Design of High Performance Pattern Matching Engine Through Compact Deterministic Finite Automata Department of Computer Science and Information Engineering National Cheng Kung University, Taiwan R.O.C. Authors: Piyachon, P. Yan Luo Publisher: DAC th ACM, June 8-13, 2008, Anaheim, California, USA. Present: Chia-Ming,Chuang Date: 11, 26,

Outline 1. Introduction 2. Proposed schemes 3. Architecture 4. Experiments 5. Conclusion 2

Introduction (1/5) 3

Introduction (2/5) 4 bit DFA 3bit DFA 2bit DFA 1bit DFA 0 h i s e r m a n l d y

5 Introduction (3/5)

Introduction (4/5) 6 Implementation Issues: The bit-DFA method requires thousands of processing elements to implement thousands of bit-DFA, which is not practical under today’s silicontechnology. Memory Wastage: Since introduced in 2005, the bit-DFA method has not been put into its limitation to give optimal memory efficiency.

Introduction (5/5) 7

Outline 1. Introduction 2. Proposed schemes 3. Architecture 4. Experiments 5. Conclusion 7

Proposed schemes (1/7) 8

Proposed schemes (2/7) 9 ( 一 ) We design two schemes to determine the matched patterns: LTT for common output states, and CLT for unique ones. ( 一 ) the state ξ3,0 is a common output state and, π0,0∩π1,0∩π2,0∩π3,0 = {p0}.

Proposed schemes (3/7) 10

Proposed schemes (4/7) 11

Proposed schemes (5/7) 12

Proposed schemes (6/7) 13

Proposed schemes (7/7) 14

Outline 1. Introduction 2. Proposed schemes 3. Architecture 4. Experiments 5. Conclusion 15

Architecture (1/3) 16

Architecture (2/3) 17

Architecture (3/3) 18

Outline 1. Introduction 2. Proposed schemes 3. Architecture 4. Experiments 5. Conclusion 19

Experiments (1/1) 20

Outline 1. Introduction 2. Proposed schemes 3. Architecture 4. Experiments 5. Conclusion 21

Conclusion (1/1) ( ㄧ ) We proposed using Label Translation Table and CAM-based Lookup Table methods to tackle the problems. The proposed schemes reduces the usage by up to 85% ( 二 ) We present the architecture that realizes our proposed methods. The architecture suits for both ASIC and FPGA implementation as well as multi-core system 22