Centennial Lectures

The Future of Microprocessor ArchitectureJohn Hennessy,Ph.D. President, Stanford UniversityAbstract:From the mid-1980s until just recently, microprocessor performance grew at an amazing rate of over 50% a year. This growth was driven by basic improvements in the speed of integrated circuits and by a 20-year process of exploiting increasing levels of instruction level parallelism. A set of interrelated road blocks, including limits on available instruction level parallelism and increasing inefficiency in power and transistor use arising from attempts to exploit further instruction level parallelism, are bringing this road to an end. We document these limitations and the difficulty of overcoming them. We argue that the path ahead must rely on explicit, thread-level parallelism and demonstrate the performance advantages of that approach for server applications using data from the Sun Microsystems Niagara processor.Biography:John L. Hennessy joined Stanford's faculty in 1977. He was named the Willard and Inez Kerr Bell Endowed Professor of Electrical Engineering and Computer Science in 1987. From 1983 to 1993, Dr. Hennessy was director of the Computer System Laboratory, a research and teaching center operated by the Departments of Electrical Engineering and Computer Science that fosters research in computer systems design. He served as chair of computer science from 1994 to 1996 and, in 1996, was named dean of the School of Engineering. As dean, he launched a five-year plan that laid the groundwork for new activities in bioengineering and biomedical engineering. In 1999, he was named provost, the university's chief academic and financial officer. As provost, he continued his efforts to foster interdisciplinary activities in the biosciences and bioengineering and oversaw improvements in faculty and staff compensation.A pioneer in computer architecture, in 1981 Dr. Hennessy drew together researchers to focus on a computer architecture known as RISC (Reduced Instruction Set Computer), a technology that has revolutionized the computer industry by increasing performance while reducing costs. In addition to his role in the basic research, Dr. Hennessy helped transfer this technology to industry. In 1984, he cofounded MIPS Computer Systems, now MIPS Technologies, which designs microprocessors. In recent years, his research has focused on the architecture of high-performance computers.Dr. Hennessy is a recipient of the 2000 John Von Neumann Medal, the 2000 ASEE R. Lamme Medal, the 2001 Eckert Mauchly Award and the 2001 Seymour Cray Award. He is a member of the National Academy of Engineering and the National Academy of Sciences, and he is a fellow of the American Academy of Arts and Sciences, the Association for Computing Machinery, and the Institute of Electrical and Electronics Engineers.He has lectured and published widely and is the co-author of two internationally used undergraduate and graduate textbooks on computer architecture design.
Dr. Hennessy earned his bachelor's degree in electrical engineering from Villanova University and his master's and doctoral degrees in computer science from the State University of New York at Stony Brook.Refreshments will be served.

Location: Ethel Percy Andrus Gerontology Center (GER) - Auditorium

Audiences: Everyone Is Invited

Contact: Nancy Levien