Chameleon: Versatile and practical near-DRAM acceleration architecture for large memory systems

Hadi Asghari-Moghaddam, Young Hoon Son, Jung Ho Ahn, Nam Sung Kim

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

Abstract

The performance of computer systems is often limited by the bandwidth of their memory channels, but further increasing the bandwidth is challenging under the stringent pin and power constraints of packages. To further increase performance under these constraints, various near-DRAM acceleration (NDA) architectures, which tightly integrate accelerators with DRAM devices using 3D/2.5D-stacking technology, have been proposed. However, they have not prevailed yet because they often rely on expensive HBM/HMC-like DRAM devices which also suffer from limited capacity, whereas the scalability of memory capacity is critical for some computing segments such as servers. In this paper, we first demonstrate that data buffers in a load-reduced DIMM (LRDIMM), which is originally developed to support large memory systems for servers, are supreme places to integrate near-DRAM accelerators. Second, we propose Chameleon, an NDA architecture that can be realized without relying on 3D/2.5D-stacking technology and seamlessly integrated with large memory systems for servers. Third, we explore three microarchitectures that abate constraints imposed by taking LRDIMM architecture for NDA. Our experiment demonstrates that a Chameleon-based system can offer 2.13 χ higher geo-mean performance while consuming 34% lower geo-mean data transfer energy than a system that integrates the same accelerator logic within the processor.

Original languageEnglish (US)
Title of host publicationMICRO 2016 - 49th Annual IEEE/ACM International Symposium on Microarchitecture
PublisherIEEE Computer Society
ISBN (Electronic)9781509035083
DOIs
StatePublished - Dec 14 2016
Event49th Annual IEEE/ACM International Symposium on Microarchitecture, MICRO 2016 - Taipei, Taiwan, Province of China
Duration: Oct 15 2016Oct 19 2016

Publication series

NameProceedings of the Annual International Symposium on Microarchitecture, MICRO
Volume2016-December
ISSN (Print)1072-4451

Other

Other49th Annual IEEE/ACM International Symposium on Microarchitecture, MICRO 2016
CountryTaiwan, Province of China
CityTaipei
Period10/15/1610/19/16

ASJC Scopus subject areas

  • Hardware and Architecture

Fingerprint Dive into the research topics of 'Chameleon: Versatile and practical near-DRAM acceleration architecture for large memory systems'. Together they form a unique fingerprint.

Cite this