Newsgroups: ut.na Path: utzoo!utgpu!jarvis.csri.toronto.edu!csri.toronto.edu!krj From: krj@csri.toronto.edu (Ken Jackson) Message-ID: <8806271322.AA02970@gerrard.csri.toronto.edu> Date: Mon, 27 Jun 88 08:02:51 EDT NA Digest Volume 88 : Issue 25 Distribution: ut Organization: University of Toronto, CSRI Subject: (none) NA Digest Sunday, June 26, 1988 Volume 88 : Issue 25 Today's Editor: Cleve Moler Today's Topics: Cornell Workshop in Matrix-Based Signal Processing Argonne Parallel Programming Class Almost Incompressible Computational Fluid Dynamics Re: Rational Approximation of Floating Point Numbers ------------------------------------------------------- From: Frank LukDate: Tue, 21 Jun 88 10:23:51 EDT Subject: Cornell Workshop in Matrix-Based Signal Processing Mathematical Sciences Institute Workshop on Matrix-Based Signal Processing Algorithms and Architectures Cornell University, Ithaca June 27-29, 1988. Program Monday, June 27 9:00 - 9:40 H.T. Kung, Carnegie Mellon University - "Mapping Applications onto Parallel Computers Can be Easy" 10:00 - 10:40 J. McWhirter, Royal Signals and Radar Establishment - "An Efficient Array for Computing the MVDR" 11:00 - 11:40 C.M. Rader, M.I.T. Lincoln Laboratory - "Wafer-Scale Systolic Array for Adaptive Antenna Processing" 1:30 - 2:10 J. Proakis, Northeastern University - "Numerical Properties and Computational Requirements for Several Adaptive Filtering Algorithms" 2:30 - 3:10 M. Kowalski, University of Utah - "On Approximation of Band-Limited Signals" 3:30 - 4:10 S. Burrus, Rice University - "Block Signal Processing Using Matrix Implementation of Digital Filters" 4:10 - 6:00 RECEPTION Tuesday, June 28 9:00 - 9:40 G.W. Stewart, University of Maryland - "Implementation of Systolic Algorithms on MIMD Machines" 10:00 - 10:40 M. Lam, Carnegie Mellon University - "Programmable Systolic Arrays" 11:00 - 11:40 J. Rice, Purdue University - "Advanced Parallel Systems" 1:30 - 2:10 D. Tufts, University of Rhode Island - "High Resolution Adaptive Signal Processing" 2:30 - 3:10 P. Eberlein, SUNY at Buffalo - "Some Experiences with Jacobi-type Procedures on Parallel Architectures" 3:30 - 4:10 R. Schreiber, SAXPY Corp. - "Convergence of Block Jacobi Methods" 4:10 - 6:00 RECEPTION Wednesday, June 29 9:00 - 9:40 S. Haykin, McMaster University - "Adaptive Filter Theory" 10:00 - 10:40 M. Kaveh, University of Minnesota - "The Coherent Signal-Subspace Method and Time-Domain Realization of its Preprocessors" 11:00 - 11:40 H. Whitehouse, Naval Ocean Systems Center - "Signal Processing Computational Needs: An Update" 11:40 - 1:30 RECEPTION ------------------------------ From: David Levine Date: Tue, 21 Jun 88 11:31:44 PDT Subject: Argonne Parallel Programming Class Argonne National Laboratory has set up an Advanced Computing Research Facility (ACRF) for the study of parallel computing. Machines currently in the ACRF are: 8-processor Alliant FX/8 16-processor Intel iPSC-VX hypercube 20-processor Encore Multimax 24-processor Sequent Balance 21000 32-processor Intel iPSC hypercube 1024-processor Active Memory Technology DAP 16384-processor Thinking Machines CM-2 Projects at Argonne utilizing the ACRF include investigations in parallel logic programming and parallel linear algebra, the development of portable parallel programming methodologies, and studying the potential of parallel processing for large-scale scientific computing. To encourage the use of the ACRF as an international facility, Argonne is sponsoring classes to familiarize potential users with the ACRF multiprocessors and parallel programming in general. The next class will be held July 27-29, 1988 Topics to be covered include parallelizing compilers, the Monitor and Schedule packages for portable parallel programming, hypercube programming, programming the DAP, and programming the Connection Machine. A portion of the third day will be devoted to consideration of each attendee's particular project. Fortran will be emphasized as the primary programming language. This will be a hands-on class; at its completion participants will have written and run programs on each machine, and should be familiar with the ACRF environment. Those interested in the classes should contact Teri Huml Mathematics and Computer Science Division Argonne National Laboratory Argonne, IL 60439-4844 (312) 972-7163 huml@anl-mcs.arpa There will be a $25.00 charge for this class, no financial support for attendees is available. ------------------------------ From: Hans Stoor Date: 8 Jun 88 13:16:12 GMT Subject: Almost Incompressible Computational Fluid Dynamics Is there anyone interested in numerical methods for almost incompressible fluid flow. I'm studying finite difference methods for Navier-Stokes equations and very low Mach numbers. Actual problems right now is conditions for open boundaries (two dimensional), and I'm also looking for reference solutions to the model problems, straight channel, driven cavity and backward-facing-step. The Reynolds number is quite moderate. -- Hans Stoor, TDB, Uppsala ------------------------------ From: Craig NoLastName Date: 22 Jun 88 13:21:37 GMT Subject: Re: Rational Approximation of Floating Point Numbers >Does anyone know of numerical algorithms which, when given a number >x in [0,1), return the rational number (numerator/denominator) >that approximates x to within machine tolerance? > > Dimpy Pathria. > See Jerome Spanier and Keith B. Oldham, "An Atlas of Functions," Springer-Verlag, 1987, pp. 665-7. I have a C program implementing their algorithm. If anybody wants a copy, let me know. --Craig AT&T Bell Laboratories - Naperville, Illinois ------------------------- Reposted by -- Kenneth R. Jackson, krj@csri.toronto.edu (csnet) Department of Computer Science, uunet!csri.toronto.edu!krj (uucp) University of Toronto, krj@csri.toronto.cdn (ean x.400) Toronto, Canada M5S 1A4 krj%csri.toronto.edu@relay.cs.net (arpa) (416) 978-7075 krj@csri.utoronto (bitnet)