Filters








46 Hits in 5.5 sec

Blueshift: Designing processors for timing speculation from the ground up

Brian Greskamp, Lu Wan, Ulya R. Karpuzcu, Jeffrey J. Cook, Josep Torrellas, Deming Chen, Craig Zilles
2009 2009 IEEE 15th International Symposium on High Performance Computer Architecture  
In this paper, we present a new approach where the processor itself is designed from the ground up for TS.  ...  Our evaluation with modules from the OpenSPARC T1 processor shows that, compared to conventional TS, BlueShift with OSB speeds up applications by an average of 8% while increasing the processor power by  ...  In this paper, we present a novel approach where the processor itself is designed from the ground up for TS.  ... 
doi:10.1109/hpca.2009.4798256 dblp:conf/hpca/GreskampWKCTCZ09 fatcat:yaqsojtvxndipn5umf7hczibae

Designing a processor from the ground up to allow voltage/reliability tradeoffs

Andrew B. Kahng, Seokhyeong Kang, Rakesh Kumar, John Sartori
2010 HPCA - 16 2010 The Sixteenth International Symposium on High-Performance Computer Architecture  
This results in soft architectures -designs that fail gracefully, allowing us to perform reliability/power tradeoffs by reducing voltage up to the point that produces maximum allowable errors for our application  ...  Current processor designs have a critical operating point that sets a hard limit on voltage scaling.  ...  Figure 7 illustrates how timing violations and power consumption vary with voltage for processors designed from the ground up, using the design methodologies described in Section IV.  ... 
doi:10.1109/hpca.2010.5416652 dblp:conf/hpca/KahngKKS10 fatcat:7ps5hdu52vd23bfamja3vldcpm

Exploring circuit timing-aware language and compilation

Giang Hoang, Robby Bruce Findler, Russ Joseph
2011 Proceedings of the sixteenth international conference on Architectural support for programming languages and operating systems - ASPLOS '11  
By adjusting the design of the ISA and enabling circuit timingsensitive optimizations in a compiler, we can more effectively exploit timing speculation.  ...  While there has been growing interest in systems that leverage circuit-level timing speculation to improve the performance and power-efficiency of processors, most of the innovation has been at the microarchitectural  ...  Acknowledgments We would like to thank anonymous reviewers and Antonio Gonzalez for their helpful comments. This work is in part supported by NSF CAREER CCF-0644332 and NSF CNS-0720820.  ... 
doi:10.1145/1950365.1950405 dblp:conf/asplos/HoangFJ11 fatcat:neio2onoc5efxiillofquxcgb4

Identifying and predicting timing-critical instructions to boost timing speculation

Jing Xin, Russ Joseph
2011 Proceedings of the 44th Annual IEEE/ACM International Symposium on Microarchitecture - MICRO-44 '11  
Recent work has proposed microarchitectural methods to dynamically detect and recover from timing errors in processor logic.  ...  Circuit-level timing speculation has been proposed as a technique to reduce dependence on design margins and eliminating power/performance overheads.  ...  Blueshift [13] applies a ground-up based design by optimizing the most-often violated timing paths in order to maximize the potential of timing speculation.  ... 
doi:10.1145/2155620.2155636 dblp:conf/micro/XinJ11 fatcat:hn5pdtpbybbqbo3b3ta7tgaoji

Opportunistic Design Margining for Area and Power Efficient Processor Pipelines in Real Time Applications

Mini Jayakrishnan, Alan Chang, Tony Kim
2018 Journal of Low Power Electronics and Applications  
Useful skew and clock skew scheduling [23] combined with gate sizing [24, 25] help to compensate variations and speed up the processor pipelines.  ...  EVAL (Environment for Variation-Afflicted Logic) speeds up the timing of critical paths through Adaptive Body Bias (ABB), as well as Adaptive Supply Voltage (ASV) [26] , but it has significant area overheads  ...  This results in the optimal power-aware design of the processor pipeline from the ground up without the failure risks of runtime speculative operating point tuning.  ... 
doi:10.3390/jlpea8020009 fatcat:rmuqbnthzjgyddya2qc6zqppdm

On logic synthesis for timing speculation

Yuxi Liu, Rong Ye, Feng Yuan, Rakesh Kumar, Qiang Xu
2012 Proceedings of the International Conference on Computer-Aided Design - ICCAD '12  
In this work, we propose to conduct logic synthesis for timing-speculated circuits from the ground up.  ...  By allowing the occurrence of infrequent timing errors and correcting them with rollback mechanisms, the so-called timing speculation (TS) technique can significantly improve circuit energy-efficiency  ...  Motivated by the above, we propose to conduct logic synthesis for timing speculation from the ground up in this work.  ... 
doi:10.1145/2429384.2429512 dblp:conf/iccad/LiuYYKX12 fatcat:g2vjcfm6j5c6riccmawxgyv7ou

Conceptual design of an integrated thermally self-sustained methanol steam reformer – High-temperature PEM fuel cell stack manportable power generator

A. Lotrič, M. Sekavčnik, A. Pohar, B. Likozar, S. Hočevar
2017 International journal of hydrogen energy  
An experimental setup for measuring the characteristics of the integrated system was designed and used to measure the characteristics of the two-cell HT PEMFC stack.  ...  We have investigated the concept of an integrated system for small, manportable power units.  ...  Acknowledgments All the set-up and experimental work with HT PEMFC stack was carried out at the facilities of SME  ... 
doi:10.1016/j.ijhydene.2017.05.057 fatcat:ukbkprekajft5gy6p4brn4go2m

Insights into tidal disruption of stars from PS1-10jh

Linda E. Strubbe, Norman Murray
2015 Monthly notices of the Royal Astronomical Society  
to super-luminous supernovae or the internal shock model for gamma-ray bursts).  ...  We use the photometric data to infer that PS1-10jh comprised an outflow of ~ 0.01 M_sun of gas, escaping from the BH at ~1000 km/s, and we propose that this outflow was driven primarily by radiation pressure  ...  P-Cygni profiles (again, because they are due to absorption from the ground state n = 1): e.g., C III, Si IV, C IV.  ... 
doi:10.1093/mnras/stv2081 fatcat:7t4ke6gyq5aglmhwdlld5ur67i

Synthetic line and continuum linear-polarization signatures of axisymmetric Type II supernova ejecta

Luc Dessart, D. John Hillier
2011 Monthly notices of the Royal Astronomical Society  
Our early-time signatures are in contradiction with predictions for a centrally illuminated aspherical nebula, although this becomes a better approximation at nebular times.  ...  Aspherical ejecta are produced by prescribing a latitudinal scaling or stretching of SN ejecta inputs obtained from 1-D non-LTE time-dependent calculations.  ...  We employ the results from these 1D simulations at a few days after explosion up to nebular times.  ... 
doi:10.1111/j.1365-2966.2011.18967.x fatcat:a4kwftiji5g75fmr3pgmfwfcki

System Level Analysis for Achieving Thermal Balance and Lifetime Reliability in Reliably Overclocked Systems

Prem Kumar, Ramesh, Viswanathan Subramanian, Arun Somani
unpublished
In this paper, we elaborate more on the theoretical analysis along with experimental results to establish a safe acceleration zone for such 'better than worst-case' designs by efficiently balancing the  ...  First, we theoretically study the possibilities for realizing such a system.  ...  ACKNOWLEDGMENT The research reported in this paper is partially supported by NSF grant number 0311061 and the Jerry R. Junkins Endowment at Iowa State University.  ... 
fatcat:zbwwkddsgbcqzoo5oxbzgkzs4u

Carbon sp chains in graphene nanoholes

Ivano E Castelli, Nicola Ferri, Giovanni Onida, Nicola Manini
2012 Journal of Physics: Condensed Matter  
We adopt a fair compromise of microscopic realism with a certain level of idealization in the model configurations, and predict a number of properties susceptible to comparison with experiment.  ...  The research leading to these results has received funding from the European Community's Seventh Framework Programme (FP7/2007-2013) under grant agreement no. 211956 (ETSF-  ...  Acknowledgments We are grateful to L Ravagnan, P Milani, E Cinquanta and Z Zanolli for invaluable discussions.  ... 
doi:10.1088/0953-8984/24/10/104019 pmid:22353751 fatcat:vugwisfmjvcjtmsozm4i62gocm

A century of relativity

Irwin I. Shapiro
1999 Reviews of Modern Physics  
Shapiro, Saul Teukolsky, and Robert Vessot, for their useful suggestions.  ...  ACKNOWLEDGMENTS I thank George Field, Kurt Gottfried, and John Stachel for their extensive and very helpful comments, and Stephen Brush, Thibault Damour, Stanley Deser, Gerald Holton, Martin Rees, Stuart  ...  With continued future gathering and analysis of satellite-tracking data from the increasing number of satellites that are designed, at least in part, to improve knowledge of both the static and time-varying  ... 
doi:10.1103/revmodphys.71.s41 fatcat:o3lcq5hnmffmjgkowdqbfxxcr4

A Century of Relativity [chapter]

Irwin I. Shapiro
1999 More Things in Heaven and Earth  
Shapiro, Saul Teukolsky, and Robert Vessot, for their useful suggestions.  ...  ACKNOWLEDGMENTS I thank George Field, Kurt Gottfried, and John Stachel for their extensive and very helpful comments, and Stephen Brush, Thibault Damour, Stanley Deser, Gerald Holton, Martin Rees, Stuart  ...  With continued future gathering and analysis of satellite-tracking data from the increasing number of satellites that are designed, at least in part, to improve knowledge of both the static and time-varying  ... 
doi:10.1007/978-1-4612-1512-7_6 fatcat:uudvodg4gzfo7n5kix3dbued6a

Design space exploration in near-data co-processors for general-purpose acceleration, in high-performance and low-power processing environments [article]

Αθανάσιος Σ. Τζιουβάρας, University Of Thessaly, Γεώργιος Σταμούλης
2021
Department of Electrical and Computer Engineering Doctor of Philosophy Design space exploration in near-data co-processors for general-purpose acceleration, in high-performance and low-power processing  ...  His advices, counseling and analytical suggestions constitute for me not only a source of inspiration, but also play a major role on the concepts incorporated within this work.  ...  He also assisted me meticulously with the writing process of this dissertation and  ... 
doi:10.26253/heal.uth.12760 fatcat:c5tcx5afvjc67f3z4rkxpofuyy

OUP accepted manuscript

2019 Nippon Tenmon Gakkai obun kenkyu hokoku  
This review article concludes with future prospects for solar physics research based on the achievements of Hinode.  ...  Hinode carries three instruments: the Solar Optical Telescope, the X-Ray Telescope, and the EUV Imaging Spectrometer.  ...  De Moortel for her valuable comments on subsection 6.1. The work of L.  ... 
doi:10.1093/pasj/psz084 fatcat:5l6qk6wvqfe4hcwvt4dmpvru6q
« Previous Showing results 1 — 15 out of 46 results