Conference Chairs, Program Committees, Session Chairs:

1. Steering Committee Member and General Vice Chair, IEEE International Parallel and Distributed Processing Symposium, April 25 - 29, 2006, Rhodes Island, Greece.
2. Steering Committee Member and General Vice Chair, IEEE International Parallel and Distributed Processing Symposium, April 4-8, 2005, Denver, Colorado.
3. Steering Committee and Program Committee, IEEE Int'l Workshop on Computer Architecture for Machine Perception, July 4 - 6, 2005, Palermo, Italy
4. Program Committee, International Conference on Pattern Recognition, August 2004, Cambridge UK, 23-26
5. Steering Committee Member and General Vice Chair, IEEE International Parallel and Distributed Processing Symposium, April 22-26 of 2004, Santa Fe, New Mexico.
6. Steering Committee Member and General Vice Chair (Workshops), IEEE International Parallel and Distributed Processing Symposium, April 22-26 of 2003, Nice, France.
7. General Vice Chair (Workshops), IEEE International Parallel and Distributed Processing Symposium, April 15-19 of 2002, Fort Lauderdale, FL.
8. General Vice Chair (Workshops), IEEE International Parallel and Distributed Processing Symposium, April 24 -29 of 2001, San Francisco, CA.
9. Program Committee Member, International Workshop on Computer Architectures for Machine Perception Workshop, to be held Sept. 11-13, Padua, Italy.
10. Co-chair (with Jospeh Ja'Ja', Univ. of Maryland), IEEE International Parallel and Dsitributed Processing Symposium, to be held in May 1-5, 2000, Cancun, Mexico
11. Co-Chair (with Jose Rolim, Univ. of Geneva), IEEE International Parallel Processing Symposium / Symposium on Parallel and Distributed Processing, April 12-16, 1999, San Juan, Puerto Rico
12. Program Committee Member, Heterogeneous Computing Workshop, held in conjunction with the International Parallel Processing Symposium / Symposium on Parallel and Distributed Processing, April 12-16, 1999, San Juan, Puerto Rico
13. General Chair, IEEE Symposium on the Frontiers of Massively Parallel Processing, February 21-25, 1999, Annapolis, MD
14. Program Committee Member, Heterogeneous Computing Workshop, held in conjunction with the International Parallel Processing Symposium / Symposium on Parallel and Distributed Processing, March 30, 1998, Orlando, FL
15. Program Committee Member, Workshop on Embedded High Performance Computing, held in conjunction with the International Parallel Processing Symposium / Symposium on Parallel and Distributed Processing, March 30, 1998, Orlando, FL
16. Conference Chair for IEEE Computer Architectures for Machine Perception Workshop, October, 1997, Boston, MA
17. Program Committee Member, Heterogeneous Computing Workshop, held in conjunction with the International Parallel Processing Symposium, April 1-5, 1997, Geneva, Switzerland
18. Program Committee Member, Embedded HPC Systems and Applications, held in conjunction with the International Parallel Processing Symposium, April 1-5, 1997, Geneva, Switzerland
19. Program Committee member, IEEE 3rd Int'l Conf. on High Performance Computing, Dec. 19-22, 1996, Trivandrum, India
20. Publicity Chair and Local Arrangements Co-Chair for International Conference on Parallel Architectures and Compilation Techniques, October 21-23, 1996, Boston, MA
21. Program Committee Member, Workshop on Reconfigurable Architectures, held in conjunction with the International Parallel Processing Symposium, April 16, 1996, Honolulu, Hawaii
22. Publicity Co-chair International Symposium on Parallel Architectures and Networks, June 12-14, 1996, Beijing, China
23. Program Committee Member, IEEE International Parallel Processing Symposium, Santa Barbara, CA, April, 1995.
24. Program and Steering Committee Member, IEEE Computer Architecture for Machine Perception Workshop, Como, Italy, September, 1995.
25. Program Committee Member, IEEE Heterogeneous Computing Workshop, Cancun, Mexico, April, 1994
26. Program Committee Member, IEEE International Conference on Pattern Recognition, Jerulasem, Israel, October, 1994.
27. Program Committee Member, IEEE Computer Architectures for Machine Perception Workshop, New Orleans, LA, December, 1993.
28. Program Committee Member, Associative Processing and Architectures Workshop, Syracuse, NY, July, 1993.
29. Program Committee Member, IEEE Computer Vision and Pattern Recognition Conference, June, 1992
30. Program Committee Member, International Conference on Pattern Recognition, Atlantic City, NJ, June, 1990
31. Session Organizer and Chair, Next Generation Architectures Integrating Sensory and Symbolic Processing, IEEE International Conference on Pattern Recognition, Atlantic City, NJ, June, 1990
32. Session Organizer and Chair, Tools for Image Understanding with an Architectural Perspective, IEEE International Conference on Pattern Recognition, Atlantic City, NJ, June, 1990
33. Workshop Chair, DARPA Image Understanding Benchmark Workshop, Hartford, CT, October, 1988 (also organized and chaired four sessions and two panels)