|Editorial Board Member: Cluster Computing and International Journal of Computational Science and Engineering.
Executive Board of the IEEE-Computer Society Technical Committee on Parallel Processing (2003-2006) - member.
Guest Editor of: Cluster Computing and International Journal of Computational Science and Engineering (2005).
General Chair of the High Performance Computing Symposium 2003 (HPC2003) - Orlando, Florida.
Co-founder of the Workshop on Challenges of Large Applications in Distributed Environments (CLADE), in conjunction with the IEEE High Performance Distributed Computing.
Program Chair of the IEEE - High Performance Distributed Computing 2003 Symposium - Workshop on Challenges of Large Applications in Distributed Environments (CLADE) 2003, Seattle.
Co-Chair of the "Adaptivity in Parallel Scientific Computing" - Dagstuhl Seminar 03211(part of the High-Level Scientific Conferences at Schloss Dagstuhl sponsored by DAAD) - Germany, May 18-23, 2003.
Member on a few NSF Review Panels for CISE-ACR, and International programs.
Stanford University: Integrating Research into the Teaching Environment Program, 2001 - program reviewer.
Steering Committee member (2003 - present) of: IEEE-HPDC Symposium - CLADE workshop ('03-06), High Performance Computing Symposium (HPC'03-06)
Program Committee (also track chair and session chair) of:|
.IEEE International Parallel and Distributed Processing Symposium (IPDPS) - Heterogeneous Computing Workshop (HCW'02).
.IEEE International Parallel and Distributed Processing Symposium (IPDPS) - Workshop on Parallel and Distributed Scientific and Engineering Computing with Applications (PDSECA'02-'06).
.International Conference on Parallel and Distributed Computing Systems (PDCS'98,'03-'05).
.International Conference on Parallel Computing Technologies (PACT2003-SHPSEC Workshop).
.International Conference on Pervasive Services (ICPS'05).
.IEEE International Conference on Cluster Computing (CLUSTER) - Workshop on Algorithms, Models, and Tools for Parallel Computing on Heterogeneous Networks (HeteroPar '03-'05).
.High Performance Computing Symposium (HPC '99-'02).
.Annual Simulation Symposium (ANS'06).
.International Conference for Parallel Processing and Applied Mathematics (PPAM '05) - Workshop on Large Scale Computations on Grids (LaSCoG'05), and others.
Senior IEEE Member and Member of ACM, SIGACT, SIGARCH, SIAM (Supercomputing), AMS, ASEE,
Upsilon Pi Epsilon (Computer Science Honor Society) and Phi Kappa Phi (Academic Honor Society).