Characterizing the Thermal Feasibility of Monolithic 3D Microprocessors

Monolithic 3D (M3D) integration reduces the wire length, which eventually improves energy efficiency and performance compared to 2D integration. However, 3D integration inevitably causes higher on-chip temperature compared to 2D integration due to the increased power density as well as worse heat di...

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Main Authors: Ji Heon Lee, Young Seo Lee, Jeong Hwan Choi, Hussam Amrouch, Joonho Kong, Young-Ho Gong, Sung Woo Chung
Format: Article
Language:English
Published: IEEE 2021-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/9524684/
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author Ji Heon Lee
Young Seo Lee
Jeong Hwan Choi
Hussam Amrouch
Joonho Kong
Young-Ho Gong
Sung Woo Chung
author_facet Ji Heon Lee
Young Seo Lee
Jeong Hwan Choi
Hussam Amrouch
Joonho Kong
Young-Ho Gong
Sung Woo Chung
author_sort Ji Heon Lee
collection DOAJ
description Monolithic 3D (M3D) integration reduces the wire length, which eventually improves energy efficiency and performance compared to 2D integration. However, 3D integration inevitably causes higher on-chip temperature compared to 2D integration due to the increased power density as well as worse heat dissipation. The high on-chip temperature may offset the benefits of the M3D microprocessors due to the following reasons: 1) high on-chip temperature increases leakage power, which degrades energy efficiency. 2) the actual clock frequency is limited at run-time by frequent dynamic thermal management (DTM) invocations. In this paper, for the first time, we explore the <italic>thermal feasibility</italic> (whether it is possible to achieve high energy efficiency and performance without exceeding threshold temperature) of the M3D microprocessors depending on cooling solutions. For the thermal feasibility study, we construct an integrated framework to investigate the thermal behaviors and thermal feasibility of different types of microprocessors (M3D, 2D, and through-silicon-via based 3D (TSV-3D)) with different cooling solutions. Our thermal-aware evaluation results show that the best configuration of the M3D microprocessors reduces average energy consumption by 27.6&#x0025; compared to the 2D microprocessor at an iso-frequency (4.0GHz). In addition, at the highest clock frequencies satisfying both design and thermal constraints, the best configuration of the M3D microprocessors improves average system performance by 25.1&#x0025; and 26.0&#x0025; compared to the 2D and TSV-3D microprocessors, respectively.
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spelling doaj.art-20989edb02404bf5b3bc606e079696822022-12-21T22:37:23ZengIEEEIEEE Access2169-35362021-01-01912071512072910.1109/ACCESS.2021.31086289524684Characterizing the Thermal Feasibility of Monolithic 3D MicroprocessorsJi Heon Lee0Young Seo Lee1https://orcid.org/0000-0001-9137-8217Jeong Hwan Choi2https://orcid.org/0000-0002-6918-0236Hussam Amrouch3https://orcid.org/0000-0002-5649-3102Joonho Kong4https://orcid.org/0000-0002-9013-9561Young-Ho Gong5https://orcid.org/0000-0001-8270-7875Sung Woo Chung6https://orcid.org/0000-0001-5347-9586DRAM Design Division, Memory Solution Product Design Group, SK Hynix, Seongnam-si, Republic of KoreaDepartment of Computer Science and Engineering, Korea University, Seoul, Republic of KoreaDRAM Design Division, Memory Solution Product Design Group, SK Hynix, Seongnam-si, Republic of KoreaChair of Semiconductor Test and Reliability, University of Stuttgart, Stuttgart, GermanySchool of Electronics Engineering, Kyungpook National University, Daegu, Republic of KoreaSchool of Computer and Information Engineering, Kwangwoon University, Seoul, Republic of KoreaDepartment of Computer Science and Engineering, Korea University, Seoul, Republic of KoreaMonolithic 3D (M3D) integration reduces the wire length, which eventually improves energy efficiency and performance compared to 2D integration. However, 3D integration inevitably causes higher on-chip temperature compared to 2D integration due to the increased power density as well as worse heat dissipation. The high on-chip temperature may offset the benefits of the M3D microprocessors due to the following reasons: 1) high on-chip temperature increases leakage power, which degrades energy efficiency. 2) the actual clock frequency is limited at run-time by frequent dynamic thermal management (DTM) invocations. In this paper, for the first time, we explore the <italic>thermal feasibility</italic> (whether it is possible to achieve high energy efficiency and performance without exceeding threshold temperature) of the M3D microprocessors depending on cooling solutions. For the thermal feasibility study, we construct an integrated framework to investigate the thermal behaviors and thermal feasibility of different types of microprocessors (M3D, 2D, and through-silicon-via based 3D (TSV-3D)) with different cooling solutions. Our thermal-aware evaluation results show that the best configuration of the M3D microprocessors reduces average energy consumption by 27.6&#x0025; compared to the 2D microprocessor at an iso-frequency (4.0GHz). In addition, at the highest clock frequencies satisfying both design and thermal constraints, the best configuration of the M3D microprocessors improves average system performance by 25.1&#x0025; and 26.0&#x0025; compared to the 2D and TSV-3D microprocessors, respectively.https://ieeexplore.ieee.org/document/9524684/Monolithic 3D integrationon-chip temperaturethermal feasibilitycooling solution
spellingShingle Ji Heon Lee
Young Seo Lee
Jeong Hwan Choi
Hussam Amrouch
Joonho Kong
Young-Ho Gong
Sung Woo Chung
Characterizing the Thermal Feasibility of Monolithic 3D Microprocessors
IEEE Access
Monolithic 3D integration
on-chip temperature
thermal feasibility
cooling solution
title Characterizing the Thermal Feasibility of Monolithic 3D Microprocessors
title_full Characterizing the Thermal Feasibility of Monolithic 3D Microprocessors
title_fullStr Characterizing the Thermal Feasibility of Monolithic 3D Microprocessors
title_full_unstemmed Characterizing the Thermal Feasibility of Monolithic 3D Microprocessors
title_short Characterizing the Thermal Feasibility of Monolithic 3D Microprocessors
title_sort characterizing the thermal feasibility of monolithic 3d microprocessors
topic Monolithic 3D integration
on-chip temperature
thermal feasibility
cooling solution
url https://ieeexplore.ieee.org/document/9524684/
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