20092021
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Research Output 2009 2019

  • 17 Article
  • 15 Conference contribution
  • 1 Conference article
2019
2 Citations (Scopus)

Exploiting algorithmic noise tolerance for scalable on-chip voltage regulation

Wang, L., Khatamifard, S. K., Karpuzcu, U. & Kose, S., Jan 2019, In : IEEE Transactions on Very Large Scale Integration (VLSI) Systems. 27, 1, p. 229-242 14 p., 8528543.

Research output: Contribution to journalArticle

Voltage control
Aging of materials
Knobs
Voltage regulators
Shift registers
1 Citation (Scopus)

In-memory processing on the spintronic cram: From hardware design to application mapping

Zabihi, M., Chowdhury, Z. I., Zhao, Z., Karpuzcu, U. R., Wang, J. P. & Sapatnekar, S. S., Aug 1 2019, In : IEEE Transactions on Computers. 68, 8, p. 1159-1173 15 p., 8416761.

Research output: Contribution to journalArticle

Spintronics
Magnetoelectronics
Hardware Design
Computer hardware
Data storage equipment

PIMBALL: Binary neural networks in spintronic memory

Resch, S., Khatamifard, S. K., Chowdhury, Z. I., Zabihi, M., Zhao, Z., Wang, J. P., Sapatnekar, S. S. & Karpuzcu, U. R., Oct 2019, In : ACM Transactions on Architecture and Code Optimization. 16, 4, A41.

Research output: Contribution to journalArticle

Magnetoelectronics
Neural networks
Data storage equipment
Particle accelerators
Program processors
1 Citation (Scopus)

POWERT channels: A novel class of covert communication exploiting power management vulnerabilities

Khatamifard, S. K., Wang, L., Das, A., Kose, S. & Karpuzcu, U. R., Mar 26 2019, Proceedings - 25th IEEE International Symposium on High Performance Computer Architecture, HPCA 2019. Institute of Electrical and Electronics Engineers Inc., p. 291-303 13 p. 8675190. (Proceedings - 25th IEEE International Symposium on High Performance Computer Architecture, HPCA 2019).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Channel capacity
Communication
Hardware
Power management
Experiments

Special Session: Does Approximation Make Testing Harder (or Easier)?

Bahar, R. I., Karpuzcu, U. & Misailovic, S., Apr 2019, 2019 IEEE 37th VLSI Test Symposium, VTS 2019. IEEE Computer Society, 8758649. (Proceedings of the IEEE VLSI Test Symposium; vol. 2019-April).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Testing
Learning systems
Energy conservation
Hardware

Spintronic In-Memory Pattern Matching Using Computational RAM (CRAM)

Chowdhury, Z. I., Khatamifard, S. K., Zhao, Z., Zabihi, M., Resch, S., Razaviyayn, M., Wang, J. P., Sapatnekar, S. & Karpuzcu, U. R., Jan 1 2019, (Accepted/In press) In : IEEE Journal on Exploratory Solid-State Computational Devices and Circuits.

Research output: Contribution to journalArticle

Open Access
Magnetoelectronics
Pattern matching
Random access storage
Data storage equipment
Spin Hall effect
1 Citation (Scopus)

Using Spin-Hall MTJs to Build an Energy-Efficient In-memory Computation Platform

Zabihi, M., Zhao, Z., Mahendra, D. C., Chowdhury, Z. I., Resch, S., Peterson, T., Karpuzcu, U. R., Wang, J. P. & Sapatnekar, S. S., Apr 23 2019, Proceedings of the 20th International Symposium on Quality Electronic Design, ISQED 2019. IEEE Computer Society, p. 52-57 6 p. 8697377. (Proceedings - International Symposium on Quality Electronic Design, ISQED; vol. 2019-March).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Data storage equipment
Spin Hall effect
Convolution
Processing
2018
2 Citations (Scopus)

A New Class of Covert Channels Exploiting Power Management Vulnerabilities

Karen Khatamifard, S., Wang, L., Kose, S. & Karpuzcu, U. R., Jul 1 2018, In : IEEE Computer Architecture Letters. 17, 2, p. 201-204 4 p., 8419335.

Research output: Contribution to journalArticle

Hardware
Communication
Power management
9 Citations (Scopus)

Approximate communication: Techniques for reducing communication bottlenecks in large-scale parallel systems

Betzel, F., Khatamifard, K., Suresh, H., Lilja, D. J., Sartori, J. & Karpuzcu, U., Jan 2018, In : ACM Computing Surveys. 51, 1, 1.

Research output: Contribution to journalArticle

Parallel Systems
Large-scale Systems
Communication
Degradation
Synchronization
8 Citations (Scopus)

Efficient In-Memory Processing Using Spintronics

Chowdhury, Z. I., Harms, J. D., Khatamifard, S. K., Zabihi, M., Lv, Y., Lyle, A. P., Sapatnekar, S. S., Karpuzcu, U. & Wang, J., Jan 1 2018, In : IEEE Computer Architecture Letters. 17, 1, p. 42-46 5 p.

Research output: Contribution to journalArticle

Magnetoelectronics
Data storage equipment
Processing
Random access storage
8 Citations (Scopus)

Mitigation of NBTI induced performance degradation in on-chip digital LDOs

Wang, L., Khatamifard, S. K., Karpuzcu, U. R. & Köse, S., Apr 19 2018, Proceedings of the 2018 Design, Automation and Test in Europe Conference and Exhibition, DATE 2018. Institute of Electrical and Electronics Engineers Inc., p. 803-808 6 p. (Proceedings of the 2018 Design, Automation and Test in Europe Conference and Exhibition, DATE 2018; vol. 2018-January).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Voltage regulators
Shift registers
Degradation
Mobile devices
Loads (forces)
1 Citation (Scopus)

On Approximate Speculative Lock Elision

Khatamifard, S. K., Akturk, I. & Karpuzcu, U., Apr 1 2018, In : IEEE Transactions on Multi-Scale Computing Systems. 4, 2, p. 141-151 11 p.

Research output: Contribution to journalArticle

Synchronization
Scalability
Semantics
Computer hardware
Hardware
2 Citations (Scopus)

On Memory System Design for Stochastic Computing

Karen Khatamifard, S., Hassan Najafi, M., Ghoreyshi, A., Karpuzcu, U. & Lilja, D. J., Jul 1 2018, In : IEEE Computer Architecture Letters. 17, 2, p. 117-121 5 p.

Research output: Contribution to journalArticle

Systems analysis
Data storage equipment
Stochastic systems
2 Citations (Scopus)

Toward Dynamic Precision Scaling

Yesil, S., Akturk, I. & Karpuzcu, U. R., Jul 1 2018, In : IEEE Micro. 38, 4, p. 30-39 10 p., 8430621.

Research output: Contribution to journalArticle

Trading Computation for Communication: A Taxonomy of Data Recomputation Techniques

Akturk, I. & Karpuzcu, U., Jan 1 2018, (Accepted/In press) In : IEEE Transactions on Emerging Topics in Computing.

Research output: Contribution to journalArticle

Taxonomies
Communication
Energy efficiency
Systems analysis
Bandwidth
2017

AMNESIAC: Amnesic automatic computer trading computation for communication for energy efficiency

Akturk, I. & Karpuzcu, U. R., Apr 4 2017, ASPLOS 2017 - 22nd International Conference on Architectural Support for Programming Languages and Operating Systems. Association for Computing Machinery, p. 811-824 14 p. (International Conference on Architectural Support for Programming Languages and Operating Systems - ASPLOS; vol. Part F127193).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Energy efficiency
Communication
Energy utilization
Data storage equipment
Bandwidth
8 Citations (Scopus)

Efficiency, Stability, and Reliability Implications of Unbalanced Current Sharing Among Distributed On-Chip Voltage Regulators

Wang, L., Khatamifard, S. K., Uzun, O. A., Karpuzcu, U. R. & Köse, S., Nov 2017, In : IEEE Transactions on Very Large Scale Integration (VLSI) Systems. 25, 11, p. 3019-3032 14 p., 8025419.

Research output: Contribution to journalArticle

Voltage regulators
Voltage control
Microprocessor chips
Degradation
9 Citations (Scopus)

ThermoGater: Thermally-aware on-chip voltage regulation

Karen Khatamifard, S., Wang, L., Yu, W., Köse, S. & Karpuzcu, U. R., Jun 24 2017, ISCA 2017 - 44th Annual International Symposium on Computer Architecture - Conference Proceedings. Institute of Electrical and Electronics Engineers Inc., p. 120-132 13 p. (Proceedings - International Symposium on Computer Architecture; vol. Part F128643).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Voltage control
Electric potential
Voltage regulators
Governors
Thermal gradients
2016
1 Citation (Scopus)

Accuracy bugs: A new class of concurrency bugs to exploit algorithmic noise tolerance

Akturk, I., Akram, R., Islam, M. M., Muzahid, A. & Karpuzcu, U., Dec 2016, In : ACM Transactions on Architecture and Code Optimization. 13, 4, 48.

Research output: Contribution to journalArticle

Parallel programming
Semantics
3 Citations (Scopus)

Snatch: Opportunistically reassigning power allocation between processor and memory in 3D stacks

Skarlatos, D., Thomas, R., Agrawal, A., Qin, S., Pilawa-Podgurski, R., Karpuzcu, U. R., Teodorescu, R., Kim, N. S. & Torrellas, J., Dec 14 2016, MICRO 2016 - 49th Annual IEEE/ACM International Symposium on Microarchitecture. IEEE Computer Society, 7783757. (Proceedings of the Annual International Symposium on Microarchitecture, MICRO; vol. 2016-December).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Data storage equipment
Costs
Voltage regulators
6 Citations (Scopus)

System-Level Power Analysis of a Multicore Multipower Domain Processor with ON-Chip Voltage Regulators

Paul, A., Park, S. P., Somasekhar, D., Kim, Y. M., Borkar, N., Karpuzcu, U. R. & Kim, C. H., Dec 2016, In : IEEE Transactions on Very Large Scale Integration (VLSI) Systems. 24, 12, p. 3468-3476 9 p., 7468580.

Research output: Contribution to journalArticle

Voltage regulators
Electric potential
Scheduling algorithms
Electric power utilization
Throughput
7 Citations (Scopus)

VARIUS-TC: A modular architecture-level model of parametric variation for thin-channel switches

Khatamifard, S. K., Resch, M., Kim, N. S. & Karpuzcu, U., Nov 22 2016, Proceedings of the 34th IEEE International Conference on Computer Design, ICCD 2016. Institute of Electrical and Electronics Engineers Inc., p. 654-661 8 p. 7753353

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Switches
Hardware
Networks (circuits)
FinFET
2015
1 Citation (Scopus)

Comparison of single-ISA heterogeneous versus wide dynamic range processors for mobile applications

Ghasemi, H. R., Karpuzcu, U. & Kim, N. S., Dec 14 2015, Proceedings of the 33rd IEEE International Conference on Computer Design, ICCD 2015. Institute of Electrical and Electronics Engineers Inc., p. 304-310 7 p. 7357118

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Energy efficiency
Networks (circuits)
Electric potential
Mobile computing
Electric power utilization
4 Citations (Scopus)

Decoupled Control and Data Processing for Approximate Near-Threshold Voltage Computing

Akturk, I., Kim, N. S. & Karpuzcu, U., Jul 1 2015, In : IEEE Micro. 35, 4, p. 70-78 9 p., 7182247.

Research output: Contribution to journalArticle

Threshold voltage
Energy efficiency
Clocks
Throughput
Degradation
2014
9 Citations (Scopus)

Accordion: Toward soft Near-Threshold Voltage Computing

Karpuzcu, U., Akturk, I. & Kim, N. S., Jan 1 2014, 20th IEEE International Symposium on High Performance Computer Architecture, HPCA 2014. IEEE Computer Society, p. 72-83 12 p. 6835977. (Proceedings - International Symposium on High-Performance Computer Architecture).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Threshold voltage
Knobs
Fault tolerance
Energy efficiency
Hardware
16 Citations (Scopus)

Low-cost per-core voltage domain support for power-constrained high-performance processors

Sinkar, A. A., Ghasemi, H. R., Schulte, M. J., Karpuzcu, U. & Kim, N. S., Apr 2014, In : IEEE Transactions on Very Large Scale Integration (VLSI) Systems. 22, 4, p. 747-758 12 p., 6521392.

Research output: Contribution to journalArticle

Voltage regulators
Electric potential
Costs
Feedback control
2013
29 Citations (Scopus)

Coping with parametric variation at near-threshold voltages

Karpuzcu, U., Kim, N. S. & Torrellas, J., Sep 9 2013, In : IEEE Micro. 33, 4, p. 6-14 9 p., 6527886.

Research output: Contribution to journalArticle

Threshold voltage
Energy efficiency
44 Citations (Scopus)

EnergySmart: Toward energy-efficient manycores for Near-Threshold Computing

Karpuzcu, U. R., Sinkar, A., Kim, N. S. & Torrellas, J., Jul 23 2013, 19th IEEE International Symposium on High Performance Computer Architecture, HPCA 2013. p. 542-553 12 p. 6522348

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Threshold voltage
Electric potential
2012
59 Citations (Scopus)

VARIUS-NTV: A microarchitectural model to capture the increased sensitivity of manycores to process variations at near-threshold voltages

Karpuzcu, U. R., Kolluru, K. B., Kim, N. S. & Torrellas, J., Oct 1 2012, 2012 42nd Annual IEEE/IFIP International Conference on Dependable Systems and Networks, DSN 2012. 6263951. (Proceedings of the International Conference on Dependable Systems and Networks).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Threshold voltage
Static random access storage
Tile
Failure modes
Transistors
2010
2 Citations (Scopus)

LeadOut: Composing low-overhead frequency-enhancing techniques for single-thread performance in configurable multicores

Greskamp, B., Karpuzcu, U. R. & Torrellas, J., May 27 2010, HPCA-16 2010 - The 16th International Symposium on High-Performance Computer Architecture. 5416656

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electric potential
Controllers
Temperature
2009
80 Citations (Scopus)

Accurate microarchitecture-level fault modeling for studying hardware faults

Li, M. L., Ramachandran, P., Karpuzcu, U. R., Hari, S. K. S. & Adve, S. V., Apr 24 2009, Proceedings - 15th International Symposium on High-Performance Computer Architecture, HPCA - 15 2009. p. 105-116 12 p. 4798242. (Proceedings - International Symposium on High-Performance Computer Architecture).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hardware
Fault tolerance
Experiments
71 Citations (Scopus)

BlueShift: Designing processors for timing speculation from the ground up

Greskamp, B., Wan, L., Karpuzcu, U. R., Cook, J. J., Torrellas, J., Chen, D. & Zilles, C., Apr 24 2009, Proceedings - 15th International Symposium on High-Performance Computer Architecture, HPCA - 15 2009. p. 213-224 12 p. 4798256. (Proceedings - International Symposium on High-Performance Computer Architecture).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tuning
Clocks
Design optimization
Voltage scaling
44 Citations (Scopus)

The BubbleWrap many-core: Popping cores for sequential acceleration

Karpuzcu, U. R., Greskamp, B. & Torrellas, J., Dec 1 2009, In : Proceedings of the Annual International Symposium on Microarchitecture, MICRO. p. 447-458 12 p.

Research output: Contribution to journalConference article

Aging of materials
Throughput
Service life
Electric power utilization
Wear of materials