Charles J. Alpert - researchr alias

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2011

2010

What makes a design difficult to routeCharles J. Alpert, Zhuo Li, Michael D. Moffitt, Gi-Joon Nam, Jarrod A. Roy, Gustavo Tellez. ispd 2010: 7-12 [doi]

Design-hierarchy aware mixed-size placement for routability optimizationYi-Lin Chuang, Gi-Joon Nam, Charles J. Alpert, Yao-Wen Chang, Jarrod A. Roy, Natarajan Viswanathan. iccad 2010: 663-668 [doi]

Detecting tangled logic structures in VLSI netlistsTanuj Jindal, Charles J. Alpert, Jiang Hu, Zhuo Li, Gi-Joon Nam, Charles B. Winn. dac 2010: 603-608 [doi]

Ultra-fast interconnect driven cell cloning for minimizing critical path delayZhuo Li, David A. Papa, Charles J. Alpert, Shiyan Hu, Weiping Shi, Cliff C. N. Sze, Ying Zhou. ispd 2010: 75-82 [doi]

Speeding Up Physical Synthesis with Transactional Timing AnalysisDavid A. Papa, Michael D. Moffitt, Charles J. Alpert, Igor L. Markov. dt, 27(5):14-25, 2010. [doi]

New placement prediction and mitigation techniques for local routing congestionTaraneh Taghavi, Zhuo Li, Charles J. Alpert, Gi-Joon Nam, Andrew Huber, Shyam Ramji. iccad 2010: 621-624 [doi]

ITOP: integrating timing optimization within placementNatarajan Viswanathan, Gi-Joon Nam, Jarrod A. Roy, Zhuo Li, Charles J. Alpert, Shyam Ramji, Chris Chu. ispd 2010: 83-90 [doi]

2009

2008

A polynomial time approximation scheme for timing constrained minimum cost layer assignmentShiyan Hu, Zhuo Li, Charles J. Alpert. iccad 2008: 112-115 [doi]

Fast interconnect synthesis with layer assignmentZhuo Li, Charles J. Alpert, Shiyan Hu, Tuhin Muhmud, Stephen T. Quay, Paul G. Villarrubia. ispd 2008: 71-77 [doi]

Pyramids: an efficient computational geometry-based approach for timing-driven placementTao Luo, David A. Papa, Zhuo Li, Chin-Ngai Sze, Charles J. Alpert, David Z. Pan. iccad 2008: 204-211 [doi]

Path smoothing via discrete optimizationMichael D. Moffitt, David A. Papa, Zhuo Li, Charles J. Alpert. dac 2008: 724-727 [doi]

RUMBLE: An Incremental Timing-Driven Physical-Synthesis Optimization AlgorithmDavid A. Papa, Tao Luo, Michael D. Moffitt, Chin-Ngai Sze, Zhuo Li, Gi-Joon Nam, Charles J. Alpert, Igor L. Markov. tcad, 27(12):2156-2168, 2008. [doi]

RUMBLE: an incremental, timing-driven, physical-synthesis optimization algorithmDavid A. Papa, Tao Luo, Michael D. Moffitt, Chin-Ngai Sze, Zhuo Li, Gi-Joon Nam, Charles J. Alpert, Igor L. Markov. ispd 2008: 2-9 [doi]

2007

The coming of age of physical synthesisCharles J. Alpert, Chris C. N. Chu, Paul G. Villarrubia. iccad 2007: 246-249 [doi]

The nuts and bolts of physical synthesisCharles J. Alpert, Shrirang K. Karandikar, Zhuo Li, Gi-Joon Nam, Stephen T. Quay, Haoxing Ren, Cliff C. N. Sze, Paul G. Villarrubia, Mehmet Can Yildiz. slip 2007: 89-94 [doi]

Fast Algorithms for Slew-Constrained Minimum Cost BufferingShiyan Hu, Charles J. Alpert, Jiang Hu, Shrirang K. Karandikar, Zhuo Li, Weiping Shi, Chin-Ngai Sze. tcad, 26(11):2009-2022, 2007. [doi]

Fast Electrical Correction Using Resizing and BufferingShrirang K. Karandikar, Charles J. Alpert, Mehmet Can Yildiz, Paul Villarrubia, Stephen T. Quay, T. Mahmud. aspdac 2007: 553-558 [doi]

Probabilistic Congestion Prediction with Partial BlockagesZhuo Li, Charles J. Alpert, Stephen T. Quay, Sachin S. Sapatnekar, Weiping Shi. isqed 2007: 841-846 [doi]

Hippocrates: First-Do-No-Harm Detailed PlacementHaoxing Ren, David Z. Pan, Charles J. Alpert, Gi-Joon Nam, Paul G. Villarrubia. aspdac 2007: 141-146 [doi]

Diffusion-Based Placement Migration With Application on LegalizationHaoxing Ren, David Z. Pan, Charles J. Alpert, Paul G. Villarrubia, Gi-Joon Nam. tcad, 26(12):2158-2172, 2007. [doi]

Path-Based Buffer InsertionChin-Ngai Sze, Charles J. Alpert, Jiang Hu, Weiping Shi. tcad, 26(7):1346-1355, 2007. [doi]

RQL: Global Placement via Relaxed Quadratic Spreading and LinearizationNatarajan Viswanathan, Gi-Joon Nam, Charles J. Alpert, Paul Villarrubia, Haoxing Ren, Chris C. N. Chu. dac 2007: 453-458 [doi]

2006

2005

Placement stability metricsCharles J. Alpert, Gi-Joon Nam, Paul Villarribua, Mehmet Can Yildiz. aspdac 2005: 1144-1147 [doi]

A semi-persistent clustering technique for VLSI circuit placementCharles J. Alpert, Andrew B. Kahng, Gi-Joon Nam, Sherief Reda, Paul Villarrubia. ispd 2005: 200-207 [doi]

Making fast buffer insertion even faster via approximation techniquesZhuo Li, Cliff C. N. Sze, Charles J. Alpert, Jiang Hu, Weiping Shi. aspdac 2005: 13-18 [doi]

Computational geometry based placement migrationTao Luo, Haoxing Ren, Charles J. Alpert, David Zhigang Pan. iccad 2005: 41-47

The ISPD2005 placement contest and benchmark suiteGi-Joon Nam, Charles J. Alpert, Paul Villarrubia, Bruce Winter, Mehmet Can Yildiz. ispd 2005: 216-220 [doi]

An efficient surface-based low-power buffer insertion algorithmRajeev R. Rao, David Blaauw, Dennis Sylvester, Charles J. Alpert, Sani R. Nassif. ispd 2005: 86-93 [doi]

Diffusion-based placement migrationHaoxing Ren, David Zhigang Pan, Charles J. Alpert, Paul Villarrubia. dac 2005: 515-520 [doi]

Path based buffer insertionCliff C. N. Sze, Charles J. Alpert, Jiang Hu, Weiping Shi. dac 2005: 509-514 [doi]

Practical techniques to reduce skew and its variations in buffered clock networksGanesh Venkataraman, Nikhil Jayakumar, Jiang Hu, Peng Li, Sunil P. Khatri, Anand Rajaram, Patrick McGuinness, Charles J. Alpert. iccad 2005: 592-596

2004

A fast algorithm for identifying good buffer insertion candidate locationsCharles J. Alpert, Milos Hrkic, Stephen T. Quay. ispd 2004: 47-52 [doi]

Closed-form delay and slew metrics made easyCharles J. Alpert, Frank Liu, Chandramouli V. Kashyap, Anirudh Devgan. tcad, 23(12):1661-1669, 2004. [doi]

Proceedings of the 2004 International Symposium on Physical Design, ISPD 2004, Phoenix, Arizona, USA, April 18-21, 2004Charles J. Alpert, Patrick Groeneveld, editors, ACM, 2004.

Fast and flexible buffer trees that navigate the physical layout environmentCharles J. Alpert, Milos Hrkic, Jiang Hu, Stephen T. Quay. dac 2004: 24-29 [doi]

Accurate estimation of global buffer delay within a floorplanCharles J. Alpert, Jiang Hu, Sachin S. Sapatnekar, Cliff C. N. Sze. iccad 2004: 706-711 [doi]

Porosity-aware buffered Steiner tree constructionCharles J. Alpert, Gopal Gandham, Milos Hrkic, Jiang Hu, Stephen T. Quay, Cliff C. N. Sze. tcad, 23(4):517-526, 2004. [doi]

Simultaneous driver sizing and buffer insertion using a delay penalty estimation techniqueCharles J. Alpert, Chris C. N. Chu, Gopal Gandham, Milos Hrkic, Jiang Hu, Chandramouli V. Kashyap, Stephen T. Quay. tcad, 23(1):136-141, 2004. [doi]

Closed-form expressions for extending step delay and slew metrics to ramp inputs for RC treesChandramouli V. Kashyap, Charles J. Alpert, Frank Liu, Anirudh Devgan. tcad, 23(4):509-516, 2004. [doi]

A delay metric for RC circuits based on the Weibull distributionFrank Liu, Chandramouli V. Kashyap, Charles J. Alpert. tcad, 23(3):443-447, 2004. [doi]

Complexity analysis and speedup techniques for optimal buffer insertion with minimum costWeiping Shi, Zhuo Li, Charles J. Alpert. aspdac 2004: 609-614 [doi]

A place and route aware buffered Steiner tree constructionCliff C. N. Sze, Jiang Hu, Charles J. Alpert. aspdac 2004: 355-360 [doi]

2003

A practical methodology for early buffer and wire resource allocationCharles J. Alpert, Jiang Hu, Sachin S. Sapatnekar, Paul Villarrubia. tcad, 22(5):573-583, 2003. [doi]

Guest editorialCharles J. Alpert, Sachin S. Sapatnekar. tcad, 22(4):385-386, 2003. [doi]

Delay and slew metrics using the lognormal distributionCharles J. Alpert, Frank Liu, Chandramouli V. Kashyap, Anirudh Devgan. dac 2003: 382-385 [doi]

Porosity aware buffered steiner tree constructionCharles J. Alpert, Gopal Gandham, Milos Hrkic, Jiang Hu, Stephen T. Quay. ispd 2003: 158-165 [doi]

Minimum buffered routing with bounded capacitive load for slew rate and reliability controlCharles J. Alpert, Andrew B. Kahng, Bao Liu, Ion I. Mandoiu, Alexander Zelikovsky. tcad, 22(3):241-253, 2003. [doi]

Effective free space management for cut-based placement via analytical constraint generationCharles J. Alpert, Gi-Joon Nam, Paul G. Villarrubia. tcad, 22(10):1343-1353, 2003. [doi]

Optimal path routing in single- and multiple-clock domain systemsSoha Hassoun, Charles J. Alpert. tcad, 22(11):1580-1588, 2003. [doi]

Buffer insertion with adaptive blockage avoidanceJiang Hu, Charles J. Alpert, Stephen T. Quay, Gopal Gandham. tcad, 22(4):492-498, 2003. [doi]

Closed form expressions for extending step delay and slew metrics to ramp inputsChandramouli V. Kashyap, Charles J. Alpert, Frank Liu, Anirudh Devgan. ispd 2003: 24-31 [doi]

Proceedings of the 2003 International Symposium on Physical Design, ISPD 2003, Monterey, CA, USA, April 6-9, 2003Massoud Pedram, Charles J. Alpert, editors, ACM, 2003.

2002

Correction to interconnect synthesis without wire tapering Charles J. Alpert, Anirudh Devgan, John P. Fishburn, Stephen T. Quay. tcad, 21(4):497-497, 2002. [doi]

Free space management for cut-based placementCharles J. Alpert, Gi-Joon Nam, Paul Villarrubia. iccad 2002: 746-751 [doi]

Simultaneous driver sizing and buffer insertion using a delay penalty estimation techniqueCharles J. Alpert, Chris C. N. Chu, Gopal Gandham, Milos Hrkic, Jiang Hu, Chandramouli V. Kashyap, Stephen T. Quay. ispd 2002: 104-109 [doi]

Optimal buffered routing path constructions for single and multiple clock domain systemsSoha Hassoun, Charles J. Alpert, Meera Thiagarajan. iccad 2002: 247-253 [doi]

Buffer insertion with adaptive blockage avoidanceJiang Hu, Charles J. Alpert, Stephen T. Quay, Gopal Gandham. ispd 2002: 92-97 [doi]

PERI: a technique for extending delay and slew metrics to ramp inputsChandramouli V. Kashyap, Charles J. Alpert, Frank Liu, Anirudh Devgan. tau 2002: 57-62 [doi]

Proceedings of the 8th ACM/IEEE International Workshop on Timing Issues in the Specification and Synthesis of Digital Systems, Monterey, California, USA, December 2-3, 2002David P. LaPotin, Charles J. Alpert, John Lillis, editors, ACM, 2002.

A delay metric for RC circuits based on the Weibull distributionFrank Liu, Chandramouli V. Kashyap, Charles J. Alpert. iccad 2002: 620-624 [doi]

Probability-driven routing in a datapath environmentSuresh Raman, Sachin S. Sapatnekar, Charles J. Alpert. integration, 31(2):159-182, 2002. [doi]

2001

A Practical Methodology for Early Buffer and Wire Resource AllocationCharles J. Alpert, Jiang Hu, Sachin S. Sapatnekar, Paul Villarrubia. dac 2001: 189-194 [doi]

Buffered Steiner trees for difficult instancesCharles J. Alpert, Milos Hrkic, Jiang Hu, Andrew B. Kahng, John Lillis, Bao Liu, Stephen T. Quay, Sachin S. Sapatnekar, A. J. Sullivan, Paul Villarrubia. ispd 2001: 4-9 [doi]

Interconnect synthesis without wire taperingCharles J. Alpert, Anirudh Devgan, John P. Fishburn, Stephen T. Quay. tcad, 20(1):90-104, 2001. [doi]

RC delay metrics for performance optimizationCharles J. Alpert, Anirudh Devgan, Chandramouli V. Kashyap. tcad, 20(5):571-582, 2001. [doi]

Steiner tree optimization for buffers, blockages, and baysCharles J. Alpert, Gopal Gandham, Jiang Hu, José Luis Neves, Stephen T. Quay, Sachin S. Sapatnekar. tcad, 20(4):556-562, 2001. [doi]

Steiner tree optimization for buffers. Blockages and baysCharles J. Alpert, Gopal Gandham, Jiang Hu, José Luis Neves, Stephen T. Quay, Sachin S. Sapatnekar. iscas 2001: 399-402 [doi]

Minimum-Buffered Routing of Non-Critical Nets for Slew Rate and Reliability ControlCharles J. Alpert, Andrew B. Kahng, Bao Liu, Ion I. Mandoiu, Alexander Zelikovsky. iccad 2001: 408 [doi]

2000

1999

1998

1997

1996

A general framework for vertex orderings with applications to circuit clusteringCharles J. Alpert, Andrew B. Kahng. tvlsi, 4(2):240-246, 1996. [doi]

1995

Spectral Partitioning: The More Eigenvectors, The BetterCharles J. Alpert, So-Zen Yao. dac 1995: 195-200 [doi]

Multiway partitioning via geometric embeddings, orderings, and dynamic programmingCharles J. Alpert, Andrew B. Kahng. tcad, 14(11):1342-1358, 1995. [doi]

Prim-Dijkstra tradeoffs for improved performance-driven routing tree designCharles J. Alpert, T. C. Hu, Dennis J.-H. Huang, Andrew B. Kahng, David R. Karger. tcad, 14(7):890-896, 1995. [doi]

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