Design and comparison of NML systolic architectures

Crocker,; Hu, Xiaobo Sharon; Niemier,

doi:10.1109/nanoarch.2010.5510929

Cited by 20 publications

(7 citation statements)

References 14 publications

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“…For example, systolic architectures can take advantage of the inherent pipelining associated with NML clocking. In this vein, we have begun to investigate compute-bound applications that map to systolic architectures [Crocker et al 2010]. Initial performance estimates indicate that NML has the potential to outperform low-power CMOS in terms of energy and energy delay product for high-throughput applications.…”

Section: Discussion and Future Workmentioning

confidence: 99%

A Reconfigurable PLA Architecture for Nanomagnet Logic

Crocker

Niemier

2012

J. Emerg. Technol. Comput. Syst.

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In order to continue the performance and scaling trends that we have come to expect from Moore's Law, many emergent computational models, devices, and technologies are actively being studied to either replace or augment CMOS technology. Nanomagnet Logic (NML) is one such alternative. NML operates at room temperature, it has the potential for low power consumption, and it is CMOS compatible. In this aricle, we present an NML programmable logic array (PLA) based on a previously proposed reprogrammable quantumdot cellular automata PLA design. We also discuss the fabrication and simulation validation of the circuit structures unique to the NML PLA, present area, energy, and delay estimates for the NML PLA, compare the area of NML PLAs to other reprogrammable nanotechnologies, and analyze how architectural-level redundancy will affect performance and defect tolerance in NML PLAs. We will use results from this study to shape a concluding discussion about, which architectures appear to be most suitable for NML. ACM Reference Format:Crocker, M., Niemier, M., Hu, X. S. 2012. A reconfigurable PLA architecture for nanomagnet logic. ACM J.

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Section: Discussion and Future Workmentioning

confidence: 99%

A Reconfigurable PLA Architecture for Nanomagnet Logic

Crocker

Niemier

2012

J. Emerg. Technol. Comput. Syst.

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“…Wires are placed over and under the plane so that can be twisted allowing signals propagation in every direction. This is one of three techniques available to build loops in NML, the other solution is to use a 2-phase clock as proposed in [35] or magneto-electric interfaces to translate the magnetic signal into an electric one. For detailed explanations and results refer to [34] [7].…”

Section: Nml Background and Circuits Organizationmentioning

confidence: 99%

Feedbacks in QCA: A Quantitative Approach

Vacca

Wang

Graziano

et al. 2015

IEEE Trans. VLSI Syst.

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In the post-CMOS scenario a primary role is played by Quantum dot Cellular Automata (QCA) technology. Irrespective of the specific implementation principle (e.g. either molecular, magnetic or semi-conductive in current scenario) the intrinsic deep-level pipelined behavior is the dominant issue. It has important consequences on circuit design and performance especially in presence of feedbacks in sequential circuits. Though partially already addressed in literature, these consequences still must be fully understood and solutions thoroughly approached in order to allow this technology any further advancement. This work conducts an exhaustive analysis of the effects and the consequences derived by the presence of loops in QCA circuits. For each problem arisen a solution is presented. The analysis is performed using as test architecture a complex systolic array circuit for biosequences analysis (Smith-Waterman algorithm) which represents one of the most promising application for QCA technology. The circuit is based on NanoMagnetic Logic as QCA implementation, is designed down to the layout level considering technological constraints and experimentally validated structures, counts up to approximately 2.3Ml nanomagnets, is described and simulated with HDL language using as a testbench realistic protein alignment sequences. The results here presented constitute a fundamental advancement in the emerging technologies field, since, 1) they are based on a quantitative approach relying on a realistic and complex circuit involving a large variety of QCA blocks, 2) they strictly are reckoned starting from current technological limits without relying on unrealistic assumptions, 3) they provide general rules to design complex sequential circuits with intrinsically pipelined technologies, like QCA, 4) they prove with a real application benchmark how to maximize the circuits performance.

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“…In particular, in QCA several circuits have been designed and simulated; as an example, in [51] and [52] SAs for matrix multiplication and Galois field multiplication have been proposed. Also, NML implementations for convolution filters have been proposed in [53]. While SAs help to solve the interconnection problem of this technology, they still suffer from a loss of performance in presence of loops.…”

Section: Systolic Arraysmentioning

confidence: 99%

NanoMagnet Logic: An Architectural Level Overview

Vacca

Graziano

Wang

et al. 2014

Field-Coupled Nanocomputing

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In recent years Field-Coupled devices, like Quantum dot Cellular Automata, are gaining an ever increasing attention from the scientific community. The computational paradigm beyond this device topology is based on the interaction among neighbor cells to propagate information through circuits. Among the various implementations of this theoretical principle, NanoMagnet Logic (NML) is one the most studied, due to some interesting features, like the possibility to combine memory and logic in the same device and the possible low power consumption. Since the working principle of Field-Coupled devices is completely different from CMOS technology, it is important to understand all the implications that this new computational paradigm has on complex circuit architectures. In this chapter we deeply analyze the major issues encountered in the design of complex circuits using Field-Coupled devices. Problems are analyzed and techniques to solve them and to improve performance are presented. Finally, a realistic analysis of the applications best suited for this technology is presented. While the analysis is performed using Nano-Magnet Logic as target, the results can be applied to all Field-Coupled devices. This chapter therefore supplies researchers and designers with the essential guidelines necessary to design complex circuits using Nano-Magnet Logic and, more in general, Field-Coupled devices.

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Design and comparison of NML systolic architectures

Cited by 20 publications

References 14 publications

A Reconfigurable PLA Architecture for Nanomagnet Logic

A Reconfigurable PLA Architecture for Nanomagnet Logic

Feedbacks in QCA: A Quantitative Approach

NanoMagnet Logic: An Architectural Level Overview

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