John Mellor-Crummey, Rice Univ. John Mellor-Crummey is a Professor of Computer Science at Rice University in Houston, TX. His research focuses on software technology for high-performance parallel computing. His current research focus is tools for measurement and analysis of application performance. He leads the research and development of the HPCToolkit Performance Tools. His past work has included compilers and runtime systems for parallel computing, scalable synchronization algorithms for shared-memory multiprocessors, data race detection, techniques for execution replay of parallel programs, and techniques for network performance analysis and optimization. Mellor-Crummey has co-led development of the OMPT tools interface for OpenMP 5. He is a co-recipient of the 2006 Dijkstra Prize in Distributed Computing and a Fellow of the ACM.