Co-organizer, "Workshop on Parallel Programming on Accelerator Clusters (PPAC11)," Austin, TX, September 2011, held in conjunction with IEEE Cluster 2011.
Co-organizer, "Workshop on Parallel Programming and Applications on Accelerator Clusters (PPAAC10)," Heraklion, Crete, September 2010, held in conjunction with IEEE Cluster 2010.
Co-organizer, "Workshop on Parallel Programming on Accelerator Clusters (PPAC09)," New Orleans, LA, August 2009, held in conjunction with IEEE Cluster 2009.
General chair, "17th High Performance Computing Symposium (HPC 2009)," San Diego, CA, March 2009.
Co-organizer, "Workshop on Usability in High Performance Computing," Arlington, VA, March 2005, sponsored by DOD HPC Modernization Program.
Co-organizer, "Minisymposium on Computational Materials Science," Washington, DC, September 2001, held in conjunction with the First SIAM Conference on Computational Science & Engineering.
Co-organizer, "Minisymposium on Component Architectures for High Performance Scientific Computing," Portsmouth, VA, March 2001, held in conjunction with the Tenth SIAM Conference on Parallel Processing for Scientific Computing.
Co-organizer, "Workshop on Scalable Libraries and Problem Solving Environments," West Lafayette, IN, 1995.