- Research/Lifetime Achievement Awards:
- University Professor Emeritus, Board of Visitors, George Mason University, June 2022.
- 2017 Outstanding Faculty Award, State Council of Higher Education of Virginia (SCHEV).
- 2016 Outstanding Faculty Award Finalist, State Council of Higher Education of Virginia (SCHEV).
- Best Paper Award for the paper "Dynamic Derivation of Analytical Performance Models in Autonomic Computing Environments," 2014 Computer Measurement Group Conference, Atlanta, Georgia, November 3-6, 2014.
- Elevated to Fellow of the IEEE for "contributions to research and education in performance evaluation of computer systems," 2014.
- 2014 Outstanding Faculty Award Finalist, State Council of Higher Education of Virginia (SCHEV). (28 finalists out of 115 nominations)
- Best Paper Award for the paper "A Performance Model for Core System Monitoring Functions," 2013 Computer Measurement Group Conf., San Diego, CA, November 5-8, 2013.
- University Professor, George Mason University, recognition given to "men and women of unusually great stature and eminence from the world of national and international achievement."
January 2012.
- Outstanding Paper Award for the paper "A Scalable Architecture for Countering Network-Centric Insider Threats," Fifth International Conference on Emerging Security Information, Systems and Technologies (SECURWARE), 2011, Nice/Saint Laurent du Var, France.
- Outstanding Research Faculty Award, Volgenau School of Engineering, George Mason University, 2009. See presentation.
- Outstanding Research Award, Department of Computer Science, George Mason University, 2009.
- Honorary Member, Golden Key International Honour Society, "in recognition of outstanding scholastic achievement and excellence," inducted on November 6, 2009.
- Best paper finalist (one of three) with the paper
"Fractal Characterization of Web Workloads,"
WWW 2002 Conference, Web-Engineering Track, Honolulu, Hawaii, May 7-11, 2002.
- 2001 A. A. Michelson award from the Computer
Measurement Group. A lifetime achievement award given in
recognition of "outstanding contributions to
computer metrics."
(Read the acceptance speech
and the
citation plaque.)
- Elected member of IFIP's Working Group 7.3 for
contributions to performance evaluation, 1998.
- Elevated to Fellow of the Association for Computing
Machinery (ACM) "for fundamental contributions to education and practice of computer networks and performance evaluation, and material contributions to the
establishment of a strong computing industry in Brazil," 1997.
- Best paper award for the paper "Performance
Modeling of a Unix Communications Server", 1997 Computer Measurement
Group Conference.
- Outstanding Paper Award for the paper "A
Performance Oriented Design Methodology for Large-Scale Distributed Data
Intensive Information Systems", 1995 IEEE International Conference on
Engineering of Complex Computer Systems.
- Teaching Awards:
- David J. King Teaching Award, given annually to a faculty member who has made significant, long-term contributions to the overall education excellence
of the university, 2021.
- Teaching Excellence Award, George Mason University,
2000.
- Outstanding Teaching Faculty Award, The Volgenau School of Information
Technology and Engineering, George Mason University, 1999.
- Service Awards:
- Recognition of Service Award, IEEE Computer Society,
in appreciation of contributions as the General Chair of the IEEE International
Conference on Cloud Computing (ICCAC), September 2015.
- Distinguished Service Award, Computer Science Department,
Volgenau School of Engineering, for services as Senior Associate Dean of the school,
May 2012.
- Recognition of Service Award, Association for Computing
Machinery, for contributions to ACM as the General Chair of
the 2007 Federated Computing Research Conference, June 2007.
- Recognition of Service Award, Association for Computing
Machinery, for contributions to ACM as the General Chair of
ACM Conference on Electronic Commerce, June 2003.
- Outstanding Reviewer, IEEE Internet Computing, 2001.
- Recognition of Service Award, Association for Computing
Machinery, for contributions to ACM as the program co-chair
of WOSP'00 - Second International Workshop on Software
and Performance, September 2000.
- Recognition of Service Award, Association for Computing
Machinery, for contributions to ACM as the General Chair of ACM Sigmetrics
Conference, May 1999.