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Logic programming approaches for routing fault-free and maximally parallel wavelength-routed optical networks-on-chip (Application paper)

Published online by Cambridge University Press:  23 August 2017

MARCO GAVANELLI ,
MADDALENA NONATO ,
ANDREA PEANO  and
DAVIDE BERTOZZI
MARCO GAVANELLI
Affiliation:
Department of Engineering, Ferrara University, Ferrara, Italy (e-mails: marco.gavanelli@unife.it, maddalena.nonato@unife.it)
MADDALENA NONATO
Affiliation:
Department of Engineering, Ferrara University, Ferrara, Italy (e-mails: marco.gavanelli@unife.it, maddalena.nonato@unife.it)
ANDREA PEANO
Affiliation:
QuanTek, Bologna, Italy (e-mail: andrea.peano@quantek.it)
DAVIDE BERTOZZI
Affiliation:
Department of Engineering, Ferrara University, Ferrara, Italy (e-mail: davide.bertozzi@unife.it)
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Abstract

One promising trend in digital system integration consists of boosting on-chip communication performance by means of silicon photonics, thus materializing the so-called Optical Networks-on-Chip. Among them, wavelength routing can be used to route a signal to destination by univocally associating a routing path to the wavelength of the optical carrier. Such wavelengths should be chosen so to minimize interferences among optical channels and to avoid routing faults. As a result, physical parameter selection of such networks requires the solution of complex constrained optimization problems. In previous work, published in the proceedings of the International Conference on Computer-Aided Design, we proposed and solved the problem of computing the maximum parallelism obtainable in the communication between any two endpoints while avoiding misrouting of optical signals. The underlying technology, only quickly mentioned in that paper, is Answer Set Programming. In this work, we detail the Answer Set Programming approach we used to solve such problem.

Another important design issue is to select the wavelengths of optical carriers such that they are spread across the available spectrum, in order to reduce the likelihood that, due to imperfections in the manufacturing process, unintended routing faults arise. We show how to address such problem in Constraint Logic Programming on Finite Domains.

Keywords

Answer set programmingLogic programming applicationsOptical networks-on-chipConstrained optimizationConstraint logic programming on finite domains
Type
Regular Papers
Information
Theory and Practice of Logic Programming , Volume 17 , Special Issue 5-6: 33rd International Conference on Logic Programming , September 2017 , pp. 800 - 818
Copyright
Copyright © Cambridge University Press 2017 

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