[ICCD] A High-Performance Processing-in-Memory Accelerator for Inline …

​Abstract​

In data centers, inline data deduplication which eliminates redundant data on the fly, is crucial to significantly reduce storage cost. However, it causes substantial performance and energy overhead due to a large number of memory accesses in the conventional GPU. In this paper, we propose a high-performance processing-in-memory accelerator for inline data deduplication, called Deduplication Unit (DU) to reduce the latency and power consumption. We place the DUs in a base die or core dies of a 3D stacked memory to improve performance. Our simulation results show that the DUs in the base die reduce the latency and processing unit power consumption by 17.3% and 45.5%, on average, respectively, compared to the conventional GPU. In addition, in our thermal simulation, peak temperature of the DU is still lower than the threshold temperature. ​