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Managing Resource Limitation of Best-Effort HTM

机译:管理尽力而为HTM的资源限制

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The first release of hardware transactional memory (HTM) as commodity processor posed the question of how to efficiently handle its best-effort nature. In this paper we present Part-HTM, a hybrid transactional memory protocol that solves the problem of transactions aborted due to the resource limitations (space/time) of current best-effort HTM. The basic idea of Part-HTM is to partition those transactions into multiple sub-transactions, which can likely be committed in hardware. Due to the eager nature of HTM, we designed a low-overhead software framework to preserve transaction’s correctness (with and without opacity) and isolation. Part-HTM is effective: our evaluation study confirms that its performance is the best in all tested cases, except for those where HTM cannot be outperformed. However, in such a workload, Part-HTM still performs better than all other software and hybrid competitors.
机译:作为商品处理器的硬件事务存储(HTM)的第一版提出了一个问题,即如何有效地处理其最大努力。在本文中,我们提出了Part-HTM,它是一种混合事务存储协议,用于解决由于当前尽力而为HTM的资源限制(空间/时间)而导致事务中止的问题。 Part-HTM的基本思想是将这些事务划分为多个子事务,这些子事务很可能在硬件中提交。由于HTM的热切需求,我们设计了一种开销较低的软件框架,以保持交易的正确性(有无不透明性)和隔离性。 Part-HTM是有效的:我们的评估研究确认,在所有测试案例中,HTM的性能都是最好的,除非HTM无法胜过。但是,在这样的工作负载下,Part-HTM的性能仍然优于所有其他软件和混合竞争对手。

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