Issue No. 02 - July-December (2008 vol. 7)
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/L-CA.2008.10
Sevin Fide , University of California, Irvine
Stephen Jenks , University of California, Irvine
The software and hardware techniques to exploit the potential of multi-core processors are falling behind, even though the number of cores and cache levels per chip is increasing rapidly. There is no explicit communications support available, and hence inter-core communications depend on cache coherence protocols, resulting in demand-based cache line transfers with their inherent latency and overhead. In this paper, we present Software Controlled Eviction (SCE) to improve the performance of multithreaded applications running on multi-core processors by moving shared data to shared cache levels before it is demanded from remote private caches. Simulation results show that SCE offers significant performance improvement (8-28%) and reduces L3 cache misses by 88-98%.
Multi-core/single-chip multiprocessors, Support for multi-threaded execution
S. Jenks and S. Fide, "Proactive Use of Shared L3 Caches to Enhance Cache Communications in Multi-Core Processors," in IEEE Computer Architecture Letters, vol. 7, no. , pp. 57-60, 2008.