Match and replace a functional eco engine for multi error circuit rectification
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Match and Replace — A Functional ECO Engine for Multi-Error Circuit Rectification. Shao- Lun Huangy , Wei- Hsun Linz, Chung-Yang ( Ric ) Huangyz. ICCAD’11. outline. INTRODUCTION AN ILLUSTRATIVE EXAMPLE THE MATCHING PHASE THE REPLACEMENT PHASE MATCH-AND-REPLACE ECO ENGINE

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Match and Replace — A Functional ECO Engine for Multi-Error Circuit Rectification

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Match and Replace — A Functional ECO Engine forMulti-Error Circuit Rectification

Shao-LunHuangy, Wei-Hsun Linz, Chung-Yang (Ric) Huangyz

ICCAD’11


outline

  • INTRODUCTION

  • AN ILLUSTRATIVE EXAMPLE

  • THE MATCHING PHASE

  • THE REPLACEMENT PHASE

  • MATCH-AND-REPLACE ECO ENGINE

  • EXPERIMENTAL RESULTS

  • CONCLUSION


INTRODUCTION

  • Functional ECO has been an indispensible technique in modern VLSI design flow.

  • An engineering change order (ECO) approach that aims at rectifying the design problems after synthesis and optimization.


INTRODUCTION


AN ILLUSTRATIVE EXAMPLE


AN ILLUSTRATIVE EXAMPLE


THE MATCHING PHASE

  • rectification pairs :

    • A group of pairs are rectification pairs if and only if replacing all no in these pairs with their ng makes the original and the golden circuits turn into functionally equivalent.


THE MATCHING PHASE

  • Cut function :

    • A Cut function in a circuit Cir,representedas CFCir(CUT), is a modified output function of Cir which its input signal are moved from the PIs of Cir to the cut CUT.


THE MATCHING PHASE


THE MATCHING PHASE


THE MATCHING PHASE

  • Cut Matching Algorithm

    • extend the SAT-based Boolean matching algorithm in [10]


THE MATCHING PHASE


THE REPLACEMENT PHASE

Rectification Pair Selection


THE REPLACEMENT PHASE


THE REPLACEMENT PHASE

  • Patch Minimization


MATCH-AND-REPLACE ECO ENGINE


EXPERIMENTAL RESULTS

  • ISCAS’89 benchmarks

  • MiniSAT [19] as our SAT engine

  • Linux workstation with 32GB RAM and 2.5GHz Intel Xeon CPU


EXPERIMENTAL RESULTS


EXPERIMENTAL RESULTS


EXPERIMENTAL RESULTS


CONCLUSION

  • A matching-based functional ECO engine

  • The rectification pair matching algorithm efficiently identifies functional relations

  • patch minimization effectively optimizes the patch sizes


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