[From nobody Thu Oct 13 09:42:09 2011 Received: from g4t0017.houston.hp.com (g4t0017.houston.hp.com [15.201.24.20]) by adlmail.cce.hp.com (@(#)Sendmail version 8.13.3 - Revision 1.004:: HP-UX11.31 - 03rd February, 2010/8.13.3) with ESMTP id p9D7qZZQ010302 for <jwthomas@adlmail.cup.hp.com>; Thu, 13 Oct 2011 00:52:35 -0700 (PDT) Received: from smtp.stanford.edu (smtp3.Stanford.EDU [171.67.219.83]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by g4t0017.houston.hp.com (Postfix) with ESMTPS id 7B1F1385CC for <jwthomas@cup.hp.com>; Thu, 13 Oct 2011 07:52:24 +0000 (UTC) Received: from mailman.stanford.edu (mailman.Stanford.EDU [171.67.216.245]) by smtp.stanford.edu (Postfix) with ESMTP id 1CF1AD84DD; Thu, 13 Oct 2011 00:51:47 -0700 (PDT) X-Original-To: icme-linear-algebra-optimization@lists.stanford.edu Delivered-To: icme-linear-algebra-optimization@lists.stanford.edu Received: from mailman.stanford.edu (localhost.localdomain [127.0.0.1]) by mailman.stanford.edu (Postfix) with SMTP id 9CAE7200C18; Thu, 13 Oct 2011 00:51:44 -0700 (PDT) Received: from mail-yw0-f54.google.com (mail-yw0-f54.google.com [209.85.213.54]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (No client certificate requested) by mailman.stanford.edu (Postfix) with ESMTPS id 0E9A92008E2; Thu, 13 Oct 2011 00:51:43 -0700 (PDT) Received: by ywp17 with SMTP id 17so1353920ywp.27 for <multiple recipients>; Thu, 13 Oct 2011 00:51:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:sender:date:x-google-sender-auth:message-id:subject :from:to:content-type; bh=3nTXhHoavFswXZGFt8MkDJ3IL9FpmR+lXMnXSi9k3AY=; b=vogXv+wd2qhrRF/b19VgjlOnub2njlMChTG6YGOsgQZ+r+TP/vIWXkPkGxJsZKOzKA b3/ZGi4985br+L7T96h8mNQB3gHW8AlBAO7YappgKeysQbOZnC+rMYbmQAbHF9/QyNlS ErA+GVomrxeynStX/d2lo4hMSU+W2rNaLGCUA= MIME-Version: 1.0 Received: by 10.68.1.230 with SMTP id 6mr7277942pbp.27.1318492302655; Thu, 13 Oct 2011 00:51:42 -0700 (PDT) Received: by 10.68.51.201 with HTTP; Thu, 13 Oct 2011 00:51:42 -0700 (PDT) Date: Thu, 13 Oct 2011 00:51:42 -0700 X-Google-Sender-Auth: efDsP-laET8HAQXRGNlUnMwciWY Message-ID: <CAGERL-3e-iv4YOGTHe3vPEmvQhBzwLe6WENP5vEE_vM9phjJbQ@mail.gmail.com> From: Michael Saunders <saunders@stanford.edu> To: icme-linear-algebra-optimization@mailman.stanford.edu, icme-faculty@mailman.stanford.edu, icme-students@mailman.stanford.edu, BANANA <banana@csmr.ca.sandia.gov>, or-seminars@mailman.stanford.edu Subject: [icme-linear-algebra-opt LA/Opt seminar TODAY (William Kahan, UC Berkeley) X-BeenThere: icme-linear-algebra-optimization@lists.stanford.edu X-Mailman-Version: 2.1.13 Precedence: list List-Id: <icme-linear-algebra-optimization.lists.stanford.edu> List-Unsubscribe: <https://mailman.stanford.edu/mailman/options/icme-linear-algebra-optimization>, <mailto:icme-linear-algebra-optimization-request@lists.stanford.edu?subject=unsubscribe> List-Archive: <https://mailman.stanford.edu/mailman/private/icme-linear-algebra-optimization> List-Post: <mailto:icme-linear-algebra-optimization@lists.stanford.edu> List-Help: <mailto:icme-linear-algebra-optimization-request@lists.stanford.edu?subject=help> List-Subscribe: <https://mailman.stanford.edu/mailman/listinfo/icme-linear-algebra-optimization>, <mailto:icme-linear-algebra-optimization-request@lists.stanford.edu?subject=subscribe> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: icme-linear-algebra-optimization-bounces@mailman.stanford.edu Errors-To: icme-linear-algebra-optimization-bounces@mailman.stanford.edu X-PMX-Version: 5.6.1.2065439, Antispam-Engine: 2.7.2.376379, Antispam-Data: 2011.10.13.73622 X-PMX-Spam: Gauge=IIIIIIII, Probability=8%, Report=' MULTIPLE_RCPTS 0.1, BODYTEXTP_SIZE_3000_LESS 0, BODY_SIZE_2000_2999 0, BODY_SIZE_5000_LESS 0, BODY_SIZE_7000_LESS 0, DATE_TZ_NA 0, FROM_EDU_TLD 0, WEBMAIL_SOURCE 0, __ANY_URI 0, __CP_URI_IN_BODY 0, __CT 0, __CTE 0, __CT_TEXT_PLAIN 0, __HAS_LIST_HEADER 0, __HAS_LIST_HELP 0, __HAS_LIST_SUBSCRIBE 0, __HAS_LIST_UNSUBSCRIBE 0, __HAS_MSGID 0, __MIME_TEXT_ONLY 0, __MIME_VERSION 0, __MULTIPLE_RCPTS_TO_X5 0, __PHISH_SPEAR_HTTP_RECEIVED 0, __PHISH_SPEAR_STRUCTURE_1 0, __PHISH_SPEAR_STRUCTURE_2 0, __SANE_MSGID 0, __TO_MALFORMED_2 0, __TO_NO_NAME 0, __URI_NS ' Reminder: Distinguished address by Professor William Kahan for all concerned with scientific computation Linear Algebra and Optimization Seminar (CME 510) http://icme.stanford.edu/seminars/seminars.php 4:15pm Thursday Oct 13, 2011 Y2E2 111 http://campus-map.stanford.edu/index.cfm?ID=04-070 PROFESSOR WILLIAM KAHAN Math Dept and EECS Dept, UC Berkeley http://www.eecs.berkeley.edu/~wkahan Desperately Needed Remedies for the Undebuggability of Large Floating-Point Computations in Science and Engineering If suspicions about the accuracy of a computed result arise, how long does it take to either allay or justify them? Often diagnosis has taken longer than the computing platform's service life. Software tools to speed up diagnosis by at least an order of magnitude could be provided but almost no scientists and engineers know to ask for them, though almost all these tools have existed, albeit not all together in the same place at the same time. These tools would cope with vulnerabilities peculiar to Floating-Point, namely roundoff and arithmetic exceptions. But who would pay to develop the suite of these tools? Nobody, unless he suspects that the incidence of misleadingly anomalous Floating-Point results rather exceeds what is generally believed. Ample evidence supports that suspicion. Bio: Professor Kahan has been widely honored for his dedication to improving scientific computing algorithms and machines. 1989 ACM Turing Award 1993 Honorary Doctor of Mathematics, Chalmers Inst, Sweden 1994 ACM Fellow 1997 SIAM John von Neumann Memorial Lecture 1998 Honorary Doctor of Mathematics, Univ of Waterloo, Canada 2000 IEEE Emanuel R. Piore Award 2003 American Academy of Arts & Sciences 2004 Distinguished Mentor of Undergraduate Research in the College of Letters & Science 2005 National Academy of Engineering, Foreign (Canadian) Associate Forthcoming talks: Fri Oct 21 David Fong, ICME Thu Oct 27 Ming Gu, UC Berkeley Thu Nov 03 Thu Nov 10 Thu Nov 17 Richard Li-Yang Chen, Sandia Livermore _______________________________________________ icme-linear-algebra-optimization mailing list icme-linear-algebra-optimization@lists.stanford.edu https://mailman.stanford.edu/mailman/listinfo/icme-linear-algebra-optimization ]