DOJ

Yong hun Eom, Stephen Yang, James C. Jenista, Brian Demsky
2012 Proceedings of the 17th ACM SIGPLAN symposium on Principles and Practice of Parallel Programming - PPoPP '12  
We present Dynamic Out-of-Order Java (DOJ), a dynamic parallelization approach. In DOJ, a developer annotates code blocks as tasks to decouple these blocks from the parent execution thread. The DOJ compiler then analyzes the code to generate heap examiners that ensure the parallel execution preserves the behavior of the original sequential program. Heap examiners dynamically extract heap dependences between code blocks and determine when it is safe to execute a code block. Previous work on
more » ... evious work on Out-of-Order Java used static analysis to allow code blocks to possibly execute out of order, similar to instructions in a super scalar processor. DOJ elides much of the complex and expensive static analysis in Out-of-Order Java. We have implemented DOJ and evaluated it on twelve benchmarks. We achieved an average compilation speedup of 31.15× over OoOJava and an average execution speedup of 12.73× over sequential versions of the benchmarks.
doi:10.1145/2145816.2145828 dblp:conf/ppopp/EomYJD12 fatcat:5n6w4ythtjc5lktm7ew6oed2me