He has been with IBM since 1978 and holds four IBM patents. Prior to joining IBM, he did real-time programming at NASA's Goddard Space Flight Center for the Space Shuttle.More Articles From Clark GoodrichJerry Zheng is a staff software developer in Java Just-in-Time Compiler development who is leading the effort of supporting transactional memory in IBM J9 JVM. He joined IBM in 2008 and has been working on exploiting new System z hardware features in a dynamic compiler. More Articles From Jerry ZhengMarcel Mitran is a senior technical staff member with IBM’s compiler team. He’s the lead architect for Java on System z, and has spent more than a decade developing dynamic and static compilation technology for System z. More Articles From Marcel Mitran