Subject: NA Digest, V. 92, # 24 NA Digest Thursday, June 18, 1992 Volume 92 : Issue 24 Today's Editor: Cleve Moler The MathWorks, Inc. moler@mathworks.com Today's Topics: Where are NATO Summer Conferences? Looking for Access to an Ada Compiler New Book on Parallel Numerical Algorithms GAO Report-"Patriot Missile Defence" Bibliography on Interior Point Methods Programs from Schiesser's Book Available Multigrid Short Course at University of Colorado at Denver NAGUA Workshop on Fortran 90 Mathematical Theory of Networks and Systems ERCIM Course on Large-Scale Scientific Parallel Computing Positions at Australian National University Position at University of New South Wales 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: Kamalini Ramdas Jain Date: Tue, 9 Jun 92 16:27 EDT Subject: Where are NATO Summer Conferences? I am trying to find out the topics and locations for any NATO sponsored student summer camps this summer. If you have information about these camps, I would appreciate it greatly if you could write to me at: ramdas61@wharton.upenn.edu Thank you, Kamalini Ramdas Jain RAMDAS61@WILMA.WHARTON.UPENN.EDU ------------------------------ From: John Prentice Date: Tue, 9 Jun 92 15:03:57 MDT Subject: Looking for Access to an Ada Compiler One of the projects I had hoped to undertake this summer was to learn Ada programming. However, somewhat to my amazement, I have been unable to find an Ada compiler on any of the computers I have access to, which includes two DoE labs and two DoD labs (so much for Ada being the workhorse of the DoD). There are also no Ada compilers available at this university, at least on any systems I have been able to find. So, I would like to pulse the community to see if anyone has a computer with Ada mounted on it and who would be willing to give me a guest account for a few months. I realize that na.net is a odd place for such a request, but it seemed like a reasonable place to start. John John K. Prentice Quetzal Computational Associates 3200 Carlisle N.E., Albuquerque, NM 87110-1664; 505-889-4543 john@aquarius.unm.edu -or- jkprent@cs.sandia.gov ------------------------------ From: Nick Higham Date: Fri, 12 Jun 92 12:24:52 BST Subject: New Book on Parallel Numerical Algorithms A book on parallel numerical algorithms that has just been published may be of interest to NA-Digest readers. It is by Len Freeman (Department of Mathematics, University of Manchester) and Chris Phillips (Computing Laboratory, University of Newcastle). In the preface the authors say ``The material covered by this book will be of relevance to final year undergraduate and postgraduate courses on parallel numerical algorithms given in departments of computer science, mathematics and engineering''. The details are, in the form of a BibTeX entry: @book{frph92, author = "T. L. Freeman and C. Phillips", title = "Parallel Numerical Algorithms", publisher = "Prentice Hall", address = "Hemel Hempstead, Hampshire", year = 1992, mynote = "ISBN 0-13-651597-5. Prentice Hall International Series in Computer Science, C. A. R. Hoare, Series Editor. Softback: \pounds 19.95 (UK), USA price to be announced." } --Nick Higham ------------------------------ From: Murli Gupta Date: Wed, 10 Jun 92 14:43:24 EDT Subject: GAO Report-"Patriot Missile Defence" A couple of weeks ago, David Keaton gave a brief description of the GAO report "Patriot Missile Defence: Software Problem Led to System Failure at Dhahran, Saudi Arabia". I acquired a copy of the report and found it to be very interesting from a numerical analysis perspective; many others seem to be interested in further details contained in the report. The report number is GAO/IMTEC-92-26 and is available from GAO at (202) 275-6241. Further details of the GAO Report The Patriot missile defence battery uses a 24 bit arithmatic which causes the representation of real time and velocities to incur roundoff errors; these errors became substantial when the patriot battery ran for 8 or more consecutive hours. As part of the search and targeting procedure, the Patriot radar system computes a "Range Gate" that is used to track and attack the target. As the calculations of real time and velocities incur roundoff errors, the range gate shifts by substantial margins, especially after 8 or more hours of continuous run. The following data on the effect of extended run time on patriot operatios from Appendix II of the report would be of interest to numerical analysts everywhere. Hours Real time Calculated Time Inaccuracy Approximate shift (seconds) (seconds) (seconds) in range gate (meters) 0 0 0 0 0 1 3600 3599.9966 .0034 7 8 28800 28799.9725 .0275 55 20a 72000 71999.9313 .0687 137 48 172800 172799.8352 .1648 330 72 259200 259199.7528 .2472 494 100b 360000 359999.6667 .3333* 687 a: continuous operation exceeding 20 hours-target outside range gate b: Alpha battery [at Dhahran] ran continuously for about 100 hours * corrected value [GAO report lists .3433] On February 21, 1991 the Patriot Project Office sent a message to all patriot sites stating that very long run times "could cause a shift in the range gate, resulting in the target being offset". However, the message did not specify "what constitutes very long run times. According to the Army officials, they presumed that the users would not run the batteries for such extended periods of time that the Patriot would fail to track targets. Therefore, they did not think that more detailed guidance was required". The air fields and seaports of Dhahran were protected by six Patriot batteries. Alpha battery was to protect the Dhahran air base. On February 25, 1991, Alpha battery had been in operation for over 100 consecutive hours. That's the day an incoming Scud struck an Army barracks and killed 28 American soldiers. On February 26, the next day, the modified software, which compensated for the inaccurated time calculation, arrived in Dhahran. ------------------------------ From: Eberhard Kranich Date: Fri, 12 Jun 92 14:47:54 +0200 Subject: Bibliography on Interior Point Methods In these days I'm rewriting and updating my bibliography on interior point methods for mathematical programming which can be accessed via NETLIB : send index from bib For the updating process I need some help : Please check the bibliography, only on your papers and talks, and if you miss reports or if citations are incorrect send the corrections via e-mail to me. According to the talks please send a crossreference list "talk -> report", because I believe that there exists an underlying report to each talk, differing only in title. In case you can help me I'm very much obliged to you. -- Dr. Eberhard Kranich FB Mathematics 7 Uni Wuppertal Gauss-str. 20 Room G14.13 D-W-5600 Wuppertal 1 Germany e-mail : puett@wmwap1.math.uni-wuppertal.de or na.kranich ------------------------------ From: W. E. Schiesser Date: Wed, 17 Jun 1992 12:12:56 -0500 (CDT) Subject: Programs from Schiesser's Book Available The programs in the book: "The Numerical Method of Lines Integration of Partial Differential Equations", Academic Press, San Diego, CA, ISBN: 0-12-624130-9 are available on a 3.5 inch, DOS-formatted, 1.44 mb diskette (Fortran source code). Send requests to: W. E. Schiesser Until August 15, 1992: SSC Laboratory, MS 4003 2550 Beckleymeade Avenue Dallas, TX 75237 USA (214) 708-4804 (fax) wes1@sscvx1.ssc.gov After August 15, 1992: Iacocca Hall, D307 Lehigh University 111 Research Drive Bethlehem, PA 18015 USA (215) 758-5297 (fax) wes1@lehigh.edu ------------------------------ From: Haiyan Liu Date: Tue, 9 Jun 92 9:26:15 MDT Subject: Multigrid Short Course at University of Colorado at Denver ANNOUNCEMENT The University of Colorado at Denver is sponsoring the Third Multigrid Short Course on campus from March 31 to April 4, 1993. The basic components of the course include . fundamental principles and algorithms . practical applications . software demonstration and distribution Suggestions about contents, arrangements, and other aspects of the course are encouraged. For example, people interested in having other topics included, or those interested in only attending part of the course (possibly for a reduced price), please indicate so. Such suggestions and comments should be sent to Chaoqun Liu either by e-mail at cliu@copper.colorado.edu or by regular mail at Chaoqun Liu Computational Mathematics Group Campus Box 170 University of Colorado at Denver P.O. Box 173364 Denver, CO 80217-3364 Following is the tentative program: MULTIGRID SHORT COURSE March 31 - April 4, 1993 Chairman : Chaoqun Liu Lecturers : Achi Brandt Williams Briggs Chaoqun Liu Steve McCormick John Ruge Monday - Tuesday Elementary Multigrid Tutorial, Basic Approach, Elliptic Equations, Adaptive Methods Wednesday - Thursday Computational Fluid Dynamics, Incompressible Navier-Stokes Equations, Compressible Flows, Grid Generation, Two-Phase Porous Media Flows, Flow Transition, Combustion Friday Multiscale Methods in Particle Simulation Monday-Friday Software Demonstration and Distribution The registration fee will be $475 ($175 for students), which will include refreshments, computer laboratory access, and materials. Also, a block of reduced-rate rooms will be arranged in the neighboring Executive Tower Inn. Please Contact Chaoqun Liu (phone (303)556-4811, fax (303)556-3377, e-mail cliu@copper.denver.colorado.edu). ------------------------------ From: Hans-Hermann Frese Date: Thu, 11 Jun 92 11:41:26 +0200 Subject: NAGUA Workshop on Fortran 90 NAGUA Workshop on Fortran 90 The future of Fortran here today Monday 22 June 1992 Hannover, Germany The Workshop is to be held on Monday 22 June 1992 at the Interconti Hotel in Hannover. "Fortran 90 through the eyes of a Fortran 77 Programmer" Wilhelm Gehrke, RRZN, University of Hannover "How NAG and its users will benefit from Fortran 90" John Reid, Rutherford Appleton Laboratory "Fortran 90 Compiler and Tools" Malcolm Cohen, NAG Limited "Designing a Fortran 90 Numerical Library" Jeremy Du Croz, NAG Limited For more information, contact: NAGUA Administrator, PO Box 426, OXFORD, United Kingdom OX2 8SD Fax: +44 865 310139. ------------------------------ From: Paul Van Dooren Date: Tue, 9 Jun 92 16:06:52 CDT Subject: Mathematical Theory of Networks and Systems First Announcement and Call for Papers INTERNATIONAL SYMPOSIUM ON THE MATHEMATICAL THEORY OF NETWORKS AND SYSTEMS 1993 August 2 - 6, 1993, Regensburg, Germany The International Symposium on the Mathematical Theory of Networks and Systems (MTNS) is held biannually since 1973. The symposium offers theoretical engineers, researchers and mathematicians in systems, control and circuit theory a platform to discuss recent developments, to exchange new ideas and to analyse trends for future research. It also provides them with an opportunity to establish and maintain contacts with colleagues. Topics of interest include mathematics for control, multivariable control, systems modelling, optimal control, filtering, robotics, VLSI, neural networks and control theoretic aspects of artificial intelligence. The scientific program of the symposium consists of plenary lectures by invited speakers, parallel lectures by invited speakers, mini courses, invited sessions and contributed lectures. Prospective authors should submit three copies of an unpublished paper in the English language by November 1, 1992, The length of the paper should not exceed 10 pages. The cover page of the paper should contain: title, author^s name, affiliation and address, fax-number, e-mail address, telephone number, an abstract and keywords. In the case of joint authorship, the first name mentioned will be used for all correspondence, unless otherwise requested. Proposals for invited sessions should also be submitted by November 1, 1992. An invited session normally comprises 3 - 5 lectures of 25 minutes duration, but other arrangements are possible. The proposal should contain the title of each lecture as well as the name, affiliation, address, fax-number, e-mail address and telephone number of each proposed speaker and of the organizer(s). In addition, a one page abstract of each lecture is required. Papers and proposals for invited sessions should be sent to MTNS 93, U. Helmke, Department of Mathematics, Regensburg University, 8400 Regensburg, Germany, Fax-No.: +49 941 943-2305, e-mail: Helmke@vax1.rz.uni-regensburg.dbp.de. Requests for information should be sent to one of the chairmen (U. Helmke or R. Mennicken). Dates: November 1, 1992 Deadline for submission of papers and proposals for special sessions. March 1, 1993 Notification of acceptance of contributed papers and special sessions. April 1, 1993 One page abstract is due. August 2 - 6, 1993 Symposium Chairmen: Uwe Helmke Reinhard Mennicken Department of Mathematics, Regensburg University, 8400 Regensburg, Germany. Fax: +49 941 943-2305 Telex: 65658 unire d E-Mail: Helmke@vax1.rz.uni-regensburg.dbp.de Mennicken@vax1.rz.uni-regensburg.dbp.de ------------------------------ From: HJJ te Riele Date: Thu, 11 Jun 1992 10:45:06 GMT Subject: ERCIM Course on Large-Scale Scientific Parallel Computing ERCIM advanced 4-day course on Large-Scale Scientific Parallel Computing October 20-23, 1992, RAL, Abingdon, UK ERCIM ERCIM stands for European Research Consortium for Informatics and Mathematics and is comprised of INRIA (France), GMD (Germany), RAL (UK), CWI (The Netherlands), INESC (Portugal), IEI/CNR (Italy) and FORTH (GREECE): all nationally funded research institutes in the field of informatics and applied mathematics. One of ERCIM's aims is to further the applications of informatics and mathematics through an active policy of technology transfer. Purpose of the course The course is designed to teach students, researchers, scientists, and engineers how to exploit parallel and vector computers, both present and future, in order to produce appropriate and efficient codes on these machines. Experience has shown that gaining know-how in this field can be a time-consuming activity. Participants can benefit from insight, knowledge and experience of the course teachers in this area, and gain a comprehensive introduction to the field. Contents of the course The initial part of the course deals with basic principles of vector/parallel architectures and their software and programming methodologies. Some emphasis is placed on approaches and techniques that facilitate the achievement of parallel software portability. The treatment of linear algebra on vector and parallel machines will be a central theme of the third day, including direct and iterative solution methods, sparse matrix techniques, and considerations of shared versus distributed memory algorithms. The final section of the course will cover finite element methods, adaptive and multi- grid stategies, and applications in the fields of computational physics, computational fluid dynamics, and the factorisation of large numbers. Location The course is fully residential in Cosener's House (Abingdon, UK; near the Rutherford Appleton Laboratory and close to Oxford) on an attractive location beside the River Thames, allowing good opportunity for participants to discuss topics with the lecturers. Course secretariat (for more information and subscription) Mr. Frans Snijders CWI Kruislaan 413; P.O. Box 4079 1009 AB Amsterdam The Netherlands tel. +31-20-5924171 fax +31-20-5924199 email: franss@cwi.nl Course Directors HJJ te Riele, CWI, email: herman@cwi.nl CP Wadsworth, RAL, email: cpw@inf.rl.ac.uk ------------------------------ From: Mike Osborne Date: Thu, 18 Jun 92 11:41:20 +1000 Subject: Positions at Australian National University Positions available at The Australian National University School of Mathematical Sciences Centre for Mathematics and its Applications Program in Advanced Computation and Modelling Applications are invited for two positions in the research program in Advanced Computation and Modelling. The successful candidates will be expected to support and enhance current research activity in numerical analysis, the computational solution of partial differential and integral equations, ill-posed problems, optimization, statistical computing, and symbolic and exact computation. Emphasis is being placed on the development both of algorithms exploiting advanced computer technology and concepts, and of data visualisation techniques. Opportunities for industrial collaboration exist through close collaboration with the CSIRO Division of Mathematics and Statistics, and links between the University and the Fujitsu Corporation. Computing facilities include a Fujitsu VP2200 supercomputer, a 16000 processor CM2, and a 32 processor CM5, in addition to medium scale machines and workstations. The University through its Centre for Information Sciences Research is an affiliate of the Argonne ACRF and has received a prototype Fujitsu AP1000 (a 128 processor distributed memory parallel computer) for joint development work. Two positions are available: one in the Institute of Advanced Studies component of the School, the other in the Faculties component supported by an special ARC grant to the Centre for Mathematics and its Applications. These appointments will be for periods of one, two or three years and may be extendible. The initial level of appointment, depending on the candidates experience and qualifications, will be in the following salary ranges: Research Fellow; $A41,000-$A48,688 p.a. Postdoctoral Fellow $A36,285-$A38,950 p.a. In addition, part-time appointments may be available as well as extended visiting appointments during leave of absence from a home institution. Assistance with relocation expenses will also be provided. Enquiries and requests for further information can be addressed to Professor M.R.Osborne email mike@thrain.anu.edu.au or na.osborne@na-net.ornl.gov. Fax (06) 247 2347. Applications: These should be sumitted in duplicate to The Secretary, The Australian National University, GPO Box 4, Canberra, ACT 2601, Australia, with whom applications close on 24 July, 1992. They should include a curriculum vitae, list of publications, and the names of at least three academic referees. Email addresses and/or fax numbers should be provided for referees so that appointment procedures can be expedited. The University reserves the right not to make an appointment or to appoint by invitation at any time. THE UNIVERSITY IS AN EQUAL OPPORTUNITY EMPLOYER ------------------------------ From: Graham de Vahl Davis Date: Tue, 09 Jun 92 18:59:58 MSZ Subject: Position at University of New South Wales UNIVERSITY OF NEW SOUTH WALES Sydney AUSTRALIA RESEARCH ASSOCIATE A new position of Research Associate is available in the School of Mechanical and Manufacturing Engineering as part of a project to develop design software for power utility boilers. The R & D program is being undertaken jointly by UNSW with Sydney University, Pacific Power Corporation of NSW and Aust. Supercomputing Technology. The program involves the development of innovative robust computational algorithms able to predict complex turbulent, high temperature two- phase flow through power utility boilers and the conversion of the research code into operational design software to be used by non- specialist engineers. An applicant is sought with a PhD, research experience in CFD, heat transfer and turbulence modelling and a willingness to contribute to the production of commercially viable software. Experience in developing and using industrial computer codes is essential. Experience on vector supercomputers or massively parallel computers would be an advantage. The person appointed will work on the boiler heat transfer aspect of the project, developing a finite-volume computer code tp predict the complex three-dimensional turbulent heat behaviour through the superheater and economiser regions of power generation boilers. Salary is in the range $ Aust 35,000 - 39,000 (approx.) Further information from Dr Eddie Leonardi, (+61 2) 697-4252, fax (+61 2) 663-1222, eddie @ cfd.mech.unsw.oz.au prior to July 28; or from Professor G de Vahl Davis, (+61 2) 697-4099, fax (+61 2) 663-1222, gdvd @ cfd.mech.unsw.oz.au after that date (also by e-mail intermittently prior to then). Please submit written application, quoting Reference Number 039, and including business and private telephone numbers, fax and e-mail numbers, together with the names, addresses (and preferably fax numbers) of at least two referees, CV and transcript, to: Recruitment Officer, Staff Office, UNSW, PO Box 1, Kensington, NSW 2033. ------------------------------ End of NA Digest ************************** -------