Overcoming the Memory Wall with CXL-Enabled SSDs

Shao Peng Yang, Minjae Kim, Sanghyun Nam, Juhyung Park, Jin Yong Choi, Eyee Hyun Nam, Eunji Lee, Sungjin Lee, Bryan S. Kim

Research output: Chapter in Book/Entry/PoemConference contribution

1 Scopus citations

Abstract

This paper investigates the feasibility of using inexpensive flash memory on new interconnect technologies such as CXL (Compute Express Link) to overcome the memory wall. We explore the design space of a CXL-enabled flash device and show that techniques such as caching and prefetching can help mitigate the concerns regarding flash memory’s performance and lifetime. We demonstrate using real-world application traces that these techniques enable the CXL device to have an estimated lifetime of at least 3.1 years and serve 68–91% of the memory requests under a microsecond. We analyze the limitations of existing techniques and suggest system-level changes to achieve a DRAM-level performance using flash.

Original languageEnglish (US)
Title of host publicationProceedings of the 2023 USENIX Annual Technical Conference, ATC 2023
PublisherUSENIX Association
Pages601-617
Number of pages17
ISBN (Electronic)9781939133359
StatePublished - 2023
Event2023 USENIX Annual Technical Conference, ATC 2023 - Boston, United States
Duration: Jul 10 2023Jul 12 2023

Publication series

NameProceedings of the 2023 USENIX Annual Technical Conference, ATC 2023

Conference

Conference2023 USENIX Annual Technical Conference, ATC 2023
Country/TerritoryUnited States
CityBoston
Period7/10/237/12/23

ASJC Scopus subject areas

  • General Computer Science

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