Software Transactional Memory (STM) Systems have been proposed in order to make parallel programs easier to develop and verify compared to conventional lock-based programming techniques. However, conventional STMs do not scale in performance to a large number of concurrent threads for several classes of applications. While the atomicity semantics of traditional STMs greatly simplify the correct sharing of data between threads, these same atomicity semantics incur a large penalty in program execution time.
Citation:
Jaswanth Sreeram, Romain Cledat, Tushar Kumar, Santosh Pande, "RSTM : A Relaxed Consistency Software Transactional Memory for Multicores," pact, pp.428, 16th International Conference on Parallel Architecture and Compilation Techniques (PACT 2007), 2007