Subject: NA Digest, V. 94, # 16 NA Digest Sunday, April 17, 1994 Volume 94 : Issue 16 Today's Editor: Cleve Moler The MathWorks, Inc. moler@mathworks.com Today's Topics: 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 Submissions for NA Digest: Mail to na.digest@na-net.ornl.gov. Information about NA-NET: Mail to na.help@na-net.ornl.gov. ------------------------------------------------------- From: Scott B. Baden 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 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 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 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 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 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 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 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 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 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 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 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 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 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 ************************** -------