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HAP: Hybrid-Memory-Aware Partition in Shared Last-Level Cache

机译:HAP:共享最后级别缓存中的混合内存感知分区

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Data-center servers benefit from large-capacity memory systems to run multiple processes simultaneously. Hybrid DRAM-NVM memory is attractive for increasing memory capacity by exploiting the scalability of Non-Volatile Memory (NVM). However, current LLC policies are unaware of hybrid memory. Cache misses to NVM introduce high cost due to long NVM latency. Moreover, evicting dirty NVM data suffer from long write latency. We propose hybrid memory aware cache partitioning to dynamically adjust cache spaces and give NVM dirty data more chances to reside in LLC. Experimental results show Hybrid-memory-Aware Partition (HAP) improves performance by 46.7% and reduces energy consumption by 21.9% on average against LRU management. Moreover, HAP averagely improves performance by 9.3% and reduces energy consumption by 6.4% against a state-of-the-art cache mechanism.
机译:数据中心服务器受益于大容量存储器系统以同时运行多个进程。 通过利用非易失性存储器(NVM)的可扩展性,Hybrid DRAM-NVM内存对于增加内存容量,可以提高内存容量。 但是,当前的LLC策略不知道混合内存。 缓存未遗漏NVM由于长NVM延迟而引入高成本。 此外,驱逐脏的NVM数据遭受长写入延迟。 我们提出了混合内存感知缓存分区,以动态调整缓存空间,并提供NVM脏数据更多机会驻留在LLC中。 实验结果表明杂交内存记忆感知分区(HAP)提高性能46.7%,并将能源消耗降低21.9%,平均防止LRU管理。 此外,HAP平均提高了9.3%的性能,并将能耗降低6.4%,反对最先进的高速缓存机制。

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