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Your search keyword '"Niemier, Michael T."' showing total 43 results
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43 results on '"Niemier, Michael T."'

1. Accelerating Finite-Field and Torus Fully Homomorphic Encryption via Compute-Enabled (S)RAM

Author

Takeshita, Jonathan, Reis, Dayane, Gong, Ting, Niemier, Michael T., Hu, Xiaobo Sharon, and Jung, Taeho

Abstract

Fully Homomorphic Encryption (FHE) allows outsourced computation on clients’ encrypted data while preserving data privacy. FHE's high computational intensity incurs high overhead from data transfer with hardware such as CPU, GPU, and FPGA, due to the inherent separation between computing and data. To overcome this limitation, Compute-Enabled RAM (CE-RAM) has been explored; however, prior work using CE-RAM to accelerate FHE only explores a simple implementation of a finite-field FHE scheme and did not explore algorithmic optimizations. In this paper, we investigate CE-RAM acceleration FHE more deeply, implementing both the finite-field B/FV and torus-based TFHE cryptosystems in CE-RAM with common FHE optimizations. This is the first work to explore using CE-RAM to accelerate TFHE. For B/FV, we explore parameter-specific algorithmic optimizations specifically designed for CE-RAM friendliness. We evaluate our implementation as compared to prior work in CE-RAM FHE acceleration and other hardware acceleration strategies. We demonstrate speedups of up to 784x for B/FV homomorphic multiplication and 38x for TFHE bootstrapping as compared to CPU implementations. We also discuss the overhead of CE-RAM for FHE on energy and area consumption, showing comparable or improved performance as compared to other work or hypothetical near-memory accelerators.

Published
2024
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2. Nanomagnet Logic (NML)

Author

Porod, Wolfgang, Bernstein, Gary H., Csaba, György, Hu, Sharon X., Nahas, Joseph, Niemier, Michael T., Orlov, Alexei, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Kobsa, Alfred, Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Anderson, Neal G., editor, and Bhanja, Sanjukta, editor

Published
2014
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3. Approximating the Maximum Sharing Problem

Author

Chaudhary, Amitabh, Chen, Danny Z., Fleischer, Rudolf, Hu, Xiaobo S., Li, Jian, Niemier, Michael T., Xie, Zhiyi, Zhu, Hong, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Dehne, Frank, editor, Sack, Jörg-Rüdiger, editor, and Zeh, Norbert, editor

Published
2007
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6. Nanomagnet Logic (NML)

Author

Porod, Wolfgang, primary, Bernstein, Gary H., additional, Csaba, György, additional, Hu, Sharon X., additional, Nahas, Joseph, additional, Niemier, Michael T., additional, and Orlov, Alexei, additional

Published
2014
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7. Fabricatable interconnect and molecular QCA circuits

Author

Chaudhary, Amitabh, Chen, Danny Ziyi, Xiaobo Sharon Hu, Niemier, Michael T., Ravichandran, Ramprasad, and Whitton, Kevin

Subjects
Circuit designer, Integrated circuit design, Circuit design -- Research, Molecular electronics -- Research, Quantum theory -- Research
Published
2007

12. Error analysis for ultra dense nanomagnet logic circuits.

Author

Shah, Faisal A., Csaba, Gyorgy, Niemier, Michael T., Hu, Xiaobo S., Wolfgang Porod, and Bernstein, Gary H.

Subjects
LOGIC circuits, DIGITAL electronics, ELECTRONIC circuits, DIPOLE moments, MAGNETS
Abstract

Dependency of errors in nanomagnet logic datalines on the dipole coupling strength is investigated. Evolution of different types of errors at different coupling strengths is studied. Dipole coupling strength in datalines is varied by changing the inter-magnet spacing from 30nm to 10 nm and the aspect ratios of the 20-nm-thick Supermalloy (Ni79Fe16Mo5) dots from 90×60 nm² to 120×60nm². An error rate improvement up to 46% is observed for inter-magnet space reduction from 30 nm to 10nm. Error rates in datalines with larger spacing are dominated by premature switching, whereas a new type of error, due to the stronger influence of the driver magnets, dominates in datalines with tighter (sub-20-nm) spacing. For same spacing, datalines with lower aspect ratio magnets show higher error rates compared to those with higher aspect ratio. [ABSTRACT FROM AUTHOR]

Published
2015
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16. Molecular cellular networks: A non von Neumann architecture for molecular electronics

Author

Lent, Craig S., primary, Henderson, Kenneth W., additional, Kandel, S. Alex, additional, Corcelli, Steven A., additional, Snider, Gregory L., additional, Orlov, Alexei O., additional, Kogge, Peter M., additional, Niemier, Michael T., additional, Brown, Ryan C., additional, Christie, John A., additional, Wasio, Natalie A., additional, Quardokus, Rebecca C., additional, Forrest, Ryan P., additional, Peterson, Jacob P., additional, Silski, Angela, additional, Turner, David A., additional, Blair, Enrique P., additional, and Lu, Yuhui, additional

Published
2016
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17. Nanomagnet Logic

Author

Csaba, Gyoörgy, primary, Bernstein, Gary H., additional, Porod, Wolfgang, additional, Orlov, Alexei, additional, Niemier, Michael T., additional, Hu, X. Sharon, additional, Becherer, Markus, additional, Breitkreutz, Stephan, additional, Kiermaier, Josef, additional, Eichwald, Irina, additional, Schmitt-Landsiedel, Doris, additional, Ju, Xueming, additional, and Lugli, Paolo, additional

Published
2015
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20. Approximating the Maximum Sharing Problem

Author

Chaudhary, Amitabh, primary, Chen, Danny Z., additional, Fleischer, Rudolf, additional, Hu, Xiaobo S., additional, Li, Jian, additional, Niemier, Michael T., additional, Xie, Zhiyi, additional, and Zhu, Hong, additional

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21. Threshold Gate-Based Circuits From Nanomagnetic Logic

Author

Papp, Adam, primary, Niemier, Michael T., additional, Csurgay, Arpad, additional, Becherer, Markus, additional, Breitkreutz, Stephan, additional, Kiermaier, Josef, additional, Eichwald, Irina, additional, Hu, X. Sharon, additional, Ju, Xueming, additional, Porod, Wolfgang, additional, and Csaba, Gyorgy, additional

Published
2014
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35. Minimum-Energy State Guided Physical Design for Nanomagnet Logic.

Author

Shiliang Liu, Csaba, Gyorgy, Xiaobo Sharon Hu, Varga, Edit, Niemier, Michael T., Bernstein, Gary H., and Porod, Wolfgang

Subjects
ENERGY levels (Quantum mechanics), NANOMAGNETICS, DIPOLE-dipole interactions, RADIATION hardening (Electronics), MAGNETIC dipoles
Abstract

Nanomagnet Logic (NML) accomplishes computation through magnetic dipole-dipole interactions. It has the potential for low-power dissipation, radiation hardness and non-volatility. NML circuits have been designed to process and move in- formation via nearest neighbor, device-to-device coupling. However, the resultant layouts often fail to function correctly. This paper reveals an important cause of such failures showing that a robust NML layout must take into account not only nearest neighbor, but also the next nearest neighbor couplings. A new design method is then introduced to address this issue that leverages the minimum-energy states of an NML circuit to guide the layout process. Case studies show that the new method is efficient and effective in arriving at correct NML layouts. [ABSTRACT FROM AUTHOR]

Published
2013

42. Shape Engineering for Controlled Switching With Nanomagnet Logic.

Author

Niemier, Michael T., Varga, Edit, Bernstein, Gary H., Porod, Wolfgang, Alam, Mohmmad Tanvir, Dingler, Aaron, Orlov, Alexei, and Hu, Xiaobo Sharon

Abstract

We demonstrate that in circuits and systems that comprised of nanoscale magnets, magnet-shape-dependent switching properties can be used to perform Boolean logic. More specifically, by making magnets with slanted edges, we can shift the energy barrier of the device (i.e., so that it is not at a maximum when a device is magnetized along its geometrically hard axis). In clocked systems, we can leverage this barrier shift to make and or or gates that are not majority based. Advantages include reduced gate footprint and interconnect overhead as we eliminate one gate input. In this paper, we report and discuss micromagnetic simulations that illustrate how magnet shape can facilitate nonmajority-gate-based, reduced footprint logic; preliminary fabrication and testing results that illustrate that shape engineering can induce energy barrier shifts; and additional micromagnetic simulations that show other ways in which we might leverage shape in circuits made from nanoscale magnets. [ABSTRACT FROM PUBLISHER]

Published
2012
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43. Magnetic–Electrical Interface for Nanomagnet Logic.

Author

Liu, Shiliang, Hu, Xiaobo Sharon, Nahas, Joseph J., Niemier, Michael T., Porod, Wolfgang, and Bernstein, Gary H.

Abstract

We present simulations of, and design alternatives for, an interface between nanomagnet logic (NML) and electrical circuitry. We propose using the fringing fields from a nanomagnet to help set the state of the free layer of a magnetic tunnel junction (MTJ). Our first magnetic–electrical interface design (MEI-1) assumes an MTJ stack layout, commonly seen in commercial magnetoresistive random access memory (MRAM). Our second design (MEI-2) is also based on a traditional MRAM process flow, but layers of the MTJ are deposited in reverse order. In MEI-2, the NML devices have the same thickness as the MTJ free layer. Simulations for MEI-2 suggest that the layer thickness and size are important design parameters, when considering realistic implementations of this MEI. By comparison, MEI-2 is applicable for the present process technology, while MEI-1 would be more easily fabricated with further technology development. [ABSTRACT FROM PUBLISHER]

Published
2011
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