Elevator-First: A Deadlock-Free Distributed Routing Algorithm for Vertically Partially Connected 3D-NoCs

In this paper, we propose a distributed routing algorithm for vertically partially connected regular 2D topologies of different shapes and sizes (e.g., 2D mesh, torus, ring). The topologies that are the target of this algorithm are of practical interest in the 3D integration of heterogeneous dies us...

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Veröffentlicht in:IEEE transactions on computers Jg. 62; H. 3; S. 609 - 615
Hauptverfasser: Dubois, F., Sheibanyrad, A., Pétrot, F., Bahmani, M.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York IEEE 01.03.2013
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Institute of Electrical and Electronics Engineers
Schlagworte:
Algorithms
Blockage
deadlock freedom
Dies
Elevators
Engineering Sciences
Integrated circuit interconnections
Keywords-3D Integration
Mathematical analysis
Mathematical models
Micro and nanotechnologies
Microelectronics
Network topology
network-on-chip (NoC)
Routing
routing algorithm
Studies
System recovery
Three dimensional
Three dimensional displays
Topology
Two dimensional
NOCS
ISSN:0018-9340, 1557-9956
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Zusammenfassung:In this paper, we propose a distributed routing algorithm for vertically partially connected regular 2D topologies of different shapes and sizes (e.g., 2D mesh, torus, ring). The topologies that are the target of this algorithm are of practical interest in the 3D integration of heterogeneous dies using Through-Silicon-Vias (TSVs). Indeed, TSV-based 3D integration allows to envision the stacking of dies with different functions and technologies, using as an interconnect backbone a 3D-NoC. Intrinsically, 3D topologies have better performances, but yield and active area (and thus the cost) are function of the number of TSVs; therefore, the designs tend to use only a subset of available TSVs between two dies. The definition of blockage free and low implementation cost distributed deterministic routing on this kind of topology is thus of theoretical and practical interests. We formally prove that independently of the shape and dimensions of the planar topologies and of the number and placement of the TSVs, the proposed routing algorithm using two virtual channels in the plane is deadlock and livelock free. We also experimentally show that the performance of this algorithm is still acceptable when the number of vertical connections decreases.
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ISSN:0018-9340
1557-9956
DOI:10.1109/TC.2011.239