Publications de Odysseas Zografos

Multiplier Architectures: Challenges and Opportunities with Plasmonic-based Logic

Giovanni De Micheli, Odysseas Zografos, Eleonora Testa, Mathias Soeken

Emerging technologies such as plasmonics and photonics are promising alternatives to CMOS for high throughput applications, thanks to their waveguide's low power consumption and high speed of computation. Besides these qualities, these novel technologies a ...

2020

Majority Logic Synthesis

Giovanni De Micheli, Luca Gaetano Amarù, Odysseas Zografos, Eleonora Testa, Mathias Soeken

The majority function (xyz) evaluates to true, if at least two of its Boolean inputs evaluate to true. The majority function has frequently been studied as a central primitive in logic synthesis applications for many decades. Knuth refers to the majority f ...

ASSOC COMPUTING MACHINERY2018

Inverter Propagation and Fan-Out Constraints for Beyond-CMOS Majority-Based Technologies

Giovanni De Micheli, Odysseas Zografos, Eleonora Testa, Mathias Soeken

Traditional logic synthesis faces challenges of meeting the requirements demanded by the many emerging nanotech-nologies that are based on logic models different from standard CMOS. Several emerging nanodevices including Quantum-dot Cellular Automata (QCA) ...

IEEE2017

Exact Synthesis for Logic Synthesis Applications with Complex Constraints

Giovanni De Micheli, Odysseas Zografos, Eleonora Testa, Mathias Soeken

Exact synthesis is the problem of finding logic networks that represent given Boolean functions and respect given constraints. With exact synthesis it is possible to find optimum networks, e.g., in size or depth; consequently, it primarily finds applicatio ...

2017

Wave Pipelining for Majority-based Beyond-CMOS Technologies

Giovanni De Micheli, Luca Gaetano Amarù, Odysseas Zografos, Pierre-Emmanuel Julien Marc Gaillardon, Eleonora Testa, Mathias Soeken

The performance of some emerging nanotechnolo- gies benefits from wave pipelining. The design of such circuits re- quires new models and algorithms. Thus we show how Majority- Inverter Graphs (MIG) can be used for this purpose and we extend the related opt ...

2017

Inversion optimization in majority-inverter graphs

Giovanni De Micheli, Luca Gaetano Amarù, Odysseas Zografos, Pierre-Emmanuel Julien Marc Gaillardon, Eleonora Testa, Mathias Soeken

Many emerging nanotechnologies realize majority gates as primitive building blocks and they benefit from a majority-based synthesis. Recently, Majority-Inverter Graphs (MIGs) have been introduced to abstract these new technologies. We present optimi ...

Ieee2016

Spintronic Majority Gates

Giovanni De Micheli, Luca Gaetano Amarù, Odysseas Zografos, Pierre-Emmanuel Julien Marc Gaillardon

In this paper we present an overview of two types of majority gate devices based on spintronic phenomena. We compare the spin torque majority gate and the spin wave majority gate and describe work on these devices. We discuss operating conditions for the t ...

2015

Majority Logic Synthesis for Spin Wave Technology

Giovanni De Micheli, Luca Gaetano Amarù, Odysseas Zografos, Pierre-Emmanuel Julien Marc Gaillardon

Spin Wave Devices (SWDs) are promising beyond-CMOS candidates. Unlike traditional charge-based technologies, SWDs use spin as information carrier that propagates in waves. In this scenario, the logic primitive for computation is the majority gate. T ...

2014