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GAMT: A Fast and Scalable IP Lookup Engine for GPU-based Software Routers

GAMT: A Fast and Scalable IP Lookup Engine for GPU-based Software Routers. Author : Yanbiao Li, Dafang Zhang, Alex X. Liu and Jintao Zheng Publisher : ANCS 2013 Presenter: Yu Hao , Tseng Date: 2013/11/13. Outline. Introduction Background and Related Work

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GAMT: A Fast and Scalable IP Lookup Engine for GPU-based Software Routers

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  1. GAMT: A Fast and Scalable IP Lookup Engine forGPU-based Software Routers Author: YanbiaoLi, DafangZhang, Alex X. Liu and Jintao Zheng Publisher: ANCS 2013 Presenter: Yu Hao, Tseng Date: 2013/11/13

  2. Outline • Introduction • Background and Related Work • GPU-accelerated Multi-bit Trie • Performance Optimization • Experimental Evaluation

  3. Introduction • The GPU is becoming an emerging platform for high performance general-purpose computing. • J. Zhao et al. [27] - GPU-Accelerated Lookup Engine (GALE) • only applicable for IPv4 • decline sharply with the increase of update frequency • GPU-Accelerated Multi-bit Trie (GAMT) • Scale to IPv6 smoothly • Keep stable lookup throughput under highly frequent updates • Improve lookup performance with latency controlled

  4. Background and Related Work • Multi-bit Trie

  5. Background and Related Work (Cont.) • CUDA Programming Model • Coalescence of Global Memory Accesses • Overlapping Behaviors on the GPU • GPU-Accelerated IP Lookup Engine

  6. GPU-accelerated Multi-bit Trie • Encoding Rules and Lookup Approach

  7. GPU-accelerated Multi-bit Trie (Cont.) • Encoding Rules and Lookup Approach • Ex : 10001* • Step 1. Default (inf, jump) = (0, 1) • Step 2. (inf, jump) = (0 + 1, 1) = (1, 1) => (inf, jump) = (0, 2) • Step 3. (inf, jump) = (0 + 0, 2) = (0, 2) => (inf, jump) = (0, 3) • Step 4. (inf, jump) = (0 + 1, 3) = (1, 3) => (inf, jump) = (5, 0)

  8. GPU-accelerated Multi-bit Trie (Cont.) • Encoding Rules and Lookup Approach

  9. GPU-accelerated Multi-bit Trie (Cont.) • Update Mechanism

  10. GPU-accelerated Multi-bit Trie (Cont.) • Update Mechanism

  11. GPU-accelerated Multi-bit Trie (Cont.) • Architecture Overview

  12. Performance Optimization • Possibility of being Faster than GALE

  13. Performance Optimization (Cont.) • Optimized Multi-bit Trie

  14. Performance Optimization (Cont.) • Optimized Multi-bit Trie

  15. Performance Optimization (Cont.) • Delete in Lazy Mode • Multi-Stream Pipeline

  16. Experimental Evaluation • Evaluation Methodology

  17. Experimental Evaluation (Cont.) • Evaluation Methodology

  18. Experimental Evaluation (Cont.) • Lookup Performance

  19. Experimental Evaluation (Cont.) • Lookup Performance

  20. Experimental Evaluation (Cont.) • Lookup Performance

  21. Experimental Evaluation (Cont.) • Update Overhead

  22. Experimental Evaluation (Cont.) • Comprehensive Performance

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