Publications

By Date:

Filipp Akopyan, Carlos Tadeo Ortega Otero, and Rajit Manohar. Hybrid Synchronous-Asynchronous Tool Flow for Emerging VLSI Design. IEEE International Workshop on Logic Synthesis, June 2016.

Wenmian Hua and Rajit Manohar. Exact Timing Analysis for Concurrent Systems. Work-in-progress session, Design Automation Conference, June 2016.

Sandra Jackson and Rajit Manohar. Gradual Synchronization. IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2016. (abstract)   — Best paper finalist

Filipp Akopyan, Jun Sawada, Andrew Cassidy, Rodrigo Alvarez-Icaza, John Arthur, Paul Merolla, N Imam, Yutaka Nakamura, Pallab Datta, Gi-Joon Nam, Brian Taba, Michael Beakes, Bernard Brezzo, Jente Kuang, Rajit Manohar, William Risk, Bryan Jackson, and Dharmendra Modha. TrueNorth: Design and Tool Flow of a 65mW 1 Million Neuron Programmable Neurosynaptic Chip. IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 34(10), October 2015. (abstract, pdf)   — Keynote paper

Rajit Manohar. Comparing Stochastic and Deterministic Computing. IEEE Computer Architecture Letters, 14(2):119--122, July 2015. (abstract, pdf)   — Best of Computer Architecture Letters

Stephen Longfield, Brittany Nkounkou, Rajit Manohar, and Ross Tate. Preventing Glitches and Short Circuits in High-Level Self-Timed Chip Specifications. 36th Annual ACM SIGPLAN Conference on Programming Language Design and Implementation (PLDI), June 2015. (abstract, pdf)

Rajit Manohar and Yoram Moses. Analyzing Isochronic Forks with Potential Causality. IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2015. (abstract, pdf)   — Best paper finalist

Robert Karmazin, Stephen Longfield, Carlos Tadeo Ortega Otero, and Rajit Manohar. Timing Driven Placement for Quasi Delay-Insensitive Circuits. IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2015. (abstract, pdf)

Carlos Tadeo Ortega Otero, Jonathan Tse, and Rajit Manohar. AES Hardware-Software Co-Design in WSN. IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2015. (abstract, pdf)

Carlos Tadeo Ortega Otero, Jonathan Tse, Robert Karmazin, Benjamin Hill, and Rajit Manohar. Automatic Obfuscated Cell Layout for Trusted Split-Foundry Design. IEEE International Symposium on Hardware-Oriented Security and Trust, May 2015.

Giovanni Rovere, Nabil Imam, Rajit Manohar, and Chiara Bartolozzi. A QDI Asynchronous AER Serializer/Deserializer Link in 180nm for Event-Based Sensors for Robotic Applications. Proceedings of the International Symposium on Circuits and Systems, May 2015. (abstract)

Andrew S. Cassidy, Rodrigo Alvarez-Icaza, Filipp Akopyan, Jun Sawada, John V. Arthur, Paul A. Merolla, Pallab Datta, Marc Gonzalez Tallada, Brian Taba, Alexander Andreopoulos, Arnon Amir, Steven K. Esser, Jeff Kusnitz, Rathinakumar Appuswamy, Chuck Haymes, Bernard Brezzo, Roger Moussalli, Ralph Bellofatto, Christian Baks, Michael Mastro, Kai Schleupen, Charles E. Cox, Ken Inoue, Steve Millman, Nabil Imam, Emmett McQuinn, Yutaka T. Nakamura, Ivan Vo, Chen Guo, Don Nguyen, Scott Lekuch, Sameh Assad, Daniel Friedman, Bryan L. Jackson, Myron D. Flickner, William P. Risk, Rajit Manohar, Dharmendra S. Modha. Real-Time Scalable Cortical Computing at 46 Giga-Synaptic OPS/Watt with ~100x Speedup in Time-to-Solution and ~100,000x Reduction in Energy-to-Solution. Proceedings of Supercomputing 2014, November 2014. (abstract, pdf)   — ACM Gordon Bell Prize finalist

Stephen Longfield and Rajit Manohar. Removing Concurrency for Rapid Functional Verification. Proceedings of the 2014 International Conference on Computer-Aided Design (ICCAD), November 2014. (abstract, pdf)

Paul A. Merolla, John V. Arthur, Rodrigo Alvarez-Icaza, Andrew S. Cassidy, Jun Sawada, Filipp Akopyan, Bryan L. Jackson, Nabil Imam, Chen Guo, Yutaka Nakamura, Bernad Brezzo, Ivan Vo, Steven K. Esser, Rathinakumar Appuswamy, Brian Taba, Arnon Amir, Myron D. Flickner, William P. Risk, Rajit Manohar, and Dharmendra Modha. A Million Spiking-Neuron Integrated Circuit with a Scalable Communication Network and Interface. Science, 345(6197):668--673, August 2014. (abstract, pdf)   — IBM Research 2014 Pat Goldberg Math/CS/EE Best Paper Award

Benjamin Tang, Sunil Bhave, and Rajit Manohar. Low Power Asynchronous VLSI with NEM Relays. Proceedings of the 20th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2014. (abstract, pdf)   — Best paper finalist

Jaeyeon Kihm, François Guimbretière, Julia Karl, Rajit Manohar. Using Asymmetric Cores to Reduce Power Consumption for Interactive Devices with Bi-Stable Displays. Proceedings of the ACM CHI Conference on Human Factors in Computing Systems (CHI), April 2014. (abstract, pdf)

Carlos Tadeo Ortega Otero, Jonathan Tse, Robert Karmazin, Benjamin Hill, Rajit Manohar. ULSNAP: An Ultra-low Power Event-Driven Microcontroller for Sensor Network Nodes. Proceedings of the IEEE International Symposium on Quality Electronic Design, March 2014. (abstract, pdf)

François Guimbretière, Shenwei Liu, Han Wang, Rajit Manohar. An Asymmetric Dual-Processor Architecture for Low Power Information Appliances. ACM Transactions on Embedded Computing Systems, 13(4), February 2014. (abstract, pdf)

Benjamin Hill, Robert Karmazin, Carlos Tadeo Ortega Otero, Jonathan Tse, and Rajit Manohar. A Split-Foundry Asynchronous FPGA. Proceedings of the IEEE Custom Integrated Circuits Conference (CICC), September 2013. (abstract, pdf)

Saber Moradi, Nabil Imam, Rajit Manohar, and Giacomo Indiveri. A Memory-Efficient Routing Method for Large-Scale Spiking Neural Networks. 21st European Conference on Circuit Theory and Design, September 2013. (abstract, pdf)

Nabil Imam, Kyle Wecker, Jonathan Tse, Robert Karmazin, and Rajit Manohar. Neural Spiking Dynamics in Asynchronous Digital Circuits. 2013 International Joint Conference on Neural Networks (IJCNN), August 2013. (abstract, pdf)

Robert Karmazin, Carlos Otero, and Rajit Manohar. CellTK: Automated Layout for Asynchronous Circuits with Nonstandard Cells. Proceedings of the 19th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2013. (abstract, pdf)

Stephen Longfield and Rajit Manohar. Inverting Martin Synthesis for Verification. Proceedings of the 19th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2013. (abstract, pdf)   — Best paper award

Jonathan Tse, Benjamin Hill, and Rajit Manohar. A Bit of Analysis on Self-Timed Single-Bit On-Chip Links. Proceedings of the 19th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2013. (abstract, pdf)

Benjamin Tang, Stephen Longfield, Rajit Manohar, and Sunil Bhave. Low Power ASIC GPS Tracking Loops: Quantifying the Trade-Offs Between Area, Power and Accuracy. Proc. ION GNSS Technical Meeting, September 2012.    — Best presentation award

Rajit Manohar. Scalable Routing in Large-Scale Neuromorphic Systems. Symposium on Large-Scale Neuromorphic Systems at the Annual International Conference of the IEEE Engineering in Medicine and Biology Society [invited], August 2012.

John Arthur, Paul Merolla, Filipp Akopyan, Rodrigo Alvarez, Andrew Cassidy, Shyamal Chandra, Steven Esser, Nabil Imam, William Risk, Daniel Rubin, Rajit Manohar and Dharmendra Modha. Building Block of a Programmable Neuromorphic Substrate: A Digital Neurosynaptic Core. 2012 International Joint Conference on Neural Networks (IJCNN), June 2012. (abstract, pdf)

Nabil Imam, Thomas Cleland, Rajit Manohar, Paul Merolla, John Arthur, Filipp Akopyan, and Dharmendra Modha. Implementation of Olfactory Bulb Glomerular Layer Computation in a Digital Neurosynaptic Core. Frontiers of Neuromorphic Engineering, Vol. 6, Number 83, June 2012. (abstract, pdf)

Benjamin Tang, Stephen Longfield, Sunil Bhave, and Rajit Manohar. A Low Power Asynchronous GPS Baseband Processor. Proceedings of the 18th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2012. (abstract, pdf)

Basit Riaz Sheikh and Rajit Manohar. An Asynchronous Floating-Point Multiplier. Proceedings of the 18th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2012. (abstract, pdf)

Nabil Imam, Filipp Akopyan, Paul Merolla, John Arthur, Rajit Manohar, and Dharmendra Modha. A Digital Neurosynaptic Core Using Event-Driven QDI Circuits. Proceedings of the 18th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2012. (abstract, pdf)   — Best paper award

T. Robert Harris, Shivam Priyadarshi, Samson Melamed, Carlos Otero, Rajit Manohar, Steven R. Dooley, Nikhil M. Kriplani, W. Rhett Davis, Paul D. Franzon, and Michael B. Steer. A Transient Electrothermal Analysis of Three-Dimensional Integrated Circuits. IEEE Transactions on Components and Packaging Technologies, 2(4):660–667, April 2012. (abstract)

S. Priyadarshi, T. R. Harris, S. Melamed, C. Otero, N. Kriplani, C. E. Christoffersen, R. Manohar, S. R. Dooley, W. R. Davis, P. D. Franzon, and M. B. Steer. Dynamic electrothermal simulation of three dimensional integrated circuits using standard cell macromodels. IET Circuits, Devices, and Systems, 6(1):35–44, January 2012.

Basit Riaz Sheikh and Rajit Manohar. Energy-efficient Pipeline Templates for High Performance Asynchronous Circuits. ACM Journal on Emerging Technologies in Computer Systems (special issue on asynchrony in system design), 7(4), December 2011. (abstract, pdf)

Paul Merolla, John Arthur, Filipp Akopyan, Nabil Imam, Rajit Manohar, Dharmendra Modha. A Digital Neurosynaptic Core Using Embedded Crossbar Memory with 45pJ per Spike in 45nm. Proceedings of the IEEE Custom Integrated Circuits Conference (CICC), September 2011. (abstract, pdf)

Nabil Imam and Rajit Manohar. Address-Event Communication Using Token-Ring Mutual Exclusion. Proceedings of the 17th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), April 2011. (abstract, pdf)

Basit Riaz Sheikh and Rajit Manohar. An Operand-Optimized Asynchronous IEEE 754 Double-precision floating-point adder. Proceedings of the 16th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2010. (abstract, pdf)   — Best paper award

Christopher LaFrieda, Benjamin Hill, and Rajit Manohar. An Asynchronous FPGA with Two-Phase Enable-Scaled Routing. Proceedings of the 16th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2010. (abstract, pdf)   — Best paper finalist

Carlos Tadeo Ortega Otero, Jonathan Tse, and Rajit Manohar. Static Power Reduction Techniques for Asynchronous Circuits. Proceedings of the 16th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2010. (abstract, pdf)

Christopher LaFrieda and Rajit Manohar. Reducing Power Consumption with Relaxed Quasi Delay-Insensitive Circuits. Proceedings of the 15th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2009. (abstract, pdf)

S. Ramaswamy, L. Rockett, D. Patel, S. Danziger, R. Manohar, C. Kelly, J. Holt, V. Ekanayake, D. Elftmann. A Radiation Hardened Reconfigurable FPGA. Proceedings of the IEEE Aerospace Conference, March 2009. (abstract, pdf)

Filipp Akopyan, Carlos Tadeo Ortega Otero, David Fang, Sandra Jackson, and Rajit Manohar. Variability in 3-D Integrated Circuits. Proceedings of the IEEE Custom Integrated Circuits Conference (CICC), September 2008. (abstract, pdf)

Christopher LaFrieda, Engin Ipek, Jose Martinez, and Rajit Manohar. Utilizing dynamically coupled cores to form a resilient chip multiprocessor. Proc. International Conference on Dependable Systems and Networks (DSN), June 2007. (abstract, pdf)

Rajit Manohar, Clinton Kelly IV, et al. Development of Reprogrammable Low Power High Density High Speed RADHARD FPGAs. Government Microcircuit Applications and Critical Technology Conference, March 2007.

Rajit Manohar. Reconfigurable Asynchronous Logic. Proceedings of the IEEE Custom Integrated Circuits Conference (CICC), September 2006. (abstract, pdf)

David Fang, Christopher LaFrieda, Song Peng, and Rajit Manohar. A 3-Tier Asynchronous FPGA. Proceedings of the 23rd International VLSI/ULSI Multilevel Interconnection Conference (VMIC), September 2006. (abstract, pdf)

Jon Russo, Mohammed Amduka, Keith Pendersen, Richard Lethin, Jonathan Springer, Rajit Manohar, Rami Melhem. Enabling Cognitive Architectures for UAV Mission Planning. Proceedings of the High Performance Embedded Computing Workshop (HPEC), September 2006. (abstract, pdf)   — Best paper award

Rajit Manohar, Clinton Kelly IV, J. Holt, Chris Liu, Leonard Rockett, Dinu Patel, Steven Danzinger. Application of Low Power High Density Gigahertz Speed Commercial FPGA Technology to High Radiation Applications using RADHARD-by-Process Techniques. Proceedings of the 9th Military and Aerospace Programmable Logic Devices International Conference, September 2006.

Song Peng and Rajit Manohar. Yield Enhancement of Asynchronous Logic Circuits through 3-Dimensional Integration Technology. Proceedings of the ACM Great Lakes Symposium on VLSI (GLVLSI), April 2006. (abstract, pdf)

Song Peng and Rajit Manohar. Self-healing Asynchronous Arrays. Proceedings of the 12th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), March 2006. (abstract, pdf)

Filipp Akopyan, Rajit Manohar, and A. Apsel. A level-crossing Flash Asynchronous Analog-to-Digital Converter. Proceedings of the 12th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), March 2006. (abstract, pdf)   — Best paper award

David Fang, Filipp Akopyan, and Rajit Manohar. Self-Timed Thermally Aware Circuits. IEEE Computer Society Annual Symposium on VLSI (ISVLSI), March 2006. (abstract, pdf)

Song Peng and Rajit Manohar. Efficient Failure Detection in Pipelined Asynchronous Circuits. Proceedings of the IEEE Symposium on Defect and Fault Tolerance in VLSI Systems (DFT), October 2005. (abstract, pdf)

Song Peng and Rajit Manohar. Fault Tolerant Asynchronous Adders through Dynamic Self-reconfiguration. Proceedings of the IEEE International Conference on Computer Design (ICCD), October 2005. (abstract, pdf)

Yao-Win Hong, Birsen Sirkeci-Mergen, Anna Scaglione, and Rajit Manohar. Dense Sensor Networks are also Energy-efficient: when `more' is `less'. Proceedings of MILCOM 2005, October 2005. (abstract, pdf)   — IEEE Fred Ellersick Award for the best unclassified paper at MILCOM

Christianto C. Liu, Jeng-Huei Chen, Rajit Manohar, and Sandip Tiwari. Mapping Multimedia Applications to 3-D System-on-Chip. Proceedings of the 2005 IEEE International Symposium on Circuits and Systems, May 2005.

David Fang, John Teifel, and Rajit Manohar. A High-Performance Asynchronous FPGA: Test Results. 2005 IEEE Symposium on Field-Programmable Custom Computing Machines (FCCM), April 2005. (abstract, pdf)

Virantha Ekanayake, Clinton Kelly IV, and Rajit Manohar. BitSNAP: Dynamic Significance Compression for a Low Power Sensor Network Asynchronous Processor. Proceedings of the 11th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), March 2005. (abstract, pdf, ps)   — Best paper finalist

Song Peng, David Fang, John Teifel, and Rajit Manohar. Automated Synthesis for Asynchronous FPGAs. 13th ACM International Symposium on Field Programmable Gate Arrays (FPGA), February 2005. (abstract, pdf, ps)

John Teifel and Rajit Manohar. An Asynchronous Dataflow FPGA Architecture. IEEE Transactions on Computers (special issue on field-programmable logic), November 2004. (abstract, pdf)

Rajit Manohar and K. Mani Chandy. Δ-Dataflow Networks for Event Stream Processing. Proceedings of the IASTED International Conference on Parallel and Distributed Computing and Systems, November 2004. (abstract, pdf, ps)   — Best paper award

Virantha Ekanayake, Clinton Kelly IV, and Rajit Manohar. An Ultra-low-power Processor for Sensor Networks. Proceedings of the 11th International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS), October 2004. (abstract, pdf, ps)

David Biermann, Emin Gun Sirer, and Rajit Manohar. A Rate Matching-based Approach to Dynamic Voltage Scaling. Proceedings of the First Watson Conference on the Interaction between Architecture, Circuits, and Compilers, October 2004. (abstract, pdf, ps)

Christopher LaFrieda and Rajit Manohar. Robust Fault Detection and Isolation Techniques for Quasi Delay-Insensitive Circuits. Proceedings of the International Conference on Dependable Systems and Networks (DSN), July 2004. (abstract, pdf, ps)

David Fang and Rajit Manohar. Non-Uniform Access Asynchronous Register Files. Proceedings of the 10th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), April 2004. (abstract, pdf, ps)

John Teifel and Rajit Manohar. Static Tokens: Using Dataflow to Automate Concurrent Pipeline Synthesis. Proceedings of the 10th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), April 2004. (abstract, pdf, ps)

John Teifel and Rajit Manohar. Highly Pipelined Asynchronous FPGAs. 12th ACM International Symposium on Field-Programmable Gate Arrays (FPGA), Monterey, CA, February 2004. [Please see abstract]. (abstract, pdf, ps)

Clinton Kelly IV and Rajit Manohar. An Event-Synchronization Protocol for Parallel Simulation of Large-Scale Wireless Networks. Seventh IEEE International Symposium on Distributed Simulation and Real Time Applications, October 2003. (abstract, pdf, ps)

John Teifel and Rajit Manohar. Programmable Asynchronous Pipeline Arrays. Proceedings of the 13th International Conference on Field Programmable Logic and Applications (FPL), pp. 345--354, Lisbon, Portugal, September 2003. (abstract, pdf, ps)

Clinton Kelly IV, Virantha Ekanayake, and Rajit Manohar. SNAP: A Sensor Network Asynchronous Processor. Proceedings of the 9th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), pp. 24--33, Vancouver, BC, May 2003. (abstract, pdf, ps)

John Teifel and Rajit Manohar. A High Speed Clockless Serial Link Tranceiver. Proceedings of the 9th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), pp. 151--161, Vancouver, BC, May 2003. (abstract, pdf, ps)

Virantha Ekanayake and Rajit Manohar. Asynchronous DRAM Design and Synthesis. Proceedings of the 9th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), pp. 174--183, Vancouver, BC, May 2003. (abstract, pdf, ps)

Rajit Manohar and Anna Scaglione. Power Optimal Routing in Wireless Networks. IEEE International Conference on Communications, pp. 2979--2984, Anchorage, AK, May 2003. (abstract, pdf)

John Teifel, David Fang, David Biermann, Clinton Kelly IV, and Rajit Manohar. Energy-Efficient Pipelines. Proceedings of the 8th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), pp. 21--31, Manchester, UK, March 2002. (abstract, ps)

Rajit Manohar. Scalable Formal Design Methods for Asynchronous VLSI. Proceedings of the 29th ACM SIGPLAN/SIGACT Conference on the Principles of Programming Languages [invited] (POPL), Portland, OR, January 2002.

Rajit Manohar and Clinton Kelly IV. Network on a Chip: Modeling Wireless Networks with Asynchronous VLSI. IEEE Communications Magazine, pp. 149--155, November 2001. (abstract, pdf, ps)

Rajit Manohar. Width-Adaptive Data Word Architectures. Proceedings of the 19th Conference on Advanced Research in VLSI (ARVLSI), pp. 112--129, Salt Lake City, Utah, March 2001. (abstract, pdf, ps)

Rajit Manohar, Mika Nyström, and Alain J. Martin. Precise Exceptions in Asynchronous Processors. Proceedings of the 19th Conference on Advanced Research in VLSI (ARVLSI), pp. 16--28, Salt Lake City, Utah, March 2001. (abstract, pdf, ps)

Rajit Manohar. An Analysis of Reshuffled Handshaking Expansions. Proceedings of the 7th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), pp. 96--105, Salt Lake City, Utah, March 2001. (abstract, ps)

Rajit Manohar. A Case for Asynchronous Computer Architecture. Proceedings of the ISCA Workshop on Complexity-Effective Design, June 2000. (abstract, pdf, ps)

Rajit Manohar and Mark Heinrich. A Case For Asynchronous Active Memories. ISCA 2000 Solving the Memory Wall Problem Workshop, June 2000. (abstract, ps)

Rajit Manohar. The Entropy of Traces in Parallel Computation. IEEE Transactions on Information Theory, 45(5):1606--1608, July 1999. (abstract, pdf, ps)

Rajit Manohar, Tak-Kwan Lee, and Alain J. Martin. Projection: A Synthesis Technique for Concurrent Systems. Proceedings of the 5th IEEE International Symposium on Advanced Research in Asynchronous Circuits and Systems (ASYNC), pp. 125--134, April 1999. (abstract, pdf, ps)

K. Rustan M. Leino and Rajit Manohar. Joining Specification Statements. Theoretical Computer Science, 216:375-394, March 1999. (abstract, ps)

Rajit Manohar and José A. Tierno. Asynchronous Parallel Prefix Computation. IEEE Transactions on Computers, Vol. 47, No. 11, 1244-1252, November 1998. (abstract, ps)

Rajit Manohar and Alain J. Martin. Slack Elasticity in Concurent Computing . Proceedings of the Fourth International Conference on the Mathematics of Program Construction (MPC), Lecture Notes in Computer Science 1422, pp. 272-285, Springer-Verlag 1998. (abstract, pdf, ps)

Alain J. Martin, Andrew Lines, Rajit Manohar, Mika Nyström, Paul Penzes, Robert Southworth, Uri V. Cummings, and Tak-Kwan Lee. The Design of an Asynchronous MIPS R3000 microprocessor. Proceedings of the 17th Conference on Advanced Research in VLSI (ARVLSI), pp. 164--181, September 1997. (abstract, pdf, ps)

Donald Dabdub and Rajit Manohar. Performance and Portability of an Air Quality Model. Parallel Computing, special issue on Regional Weather Models, 23(14):2187--2200, 1997. (abstract, ps)

José A. Tierno, Rajit Manohar, and Alain J. Martin. The Energy and Entropy of VLSI Computations. Proceedings of the 2nd IEEE International Symposium on Advanced Research in Asynchronous Circuits and Systems (ASYNC), pp. 188--196, March 1996. (abstract, ps)

Rajit Manohar and Alain J. Martin. Quasi-delay-insensitive circuits are Turing-complete. Proceedings of the 2nd IEEE International Symposium on Advanced Research in Asynchronous Circuits and Systems [invited] (ASYNC), March 1996. Available as Caltech technical report CS-TR-95-11, November 1995. (abstract, pdf, ps)

Rajit Manohar and K. Rustan M. Leino. Conditional Composition. Formal Aspects of Computing, 7(6):683--703, 1995. (abstract, ps)

K. Mani Chandy, Rajit Manohar, Berna L. Massingill, and Daniel I. Meiron. Integrating Task and Data Parallelism with the Group Communication Archetype. Proceedings of the Ninth International Parallel Processing Symposium (IPPS), pp. 724--733, 1995. (abstract, ps)

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By Research Area

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Neuromorphic Computing

Filipp Akopyan, Jun Sawada, Andrew Cassidy, Rodrigo Alvarez-Icaza, John Arthur, Paul Merolla, N Imam, Yutaka Nakamura, Pallab Datta, Gi-Joon Nam, Brian Taba, Michael Beakes, Bernard Brezzo, Jente Kuang, Rajit Manohar, William Risk, Bryan Jackson, and Dharmendra Modha. TrueNorth: Design and Tool Flow of a 65mW 1 Million Neuron Programmable Neurosynaptic Chip. IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 34(10), October 2015. (abstract, pdf)   — Keynote paper

Giovanni Rovere, Nabil Imam, Rajit Manohar, and Chiara Bartolozzi. A QDI Asynchronous AER Serializer/Deserializer Link in 180nm for Event-Based Sensors for Robotic Applications. Proceedings of the International Symposium on Circuits and Systems, May 2015. (abstract)

Andrew S. Cassidy, Rodrigo Alvarez-Icaza, Filipp Akopyan, Jun Sawada, John V. Arthur, Paul A. Merolla, Pallab Datta, Marc Gonzalez Tallada, Brian Taba, Alexander Andreopoulos, Arnon Amir, Steven K. Esser, Jeff Kusnitz, Rathinakumar Appuswamy, Chuck Haymes, Bernard Brezzo, Roger Moussalli, Ralph Bellofatto, Christian Baks, Michael Mastro, Kai Schleupen, Charles E. Cox, Ken Inoue, Steve Millman, Nabil Imam, Emmett McQuinn, Yutaka T. Nakamura, Ivan Vo, Chen Guo, Don Nguyen, Scott Lekuch, Sameh Assad, Daniel Friedman, Bryan L. Jackson, Myron D. Flickner, William P. Risk, Rajit Manohar, Dharmendra S. Modha. Real-Time Scalable Cortical Computing at 46 Giga-Synaptic OPS/Watt with ~100x Speedup in Time-to-Solution and ~100,000x Reduction in Energy-to-Solution. Proceedings of Supercomputing 2014, November 2014. (abstract, pdf)   — ACM Gordon Bell Prize finalist

Paul A. Merolla, John V. Arthur, Rodrigo Alvarez-Icaza, Andrew S. Cassidy, Jun Sawada, Filipp Akopyan, Bryan L. Jackson, Nabil Imam, Chen Guo, Yutaka Nakamura, Bernad Brezzo, Ivan Vo, Steven K. Esser, Rathinakumar Appuswamy, Brian Taba, Arnon Amir, Myron D. Flickner, William P. Risk, Rajit Manohar, and Dharmendra Modha. A Million Spiking-Neuron Integrated Circuit with a Scalable Communication Network and Interface. Science, 345(6197):668--673, August 2014. (abstract, pdf)   — IBM Research 2014 Pat Goldberg Math/CS/EE Best Paper Award

Saber Moradi, Nabil Imam, Rajit Manohar, and Giacomo Indiveri. A Memory-Efficient Routing Method for Large-Scale Spiking Neural Networks. 21st European Conference on Circuit Theory and Design, September 2013. (abstract, pdf)

Nabil Imam, Kyle Wecker, Jonathan Tse, Robert Karmazin, and Rajit Manohar. Neural Spiking Dynamics in Asynchronous Digital Circuits. 2013 International Joint Conference on Neural Networks (IJCNN), August 2013. (abstract, pdf)

Rajit Manohar. Scalable Routing in Large-Scale Neuromorphic Systems. Symposium on Large-Scale Neuromorphic Systems at the Annual International Conference of the IEEE Engineering in Medicine and Biology Society [invited], August 2012.

John Arthur, Paul Merolla, Filipp Akopyan, Rodrigo Alvarez, Andrew Cassidy, Shyamal Chandra, Steven Esser, Nabil Imam, William Risk, Daniel Rubin, Rajit Manohar and Dharmendra Modha. Building Block of a Programmable Neuromorphic Substrate: A Digital Neurosynaptic Core. 2012 International Joint Conference on Neural Networks (IJCNN), June 2012. (abstract, pdf)

Nabil Imam, Thomas Cleland, Rajit Manohar, Paul Merolla, John Arthur, Filipp Akopyan, and Dharmendra Modha. Implementation of Olfactory Bulb Glomerular Layer Computation in a Digital Neurosynaptic Core. Frontiers of Neuromorphic Engineering, Vol. 6, Number 83, June 2012. (abstract, pdf)

Nabil Imam, Filipp Akopyan, Paul Merolla, John Arthur, Rajit Manohar, and Dharmendra Modha. A Digital Neurosynaptic Core Using Event-Driven QDI Circuits. Proceedings of the 18th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2012. (abstract, pdf)   — Best paper award

Paul Merolla, John Arthur, Filipp Akopyan, Nabil Imam, Rajit Manohar, Dharmendra Modha. A Digital Neurosynaptic Core Using Embedded Crossbar Memory with 45pJ per Spike in 45nm. Proceedings of the IEEE Custom Integrated Circuits Conference (CICC), September 2011. (abstract, pdf)

Nabil Imam and Rajit Manohar. Address-Event Communication Using Token-Ring Mutual Exclusion. Proceedings of the 17th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), April 2011. (abstract, pdf)

Jon Russo, Mohammed Amduka, Keith Pendersen, Richard Lethin, Jonathan Springer, Rajit Manohar, Rami Melhem. Enabling Cognitive Architectures for UAV Mission Planning. Proceedings of the High Performance Embedded Computing Workshop (HPEC), September 2006. (abstract, pdf)   — Best paper award

Rajit Manohar and K. Mani Chandy. Δ-Dataflow Networks for Event Stream Processing. Proceedings of the IASTED International Conference on Parallel and Distributed Computing and Systems, November 2004. (abstract, pdf, ps)   — Best paper award

Design Methodology and Automation

Filipp Akopyan, Carlos Tadeo Ortega Otero, and Rajit Manohar. Hybrid Synchronous-Asynchronous Tool Flow for Emerging VLSI Design. IEEE International Workshop on Logic Synthesis, June 2016.

Wenmian Hua and Rajit Manohar. Exact Timing Analysis for Concurrent Systems. Work-in-progress session, Design Automation Conference, June 2016.

Sandra Jackson and Rajit Manohar. Gradual Synchronization. IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2016. (abstract)   — Best paper finalist

Stephen Longfield, Brittany Nkounkou, Rajit Manohar, and Ross Tate. Preventing Glitches and Short Circuits in High-Level Self-Timed Chip Specifications. 36th Annual ACM SIGPLAN Conference on Programming Language Design and Implementation (PLDI), June 2015. (abstract, pdf)

Rajit Manohar and Yoram Moses. Analyzing Isochronic Forks with Potential Causality. IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2015. (abstract, pdf)   — Best paper finalist

Robert Karmazin, Stephen Longfield, Carlos Tadeo Ortega Otero, and Rajit Manohar. Timing Driven Placement for Quasi Delay-Insensitive Circuits. IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2015. (abstract, pdf)

Carlos Tadeo Ortega Otero, Jonathan Tse, Robert Karmazin, Benjamin Hill, and Rajit Manohar. Automatic Obfuscated Cell Layout for Trusted Split-Foundry Design. IEEE International Symposium on Hardware-Oriented Security and Trust, May 2015.

Stephen Longfield and Rajit Manohar. Removing Concurrency for Rapid Functional Verification. Proceedings of the 2014 International Conference on Computer-Aided Design (ICCAD), November 2014. (abstract, pdf)

Benjamin Hill, Robert Karmazin, Carlos Tadeo Ortega Otero, Jonathan Tse, and Rajit Manohar. A Split-Foundry Asynchronous FPGA. Proceedings of the IEEE Custom Integrated Circuits Conference (CICC), September 2013. (abstract, pdf)

Robert Karmazin, Carlos Otero, and Rajit Manohar. CellTK: Automated Layout for Asynchronous Circuits with Nonstandard Cells. Proceedings of the 19th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2013. (abstract, pdf)

Stephen Longfield and Rajit Manohar. Inverting Martin Synthesis for Verification. Proceedings of the 19th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2013. (abstract, pdf)   — Best paper award

Song Peng, David Fang, John Teifel, and Rajit Manohar. Automated Synthesis for Asynchronous FPGAs. 13th ACM International Symposium on Field Programmable Gate Arrays (FPGA), February 2005. (abstract, pdf, ps)

John Teifel and Rajit Manohar. Static Tokens: Using Dataflow to Automate Concurrent Pipeline Synthesis. Proceedings of the 10th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), April 2004. (abstract, pdf, ps)

Rajit Manohar. Scalable Formal Design Methods for Asynchronous VLSI. Proceedings of the 29th ACM SIGPLAN/SIGACT Conference on the Principles of Programming Languages [invited] (POPL), Portland, OR, January 2002.

Rajit Manohar. An Analysis of Reshuffled Handshaking Expansions. Proceedings of the 7th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), pp. 96--105, Salt Lake City, Utah, March 2001. (abstract, ps)

Rajit Manohar. The Entropy of Traces in Parallel Computation. IEEE Transactions on Information Theory, 45(5):1606--1608, July 1999. (abstract, pdf, ps)

Rajit Manohar, Tak-Kwan Lee, and Alain J. Martin. Projection: A Synthesis Technique for Concurrent Systems. Proceedings of the 5th IEEE International Symposium on Advanced Research in Asynchronous Circuits and Systems (ASYNC), pp. 125--134, April 1999. (abstract, pdf, ps)

K. Rustan M. Leino and Rajit Manohar. Joining Specification Statements. Theoretical Computer Science, 216:375-394, March 1999. (abstract, ps)

Rajit Manohar and Alain J. Martin. Slack Elasticity in Concurent Computing . Proceedings of the Fourth International Conference on the Mathematics of Program Construction (MPC), Lecture Notes in Computer Science 1422, pp. 272-285, Springer-Verlag 1998. (abstract, pdf, ps)

Donald Dabdub and Rajit Manohar. Performance and Portability of an Air Quality Model. Parallel Computing, special issue on Regional Weather Models, 23(14):2187--2200, 1997. (abstract, ps)

José A. Tierno, Rajit Manohar, and Alain J. Martin. The Energy and Entropy of VLSI Computations. Proceedings of the 2nd IEEE International Symposium on Advanced Research in Asynchronous Circuits and Systems (ASYNC), pp. 188--196, March 1996. (abstract, ps)

Rajit Manohar and Alain J. Martin. Quasi-delay-insensitive circuits are Turing-complete. Proceedings of the 2nd IEEE International Symposium on Advanced Research in Asynchronous Circuits and Systems [invited] (ASYNC), March 1996. Available as Caltech technical report CS-TR-95-11, November 1995. (abstract, pdf, ps)

Rajit Manohar and K. Rustan M. Leino. Conditional Composition. Formal Aspects of Computing, 7(6):683--703, 1995. (abstract, ps)

K. Mani Chandy, Rajit Manohar, Berna L. Massingill, and Daniel I. Meiron. Integrating Task and Data Parallelism with the Group Communication Archetype. Proceedings of the Ninth International Parallel Processing Symposium (IPPS), pp. 724--733, 1995. (abstract, ps)

Energy-efficient VLSI and Arithmetic

Rajit Manohar. Comparing Stochastic and Deterministic Computing. IEEE Computer Architecture Letters, 14(2):119--122, July 2015. (abstract, pdf)   — Best of Computer Architecture Letters

Jonathan Tse, Benjamin Hill, and Rajit Manohar. A Bit of Analysis on Self-Timed Single-Bit On-Chip Links. Proceedings of the 19th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2013. (abstract, pdf)

Benjamin Tang, Stephen Longfield, Rajit Manohar, and Sunil Bhave. Low Power ASIC GPS Tracking Loops: Quantifying the Trade-Offs Between Area, Power and Accuracy. Proc. ION GNSS Technical Meeting, September 2012.    — Best presentation award

Basit Riaz Sheikh and Rajit Manohar. An Asynchronous Floating-Point Multiplier. Proceedings of the 18th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2012. (abstract, pdf)

Basit Riaz Sheikh and Rajit Manohar. Energy-efficient Pipeline Templates for High Performance Asynchronous Circuits. ACM Journal on Emerging Technologies in Computer Systems (special issue on asynchrony in system design), 7(4), December 2011. (abstract, pdf)

Basit Riaz Sheikh and Rajit Manohar. An Operand-Optimized Asynchronous IEEE 754 Double-precision floating-point adder. Proceedings of the 16th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2010. (abstract, pdf)   — Best paper award

Carlos Tadeo Ortega Otero, Jonathan Tse, and Rajit Manohar. Static Power Reduction Techniques for Asynchronous Circuits. Proceedings of the 16th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2010. (abstract, pdf)

Christopher LaFrieda and Rajit Manohar. Reducing Power Consumption with Relaxed Quasi Delay-Insensitive Circuits. Proceedings of the 15th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2009. (abstract, pdf)

David Fang, Filipp Akopyan, and Rajit Manohar. Self-Timed Thermally Aware Circuits. IEEE Computer Society Annual Symposium on VLSI (ISVLSI), March 2006. (abstract, pdf)

David Fang and Rajit Manohar. Non-Uniform Access Asynchronous Register Files. Proceedings of the 10th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), April 2004. (abstract, pdf, ps)

John Teifel and Rajit Manohar. A High Speed Clockless Serial Link Tranceiver. Proceedings of the 9th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), pp. 151--161, Vancouver, BC, May 2003. (abstract, pdf, ps)

Virantha Ekanayake and Rajit Manohar. Asynchronous DRAM Design and Synthesis. Proceedings of the 9th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), pp. 174--183, Vancouver, BC, May 2003. (abstract, pdf, ps)

John Teifel, David Fang, David Biermann, Clinton Kelly IV, and Rajit Manohar. Energy-Efficient Pipelines. Proceedings of the 8th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), pp. 21--31, Manchester, UK, March 2002. (abstract, ps)

Rajit Manohar. Width-Adaptive Data Word Architectures. Proceedings of the 19th Conference on Advanced Research in VLSI (ARVLSI), pp. 112--129, Salt Lake City, Utah, March 2001. (abstract, pdf, ps)

Rajit Manohar. The Entropy of Traces in Parallel Computation. IEEE Transactions on Information Theory, 45(5):1606--1608, July 1999. (abstract, pdf, ps)

Rajit Manohar and José A. Tierno. Asynchronous Parallel Prefix Computation. IEEE Transactions on Computers, Vol. 47, No. 11, 1244-1252, November 1998. (abstract, ps)

José A. Tierno, Rajit Manohar, and Alain J. Martin. The Energy and Entropy of VLSI Computations. Proceedings of the 2nd IEEE International Symposium on Advanced Research in Asynchronous Circuits and Systems (ASYNC), pp. 188--196, March 1996. (abstract, ps)

Asynchronous FPGAs

Carlos Tadeo Ortega Otero, Jonathan Tse, Robert Karmazin, Benjamin Hill, and Rajit Manohar. Automatic Obfuscated Cell Layout for Trusted Split-Foundry Design. IEEE International Symposium on Hardware-Oriented Security and Trust, May 2015.

Benjamin Hill, Robert Karmazin, Carlos Tadeo Ortega Otero, Jonathan Tse, and Rajit Manohar. A Split-Foundry Asynchronous FPGA. Proceedings of the IEEE Custom Integrated Circuits Conference (CICC), September 2013. (abstract, pdf)

Christopher LaFrieda, Benjamin Hill, and Rajit Manohar. An Asynchronous FPGA with Two-Phase Enable-Scaled Routing. Proceedings of the 16th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2010. (abstract, pdf)   — Best paper finalist

S. Ramaswamy, L. Rockett, D. Patel, S. Danziger, R. Manohar, C. Kelly, J. Holt, V. Ekanayake, D. Elftmann. A Radiation Hardened Reconfigurable FPGA. Proceedings of the IEEE Aerospace Conference, March 2009. (abstract, pdf)

Rajit Manohar, Clinton Kelly IV, et al. Development of Reprogrammable Low Power High Density High Speed RADHARD FPGAs. Government Microcircuit Applications and Critical Technology Conference, March 2007.

Rajit Manohar. Reconfigurable Asynchronous Logic. Proceedings of the IEEE Custom Integrated Circuits Conference (CICC), September 2006. (abstract, pdf)

David Fang, Christopher LaFrieda, Song Peng, and Rajit Manohar. A 3-Tier Asynchronous FPGA. Proceedings of the 23rd International VLSI/ULSI Multilevel Interconnection Conference (VMIC), September 2006. (abstract, pdf)

Rajit Manohar, Clinton Kelly IV, J. Holt, Chris Liu, Leonard Rockett, Dinu Patel, Steven Danzinger. Application of Low Power High Density Gigahertz Speed Commercial FPGA Technology to High Radiation Applications using RADHARD-by-Process Techniques. Proceedings of the 9th Military and Aerospace Programmable Logic Devices International Conference, September 2006.

David Fang, John Teifel, and Rajit Manohar. A High-Performance Asynchronous FPGA: Test Results. 2005 IEEE Symposium on Field-Programmable Custom Computing Machines (FCCM), April 2005. (abstract, pdf)

Song Peng, David Fang, John Teifel, and Rajit Manohar. Automated Synthesis for Asynchronous FPGAs. 13th ACM International Symposium on Field Programmable Gate Arrays (FPGA), February 2005. (abstract, pdf, ps)

John Teifel and Rajit Manohar. An Asynchronous Dataflow FPGA Architecture. IEEE Transactions on Computers (special issue on field-programmable logic), November 2004. (abstract, pdf)

John Teifel and Rajit Manohar. Static Tokens: Using Dataflow to Automate Concurrent Pipeline Synthesis. Proceedings of the 10th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), April 2004. (abstract, pdf, ps)

John Teifel and Rajit Manohar. Highly Pipelined Asynchronous FPGAs. 12th ACM International Symposium on Field-Programmable Gate Arrays (FPGA), Monterey, CA, February 2004. [Please see abstract]. (abstract, pdf, ps)

John Teifel and Rajit Manohar. Programmable Asynchronous Pipeline Arrays. Proceedings of the 13th International Conference on Field Programmable Logic and Applications (FPL), pp. 345--354, Lisbon, Portugal, September 2003. (abstract, pdf, ps)

Ultra Low Power Embedded Systems

Carlos Tadeo Ortega Otero, Jonathan Tse, and Rajit Manohar. AES Hardware-Software Co-Design in WSN. IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2015. (abstract, pdf)

Benjamin Tang, Sunil Bhave, and Rajit Manohar. Low Power Asynchronous VLSI with NEM Relays. Proceedings of the 20th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2014. (abstract, pdf)   — Best paper finalist

Jaeyeon Kihm, François Guimbretière, Julia Karl, Rajit Manohar. Using Asymmetric Cores to Reduce Power Consumption for Interactive Devices with Bi-Stable Displays. Proceedings of the ACM CHI Conference on Human Factors in Computing Systems (CHI), April 2014. (abstract, pdf)

Carlos Tadeo Ortega Otero, Jonathan Tse, Robert Karmazin, Benjamin Hill, Rajit Manohar. ULSNAP: An Ultra-low Power Event-Driven Microcontroller for Sensor Network Nodes. Proceedings of the IEEE International Symposium on Quality Electronic Design, March 2014. (abstract, pdf)

François Guimbretière, Shenwei Liu, Han Wang, Rajit Manohar. An Asymmetric Dual-Processor Architecture for Low Power Information Appliances. ACM Transactions on Embedded Computing Systems, 13(4), February 2014. (abstract, pdf)

Jonathan Tse, Benjamin Hill, and Rajit Manohar. A Bit of Analysis on Self-Timed Single-Bit On-Chip Links. Proceedings of the 19th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2013. (abstract, pdf)

Benjamin Tang, Stephen Longfield, Rajit Manohar, and Sunil Bhave. Low Power ASIC GPS Tracking Loops: Quantifying the Trade-Offs Between Area, Power and Accuracy. Proc. ION GNSS Technical Meeting, September 2012.    — Best presentation award

Benjamin Tang, Stephen Longfield, Sunil Bhave, and Rajit Manohar. A Low Power Asynchronous GPS Baseband Processor. Proceedings of the 18th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2012. (abstract, pdf)

Carlos Tadeo Ortega Otero, Jonathan Tse, and Rajit Manohar. Static Power Reduction Techniques for Asynchronous Circuits. Proceedings of the 16th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2010. (abstract, pdf)

Filipp Akopyan, Rajit Manohar, and A. Apsel. A level-crossing Flash Asynchronous Analog-to-Digital Converter. Proceedings of the 12th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), March 2006. (abstract, pdf)   — Best paper award

Yao-Win Hong, Birsen Sirkeci-Mergen, Anna Scaglione, and Rajit Manohar. Dense Sensor Networks are also Energy-efficient: when `more' is `less'. Proceedings of MILCOM 2005, October 2005. (abstract, pdf)   — IEEE Fred Ellersick Award for the best unclassified paper at MILCOM

Virantha Ekanayake, Clinton Kelly IV, and Rajit Manohar. BitSNAP: Dynamic Significance Compression for a Low Power Sensor Network Asynchronous Processor. Proceedings of the 11th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), March 2005. (abstract, pdf, ps)   — Best paper finalist

Virantha Ekanayake, Clinton Kelly IV, and Rajit Manohar. An Ultra-low-power Processor for Sensor Networks. Proceedings of the 11th International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS), October 2004. (abstract, pdf, ps)

Clinton Kelly IV, Virantha Ekanayake, and Rajit Manohar. SNAP: A Sensor Network Asynchronous Processor. Proceedings of the 9th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), pp. 24--33, Vancouver, BC, May 2003. (abstract, pdf, ps)

Rajit Manohar and Anna Scaglione. Power Optimal Routing in Wireless Networks. IEEE International Conference on Communications, pp. 2979--2984, Anchorage, AK, May 2003. (abstract, pdf)

José A. Tierno, Rajit Manohar, and Alain J. Martin. The Energy and Entropy of VLSI Computations. Proceedings of the 2nd IEEE International Symposium on Advanced Research in Asynchronous Circuits and Systems (ASYNC), pp. 188--196, March 1996. (abstract, ps)

Asynchronous Computer Architecture

Sandra Jackson and Rajit Manohar. Gradual Synchronization. IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2016. (abstract)   — Best paper finalist

Rajit Manohar. Comparing Stochastic and Deterministic Computing. IEEE Computer Architecture Letters, 14(2):119--122, July 2015. (abstract, pdf)   — Best of Computer Architecture Letters

Paul A. Merolla, John V. Arthur, Rodrigo Alvarez-Icaza, Andrew S. Cassidy, Jun Sawada, Filipp Akopyan, Bryan L. Jackson, Nabil Imam, Chen Guo, Yutaka Nakamura, Bernad Brezzo, Ivan Vo, Steven K. Esser, Rathinakumar Appuswamy, Brian Taba, Arnon Amir, Myron D. Flickner, William P. Risk, Rajit Manohar, and Dharmendra Modha. A Million Spiking-Neuron Integrated Circuit with a Scalable Communication Network and Interface. Science, 345(6197):668--673, August 2014. (abstract, pdf)   — IBM Research 2014 Pat Goldberg Math/CS/EE Best Paper Award

Jaeyeon Kihm, François Guimbretière, Julia Karl, Rajit Manohar. Using Asymmetric Cores to Reduce Power Consumption for Interactive Devices with Bi-Stable Displays. Proceedings of the ACM CHI Conference on Human Factors in Computing Systems (CHI), April 2014. (abstract, pdf)

Carlos Tadeo Ortega Otero, Jonathan Tse, Robert Karmazin, Benjamin Hill, Rajit Manohar. ULSNAP: An Ultra-low Power Event-Driven Microcontroller for Sensor Network Nodes. Proceedings of the IEEE International Symposium on Quality Electronic Design, March 2014. (abstract, pdf)

François Guimbretière, Shenwei Liu, Han Wang, Rajit Manohar. An Asymmetric Dual-Processor Architecture for Low Power Information Appliances. ACM Transactions on Embedded Computing Systems, 13(4), February 2014. (abstract, pdf)

Christopher LaFrieda, Engin Ipek, Jose Martinez, and Rajit Manohar. Utilizing dynamically coupled cores to form a resilient chip multiprocessor. Proc. International Conference on Dependable Systems and Networks (DSN), June 2007. (abstract, pdf)

Jon Russo, Mohammed Amduka, Keith Pendersen, Richard Lethin, Jonathan Springer, Rajit Manohar, Rami Melhem. Enabling Cognitive Architectures for UAV Mission Planning. Proceedings of the High Performance Embedded Computing Workshop (HPEC), September 2006. (abstract, pdf)   — Best paper award

Virantha Ekanayake, Clinton Kelly IV, and Rajit Manohar. BitSNAP: Dynamic Significance Compression for a Low Power Sensor Network Asynchronous Processor. Proceedings of the 11th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), March 2005. (abstract, pdf, ps)   — Best paper finalist

Rajit Manohar and K. Mani Chandy. Δ-Dataflow Networks for Event Stream Processing. Proceedings of the IASTED International Conference on Parallel and Distributed Computing and Systems, November 2004. (abstract, pdf, ps)   — Best paper award

Virantha Ekanayake, Clinton Kelly IV, and Rajit Manohar. An Ultra-low-power Processor for Sensor Networks. Proceedings of the 11th International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS), October 2004. (abstract, pdf, ps)

David Biermann, Emin Gun Sirer, and Rajit Manohar. A Rate Matching-based Approach to Dynamic Voltage Scaling. Proceedings of the First Watson Conference on the Interaction between Architecture, Circuits, and Compilers, October 2004. (abstract, pdf, ps)

David Fang and Rajit Manohar. Non-Uniform Access Asynchronous Register Files. Proceedings of the 10th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), April 2004. (abstract, pdf, ps)

Clinton Kelly IV and Rajit Manohar. An Event-Synchronization Protocol for Parallel Simulation of Large-Scale Wireless Networks. Seventh IEEE International Symposium on Distributed Simulation and Real Time Applications, October 2003. (abstract, pdf, ps)

Clinton Kelly IV, Virantha Ekanayake, and Rajit Manohar. SNAP: A Sensor Network Asynchronous Processor. Proceedings of the 9th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), pp. 24--33, Vancouver, BC, May 2003. (abstract, pdf, ps)

Virantha Ekanayake and Rajit Manohar. Asynchronous DRAM Design and Synthesis. Proceedings of the 9th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), pp. 174--183, Vancouver, BC, May 2003. (abstract, pdf, ps)

Rajit Manohar and Clinton Kelly IV. Network on a Chip: Modeling Wireless Networks with Asynchronous VLSI. IEEE Communications Magazine, pp. 149--155, November 2001. (abstract, pdf, ps)

Rajit Manohar. Width-Adaptive Data Word Architectures. Proceedings of the 19th Conference on Advanced Research in VLSI (ARVLSI), pp. 112--129, Salt Lake City, Utah, March 2001. (abstract, pdf, ps)

Rajit Manohar, Mika Nyström, and Alain J. Martin. Precise Exceptions in Asynchronous Processors. Proceedings of the 19th Conference on Advanced Research in VLSI (ARVLSI), pp. 16--28, Salt Lake City, Utah, March 2001. (abstract, pdf, ps)

Rajit Manohar. A Case for Asynchronous Computer Architecture. Proceedings of the ISCA Workshop on Complexity-Effective Design, June 2000. (abstract, pdf, ps)

Rajit Manohar and Mark Heinrich. A Case For Asynchronous Active Memories. ISCA 2000 Solving the Memory Wall Problem Workshop, June 2000. (abstract, ps)

Alain J. Martin, Andrew Lines, Rajit Manohar, Mika Nyström, Paul Penzes, Robert Southworth, Uri V. Cummings, and Tak-Kwan Lee. The Design of an Asynchronous MIPS R3000 microprocessor. Proceedings of the 17th Conference on Advanced Research in VLSI (ARVLSI), pp. 164--181, September 1997. (abstract, pdf, ps)

Three Dimensional Integration

Jonathan Tse, Benjamin Hill, and Rajit Manohar. A Bit of Analysis on Self-Timed Single-Bit On-Chip Links. Proceedings of the 19th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), May 2013. (abstract, pdf)

T. Robert Harris, Shivam Priyadarshi, Samson Melamed, Carlos Otero, Rajit Manohar, Steven R. Dooley, Nikhil M. Kriplani, W. Rhett Davis, Paul D. Franzon, and Michael B. Steer. A Transient Electrothermal Analysis of Three-Dimensional Integrated Circuits. IEEE Transactions on Components and Packaging Technologies, 2(4):660–667, April 2012. (abstract)

S. Priyadarshi, T. R. Harris, S. Melamed, C. Otero, N. Kriplani, C. E. Christoffersen, R. Manohar, S. R. Dooley, W. R. Davis, P. D. Franzon, and M. B. Steer. Dynamic electrothermal simulation of three dimensional integrated circuits using standard cell macromodels. IET Circuits, Devices, and Systems, 6(1):35–44, January 2012.

Filipp Akopyan, Carlos Tadeo Ortega Otero, David Fang, Sandra Jackson, and Rajit Manohar. Variability in 3-D Integrated Circuits. Proceedings of the IEEE Custom Integrated Circuits Conference (CICC), September 2008. (abstract, pdf)

David Fang, Christopher LaFrieda, Song Peng, and Rajit Manohar. A 3-Tier Asynchronous FPGA. Proceedings of the 23rd International VLSI/ULSI Multilevel Interconnection Conference (VMIC), September 2006. (abstract, pdf)

Song Peng and Rajit Manohar. Yield Enhancement of Asynchronous Logic Circuits through 3-Dimensional Integration Technology. Proceedings of the ACM Great Lakes Symposium on VLSI (GLVLSI), April 2006. (abstract, pdf)

Christianto C. Liu, Jeng-Huei Chen, Rajit Manohar, and Sandip Tiwari. Mapping Multimedia Applications to 3-D System-on-Chip. Proceedings of the 2005 IEEE International Symposium on Circuits and Systems, May 2005.

Resilient Asynchronous Systems

S. Ramaswamy, L. Rockett, D. Patel, S. Danziger, R. Manohar, C. Kelly, J. Holt, V. Ekanayake, D. Elftmann. A Radiation Hardened Reconfigurable FPGA. Proceedings of the IEEE Aerospace Conference, March 2009. (abstract, pdf)

Christopher LaFrieda, Engin Ipek, Jose Martinez, and Rajit Manohar. Utilizing dynamically coupled cores to form a resilient chip multiprocessor. Proc. International Conference on Dependable Systems and Networks (DSN), June 2007. (abstract, pdf)

Rajit Manohar, Clinton Kelly IV, et al. Development of Reprogrammable Low Power High Density High Speed RADHARD FPGAs. Government Microcircuit Applications and Critical Technology Conference, March 2007.

Rajit Manohar, Clinton Kelly IV, J. Holt, Chris Liu, Leonard Rockett, Dinu Patel, Steven Danzinger. Application of Low Power High Density Gigahertz Speed Commercial FPGA Technology to High Radiation Applications using RADHARD-by-Process Techniques. Proceedings of the 9th Military and Aerospace Programmable Logic Devices International Conference, September 2006.

Song Peng and Rajit Manohar. Yield Enhancement of Asynchronous Logic Circuits through 3-Dimensional Integration Technology. Proceedings of the ACM Great Lakes Symposium on VLSI (GLVLSI), April 2006. (abstract, pdf)

Song Peng and Rajit Manohar. Self-healing Asynchronous Arrays. Proceedings of the 12th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), March 2006. (abstract, pdf)

Song Peng and Rajit Manohar. Efficient Failure Detection in Pipelined Asynchronous Circuits. Proceedings of the IEEE Symposium on Defect and Fault Tolerance in VLSI Systems (DFT), October 2005. (abstract, pdf)

Song Peng and Rajit Manohar. Fault Tolerant Asynchronous Adders through Dynamic Self-reconfiguration. Proceedings of the IEEE International Conference on Computer Design (ICCD), October 2005. (abstract, pdf)

Christopher LaFrieda and Rajit Manohar. Robust Fault Detection and Isolation Techniques for Quasi Delay-Insensitive Circuits. Proceedings of the International Conference on Dependable Systems and Networks (DSN), July 2004. (abstract, pdf, ps)

Selected Technical Reports:

Rajit Manohar. The Impact of Asynchrony on Computer Architecture. Ph.D. thesis, California Institute of Technology, 1998. Available as Caltech technical report CS-TR-98-12 from the Caltech Computer Science department.

Rajit Manohar and Paolo A.G. Sivilotti. Composing Processes Using Modified Rely-Guarantee Specifications. Caltech technical report CS-TR-96-22, November 1996.

Rajit Manohar. Folded FIFOs. Caltech technical report CS-TR-95-09, July 1995.

Issued Patents:

Rajit Manohar and Alain J. Martin. Parallel prefix operations in asynchronous processors. US Patent No. 5,999,961, December 1999.

Rajit Manohar, Mika Nyström, and Alain J. Martin. Exception processing in asynchronous processors. US Patent No. 6,301,655, October 2001.

*Alain J. Martin, Andrew Lines, Rajit Manohar, Uri Cummings, Mika Nyström, Pipelined asynchronous processing. US Patent No. 6,381,692, April 2002.

*Alain J. Martin, Andrew Lines, Rajit Manohar, Uri Cummings, Mika Nyström, Pipelined asynchronous processing. US Patent No. 6,658,550, December 2003.

Mika Nyström, Rajit Manohar, and Alain J. Martin. Method and Apparatus for a failure-free synchronizer. US Patent No. 6,609,203, February 2004.

*John Teifel, Rajit Manohar. Programmable Asynchronous Pipeline Arrays. US Patent No. 7,157,934, January 2007.

David Fang, Filipp Akopyan, Rajit Manohar. Self-timed thermally aware circuits and methods of use thereof. US Patent No. 7,411,439, August 2008.

Filipp Akopyan, Alyssa Apsel, Rajit Manohar. Asynchronous Analog-to-Digital converter and method. US Patent No. 7,466,258, December 2008.

*Rajit Manohar, Clinton Kelly IV. Fault Tolerant Asynchronous Circuits. US Patent No. 7,504,851, March 2009.

*Rajit Manohar, Clinton Kelly IV. Fault Tolerant Asynchronous Circuits. US Patent No. 7,505,304, March 2009.

Rajit Manohar, Clinton Kelly IV. Event-synchronization protocol for parallel simulation of large-scale wireless networks. US Patent No. 7,564,809, July 2009.

*Rajit Manohar. Systems and methods for performing automated conversion of representations of synchronous circuit designs to and from representations of asynchronous circuit designs. US Patent No. 7,610,567, October 2009.

*Rajit Manohar. Methods and systems for converting a synchronous circuit fabric into an asynchronous dataflow circuit fabric. US Patent No. 7,614,029, November 2009.

*Rajit Manohar, Gregor Martin, J. Holt. Synchronous to asynchronous logic conversion. US Patent No. 7,739,628, June 2010.

*Rajit Manohar, Clinton Kelly IV. Fault tolerant asynchronous circuits. US Patent No. 7,741,864, June 2010.

*Rajit Manohar, Clinton Kelly IV. Sensor-network processors using event-driven architecture. US Patent No. 7,788,332, August 2010.

*Rajit Manohar and Clinton Kelly, IV. Reconfigurable Logic Fabrics for Integrated Circuits and Systems and Methods for Configuring Reconfigurable Logic Fabrics. US Patent 7,880,499, February 2011.

*Rajit Manohar, Clinton Kelly, IV, Virantha Ekanayake, Christopher LaFrieda, Hong Tam, Ilya Ganusov, Raymond Nijssen, Marcel van der Goot. Asynchronous Conversion Circuitry: Apparatus, Systems, and Methods. US Patent 7,900,078, March 2011.

*Raymond Njissen, Kamal Chaudhary, Rajit Manohar, Christopher LaFrieda, Clinton Kelly IV, Virantha Ekanayake. One Phase Logic. US Patent 7,932,746, April 2011.

*Rajit Manohar, Clinton Kelly IV, Virantha Ekanayake. Asynchronous Circuit Representations of Synchronous Circuit with Asynchronous Inputs. US Patent 7,982,502, July 2011.

*Rajit Manohar, Clinton Kelly IV. Fault Tolerant Asynchronous Circuits. US Patent 8,004,877, August 2011.

*Rajit Manohar, Clinton Kelly, IV, Virantha Ekanayake, Christopher LaFrieda, Hong Tam, Ilya Ganusov, Raymond Nijssen, Marcel van der Goot. Asynchronous Conversion Circuitry: Apparatus, Systems, and Methods. US Patent 8,078,899, December 2011.

*Gael Paul, Denny Scharf, Rajit Manohar. Logic performance in cyclic structures. US Patent 8,104,004, January 2012.

*Raymond Njissen, Kamal Chaudhary, Rajit Manohar, Christopher LaFrieda, Clinton Kelly IV, Virantha Ekanayake. One Phase Logic. US Patent 8,106,683, January 2012.

*Rajit Manohar and Clinton Kelly, IV. Reconfigurable Logic Fabrics for Integrated Circuits and Systems and Methods for Configuring Reconfigurable Logic Fabrics. US Patent 8,125,242, February 2012.

*Rajit Manohar, Clinton Kelly, IV, Virantha Ekanayake, and Gael Paul. Reset mechanism conversion. US Patent 8,161,435, April 2012.

*Rajit Manohar, Ilya Ganusov, Virantha Ekanayake, Kamal Chaudhury, Clinton Kelly, IV. Non-predicated to predicated conversion of asynchronous representations. US Patent 8,191,019, May 2012.

*Rajit Manohar, Clinton Kelly IV. Fault Tolerant Asynchronous Circuits. US Patent 8,222,915, July 2012.

*Virantha Ekanayake, Clinton Kelly, Rajit Manohar, Christopher LaFrieda, Gael Paul, Raymond Nijssen, Marcel van der Goot. Token enhanced asynchronous conversion of synchronous circuits. US Patent 8,234,607, July 2012.

*Rajit Manohar, Gregor Martin, J. Holt. Synchronous to asynchronous logic conversion. US Patent 8,291,358, October 2012.

*Virantha Ekanayake, Clinton Kelly, Rajit Manohar. Programmable crossbar structures in asynchronous systems. US Patent 8,300,635, October 2012.

*Rajit Manohar, Clinton Kelly, Virantha Ekanayake, Gael Paul, Raymond Nijssen, Marcel van der Goot. Multi-clock asynchroous logic circuits. US Patent 8,301,933, October 2012.

*Rajit Manohar. Converting a synchronous circuit design into an asynchronous design. US Patent 8,375,339, February 2013.

*Rajit Manohar, Clinton Kelly IV, Virantha Ekanayake, Gael Paul. Reset mechanism conversion. US Patent 8,443,315, May 2013.

*Rajit Manohar. Automated conversion of synchronous to asynchronous circuit design representations. US Patent 8,453,079, May 2013.

*Raymond Njissen, Kamal Chaudhary, Rajit Manohar, Christopher LaFrieda, Clinton Kelly IV, Virantha Ekanayake. One Phase Logic. US Patent 8,593,176, November 2013.

*Rajit Manohar, Clinton Kelly IV. Reconfigurable logic fabrics for integrated circuits and systems and methods for configuring reconfigurable logic fabrics. US Patent 8,575,959, November 2013.

*Rajit Manohar, Gael Paul, Raymond Nijssen, Marcel van der Goot, Clinton Kelly, Virantha Ekanayake. Asynchronous systems analysis. US Patent 8,661,378, February 2014.

*Rajit Manohar, Clinton Kelly. Reconfigurable logic fabrics for integrated circuits and systems and methods for configuring reconfigurable logic fabrics. US Patent 8,949,759, February 2015.

*Rajit Manohar, Clinton Kelly, Virantha Ekanayake. Asynchronous pipelined interconnect architecture with fanout support. US Patent 8,964,795, February 2015.

* = either licensed or filed by industry

Notes:

These are "scraps of paper" that are part of my research notes. Some of them turn into publications, but they all contain some idea that I thought was worth recording at the time. If you are interested in any of them (some of them have been cited by papers), send me e-mail.