Sky$^ε$-Tree: Embracing the Batch Updates of B$^ε$-trees through Access Port Parallelism on Skyrmion Racetrack Memory

Yu-Shiang Tsai, Shuo-Han Chen*, Martijn Noorlander, Kuan-Hsun Chen

*Corresponding author for this work

Research output: Working paperPreprintAcademic

51 Downloads (Pure)

Abstract

Owing to the characteristics of high density and unlimited write cycles, skyrmion racetrack memory (SK-RM) has demonstrated great potential as either the next-generation main memory or the last-level cache of processors with non-volatility. Nevertheless, the distinct skyrmion manipulations, such as injecting and shifting, demand a fundamental change in widely-used memory structures to avoid excessive energy and performance overhead. For instance, while B{\epsilon}-trees yield an excellent query and insert performance trade-off between B-trees and Log-Structured Merge (LSM)-trees, the applicability of deploying B{\epsilon}-trees onto SK-RM receives much less attention. In addition, even though optimizing designs have been proposed for B+-trees on SK-RM, those designs are not directly applicable to B{\epsilon}-trees owing to the batch update behaviors between tree nodes of B{\epsilon}-trees. Such an observation motivates us to propose the concept of Sky{\epsilon}-tree to effectively utilize the access port parallelism of SK-RM to embrace the excellent query and insert performance of B{\epsilon}-trees. Experimental results have shown promising improvements in access performance and energy conservation.
Original languageEnglish
PublisherArXiv.org
DOIs
Publication statusPublished - 5 Jul 2024

Keywords

  • cs.AR
  • cs.DC
  • D.4.2; D.4.8

Fingerprint

Dive into the research topics of 'Sky$^ε$-Tree: Embracing the Batch Updates of B$^ε$-trees through Access Port Parallelism on Skyrmion Racetrack Memory'. Together they form a unique fingerprint.

Cite this