
type computers. The summer school is financially supported by The
Danish Research Academy and the DP Capacity Board of The Danish Min-
istry for Education.

The school comprises six series of classes within chemical simulation,
quantum chemical calculations of electron orbits, seismic methods and
general numerical algorithms for vector and parallel computers. The
lectures will be given by international recognized researchers, and
provide an inspiring insight into the prospects and challenges of com-
puter applications of modern numerical methods.

Application workshops on afternoons and evenings include tutorials in
using UNI-C's computers, an Amdahl VP1100 vectorprocessor w/ 128 Mbyte
central memory and an Alliant FX/8. In addition there is an Intel
Hypercube, kindly lent by the Department of Computer Science at The
University of Copenhagen, and an Ardent Titan graphical supermini,
which is placed at our disposal from High Tech Systems, Ballerup.

Participants are requested to bring their own FORTRAN programs for the
exercises, and use this opportunity to install and optimize their ap-
plication program on one or more parallel type computers, guided and
instructed by the guest lecturers and UNI-C staff.

UNI-C is situated on the Technical University of Denmark campus in
Lyngby, a northern suburb of Copenhagen, 12 km from Central Copenhagen.
UNI-C was established by a merger of three major University Computing
Centres, Copenhagen, Aarhus and Lyngby to form one supercomputer centre
for Denmark. Besides the Amdahl VP1100 with 30 Gbytes of disk storage,
UNI-C has an IBM 3081, a UNISYS 1100/92, a CDC Cyber, an Alliant FX/8
and several VAX'es.

Guest professors:

Dr. Jeremy du Croz (JC)
N.A.G. Ltd.
Dr. du Croz will talk on how to provide efficient portable numerical
software for supercomputers. Particular topics include level 2 and 3
BLAS, applications in linear algebra and nonlinear problems, the
LAPACK project, FFT's, quadrature and random number generators.

Dr. Iain Duff (ID)
AERE, Harwell and CERFACS, France.
Dr. Duff will talk on the solution of large sparse systems of linear
equations, structure and factorisation.

Dr. David Fincham (DF)
University of Keele.
Dr. Fincham will talk on numerical methods in chemical modeling and

Dr. Bengt Fornberg (BF)
Exxon Research and Engineering Company.
Dr. Fornberg will talk on seismic modeling with special emphasis on
pseudospectral methods.

Dr. Michael T. Heath (MTH)
Oak Ridge National Laboratory, Tennessee, USA
Dr. Heath will talk on algorithms for (massively) parallel computers.

Dr. V.R. Saunders (VS)
SERC, Daresbury, England.
Dr. Saunders will give lectures on numerical methods in quantum chem-
ical calculations.

Workshops and tutorials in using the various summer-school computers
will be headed by UNI-C staff.


The summer school is open to Danish, Nordic and International post
graduate students. Applications from other students, post doctoral
students and researchers are welcome, and applicants will be selected
from those who are actively working on projects that are appropriate
for parallel and vector type computing. Enrollment is limited to 40
participants. We expect 20 Danish, 10 Nordic and 10 delegates from the
international research community.

The registration fee is DKR 3000, and covers lunch and lodging at near-
by student recidence. Participants wishing to stay at more luxury or
tourist hotels must pay their own accomodation expenses. The partici-
pants may apply for funding of traveling and lodging expenses. The sum-
mer school is free of charge for Danish and Nordic participants.

Persons attending the summer school will be expected to have some expe-
rience in scientific and numerical modeling on computers. Preferably,
they should bring FORTRAN code which represents work in progress. The
UNI-C staff will provide assistance in migrating code and data to the
summer school computers. The participants are expected to improve this
code during the workshop sessions assisted by guest professors, UNI-C
staff and co-participants.

For further information on the 1989 Summer School please contact:

Mrs. Mette Soeborg
Manager, Education and Training
UNI-C, Vermundsgade 5
DK-2100 Copenhagen O
Telephone: +45 1 82 83 55
Telefax: +45 2 93 02 20

or Jorgen Moth


From: Gene H. Golub 415/723-3124 <>
Date: Tue, 21 Mar 1989 15:07:46 PST
Subject: Additions/Changes to NA-net

Here is a list of the changes and additions in NA-net since late November.
== Gene Golub



End of NA Digest