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LightPC: hardware and software co-design for energy-efficient full system persistence

Published: 11 June 2022 Publication History

Abstract

We propose LightPC, a lightweight persistence-centric 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 4.3X, on average.

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  • (2024)Compiler-Directed Whole-System Persistence2024 ACM/IEEE 51st Annual International Symposium on Computer Architecture (ISCA)10.1109/ISCA59077.2024.00074(961-977)Online publication date: 29-Jun-2024
  • (2023)Realizing Strong Determinism Contract on Log-Structured Merge Key-Value StoresACM Transactions on Storage10.1145/358269519:2(1-29)Online publication date: 25-Mar-2023

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cover image ACM Conferences
ISCA '22: Proceedings of the 49th Annual International Symposium on Computer Architecture
June 2022
1097 pages
ISBN:9781450386104
DOI:10.1145/3470496
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  • (2024)Compiler-Directed Whole-System Persistence2024 ACM/IEEE 51st Annual International Symposium on Computer Architecture (ISCA)10.1109/ISCA59077.2024.00074(961-977)Online publication date: 29-Jun-2024
  • (2023)Realizing Strong Determinism Contract on Log-Structured Merge Key-Value StoresACM Transactions on Storage10.1145/358269519:2(1-29)Online publication date: 25-Mar-2023

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