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The 40Th Anniversary of Amdahl's sscs_NLsummer07 7/13/07 9:20 AM Page 1 SSCSSSSCSSSSCCSS IEEE SOLID-STATE CIRCUITS SOCIETY NEWS Summer 2007 Vol. 12, No. 3 www.ieee.org/sscs-news The 40th Anniversary of Amdahl’s Law sscs_NLsummer07 7/13/07 9:20 AM Page 2 Editor’s Column elcome to self-contained resource with back- Anderson, retired Chairman of the Sum- ground articles (that is, the ‘original National Cash Register. mer, 2007 sources’) and current articles by We also reprint Dr. Amdahl’s orig- W experts who describe the current inal article “Validity of the Single Solid-State Circuits Society News! state of affairs in technology and the Processor Approach to Achieving We are delighted impact of the original papers and/or Large Scale Computing Capabilities” to receive feedback patents. from the Spring Joint Computer from our readers. For Summer, 2007 the theme is Conference, 1967, pp. 483-485. Please refer to the Letters to the Edi- “The 40th Anniversary of Amdahl’s Thank you for taking the time to tor for comments on “The Origins of Law,” and Dr. Amdahl has written a read the SSCS News. We appreci- the Integrated Circuit” (Spring, special Feature Article entitled “Com- ate all of your comments and feed- 2007). This Summer, 2007, issue is puter Architecture and Amdahl’s back! Please send comments to the third of four that SSCS plans to Law.” We are also reprinting a biog- [email protected]. publish annually (one each in Win- raphy of Dr. Amdahl and excerpts ter, Spring, Summer, and Fall). from an interview that he gave in January, 2007, to Dr. William S. LETTERS TO THE EDITOR The goal of each issue is to be a Dr. Lanzerotti, I want to compliment you on the IEEE Solid-State Circuits Society AdCom outstanding Spring 2007 issue of President: Fax: +1 914 945-4160 the SSCS news. The articles by Richard C. Jaeger Elected AdCom Members at Large Thomas H. Lee and Riordan/Hod- Alabama Microelectronics Center Terms to 31 Dec. 07: deson are superb. I have always Auburn University, AL Bill Bidermann [email protected] David Johns been fascinated by the history Fax: +1 334 844-1888 Terri Fiez behind the technology I use in my Vice President: Takayasu Sakurai daily work and these two articles Willy Sansen Mehmet Soyuer pulled all the facts together in a K. U. Leuven Terms to 31 Dec. 08: Leuven, Belgium highly readable format. Thanks Wanda K. Gass Secretary: Ali Hajimiri again and keep up the great work! David A. Johns Paul J. Hurst University of Toronto Akira Matsuzawa Toronto, Ontario, Canada Sincerely, Ian Young Bruce Tesch Treasurer: Terms to 31 Dec. 09: Rakesh Kumar John J. Corcoran Senior Member of Technical Staff Technology Connexions Kevin Kornegay Maxim Integrated Products Poway, CA Hae-Seung (Harry) Lee Past President: Thomas H. Lee Dear Mary Lanzerotti, Stephen H. Lewis Jan Van der Spiegel University of California I wanted to write to say how much I Davis, CA Region 8 Representative: have enjoyed the recent issues of SSCS Other Representatives: Jan Sevenhans News, and to applaud your work in pre- Representative to Sensors Council senting historical articles. If any of us at Darrin Young Region 10 Representative: Representative from CAS to SSCS CK Wang the IEEE History Center can ever be of Domine Leenaerts help to you or your writers, please feel free Representative to CAS from SSCS Chairs of Standing Committees: Un-Ku Moon Awards David Hodges to contact me. We are always eager to Chapters Jan Van der Spiegel assist any efforts by IEEE units to pro- Newsletter Co-Editors: Education CK Ken Yang mote electrical engineering history, and Mary Y. Lanzerotti Meetings Bill Bidermann IBM T.J. Watson Research Center Membership Bruce Hecht we cheer your efforts. [email protected] Fax: +1 914 945 1358 Nominations Stephen H. Lewis Publications Bernhard Boser With very best wishes, Lewis Terman IBM T. J. Watson Research Center For detailed contact information, see the Soci- Robert [email protected] ety e-News: www.ieee.org/portal/site/sscs Robert D. Colburn For questions regarding Society business, contact the SSCS Executive Office. Research Coordinator Contributions for the Fall 2007 issue of the Newsletter must be received by IEEE History Center, Rutgers 8 August 2007 at the SSCS Executive Office. A complete media kit for advertisers is University available at www.spectrum.ieee.org/mc_print. Scroll down to find SSCS. 39 Union Street Anne O’Neill, Executive Director Katherine Olstein, SSCS Administrator New Brunswick, NJ 08901 IEEE SSCS IEEE SSCS 445 Hoes Lane 445 Hoes Lane, +1 732 932 1066 Piscataway, NJ 08854 Piscataway, NJ 08854 fax: +1 732 932 1193 Tel: +1 732 981 3400 Tel: +1 732 981 3410 http://www.ieee.org/web/abou- Fax: +1 732 981 3401 Fax: +1 732 981 3401 tus/history_center Email: [email protected] Email: [email protected] 2 IEEE SSCS NEWS Summer 2007 sscs_NLsummer07 7/13/07 9:20 AM Page 3 Photo courtesy of Matt Thomas. Dr. Gene Amdahl and the WISC (Wisconsin Integrally Syn- chronized Computer), the subject of his Ph.D. thesis and the catalyst of his career in design and Summer 2007 Volume 12, Number 3 entrepreneurial activities. Editor’s Column . .2 Letters to the Editor . .2 Corrections . .21 DVD Archive Notes . .21 Clarafication – Transitor Patent History . .21 TECHNICAL LITERATURE Computer Architecture and Amdahl’s Law, Gene M. Amdahl . .4 An Interview with Dr. Amdahl, William S. Anderson . .10 About Gene M. Amdahl Validity of the Single Processor Approach to Achieving Large Scale Computing Capabilities, Gene M. Amdahl (1967) . .19 PEOPLE Dr. Gene Amdahl to Speak at ICCAD 2007, Patrick H. Madden . .22 New Seniors . .22 18 Tools: ISSCC Paper Submissions - Increasing the Likelihood of Success, Jan Van der Spiegel and Kenneth Smith . .23 CHAPTER NEWS SSCS-Benelux and Leuven Student Branch Organize First Microelectronics Symposium, Jan Craninckx, Cedric Walravens . .25 SSCS Distinguished Lecturer Albert Wang Visits Central North Carolina . .25 Graduate Microelectronics Courses Initiated by SSCS-Italy . .26 SSCS-Santa Clara Valley: Did You Know That……?, Dan Oprica . .26 Razavi Kicks off DL Program in Vancouver, Resve Saleh . .27 RFIT Sponsored by SSCS Singapore on 9 – 11 December 2007 . .28 CONFERENCES ISSCC 2007 Panel on the Ultimate Limits of Integrated Electronics, Sudhakar Pamarti . .29 Europe’s Analog Design Experts Convene at 16th AACD Workshop in March, Jan Sevenhans and Jan Craninckx . .30 CICC in San Jose, 16-19 September . .30 27 19th Hot Chips Conference to Meet on 19-21 August at Stanford University 31 ESSCIRC on 11-13 September in Munich: The European Forum for Solid-State Circuits . .32 2007 IEEE Bipolar/BiCMOS Circuits and Technology (BCTM) in Boston on 30 September, Yih-Feng Chyan . .33 IEEE Compound Semiconductor IC Symposium (CSICS) on 14-17 October in Portland . .34 NEWS 4th IEEE International Symposium on Medical Devices and Biosensors . .28 Eight Candidates Vie for Five SSCS AdCom Positions for 2008-2010 . .35 News from the IEEE Council on Electronic Design Automation (CEDA) . .37 Timely JSSC Articles of Interest, Anne O’Neill . .39 SSCS Members to Receive Nanotechnology Magazine, Bill Bidermann . .40 TryEngineering.org Available in Seven Languages . .40 Graduating Students Get a Discount on Dues . .40 31 CONFERENCE CALENDAR . .44 Summer 2007 IEEE SSCS NEWS 3 sscs_NLsummer07 7/13/07 9:20 AM Page 4 TECHNICAL LITERATURE Computer Architecture and Amdahl’s Law Gene M. Amdahl y educational background versity of Wisconsin in Madison. it as simple as possible, and to use has never included any This was an unusual time in technologies that were commer- training in the field of physics, for they had just discov- cially available. I chose a magnet- M ered “strange particles” in late ic drum for main storage, with re- computing, so all of my design activities have been based on my 1949, and the name “meson” had circulating registers to minimize experience and the necessity of not yet been proposed. At that the use of electronics. For I/O I solving current problems. Conse- time two other graduate students planned to use paper tape with a quently, my computer architecture and I were assigned to determine teletypewriter, which could both contributions will largely be auto- if a force between nuclear particles punch and read paper tape and biographical. proposed by a Japanese physicist print as well. I was raised on a farm in eastern could adequately describe the sim- I determined that I could use South Dakota and attended a one- plest 3-body nucleus, Tritium floating point exclusively if I had room grade school for all eight (Hydrogen 3). We worked for 30 a way to deal with the transfer of grades. We didn’t have electricity days using an 8-digit desk calcula- word segments from one word to until I was a freshman in high tor, and a slide rule to hold two another! The 3-address operation school, so my technical experience more most-significant digits. We that I came up with was Extract, was limited primarily to mechani- mapped the energy of the system which took “n” bits, beginning at cal equipment. I enrolled in South for all relevant ranges of the bit “j” in word 1, was to be insert- Dakota State College (SDSC) in the parameters, but we couldn’t quite ed, beginning at bit “k” in word 2, fall of 1941 in mechanical engi- achieve a stable state. We had the result to be stored in location neering, but decided it was not the found the proposed force to be 3. This eliminated the need for field for me. So I took a potpourri inadequate, but I had found the approximately a dozen instruc- of courses in math, chemistry, means of calculating to be even tions in fixed point! The complete electrical engineering and physics.
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