LightPC: Hardware and Software Co-Design for Energy-Efficient Full System Persistence

Sangwon Lee, Miryeong Kwon, Gyuyoung Park, Myoungsoo Jung

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

We propose LightPC, a lightweight persistencecentric platform to make the system robust against power loss. LightPC consists of hardware and software subsystems, each being referred to as open-channel PMEM (OC-PMEM) and persistence-centric OS (PecOS). OC-PMEM removes physical and logical boundaries in drawing a line between volatile and nonvolatile data structures by unshackling new memory media from conventional PMEM complex. PecOS provides a single execution persistence cut to quickly convert the execution states to persistent information in cases of a power failure, which can eliminate persistent control overhead. We prototype LightPC's computing complex and OC-PMEM using our custom system board. PecOS is implemented based on Linux 4.19 and Berkeley bootloader on the hardware prototype. Our evaluation results show that OC-PMEM can make user-level performance comparable with a DRAM-only non-persistent system, while consuming 73% lower power and 69% less energy. LightPC also shortens the execution time of diverse HPC, SPEC, and In-memory DB workloads, compared to traditional persistent systems by 4.3×, on average.

Original languageEnglish
Title of host publicationISCA 2022 - Proceedings of the 49th Annual International Symposium on Computer Architecture
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages289-305
Number of pages17
ISBN (Electronic)9781450386104
DOIs
Publication statusPublished - 2022 Jun 18
Event49th IEEE/ACM International Symposium on Computer Architecture, ISCA 2022 - New York, United States
Duration: 2022 Jun 182022 Jun 22

Publication series

NameProceedings - International Symposium on Computer Architecture
ISSN (Print)1063-6897

Conference

Conference49th IEEE/ACM International Symposium on Computer Architecture, ISCA 2022
Country/TerritoryUnited States
CityNew York
Period22/6/1822/6/22

Bibliographical note

Publisher Copyright:
© 2022 Copyright held by the owner/author(s). Publication rights licensed to ACM.

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture

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