Energy reduction in multiprocessor systems using transactional memory

Tali Moreshet, R.I. Bahar, M. Herlihy
2005 ISLPED '05. Proceedings of the 2005 International Symposium on Low Power Electronics and Design, 2005.  
The emphasis in microprocessor design has shifted from high performance, to a combination of high performance and low power. Until recently, this trend was mostly true for uniprocessors. In this work we focus on new energy consumption issues unique to multiprocessor systems: synchronization of accesses to shared memory. We investigate and compare different means of providing atomic access to shared memory, including locks and lock-free synchronization (i.e., transactional memory), with respect
more » ... o energy as well as performance. We show that transactional memory has an advantage in terms of energy consumption over locks, but that this advantage largely depends on the system architecture, the contention level, and the policy of conflict resolution.
doi:10.1109/lpe.2005.195542 fatcat:ohnr3nfnijgabgivvyeipmgcfu