Abstract:
With the advent of on-chip digital low-dropout (DLDO) regulators, distributed on-chip voltage regulation has become increasingly promising. Environmental and operating co...Show MoreMetadata
Abstract:
With the advent of on-chip digital low-dropout (DLDO) regulators, distributed on-chip voltage regulation has become increasingly promising. Environmental and operating conditions have been demonstrated to degrade DLDO performance, which directly affects execution accuracy. The area overhead (OH) needed to compensate aging-induced voltage noise degradation can be significant. Accordingly, in this paper, the algorithmic noise tolerance of certain processor components is exploited as an area-quality control knob to trade the program output quality for area OH. Furthermore, efficient and lightweight techniques utilizing a unidirectional shift register and reduced clock pulsewidth triggering are proposed to realize a novel aging-aware (AA) DLDO to achieve a better area and quality tradeoff. Owing to the large number and distributed nature of voltage regulators, with the proposed design, both the number of regulators utilized in the system and the size of each local regulator are scalable to satisfy the needs of different applications and processor components with varying algorithmic noise tolerance. It is demonstrated through simulation of an IBM POWER8 like processor that the proposed AA design can achieve up to, respectively, 43.2% and 3x transient and steady-state performance improvement. Additionally, more than 10% area OH saving can be achieved over a 5-year period.
Published in: IEEE Transactions on Very Large Scale Integration (VLSI) Systems ( Volume: 27, Issue: 1, January 2019)
Funding Agency:
Department of Electrical Engineering, University of South Florida, Tampa, FL, USA
Longfei Wang received the B.S. degree in electronic information engineering from Southwest Jiaotong University, Chengdu, China, in 2010 and the M.S. degree in electrical engineering from Texas Tech University, Lubbock, TX, USA, in 2013. He is currently working toward the Ph.D. degree in electrical engineering at the University of South Florida, Tampa, FL, USA.
His current research interests include on-chip voltage regulati...Show More
Longfei Wang received the B.S. degree in electronic information engineering from Southwest Jiaotong University, Chengdu, China, in 2010 and the M.S. degree in electrical engineering from Texas Tech University, Lubbock, TX, USA, in 2013. He is currently working toward the Ph.D. degree in electrical engineering at the University of South Florida, Tampa, FL, USA.
His current research interests include on-chip voltage regulati...View more
Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, USA
S. Karen Khatamifard received the B.S. degree in electrical engineering from the Sharif University of Technology, Tehran, Iran, in 2013. He is currently working toward the Ph.D. degree at the University of Minnesota, Minneapolis, MN, USA.
In 2013, he joined the ALTAI Group, University of Minnesota. His current research interests include computer architecture.
S. Karen Khatamifard received the B.S. degree in electrical engineering from the Sharif University of Technology, Tehran, Iran, in 2013. He is currently working toward the Ph.D. degree at the University of Minnesota, Minneapolis, MN, USA.
In 2013, he joined the ALTAI Group, University of Minnesota. His current research interests include computer architecture.View more
Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, USA
Ulya R. Karpuzcu received the M.S. and Ph.D. degrees in electrical and computer engineering from the University of Illinois at Urbana–Champaign, Champaign, IL, USA.
She is currently an Associate Professor of Electrical and Computer Engineering at the University of Minnesota, Minneapolis, MN, USA. Her current research interests include the impact of technology on computing systems, energy-efficient computer architecture, ha...Show More
Ulya R. Karpuzcu received the M.S. and Ph.D. degrees in electrical and computer engineering from the University of Illinois at Urbana–Champaign, Champaign, IL, USA.
She is currently an Associate Professor of Electrical and Computer Engineering at the University of Minnesota, Minneapolis, MN, USA. Her current research interests include the impact of technology on computing systems, energy-efficient computer architecture, ha...View more
Department of Electrical Engineering, University of South Florida, Tampa, FL, USA
Selçuk Köse (S’10–M’12) received the B.S. degree in electrical and electronics engineering from Bilkent University, Ankara, Turkey, in 2006, and the M.S. and Ph.D. degrees in electrical engineering from the University of Rochester, Rochester, NY, USA, in 2008 and 2012, respectively.
He was at TUBITAK, Ankara, Intel Corporation, Santa Clara, CA, USA, and Freescale Semiconductor, Tempe, AZ, USA. He is currently an Associate ...Show More
Selçuk Köse (S’10–M’12) received the B.S. degree in electrical and electronics engineering from Bilkent University, Ankara, Turkey, in 2006, and the M.S. and Ph.D. degrees in electrical engineering from the University of Rochester, Rochester, NY, USA, in 2008 and 2012, respectively.
He was at TUBITAK, Ankara, Intel Corporation, Santa Clara, CA, USA, and Freescale Semiconductor, Tempe, AZ, USA. He is currently an Associate ...View more
Contents Department of Electrical Engineering, University of South Florida, Tampa, FL, USA
Longfei Wang received the B.S. degree in electronic information engineering from Southwest Jiaotong University, Chengdu, China, in 2010 and the M.S. degree in electrical engineering from Texas Tech University, Lubbock, TX, USA, in 2013. He is currently working toward the Ph.D. degree in electrical engineering at the University of South Florida, Tampa, FL, USA.
His current research interests include on-chip voltage regulation and power management.
Longfei Wang received the B.S. degree in electronic information engineering from Southwest Jiaotong University, Chengdu, China, in 2010 and the M.S. degree in electrical engineering from Texas Tech University, Lubbock, TX, USA, in 2013. He is currently working toward the Ph.D. degree in electrical engineering at the University of South Florida, Tampa, FL, USA.
His current research interests include on-chip voltage regulation and power management.View more
Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, USA
S. Karen Khatamifard received the B.S. degree in electrical engineering from the Sharif University of Technology, Tehran, Iran, in 2013. He is currently working toward the Ph.D. degree at the University of Minnesota, Minneapolis, MN, USA.
In 2013, he joined the ALTAI Group, University of Minnesota. His current research interests include computer architecture.
S. Karen Khatamifard received the B.S. degree in electrical engineering from the Sharif University of Technology, Tehran, Iran, in 2013. He is currently working toward the Ph.D. degree at the University of Minnesota, Minneapolis, MN, USA.
In 2013, he joined the ALTAI Group, University of Minnesota. His current research interests include computer architecture.View more
Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, USA
Ulya R. Karpuzcu received the M.S. and Ph.D. degrees in electrical and computer engineering from the University of Illinois at Urbana–Champaign, Champaign, IL, USA.
She is currently an Associate Professor of Electrical and Computer Engineering at the University of Minnesota, Minneapolis, MN, USA. Her current research interests include the impact of technology on computing systems, energy-efficient computer architecture, hardware reliability, and approximate computing.
Dr. Karpuzcu is a Fulbright Fellow. She was a recipient of the NSF CAREER Award.
Ulya R. Karpuzcu received the M.S. and Ph.D. degrees in electrical and computer engineering from the University of Illinois at Urbana–Champaign, Champaign, IL, USA.
She is currently an Associate Professor of Electrical and Computer Engineering at the University of Minnesota, Minneapolis, MN, USA. Her current research interests include the impact of technology on computing systems, energy-efficient computer architecture, hardware reliability, and approximate computing.
Dr. Karpuzcu is a Fulbright Fellow. She was a recipient of the NSF CAREER Award.View more
Department of Electrical Engineering, University of South Florida, Tampa, FL, USA
Selçuk Köse (S’10–M’12) received the B.S. degree in electrical and electronics engineering from Bilkent University, Ankara, Turkey, in 2006, and the M.S. and Ph.D. degrees in electrical engineering from the University of Rochester, Rochester, NY, USA, in 2008 and 2012, respectively.
He was at TUBITAK, Ankara, Intel Corporation, Santa Clara, CA, USA, and Freescale Semiconductor, Tempe, AZ, USA. He is currently an Associate Professor at the Department of Electrical Engineering, University of South Florida, Tampa, FL, USA. His current research interests include integrated voltage regulation, 3-D integration, hardware security, and green computing.
Dr. Köse has served on the Technical Program and Organization Committees of various conferences. He was a recipient of the NSF CAREER Award, the Cisco Research Award, the USF College of Engineering Outstanding Junior Researcher Award, and the USF Outstanding Faculty Award. He is an Associate Editor of the Journal of Circuits, Systems, and Computers and the Microelectronics Journal.
Selçuk Köse (S’10–M’12) received the B.S. degree in electrical and electronics engineering from Bilkent University, Ankara, Turkey, in 2006, and the M.S. and Ph.D. degrees in electrical engineering from the University of Rochester, Rochester, NY, USA, in 2008 and 2012, respectively.
He was at TUBITAK, Ankara, Intel Corporation, Santa Clara, CA, USA, and Freescale Semiconductor, Tempe, AZ, USA. He is currently an Associate Professor at the Department of Electrical Engineering, University of South Florida, Tampa, FL, USA. His current research interests include integrated voltage regulation, 3-D integration, hardware security, and green computing.
Dr. Köse has served on the Technical Program and Organization Committees of various conferences. He was a recipient of the NSF CAREER Award, the Cisco Research Award, the USF College of Engineering Outstanding Junior Researcher Award, and the USF Outstanding Faculty Award. He is an Associate Editor of the Journal of Circuits, Systems, and Computers and the Microelectronics Journal.View more
