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arXiv 2204.01679cs.AR
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多核安全关键系统中末级Cache分区的可预测共享

Predictable Sharing of Last-level Cache Partitions for Multi-core Safety-critical Systems

Zhuanhao Wu, Hiren Patel

摘要:

末级缓存(LLC)分区是一种在多核安全关键系统中,当核访问共享LLC时提供时间隔离和低最坏情况延迟(WCL)界限的技术。高速缓存分区的典型方法涉及将单独的分区分配给不同的核。对这种方法的一个主要批评是它对高速缓存存储的利用率很低。如今集成大量内核的趋势加剧了这个问题,因此我们不得不考虑使用共享LLC分区来进行有效部署。这项工作提出了一种方法,在多个核心之间共享LLC分区,同时能够提供低WCL界限。

英文摘要:

Last-level cache (LLC) partitioning is a technique to provide temporal isolation and low worst-case latency (WCL) bounds when cores access the shared LLC in multicore safety-critical systems. A typical approach to cache partitioning involves allocating a separate partition to a distinct core. A central criticism of this approach is its poor utilization of cache storage. Today's trend of integrating a larger number of cores exacerbates this issue such that we are forced to consider shared LLC partitions for effective deployments. This work presents an approach to share LLC partitions among multiple cores while being able to provide low WCL bounds.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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