Send mail to:  mgnet@cs.yale.edu             for the digests or bakeoff
               mgnet-requests@cs.yale.edu    for comments or help
 
Anonymous ftp repository:  www.mgnet.org (128.163.209.19)
 
Current editor:  Craig Douglas douglas-craig@cs.yale.edu
 
the Subject field.  My real e-mail address is in the From field.

Anonymous ftp repository:    www.mgnet.org (128.163.209.19)

WWW Sites:  http://www.mgnet.org or
            http://casper.cs.yale.edu/mgnet/www/mgnet.html or
            http://www.cerfacs.fr/~douglas/mgnet.html or
            http://phase.hpcc.jp/mirrors/mgnet or
            http://www.tat.physik.uni-tuebingen.de/~mgnet

Editor:  Craig Douglas (douglas-craig@cs.yale.edu)

Associate editor: Gundolf Haase (gundolf.haase@uni-graz.at)

Volume 15, Number 10 (approximately October 31, 2005)
Volume 15, Number 11 (approximately November 30, 2005)

Today's topics:

     Number 12
     Important Dates
     Submitting a Preprint to MGNet (Oh et al)
     santafe Code
     Trilinos Release 6.0
     Is there a bug in Fishpack?
     Ninth Copper Mountain Conference on Iterative Methods
     BAIL 06 (Int. Conference on Boundary and Interior Layers)
     A.A. Markov Anniversary Meeting

This is a great place to let the world know about your results.  It is
highly rated for letting the world know about recent graduates' dissertations
and young reserachers' papers... and it is free and open source.

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

Date: Wed, 30 Nov 2005 10:23:24 -0400
From: Craig Douglas 
Subject: Number 12

There will be a volume 15, number 12 late this month. It will have something
of interest to algebraic multigrid (AMG) users at a minimum. This would be a
good time to contribute something to MGNet. I keep getting asked if multigrid
is still a going research area. I say, of course. More announcements, pointers
to results or papers or codes, etc. will help keep the field lively.

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

Date: Wed, 30 Nov 2005 10:22:21 -0400
From: Craig Douglas 
Subject: Important Dates

E-gads... There are a lot coming up.

Jan. 10  Copper Mountain student competition full papers (<= 10 pages)
Feb. 1   Copper Mountain author abstracts
Mar. 1   Copper Mountain early registration and hotel reservations
            See http://amath.colorado.edu/faculty/copper
            E-mail: Copper.conference@colorado.edu

Dec. 31  2006 SIAM George Polya Prize
Dec. 31  2006 SIAM W. T. and Idalia Reid Prize
Dec. 31  2006 SIAM SIAG/APDE Prize - deadline Dec. 31
?        2006 SIAG/LA Prize
?        2006 SIAM Student Paper Prize
            See http://www.siam.org/prizes/nominations.php
         Please address inquiries to:
            J. M. Littleton
            SIAM
            E-mail: littleton@siam.org
            Telephone: +1-215-382-9800 ext. 303
            Fax: +1-215-386-7999

Jan. 10  2006 SIAM Meeting Minisymposium proposals
Jan. 24  2006 SIAM Meeting Abstracts for all contributed and minisymposium
         presentations
            See http://www.siam.org/meetings/an06/index.php
            E-mail: meetings@siam.org

Jan. 9   A.A. Markov Anniversary Meeting Submissions
            See http://www.csc2.ncsu.edu/conferences/nsmc/
            E-mail: billy@csc.ncsu.edu and langvillea@cofc.edu

Dec. 16  BAIL 06 Abstracts and Minisymposia
            See http://www.math.uni-goettingen.de/bail/

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

Date: Tue, 22 Nov 2005 20:22:20 -0800
From: "Seungseok Oh" 
Subject: Submitting a Preprint to MGNet (Oh et al)

Multigrid Tomographic Inversion with Variable Resolution Data and Image Spaces
 
Seungseok Oh (1), Charles A. Bouman (2), and Kevin J. Webb (2) 
 
Abstract 

A multigrid inversion approach that uses variable resolutions of both data
space and image space is proposed.  Since computational complexity of inverse
problems typically increases with a larger number of unknown image pixels and
a larger number of measurements, the proposed algorithm further reduces the
computation relative to conventional multigrid approaches, which change only
the image space resolution at coarse scales.  The advantage is particularly
important for data-rich applications, where data resolutions may differ for
different scales.  Applications of the approach to Bayesian reconstruction
algorithms in transmission and emission tomography with a generalized Gaussian
Markov random field image prior are presented, both with a Poisson noise model
and with a quadratic data term.  Simulation results indicate that the proposed
multigrid approach results in significant improvement in convergence speed
compared to the fixed-grid iterative coordinate descent (ICD) method and a
multigrid method with fixed data resolution.
 
Index Terms 
Multigrid algorithms, multiresolution, inverse problems, image reconstruction,
computed tomography, emission tomography, transmission tomography
 
(1) Fujifilm Software (California), Inc., San Jose, CA, USA,
soh@fujifilmsoft.com

(2) School of Electrical and Computer Engineering, Purdue University, West
Lafayette, IN, USA, {bouman,webb}@ecn.purdue.edu

    Editor's Note: in http://www.mgnet.org/mgnet/papers/Oh-Bouman-Webb/tip06.pdf
    -------------

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Date: Mon, 24 Oct 2005 09:23:39 +0200
From: Alfio Borzi 
Subject: santafe Code

With your help, I would like to distribute a code for open-loop optimal
control of time-dependent reaction-diffusion systems.  The code is designed to
solve for tracking and terminal observation problems also in combination with
receding horizon techniques.  The code is written in FORTRAN (santafe.for;
santafe.dat is the input file), is public domain (therefore no guarantee) and
a detailed description will appear in the proceedings of the

    Second Sandia Workshop on PDE-Constrained Optimization:
    Toward Real-time and Online PDE-constrained Optimization
    May 19-21, 2004
    Bishop's Lodge, Santa Fe, New Mexico

    Workshop organizing committee:

    Larry Biegler, Omar Ghattas, Matthias Heinkenschloss,
    David Keyes, Bart van Bloemen Waanders.

For details see: http://www.cs.cmu.edu/~oghattas/pdeopt04.

Grazie mille e Salutissimi
Alfio

    Editor's Note: see http://www.mgnet.org/mgnet-codes-borzi.html
    -------------

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

Date: Wed, 14 Sep 2005 22:58:39 -0500
From: "Michael A Heroux" 
Subject: Trilinos Release 6.0

Release 6.0 of Trilinos is available for download at the Trilinos website.
This version has one new package, and major enhancements to most other
packages. Below is a brief set of release notes. More details can be found
at the Trilinos website. Please contact trilinos-help@software.sandia.gov if
you have any problems.

Links:

Main Trilinos website: http://software.sandia.gov/trilinos
Download link: http://software.sandia.gov/trilinos/downloads.html
Release 6.0 Notes:
http://software.sandia.gov/trilinos/release_6.0_notes.html
Tutorial: http://software.sandia.gov/trilinos/TrilinosTutorial.pdf

Brief release notes:

Overview:

Trilinos is a collection of compatible software packages that support
parallel linear algebra computations, solution of linear, non-linear and
eigen systems of equations and related capabilities. The majority of
packages are written in C++ using object-oriented techniques. All packages
are self-contained, with the Trilinos top layer providing a common
look-and-feel and infrastructure.

Packages:

The version 6.0 general release contains 18 packages: Amesos, Anasazi,
AztecOO, Didasko, Epetra, EpetraExt, Ifpack, Kokkos, Komplex, LOCA, ML,
New_Package, NOX, Pliris, PyTrilinos, Teuchos, Thyra, and Triutils.

The limited release contains an additional 9 packages that are available in
special situations by request. These are: Belos, Capo, Claps, Jpetra, Meros,
Rythmos, Tpetra, TSF, and TSFExtended.

In addition to many new features across most packages, Trilinos Release 6.0
contains one new package, Thyra.  This package represents our first general
release of an abstract interface to support generic programming.  Thyra
contains interfaces for basic linear algebra objects, a first linear solver
interface, and supporting software.  Furthermore, adapters for Amesos,
AztecOO, Epetra, Ifpack, ML, NOX and Teuchos provide a broad set of
functionality to users of Thyra.

A second major feature is the much improved design and implementation of
PyTrilinos.  PyTrilinos capabilities are now primarily distributed across
Trilinos packages (although critical common functionality is still in the
PyTrilinos package), so that Epetra, EpetraExt, Triutils, AztecOO, Amesos,
Ifpack, ML, LOCA, NOX and New_Package are accessible to Python applications.

PyTrilinos also supports parallel MPI execution without additional Python
modules.

Michael Heroux
Sandia National Laboratories
(320) 845-7695
maherou@sandia.gov

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

Date: Thu, 8 Dec 2005 17:13:43 +0530
From: "abhip" 
Subject: Is there a bug in Fishpack?

I am a new user of Fishpack, which I primarily intend to use to solve
Poisson's equations in cylindrical coordinates.  One surprising result I found
is that while using the routine "sepx4" if I took the no of grid points
greater than a particular value (say 2000,2000) (consequently making the
coordinate spacings smaller) the solution starts to diverge while it should
have converged more.  Is this a bug or a limitation in the code or am I wrong?
For small no of grid points the solutions are exact and the speed is awsome.

Also does anybody know of a double precision version of sepx4.

I would appreciate any help from anybody.

Thank you
Dr Abhijit Poddar. 
Visiting Research Associate
Satyen Bose national Centre for Basic Sciences

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

Date: Mon, 21 Nov 2005 08:16:03 -0700
From: Cathy Lee FRSC 
Subject: Ninth Copper Mountain Conference on Iterative Methods

ANNOUNCING:

Ninth Copper Mountain Conference on Iterative Methods
  April 2 - April 7, 2006
  Copper Mountain, Colorado, USA

ORGANIZED BY:

  The Center for Applied Scientific Computing, Lawrence Livermore Nat'l Lab
  University of Maryland
  Front Range Scientific Computations, Inc.
  The University of Colorado
In Cooperation With:

  The Society for Industrial and Applied Mathematics

TENATIVE SPONSORS:

  DOE, NSF, IBM, LANL, LLNL, Sandia

   THEMES:

Model Order Reduction
Multiscale and Imaging Problems
Nonlinear Solvers
Eigenvalue Methods

  Every effort will be made to encourage contributions from anyone whose
  interest lies in these important and rapidly evolving fields.

IMPORTANT FEATURE:

  STUDENT PAPER COMPETITION. Travel and lodging assistance will be awarded to
  students and new PhDs judged to have submitted the best research papers.

CONFERENCE DEADLINES:

  Student Papers Jan. 10, 2006
  Author Abstracts Feb. 1, 2006
  Early Registration March 2, 2006
  Guaranteed Lodging March 2, 2006

FURTHER INFORMATION:

Please access our web site at

  http://amath.colorado.edu/faculty/copper

or contact

  Cathy Lee
  FRSC
  1390 Claremont Drive
  Boulder, CO 80305    USA  303.554.1232
  Copper.conference@colorado.edu

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

Date: Fri, 2 Dec 2005 11:08:43 +0100 (CET)
From: Gerd Rapin 
Subject: BAIL 06 (Int. Conference on Boundary and Interior Layers)

International Conference on "Boundary and Interior Layers" (BAIL 2006)
Goettingen (Germany)

July 24th to July 28th, 2006

Deadline for Abstracts:
    December 16th, 2005

Deadline for Minisymposia:
    December 16th, 2005

Deadline for Early Registration:
    May 16th, 2006

Invited Speakers:
    * P. Houston, University of Nottingham, 
       Discontinuous Galerkin Finite Element Methods for CFD: A Posteriori 
       Error Estimation and Adaptivity
    * P. Huerre, Ecole Polytechnique, Paris,
       Dynamics of hot jets: a numerical and theoretical study  
    * M. Stynes, University College, Cork,
        Convection-diffusion problems, SDFEM/SUPG and a priori meshes  
    * W. Wall, Technical University of Munich,
        Variational Multiscale Methods for incompressible flows

Topics:
    * All aspects of computational and analytical methods for boundary and
      interior layers, and singular perturbation problems are welcome. Special
      emphasis is laid on the mathematical foundation of such methods.
    * Topics in fluid mechanics involving boundary and interior layers 
      are welcome, including flow modelling (stability,
      laminar-turbulent transition, turbulence, ...), interactive
      boundary layers, simulation of boundary layer in Navier-Stokes
      solvers, boundary layer perturbation (vortices, wall
      perturbations, ...), boundary layer receptivity and control.
    * More generally, topics in any field in which boundary layers and
      interior layers occur are welcome. In particular, multi-scale
      problems are in the scope of the meeting.

Web-site:
    http://www.math.uni-goettingen.de/bail/

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

Date: Mon, 31 Oct 2005 20:01:10 -0500
From: William Stewart 
Subject: A.A. Markov Anniversary Meeting

A.A. Markov Anniversary Meeting:  Call for Papers.
       http://www.csc2.ncsu.edu/conferences/nsmc/

An international conference in honor of the 150th anniversary of the
birth of A.A. Markov and the 100th anniversary of his work on chains
will be held June 12--14, 2006 at the College of Charleston, SC, USA.

In addition to regular sessons on research advances in the field,
special sessions will be devoted to a historical perspective of Markov
and his contemporaries and to the many important applications of Markov
chains in today's fast-paced world.

Authors are invited to submit research contributions on any aspect
of the specification, solution, and analysis of Markov chains.
Submitted papers should not exceed 20 single-spaced pages,
including title, abstract, figures, tables and references.
Papers should be submitted as a PDF file to both
      billy@csc.ncsu.edu     and   langvillea@cofc.edu

Important dates:
    Submission deadline:      January 9, 2006
    Acceptance notification:  March 6, 2006.
    Camera ready version:     April 3, 2006.

Organizers/Steering Committee:
    Ilse Ipsen,         NC State University.
    Amy N. Langville,   College of Charleston.
    Carl D. Meyer,      NC State University.
    Harry G. Perros,    NC State University.
    William J. Stewart, NC State University.
    Kishor S. Trivedi,  Duke University.

More complete information may be found at the conference webpage
       http://www.csc2.ncsu.edu/conferences/nsmc/

Dr. William J. Stewart
Professor of Computer Science
Box 8206                                    Tel: (919) 515-7824
North Carolina State University             Fax:  (919) 515-7896
Raleigh, NC 27695-8206, USA                 Email: billy@csc.ncsu.edu
http://www.csc.ncsu.edu/faculty/WStewart/

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

End of MGNet Digest
**************************