事务存储系统中PGHB冲突检测算法研究  

Research on the PGHB Conflict Detection Algorithm in Transactional Memory Systems

作　　者：窦强[1] 王勇[1] 

机构地区：[1]国防科学技术大学计算机学院,湖南长沙410073

出　　处：《计算机工程与科学》2010年第1期120-122,131,共4页Computer Engineering & Science

摘　　要：事务存储系统是一种全新的多核体系结构,为并行编程提供了一个简洁高效的编程环境。基于Signature的冲突检测算法是事务存储系统中很有前景的一种冲突检测方法,其误判率直接影响系统性能。GHB算法是一种优秀的冲突检测算法,具有较低的误判率,但硬件实现开销较大。本文对GHB冲突检测算法进行进一步改进,提出了一种PGHB算法。与GHB算法相比,PGHB算法在硬件开销和误判率两者之间取得了更好的折衷。Transactional memory is a new multiprocessor architecture intended to make parallel programming easy and efficient. Signature-based conflict detection is a promising approach in transactional memory systems and its rate of false positive has much influence on its performance. The GHB algorithm is an excellent algorithm with a lower false positive rate, hut high hardware cost. In this paper, we propose an improved PGHB algorithm based on GHB. The experimental results show that our improvement gains a compromise between the hardware cost and the false positive rate.

关 键 词：事务存储 SIGNATURE 冲突检测 误判率 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]