"The Computing Continuum," Intel’s Computing Continuum Conference, San Francisco, CA, March 16, 2000.

"A Vision of the Future Computational Infrastructure," Keynote Address, University of Virginia School of Engineering and Applied Sciences Research Retreat, Warrenton, VA, March 10, 2000.

"The Computing Continuum," Beyond Moore’s Law: Opportunities and Threats from Future, Ubiquitous High Performance Computing, Lawrence Livermore National Laboratory,
Livermore, CA, December 8-10, 1999.

"The Computing Continuum," California Institute of Technology Symposium on Information Technology at the Turn of the Century: A Computational Science Perspective, Pasadena, CA,
October 27-28, 1999.

"Optical Layer and the Real World—What Would I Do if I Had All the Bandwidth I Can Imagine?," Cross-Industry Working Team, Toronto, Canada, August 3-4, 1999.

"The Computing Continuum," Keynote Address, Eighth IEEE International Symposium on High Performance Distributed Computing, Redondo Beach, CA, August 3-6, 1999.

"The High Performance Computing Continuum," Keynote Address, HPCAsia ’98, Singapore, September 23, 1998.

"Current Trends in Science Policy as It Affects CSE," Plenary Session panelist, CRA Snowbird Conference, Snowbird, UT, July 26-28, 1998.

"Networking Resources for Collaborative Research in the Southeast," Keynote Address, American Association for the Advancement of Science, Networking Resources for Collaborative Research in the Southeast Conference, Atlanta, GA, June 3,1998.

"NPACI and the United States National Science Foundation’s National Partnership for Advanced Computational Infrastructure," High Performance Computing Systems and Applications (HPCS 98), Edmonton, Canada, May 20, 1998.

"The Computing Continuum," Interfaces to Scientific Data Archives workshop, Center for Advanced Computing Research, CalTech, Pasadena, CA, March 25, 1998.

"The Future of High Performance Computing," Keynote Address, Future Directions in High Performance Computing Conference, Stockholm, Sweden, December 18, 1997.

"The Multi-dimensional Computing Continuum," New Directions for News—New Model for New Media Conference, Los Angeles, CA, December 10, 1997.

"The Evolving Computing Continuum," Computational Biomedicine Symposium, Baylor College of Medicine, Houston, TX, December 4, 1997.

"The Internet: The Next Generation," Smithsonian Campus on the Mall, Washington, DC, April 16, 1997.

"The Evolving Computing Continuum," FACS Interactive Newspapers Conference, Newspaper Editors of America, Houston, TX, February 15, 1997.

"Supercomputing and the Internet/Intranet into the 21st Century" China Education and Research Conference, Beijing, China, January 18, 1997.

"The High Performance Computing Continuum" CrayQuest, Singapore, January 16, 1997.

"The Supercomputer Centers Program," California Council on Science and Technology, Santa Cruz, CA, May 22, 1996.

"From Research Projects to Consumer Products: A Few Speculative Examples," Society for Information Display '96, San Diego, CA, May 15, 1996.

"Global Perspectives on High-performance Computing," Keynote Address, DoD Senior Technologists Conference, Washington, DC, April 2, 1996.

"Life on the Information Highway," Futurist Roundtable, City of the Future meeting, San Diego, CA, December 14, 1995.

"Speculation on the Future of High-performance Computing," PetaFLOPS Summer Workshop, Bodega Bay, CA, August 14, 1995.

"The Future of the NSF Funded Supercomputer Centers," National Science Foundation, Arlington, VA, August 2, 1995.

"The Evolution of a National Laboratory for Computational Science and Engineering," San Diego Software Industry Council, La Jolla, CA, July 13, 1995.

"The NSF Centers' Program: A Director's Perspective," presentation to the Computer Research Association Board meeting, Seattle, WA, July 11, 1995.

"The Evolution of a National Laboratory for Computational Science and Engineering," Computing in the Social Sciences 1995, San Diego Supercomputer Center, La Jolla, CA, June 18, 1995.

"From Today's Research Lab to Tomorrow's Desktop," News Industries and Journalism/Preparing for 2010 Conference, RAND Institute, Santa Monica, CA, June 13, 1995.

"The Evolution of a National Laboratory for Computational Science and Engineering," University of California, San Diego, School of Engineering Annual Research Review, La Jolla, CA, May 4, 1995.

"Allocating the Computing Resources of National Labs," Panel Chair, DoE High Performance Computing Conference, Salishan, OR, April 23-29, 1995.

"The NSF Centers' Program: A Director's Perspective," presentation to the Hayes Task Force on the Future of the NSF Supercomputer Center's Program, Washington, DC, March 9, 1995.

"Where Do I Go From Here?" Information Technologies and Doing Business on the Internet Symposium organized by UCSD/CONNECT, the Foundation for Enterprise Development, and the Software Industry Council, La Jolla, CA, February 8, 1995.

"Future of Telecommunications Policy in San Diego," Panel discussion, The Future of Computer Networking and Telecommunications in San Diego Symposium, San Diego, CA, January 27, 1995.

"Trends in High-performance Computing," Swedish Supercomputer High Speed Network SCnet, Stockholm, Sweden, September 20-21, 1994.

"Trends in High-performance Computing and the Global Information Infrastructure," SARA, Amsterdam, Netherlands, April 1994.

"High-performance Computing Strategy in the U.S.," Sup'Eur 1993, Vienna, Austria, September 1993.

"Applications of High-performance Computing," Fujitsu International Supercomputer Users' Group (FISUG), Santiago de Campostelo, Spain, September 1993.

"The Supercomputer Era," presented at the 7th Annual Governor's Symposium on High Technology, "Computational Science: A New High-tech Approach to Science & Engineering," Kauai, HI, November 11, 1991.

"Advanced Computer-Based Visualization and Simulation," Chair, sponsored by National Research Council, Irvine, CA, November 6, 1991.

"Trends and Issues in High Performance Computing," Panel Chair, EDUCOM '91, San Diego, CA, October 18, 1991.

"Trends in High-performance Computing," keynote speaker, Workshop on a Swedish Supercomputer High-speed Network - SSCnet, Knivsta, Sweden, September 25, 1991.

"Trends in High-performance Computing," 4th Annual Idaho National Engineering Laboratory (INEL) Computing Symposium, Idaho Falls, ID, September 10, 1991.

"Implications for Scientific Research," Session Chair, Symposium on Gigabit Networks, Washington DC, July 16, 1991.

"Trends in High Performance Computing," presented at the Marine Technology Society Symposium: Science and Technology for a New Oceans Decade, Washington, DC, September 26, 1990.

"The National Science Foundation Supercomputing Initiative: A Partnership with Industry," presented at Supercomputing World `90, San Diego, CA, June 20, 1990.

"The Supercomputer Era," Armed Forces Communications & Electronics Association (AFCEA), San Diego, CA, April 17, 1990.

"A Customer's Perspective of Cray Research and the Supercomputer Industry," International Cray Analyst meeting, Minneapolis, MN, March 27, 1990.

"The Supercomputer Era," NSF I/UC Research Center for Ultra High Speed Integrated Circuits and Systems (ICAS), University of California, San Diego, December 5, 1989.

"The Supercomputer Era," TRW Forum Colloquium, Redondo Beach, CA, October 19, 1989.

ACT ONE Symposium, Panel member, 25th Anniversary of the ARPAnet, University of California, Los Angeles, CA, August 18, 1989.

"The Supercomputer Era," Supercomputer Symposium at INTEVEP, Caracas, Venezuela, July 12, 1989.

"Supercomputing Environment and the San Diego Supercomputer Center," NATO Advanced Research Workshop on Supercomputing, Trondheim, Norway, June 19, 1989.

"What Supercomputers Can Do," The Frontiers of Science and Technology, the President's Circle, National Academy of Sciences, Washington, DC, June 17, 1989.

"Supercomputing from a San Diego Supercomputing Center Perspective," Australian Bureau of Meteorology, Australian Computer Society, and the IEEE, Melbourne, Australia, December 16, 1988.

"Building Successful Supercomputing Centers," First National Australian Supercomputing Conference hosted by the Australian National University, Canberra, Australia, December 14, 1988.

"Supercomputers," IEEE 27th Videoconference, Indianapolis, IN, December 7, 1988.

"Planning and Implementing a New Supercomputing Center," Supercomputing '88, Orlando, FL, November 18, 1988.

"The Supercomputer Era," presented at Supercomputer Forum '88, Ottawa Carleton Research Institute and the SUPERNET Consortium, Ottawa, Ontario, Canada, November 9, 1988.

"Encounters of a Third Mode," Rueben H. Fleet Space Theater for National Spaceweek 1988, San Diego, CA, July 20, 1988.

"Supercomputers and the Solution of Aerospace Problems," AIR/SPACE America ’88, San Diego CA, May 18, 1988.

"Supercomputer and Engineering Workstations: Practical Applications," Intelligent Mapping '88, Chicago, IL, May 4, 1988.

"Managing Connections to External Networks: The Other Side," NET SHOW SPRING '88, Boulder, CO, March 28, 1988.

"The Supercomputer Era," Cray Research, Inc. Aerospace Application Symposium, Los Angeles, CA, February 9, 1988.

"The San Diego Supercomputer Center – Past, Present and Future," DECUS, Anaheim, CA, December 10, 1987.

"Status of the San Diego Supercomputer Center," Second International Conference on Supercomputing, Santa Clara, CA, May 6, 1987.

"Education and Training at the San Diego Supercomputer Center," Second International Conference on Supercomputing, Santa Clara, CA, May 5, 1987.

"Supercomputers: The Third Mode of Science," Technology Consortium Supercomputing Videoconference, San Diego State University, San Diego, CA, May 4, 1987.

"Responding to the NSF Initiative: The San Diego Supercomputer Center," Cray User Group meeting, New York, NY, April 23, 1987.

"Critical Factors for Successful Implementation," Corporate Leaders Forum, Hilton Head Island, SC, March 20, 1987.

"The San Diego Supercomputer Center," Supercomputers: A Key to U.S. Scientific, Technological and Industrial Preeminence, Florida State University, Tallahassee, FL, June 1985.