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首页> 外文期刊>Electronics Letters >Reducing false conflicts in signature-based eager hardware transactional memory
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Reducing false conflicts in signature-based eager hardware transactional memory

机译:减少基于签名的热切硬件事务内存中的错误冲突

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摘要

The use of a conflict-address buffer (CAB) for reducing false conflicts in signature-based eager hardware transactional memory (HTM) is proposed. On the basis of the observation that most conflicts occur when accessing a very small set of addresses, the CAB captures those addresses that generate a conflict at runtime and performs more precise conflict detection for the captured addresses. Using the CAB can reduce false conflicts and the associated unnecessary transaction aborts and, consequently, improve the performance of the multicore processors that implement the signature-based eager HTM. When running the Stanford transactional applications for multiprocessing (STAMP) benchmark on a 16-core processor that implements the LogTM-SE, the speedup (decrease in execution time) achieved with a 4-entry CAB is 9.4% on average.
机译:提出了使用冲突地址缓冲区(CAB)来减少基于签名的渴望硬件事务存储(HTM)中的错误冲突。基于观察到大多数冲突是在访问非常小的地址集时发生的,CAB会捕获那些在运行时生成冲突的地址,并对捕获的地址执行更精确的冲突检测。使用CAB可以减少虚假冲突和相关的不必要事务中止,因此可以提高实现基于签名的渴望HTM的多核处理器的性能。在实现LogTM-SE的16核处理器上运行斯坦福多事务事务处理应用程序(STAMP)基准时,使用4项CAB所实现的加速(执行时间的减少)平均为9.4%。

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