Tools and Crossbar-based nano/CMOS Architectures
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Ciprian Teodorov proposes a generic design framework for comparing crossbar-based nano/CMOS architectures. The framework is based on a common vocabulary and modeling approach that allows different architectures to be described using the same set of basic elements and interfaces. This would address the current lack of tools for analyzing nanoscale designs and allow designs to be compared based on common metrics like yield, area and delay. The goal is to establish a methodology for exploring crossbar-based architectures and hybrid fabrics using reusable modeling, simulation and analysis tools.
Tools and Crossbar-based nano/CMOS Architectures
- 1. Tools and Crossbar-based nano/CMOS Architectures Ciprian.Teodorov@univ-brest.fr March, 23rd 2010 5th International Conference on Design & Technology of Integrated Systems in Nanoscale Era PhD supervisors: Loïc Lagadec Catherine Dezan Bernard Pottier
- 2. C. Teodorov of 23 Generic design framework based on a common vocabulary the key to taming nanoscale architectures. Comparing Crossbar-based nano/CMOS Architectures 2
- 3. C. Teodorov of 23 Overview • Context • State of the art • Tools … lack of • Common vocabulary • Conclusions Comparing Crossbar-based nano/CMOS Architectures 3
- 4. C. Teodorov of 23 There is plenty of room at the bottom Comparing Crossbar-based nano/CMOS Architectures 4
- 5. C. Teodorov of 23 Comparing Crossbar-based nano/CMOS Architectures 5 QCA, Notre Dame NanoCell, J. M. Tour I. O’Connor Nanofabric, S.C. Golstein NanoPLA, A. DeHon CMOL, K. Likharev FPNI, HP, G.S. Snider Nasic, C.A. Moritz
- 6. C. Teodorov of 23 Lack of tools Comparing Crossbar-based nano/CMOS Architectures 6
- 7. C. Teodorov of 23 Can you guess the purpose of the schema? Comparing Crossbar-based nano/CMOS Architectures 7 Can a Biologist Fix a Radio? — or, What I Learned while Studying Apoptosist, Y. Lazebnik, Biochemistry (Moscow), Vol. 69, No. 12, 2004, pp. 1403 1406
- 8. C. Teodorov of 23 Common vocabulary Global flow Comparing Crossbar-based nano/CMOS Architectures 8 CircuitsCircuits ArchitectureArchitecture ToolsTools MetricsMetrics Defect/ Faults Defect/ Faults
- 9. C. Teodorov of 23 Related tools • VPR – Versatile Place and Route (V. Betz) – Abstract FPGA model – Common tools for placement, routing, visualisation • Madeo (L. Lagadec) – Virtuals FPGAs, Application model – Common tools for synthesis, placement, routing, visualisation, debug – Extensibility & Specialisation Comparing Crossbar-based nano/CMOS Architectures 9
- 10. C. Teodorov of 23 Comparing Crossbar-based nano/CMOS Architectures 10 Dynamic languages, evolution aware software Dynamic languages, evolution aware software
- 11. C. Teodorov of 23 Architecture Modelling Comparing Crossbar-based nano/CMOS Architectures 11 CircuitsCircuits Tool s Tool s MetricsMetrics Defect/ Faults Defect/ Faults ArchitectureArchitecture
- 12. C. Teodorov of 23 Idea Comparing Crossbar-based nano/CMOS Architectures 12 BrickBrick Nasic tile CMOL tile O’Connor matrix FPNI tile Nanocell cell Black box principle • Different internals • Similar external interface Brick (Nasic Tile) Brick (Nasic Tile) Brick (Connection Block) Brick (Connection Block) Brick (Nasic Tile) Brick (Nasic Tile) Brick (CMOS Tile) Brick (CMOS Tile) Hierarchical graph structure Connection block Nano/CMOS Interface Brick Interface
- 13. C. Teodorov of 23 NASIC tile (Umass, C.A. Moritz) Comparing Crossbar-based nano/CMOS Architectures 13
- 14. C. Teodorov of 23 Comparing Crossbar-based nano/CMOS Architectures 14
- 15. C. Teodorov of 23 NanoPLA tile (A. DeHon) Comparing Crossbar-based nano/CMOS Architectures 15
- 16. C. Teodorov of 23 CircuitsCircuits MetricsMetrics Defect/ Faults Defect/ Faults ArchitectureArchitecture ToolsTools Comparing Crossbar-based nano/CMOS Architectures 16
- 17. C. Teodorov of 23 Circuit layout automation • Different possible tools at different abstraction levels – Graph monomorphism – crossbar level – VPR-like place and route – architectural level for reconfigurable – ASIC-like algorithms – for asic-like fabric organisation Comparing Crossbar-based nano/CMOS Architectures 17
- 18. C. Teodorov of 23 CircuitsCircuits MetricsMetrics ArchitectureArchitecture ToolsTools Defect/ Faults Defect/ Faults Comparing Crossbar-based nano/CMOS Architectures 18
- 19. C. Teodorov of 23 Defect/fault tolerance • Fault modelling and simulation at different abstraction levels • Generic fault tolerance models: – Reconfiguration – N-Modular Redundancy • Architecture specific FT techniques Comparing Crossbar-based nano/CMOS Architectures 19
- 20. C. Teodorov of 23 CircuitsCircuits Defect/ Faults Defect/ Faults ArchitectureArchitecture ToolsTools MetricsMetrics Comparing Crossbar-based nano/CMOS Architectures 20
- 21. C. Teodorov of 23 Metrics and Design-Space Exploration • Common metrics: yield, area, delay. • Comparisons with other nanoscale fabrics, CMOS… • Explore interconnect topologies • Explore (even) hybrid fabrics??? – 50% NASIC, 30% CMOL, and 20% CMOS Comparing Crossbar-based nano/CMOS Architectures 21 NASICNASIC CMOLCMOL CMOSCMOS NASICNASICNASICNASIC NASICNASIC NASICNASIC CMOLCMOL CMOLCMOL CMOSCMOS
- 22. C. Teodorov of 23 Conclusions Comparing Crossbar-based nano/CMOS Architectures 22
- 23. C. Teodorov of 23 Questions? Comparing Crossbar-based nano/CMOS Architectures 23