NDLI: Adaptive Bandwidth Management for Performance-Temperature Trade-offs in Heterogeneous HMC+DDRx Memory

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Adaptive Bandwidth Management for Performance-Temperature Trade-offs in Heterogeneous HMC+DDRx Memory

Content Provider	ACM Digital Library
Author	Jabbarvand Behrouz, Reyhaneh Chorney, Michael Homayoun, Houman Khavari Tavana, Mohammad Hajkazemi, Mohammad Hossein
Abstract	High fabrication cost per bit and thermal issues are the main reasons that prevent architects from using 3D-DRAM alone as the main memory. In this paper we address this issue by proposing a heterogeneous memory system that combines a DDRx DRAM with an emerging 3D hybrid memory cube (HMC) technology. Bandwidth and temperature management are the challenging issues for such heterogeneous memory architecture. To address these challenges, first we introduce a memory page allocation policy for the heterogeneous memory system to maximize performance. Then, using the proposed memory page allocation policy, we propose a temperature-aware algorithm that adaptively distributes the requested bandwidth between HMC and DDRx DRAM to reduce the thermal hotspot while maintaining high performance. The results show that the proposed memory page allocation policy can utilize the memory bandwidth close to 99% of the ideal bandwidth utilization. Moreover our temperate-aware bandwidth adaptation reduces the average steady-state temperature of the HMC hotspot across various workloads by $4.5^{o}K$ while incurring 2.5% performance overhead.
Starting Page	391
Ending Page	396
Page Count	6
File Format	PDF
ISBN	9781450334747
DOI	10.1145/2742060.2742070
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2015-05-20
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Temperature Bandwidth Heterogeneous memories Hmc
Content Type	Text
Resource Type	Article

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