Path: utzoo!utgpu!jarvis.csri.toronto.edu!neat.cs.toronto.edu!krj Newsgroups: ut.na From: krj@na.toronto.edu (Ken Jackson) Subject: NA Digest Volume 89 : Issue 36 Message-ID: <89Sep17.160035edt.2565@neat.cs.toronto.edu> Organization: Department of Computer Science, University of Toronto Distribution: ut Date: 17 Sep 89 20:01:01 GMT NA Digest Sunday, September 17, 1989 Volume 89 : Issue 36 Today's Editor: Cleve Moler Today's Topics: Argonne Parallel Programming Class Two Computer Algebra Workshops Manuscript on Fundamentals of Matrix Computations E-mail Group for Graduate Officers Simplex Method for Non-linear Optimization Examples of Applications of Elementary Mathematics Positions at University of Iowa NAG Response About Apollo Implementation ------------------------------------------------------- From: David Levine Date: Mon, 11 Sep 89 12:33:32 CDT Subject: Argonne Parallel Programming Class The Advanced Computing Research Facility (ACRF) at Argonne National Laboratory is offering an introductory course on parallel computing December 6-8, 1989. The date of the course is intended to make it convenient for those attending the SIAM Conference on Parallel Programming being held the following week in Chicago (the course is NOT associated with the conference). The course is limited to 24 people on a first come first serve basis. Topics to be covered include: 1) Parallelizing compilers. 2) The Monitor and Schedule packages for portable parallel programming. 3) Programming the Butterfly 2. 4) Programming the AMT DAP. 5) Programming the Connection Machine-2. 6) Introduction to the LAPACK project. 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. 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-1 hypercube 32-processor Butterfly TC2000 1024-processor Active Memory Technology DAP 16384-processor Thinking Machines CM-2 Those interested in the class should contact: Teri Huml Mathematics and Computer Science Division Argonne National Laboratory Argonne, IL 60439-4844 (312) 972-7163 huml@mcs.anl.gov There will be a $25.00 registration fee per person for universities, federal laboratories and government organizations and $100.00 for commercial organizations. ------------------------------ From: Michael Singer Date: Mon, 11 Sep 89 12:17:45 EDT Subject: Two Computer Algebra Workshops CADE 90 CAP 90 Preliminary announcement During the week Sunday, May 6, to Saturday, May 12, 1990, a group of persons with a common interest are organizing two contiguous workshops entitled: ``Computer Algebra and Differential Equations (CADE-90)'' (Sunday morning --- Wednesday noon) and ``Computer Algebra and Parallelism (CAP-90)'' (Wednesday afternoon --- Saturday afternoon) at the Mathematical Sciences Institute (MSI) at Cornell University. The CADE-90 organizers are Evelyne Tournier at IMAG in Grenoble and Michael Singer at N.C. State University. The CAP-90 organizers are Jean Della Dora at IMAG in Grenoble, John Fitch at the University of Bath, and Erich Kaltofen at Rensselaer Polytechnic Institute. Both committees include Richard Zippel at Cornell University. We are combining efforts so that persons with overlapping interests can stay the entire week. The aim of CADE-90 is to allow workers in computer algebra to learn of recent theoretical developments concerning differential equations as well as make the researchers in theoretical areas aware of questions arising in the design of computer algebra systems. Peter Olver (University of Minnesota) will give four introductory lectures on ``Lie Group Methods in Differential Equations". In addition there will be a few invited one-hour lectures on topics such as perturbation theory, summation and integration in finite terms, effective methods in the theory of D-modules, differential galois theory, and resummation techniques. In addition there will be one or two presentations of software projects that integrate computer algebra and differential equations (such as DESIRE). We plan to have at most two lectures each morning and each afternoon, so that there will be plenty of time for informal interaction. The aim of CAP-90 is to allow workers in computer algebra to learn the recent theoretical developments concerning the design of parallel algebraic algorithms as well as make researchers working on theoretical issues in parallel algebraic computation aware of problems that arise when mapping these algorithms onto existing parallel computers. The topics include vectorized long integer arithmetic, parallel expression evaluation, parallel linear and non-linear system solving, parallel sparse interpolation, parallel polynomial root finding, and others. Furthermore, experience with implementing parallel algebraic algorithms on parallel computers will be discussed. The workshop will consist of several lectures by the keynote speaker (unconfirmed) and by one hour lectures of several invited researchers. The format of the workshop is such that ample time for discussion sessions and impromptu presentations of ongoing research is reserved. It is also anticipated that access to the local Cornell supercomputers will be provided. Funds are available for partial support of young predoctoral and postdoctoral visitors. Anyone wishing to attend either workshop or to obtain general information is encouraged to contact MSI through: Valery Styles, Mathematical Sciences Institute, Cornell University, 201 Caldwell Hall, Ithaca, N.Y. 14853-2602. For more information about the scientific content of CADE-90 contact Michael F. Singer, Department of Mathematics, Box 8205, N.C. State University, Raleigh, N.C. 27695-8205 USA (e-mail: SINGER@NCSUMATH.BITNET or singer%matagh@ncsuvx.ncsu.edu), or Evelyne Tournier, TIM3-IMAG, BP 68, 38402 St. Martin d'Heres cedex, FRANCE (e-mail: TOURNIER@FRGREN81.BITNET). For more information about the scientific content of CAP-90 contact Jean Della Dora, TIM3-IMAG, BP 68, 38402 St. Martin d'Heres cedex, FRANCE (e-mail: DELLADO@FRCICG71.BITNET), John P. Fitch, School of Mathematical Sciences, University of Bath, Bath BA2 7AY, ENGLAND (e-mail: jpff@maths.bath.ac.uk), or Erich Kaltofen, Department of Computer Science, Rensselaer Polytechnic Institute, Troy, New York 12180-3590 (e-mail: kaltofen@cs.rpi.edu). ------------------------------ From: David Watkins Date: Tue, 12 Sep 89 10:54 PDT Subject: Manuscript on Fundamentals of Matrix Computations For some time I have been working on a manuscript entitled FUNDAMENTALS OF MATRIX COMPUTATIONS that is intended to be used as an undergraduate text or as a relatively easy graduate text. The book has been through class testing at several institutions and is nearly in its final form. One more round of reviews is planned. If you have taught matrix computations and are interested in reviewing this book, please contact my editor: Valerie Hunter Mathematics Editor John Wiley and Sons 605 Third Avenue New York, NY 10158 phone 212-850-6244 David Watkins, Washington State University (watkins@wsumath.bitnet) ------------------------------ From: Henry Wolkowicz Date: Tue, 12 Sep 89 15:29:18 EDT Subject: E-mail Group for Graduate Officers I am trying to start an E-mail group for graduate officers (chairman of graduate committees) at various institutions. I have tried to collect several E-mail addresses and will continue collecting more. I will try and be concise and short in all messages so as not to increase (too much) the amount of junk E-mail we all get already. I hope that this service will be useful to all. Please send any items to me. I will collect and edit them and send them out in a group. I think that it would be helpful to pass information among the different institutions with graduate programs. For example, announcements of dissertation awards and deadline dates could be passed and then posted. Any new information about Chinese students coming or not coming would be helpful. Questions about details of courses at different institutions could be passed. Please send me the E-mail address of the graduate officers at your institution and I will try and contact them. Henry Wolkowicz; Department of Combinatorics and Optimization; Faculty of Mathematics; University of Waterloo; Waterloo, Ontario, Canada N2L 3G1 (519-888-4597 office; 746-6592 FAX) {hwolkowicz@water.bitnet; na.wolkowicz@na-net.stanford.edu } {hwolkowicz@water.uwaterloo.ca; usersunn@ualtamts.bitnet } ------------------------------ From: Ashwin A Desai Date: 12 Sep 89 19:23:28 GMT Subject: Simplex Method for Non-linear Optimization I need any information I can get about the Nelder-Mead procedure (a simplex method for minimization). I would like to know if there are any books which explain this method in some detail and also any details about a software package for this method(if available). Thanks in advance, Ashwin Worcester Polytechnic Institute ------------------------------ From: Jerry Johnson Date: Tue, 12 Sep 89 12:36 CDT Subject: Examples of Applications of Elementary Mathematics D G Wilson asked in last week's newsletter for "real live examples of the use of relatively elementary mathematics (calculus, ordinary differential equations, vectors, elementary linear algebra, etc.) in science and engineering. They want to use these examples in the classroom to motivate concepts being taught. They would appreciate hearing about any examples that you would be willing to share." A great idea ... and we would also appreciate receiving the same. Please send contributions to: JOHNSON%nemo.math.okstate.edu@relay.cs.NET or Prof. Jerry Johnson, Mathematics Department, Okla. State University, Stillwater, OK 74078. Having asked, I will now give. A spherical mine filled with an explosive of some given specific gravity and encased in a one inch thick iron shell should float just submerged under the ocean surface. What diameter should it have? This requires the solution of a cubic equation. It can be used in calculus as a vehicle for applying Newton's method, or in precalculus as motivation for looking at cubic equations in the first place. ------------------------------ From: Ken Atkinson Date: Wed, 13 Sep 89 19:19 CDT Subject: Positions at University of Iowa Positions Available The University of Iowa The Mathematics Department of the University of Iowa invites appli- cations for the following positions.: 1. Three tenure-track appointments at the Assistant or beginning Associate Professor level beginning in the 1990-91 academic year. One of these is to be in numerical analysis and two are to be filled by specialists in harmonic analysis, probability theory, or topology of manifolds. Selection will be based on evidence of out- standing research accomplishments or potential, and teaching abil- ity. A Ph.D. or equivalent training is required. 2. One senior faculty position beginning in 1990-91 academic year or later. Only applicants of extraordinary stature will be consid- ered. A strong record of leadership in teaching and research in one of the department's current or developing areas of strength is required. 3. Pending availability of funds, one or more visiting positions for all or part of the 1990-91 academic year. Selection will be based on research expertise and teaching ability. Preference will be given to applicants whose scholarly activity is of particular interest to members of the current faculty. Women and minority candidates are especially urged to apply for any of the above positions. The University of Iowa welcomes the employment of highly qualified professional couples on its faculty and staff, permits the appointment of faculty couples within the same department, and permits the sharing of a single appointment by a faculty couple. Applications will be received until January 31, 1990, or until the positions are filled. To apply send a complete vita and have three or more letters of recommendation sent to: Professor W. A. Kirk, Chair Department of Mathematics University of Iowa Iowa City, Iowa 52242. The University of Iowa is an Equal Opportunity/Affirmative Action Employer. ------------------------------ From: Richard W Brankin Date: Sun, 17 Sep 89 10:47 GMT Subject: NAG Response About Apollo Implementation We were sorry to hear of the difficulties in attempting to re-compile the NAG Fortran Library under the Apollo SR10.1 system by Mr. Calamai at the University of Waterloo [NA News Digest, vol. 89, number 34, Sep 3rd 1989] As far as we are aware, we had no contact with him prior to his public message about the technical difficulties that he experienced. We have responded to Mr. Calamai and below is an extract of our reply. We would be most grateful if customers contact us first (by phone, fax, e-mail or in writing) - to allow us the opportunity to comment and, if possible, to assist - before using a public network to broadcast reports of apparent difficulty involving the NAG Library; even if the Library itself is not at fault (which we believe to be so in this case). We would certainly not want recipients of such a message to infer (wrongly) that NAG does not provide any advice or assistance. We have been carrying out tests using Apollo SR10 with the NAG Fortran Library. The initial tests, using a pre-release compiler (10.0), indicated many problems with the Fortran compiler. A replacement Fortran compiler (10.6) came with SR10.1 accompanied by a list of known errors. We have reported a number of further compiler problems with SR10.1, and are awaiting a response from Apollo. In the meantime we have been able to work around all of the problems. An implementation of the NAG Fortran Library for use under SR10 is currently being certified and we will release it when fully tested. We have also tried Apollo's tools to convert object libraries for use between SR9.7 and SR10. These tools break down after less than 300 modules have been processed; again, Apollo have been informed. NAG Technical Desk ------------------------------ End of NA Digest ************************** ------- Reposted by Prof. Kenneth R. Jackson, krj@na.toronto.edu (on Internet, CSNet, Computer Science Dept., ARPAnet, BITNET) University of Toronto, krj@na.utoronto.ca (on CDNnet and other Toronto, Ontario, X.400 nets (Europe)) Canada M5S 1A4 ...!{uunet,pyramid,watmath,ubc-cs}!utai!krj (Phone: 416-978-7075) (on UUCP) (FAX: 416-978-4765)