一种支持操作系统的硬件事务内存系统

A New Hardware Transactional Memory System Design with Operating System Support

本文分析了目前提出的硬件事务内存系统在支持线程切换及迁移、内存页置换、系统调用等方面存在的问题,并提出了新的支持操作系统的实现方案DTM。DTM采用单独的面向事务处理的一致性协议来检测及仲裁事务间冲突,与传统的事务内存系统相比,DTM具有实现简单、可扩展性好及性能上的优势。

This paper summarizes the problems for the currently proposed hardware transactional memory system which supports context switch/migration, virtual memory paging, and system call issues. A new hardware transactional memory system called DTM is proposed. DTM performs transaction conflict detection through a separate protocol, which works in a similar way as the traditional directory based cache coherence protocol, but only operates on the transactional states. Test results show that DTM achieves improvement in design complexity, sealability and performance issues.