Send mail to: mgnet@cs.yale.edu for the digests mgnet-requests@cs.yale.edu for comments or help 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 Today's editor: Craig Douglas (douglas-craig@cs.yale.edu) Volume 11, Numbers 10+11 (approximately November 30, 2001) Today's topics: 9-11 Slowness Chair position announcement Book Software/Paper on Coarse Grid Construction Query on Coupled Elliptic PDE's An Improved Multigrid Method for Euler Equations CMMSE 2002 Addition to MG-Net Link list GAMM Seminar 2002 in Leipzig GAMM Seminar on Microstructures, Vienna 01/2002 Current and Future Trends in Numerical PDE's CFP: IPDPS-PDSECA-02 ------------------------------------------------------- Date: Fri, 30 Nov 2001 15:34:12 -0500 (EST) From: Craig Douglas Subject: 9-11 Slowness Life has certainly changed quite a bit since 9-11. I did not teach this term, so I had a lot of plans. Almost all of them changed or were cancelled due to being stuck somewhere too long. I know of many conferences that were cancelled, postponed, or moved up. In a colloquium series at Kentucky, we had many speakers decide they were too scared to fly through the end of November. I know these experiences are far from unique. How has 9-11 affected MGNet? Well, the number of contributions has dropped dramatically. How can you solve this temporary problem? Contribute something or influence one of your students or colleagues do so. December is traditionally a slow month for MGNet. If you have a code on MGNet, this is a great month to update it. ------------------------------------------------------- Date: Mon, 22 Oct 2001 05:27:39 -0600 (MDT) From: Bill Briggs Subject: Chair position announcement Announcement for Mathematics Department Chair Position University of Colorado at Denver October 11, 2001 The Mathematics Department at the University of Colorado at Denver invites applications and nominations for the positions of Professor and Chair; the appointments begin on July 1, 2002. The faculty has 22 full-time members whose research and teaching cover a wide range of areas: computational and engineering mathematics; discrete mathematics, finite geometry, and combinatorics; operations research and optimization; and probability and statistics. The Department is in the third year of a five-year Center of Excellence grant from the State, the most generously funded award that the State confers on academic programs. With B.S., M.S, and Ph.D. programs, the Department is also a major participant in the Center for Computational Mathematics and the newly created Center for Computational Biology. EEO/M/W/D/V. Colorado Open Records Act applies. For details see http://www-math.cudenver.edu/chair.html Bill Briggs 303-556-4809 (office) Mathematics Department, Box 170 303-556-8550 (fax) University of Colorado at Denver P.O. Box 173364 Denver, CO 80217-3364 http://www-math.cudenver.edu/~wbriggs ------------------------------------------------------- Date: Thu, 04 Oct 2001 09:52:19 -0600 From: Adolfy Hoisie Subject: Book Here's a book that could be of interest to many readers of mgnet. http://www.ec-securehost.com/SIAM/SE12.html Regards, Adolfy ------------------------------------------------------- Date: Thu, 6 Dec 2001 09:56:00 -0600 (CST) From: Irene Moulitsas Subject: Software/Paper on Coarse Grid Construction ParMGridGen-1.0 We are pleased to announce the availability of ParMGridGen-1.0 from Irene Moulitsas and George Karypis. ParMGridGen-1.0 is a highly-optimized serial and parallel library for obtaining a sequence of successive coarse grids that are well-suited for geometric multigrid methods. The quality of the elements of the coarse grids is optimized using a multilevel framework. The parallel library is based on MPI and is portable to a wide-range of architectures. Additional information about the functionality provided by the library and instructions on how to download it can be found at http://www.cs.umn.edu/~moulitsa/software.html I would also like to submit our package and related paper to your collection in MGNET. Irene Moulitsas http://www-users.cs.umn.edu/~moulitsa Scientific Computation Program University Of Minnesota Editor's Note: Neat stuff. See in http://www.mgnet.org/mgnet-codes.html. ------------- Multilevel Algorithms for Generating Coarse Grids for Multigrid Methods Irene Moulitsas and George Karypis University of Minnesota Department of Computer Science / Army HPC Research Center Minneapolis, MN 55455 {moulitsa,karypis}@cs.umn.edu Abstract Geometric Multigrid methods have gained widespread acceptance for solving large systems of linear equations, especially for structured grids. One of the challenges in successfully extending these methods to unstructured grids is the problem of generating an appropriate set of coarse grids. The focus of this paper is the development of robust algorithms, both serial and parallel, for generating a sequence of coarse grids from the original unstructured grid. Our algorithms treat the problem of coarse grid construction as an optimization problem that tries to optimize the overall quality of the result- ing fused elements. We solve this problem using the multilevel paradigm that has been very successful in solving the related grid/graph partitioning problem. The parallel formulation of our algorithm incurs a very small communicationoverhead, achieves high degree of concurrency, and maintains the high quality of the coarse grids obtained by the serial algorithm. Editor's Note: See in http://www.mgnet.org/mgnet-papers.html. ------------- ------------------------------------------------------- Date: Wed, 14 Nov 2001 15:14:33 -0500 From: Lev Tarasoff Subject: Query on Coupled Elliptic PDE's I have a set of 2 coupled 2D elliptic PDEs (with cross-derivatives). Is there anything akin to MUDPACK for coupled PDEs? I've searched GAIMS and NETLIB with no results. Lev Tarasoff - Dept of Physics, University of Toronto, 60 St. George St., Toronto, Ontario, CANADA, M5S 1A7 Tel (416)-946-3019 Fax (416)-978-8905 email: lev@atmosp.physics.utoronto.ca PS, FYI, the PDE's are the basis of a 2D ice-stream model. ------------------------------------------------------- Date: Wed, 3 Oct 2001 08:52:44 +0530 (IST) From: Dr J C Mandal Subject: An Improved Multigrid Method for Euler Equations Title: AN IMPROVED MULTIGRID METHOD FOR EULER EQUATIONS Authors: Mandal,J.C. and Rajput,H.S. Published in : Journal of Computational Mechanics, v.23, 5/6,pp.397-403,1999 Abstract: A new full approximation storage multigrid method has been developed for Euler equations. Instead of the usual approach of using frozen $\tau$ (the relative truncation error between fine and coarse grid levels), the relative truncation error is distributed over coarse grids based on the solution of a set of model equations at every time step. This allows for more number of sweeps at coarse grid level. As a result, the present multigrid method is able to accelerate the solution at much faster rate than the conventional multigrid method. A first order Steger and Warming flux vector splitting strategy has been used here for solving Euler equations as well as the model equations for $\tau$. Results are presented to demonstrate the ability of the present multigrid method. ------------------------------------------------------- Date: Fri, 19 Oct 2001 11:44:04 -0500 (CDT) From: Bruce A Wade Subject: CMMSE 2002 International Conference on Computational and Mathematical Methods in Science and Engineering (CMMSE 2002), Alicante, Spain. September 20 - 25, 2002. Topics: Celestial Mechanics, Computational Chemistry & Physics, Computational Engineering, Computational Mathematics, Computational Statistics, High Performance Computing, Industrial Mathematics, Mathematical Economics & Finance, Mathematical Models for the Information Society. Sponsors: Universidad de Alicante and the Center for Industrial Mathematics, University of Wisconsin-Milwaukee. Program: The conference aims to act as a unifying, cross-cutting, interdisciplinary catalyst where specialists can have exposure to others' fields as well as participate in special sessions at the forefront of their own specialties. The program consists of 1-hour plenary lectures that highlight major accomplishments, trends, and technical challenges in scientific computing in selected fields of research, special sessions with 25 minute invited talks, and a poster session. Call for papers: Researchers are invited to propose special sessions to the general chairs or submit papers for 25 minute talks or the poster session. Area Chairs: J.M. Ferrandiz, Univ. of Alicante, Spain & D.L. Richardson, Ohio State Univ. (Celestial Mechanics); E. Brandas, Univ. of Uppsala, Sweden & D. Truhlar, Univ. of Minnesota, USA & D. Belkic Karolinksa Inst., Sweden (Computational Chemistry & Physics); K.J. Bathe, MIT, USA & R. Lewis, Univ. of Wales, UK (Computational Engineering); J. Butcher, Univ. of Aukland, New Zealand & D.J. Higham, Univ. of Strathclyde, UK & T. Simos, Univ. of Xanti, Greece, & J. Xu, Penn. State. Univ., USA (Computational Mathematics); M.J. Bayarri, Univ. of Valencia, Spain (Computational Statistics); H. Arabnia, Univ. of Georgia, USA C.J.K. Tan, University of Western Ontario, Canada (High Performance Computing); C. Dawson, Univ. of Texas- Austin, USA (Industrial Mathematics); M. Ojeda, Univ. Almeria, Spain & P. Vojtás, Univ. Kosice, Eslovaquia (Mathematical Models for the Information Society). Information: www.ua.es/cmmse2002/ or www.uwm.edu/Dept/CIM General Chair: Prof. Jesus Vigo-Aguiar, Dept. of Applied Mathematics, University of Salamanca, Spain. jvigo@gugu.usal.es. Phone: +34+923+294400 Ext. 1537 Please keep in regular contact by email to the general chair (jvigo@usal.es) regarding your conference organizational activities. Co-Chair Prof. Bruce A. Wade, Dept. of Mathematical Sciences, University of Wisconsin- Milwaukee, USA. wade@uwm.edu. Phone: +1+414+229+5225 Important Dates: December 15, 2001: Declaration of participation and submission of abstract in standard LaTeX; January 30, 2002: Notice of acceptance. Early registration begins; March 1, 2002: End of early registration. Standard registration begins; June 15, 2002: Full paper submission. Maximum 10 A4 pages in standard LaTeX; July 30, 2002: Confirmation. Program is set; September 20-25, 2002: Conference (9/22 is a free day). Proceedings: Selected papers from the conference will be invited for several special issues in: J. of Computational and Applied Mathematics (www.elsevier.nl/inca/publications/) and J. of Computational Methods in the Sciences and Engineering (www.demon.co.uk/cambsci/jcmse.html) Conference Fees: (At this time 1 Euro = 0.9009 US Dollar) Early Registration (Before March 1, 2002): 400 Euros; Regular Registration: 450 Euros; Students: 250 Euros; Developing countries: 150 Euros. ------------------------------------------------------- Date: Tue, 06 Nov 2001 08:25:59 +0100 From: "Dr. Thomas Frank" Subject: Addition to MG-Net Link list Possibly you would like to add the link to our page to the link list of MGNet. We are a research group at the Chemnitz University of Technology, Germany (already present with some mathematicians in the list), concerned with parallel domain decomposition algorithms in combination with multigrid and in application to Eulerian-Lagrangian simulation of dispersed multiphase flows. You will find our homepage at: http://www.imech.tu-chemnitz.de The english version of our homepage is directly accessible under the link: http://www.imech.tu-chemnitz.de/index_e.html Dr. Thomas Frank Technische Universitaet Chemnitz Lieferanschrift: Fakultaet fuer Maschinenbau und Verfahrenstechnik Lehrstuhl f. Technische Thermodynamik Reichenhainer Str. 70 Forschungsgruppe Mehrphasenstroemungen D-Bau, Zi. 241 09107 Chemnitz 09126 Chemnitz Germany Germany Tel.: +49 (371) 531 46 43 Fax.: +49 (371) 531 46 44 email : frank@imech.tu-chemnitz.de URL : http://www.imech.tu-chemnitz.de/index.html Editor's Note: Anyone else want a link? I am happy to add them. Updates ------------- are useful, too. ------------------------------------------------------- Date: Tue, 6 Nov 2001 13:09:12 +0100 (MET) From: Juergen Koch Subject: GAMM Seminar 2002 in Leipzig Second announcement Dear colleagues, on January 24th to 26th, 2002, the 18th GAMM-Seminar Leipzig on Multigrid and related methods for optimization problems will be held at the Max-Planck-Institute for Mathematics in the Sciences. Chairmanship: Wolfgang Hackbusch (Leipzig) Michael Griebel (Uni Bonn, Germany) Location: Max-Planck-Institute for Mathematics in the Sciences, Leipzig, Germany Invited speakers: Nick Gould (Rutherford Appleton Laboratory, UK) Volker Schulz (Uni Trier, Germany) For more information, please visit our website http://www.mis.mpg.de/conferences/gamm/ With best regards, Juergen Koch Email: Juergen.Koch@mis.mpg.de Max-Planck-Institute for Mathematics in the Sciences Inselstraße 22-26 D-04103 Leipzig (Germany) Phone: +49 (0)341 9959 821 Fax: +49 (0)341 9959 999 Editor's Note: I am going. You should, too. With airfares so low and ------------- almost no restrictions, it is incredible where you can go for next to nothing. ------------------------------------------------------- Date: Wed, 14 Nov 2001 17:13:16 +0100 From: Dirk Praetorius Subject: GAMM Seminar on Microstructures, Vienna 01/2002 First Announcement of Workshop in 01/2002 Vienna GAMM Seminar on Microstructures January 18 till 20, 2002 at Vienna University of Technology, Austria, focuses on Computational Material Sciences, Micromagnetism, Microstructural Materials, involving Plasticity, Damage, Phase Transitions, Variational and Relaxation approaches. Chairmen C. Carstensen (Vienna), K. Hackl (Bochum), T. Schrefl (Vienna). Please register until Dec 01, 2001, by e-mail to ursula.schweigler@tuwien.ac.at and give title and abstract for your contributed talks. Details on a (moderate) fee for tea and coffee (to be paid in Euro after arrival) as well as on a meeting point on Tuesday night etc. will be fixed a.s.a.p. Please do not hesitate to contact us for any assistance on your travel arrangements or accommodation reservations in Vienna. The web site http://gamm.tuwien.ac.at/seminar2002/ maintains current and latest informations. Dirk Praetorius dirk@aurora.anum.tuwien.ac.at Institute for Applied Mathematics and Numerical Analysis (Inst. E 115) Vienna University of Technology Wiedner Hauptstrasse 8-10 (office DA 06 L 20, green section, 6. floor) TEL ++43 1 58801-115-36 FAX ++43 1 58801-115-99 http://www.anum.tuwien.ac.at/~dirk ------------------------------------------------------- Date: Mon, 8 Oct 2001 09:04:37 -0500 From: Todd Arbogast Subject: Current and Future Trends in Numerical PDE's Current and Future Trends in Numerical PDE's: Where is the field, and where is it going? A conference in honor of the 75th Birthday of Professor Jim Douglas, Jr., Friday and Saturday, Feb 8-9, 2002 Texas Institute for Computational and Applied Mathematics, The University of Texas at Austin, Austin, Texas, USA The field of computational PDE's is undergoing several paradigm shifts due to the advent of powerful computers. The goal of the conference is to gather different communities working in computational PDEs and expose participants to some of the main current trends in the field. This meeting will challenge its participants to confront the many aspects of the task of approximating the solutions of mathematically sophisticated models, and it will expose them to some of the tools developed in the different sub-communities of computational PDE's. For more information and to register, please see the web page http://www.ticam.utexas.edu/~arbogast/jim.html or contact the organizing committee Confirmed Speakers * Douglas N. Arnold, University of Minnesota * Ivo Babuska, University of Texas at Austin * Jerry L. Bona, University of Texas at Austin * James H. Bramble, Texas A&M University * Franco Brezzi, Universita di Pavia & Istituto di Analisi Numerica del C.N.R. * Luis A. Caffarelli, University of Texas at Austin * Craig C. Douglas, University of Kentucky and Yale University * Thomas Yizhao Hou, California Institute of Technology * Pierre-Louis Lions, University of Paris IX * Mitchell B. Luskin, School of Mathematics, University of Minnesota * Ricardo Nochetto, University of Maryland * J. Tinsley Oden, University of Texas at Austin * Chi-Wang Shu, Division of Applied Mathematics, Brown University * Mary F. Wheeler, University of Texas at Austin Scientific committee * Douglas N. Arnold, University of Minnesota * Franco Brezzi, Universita di Pavia & Istituto di Analisi Numerica del C.N.R. * Luis A. Caffarelli, University of Texas at Austin * Mitchell B. Luskin, University of Minnesota * J. Tinsley Oden, University of Texas at Austin * Mary F. Wheeler, University of Texas at Austin Organizing committee * Todd Arbogast , University of Texas at Austin * Irene Gamba , University of Texas at Austin ------------------------------------------------------- Date: Sat, 24 Nov 2001 23:43:17 -0400 From: "Laurence T. Yang" Subject: CFP: IPDPS-PDSECA-02 The 3rd Workshop on Parallel and Distributed Scientific and Engineering Computing with Applications (PDSECA-02) April 15-19, 2002 Marriott Marina, Fort Lauderdale, Florida in conjunction with The 16th International Parallel and Distributed Processing Symposium (IPDPS-2002) Scope and Interests: Parallel and distributed scientific and engineering computing has become a key technology which will play an important part in determining, or at least shaping, future research and development activities in many academic and industrial branches. This special workshop is to bring together computer scientists, applied mathematicians and researchers to present, discuss and exchange idea, results, work in progress and experience of research in the area of parallel and distributed computing for problems in science and engineering applications. Among the main topics (but not limited to) are: development of advanced parallel and distributed methods parallel and distributed computing techniques and codes, practical experiences using various supercomputers with software such as MPI, PVM, and High Performance Fortran, OpenMP, etc. applications to the following areas: computational fluid dynamics and mechanics material sciences space, weather, climate systems and global changes computational environment and energy systems computational ocean and earth sciences combustion system simulation computational chemistry computational physics bioinformatics and computational biology medical applications transportation systems simulations combinatorial and global optimization problems structural engineering computational electromagnetics computer graphics semiconductor technology, and electronic circuits and system design etc. Submission Information: Authors should send one copy of paper with experimental results in either PS or PDF format at most 20 pages to the workshop organizers ( lyang@stfx.ca or rauber@informatik.uni-halle.de or ruenger@informatik.tu-chemnitz.de ) via electronic mail or three copies via postal mail. Contributions will be reviewed by at least three reviewers from both Program Committee and external reviewers for relevance and technical contents on basis of papers. Accepted papers will be published by IEEE Computer Society Press as proceedings of the IPDPS workshops. Selected papers will be appeared on a special issue on a parallel computing journal and a Kluwer book on series of parallel and distributed computing. Further information about the conference proceedings and registration fee can be found by web sites: http://www.ipdps.org/ipdps2002 http://www.stfx.ca/people/lyang/activities/ipdps02-pdseca Important Deadlines: Paper submission Due: December 22, 2001 Notification of Acceptance January 13, 2002 Final camera-ready paper January 20, 2002 Workshop Organizers: Prof. Laurence T. Yang (chair) Department of Computer Science St.Francis Xavier University Antigonish, B2G 2W5, NS, Canada Email: lyang@stfx.ca Prof. Thomas Rauber(Co-chair) Institut fur Informatik Universit at Halle-Wittenberg Kurt-Mothes-Str.1 06120 Halle (Saale), Germany Email: rauber@informatik.uni-halle.de Prof. Gudula Runger (Co-chair) Institut fur Informatik Technische Universitat Chemnitz, Germany Email: ruenger@informatik.tu-chemnitz.de ------------------------------ End of MGNet Digest **************************