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研究生:葉國暉
研究生(外文):Kuo-Hui Yeh
論文名稱:二維環形曲面網路中的蟲洞路徑式容錯廣播演算法
論文名稱(外文):Fault-Tolerant Broadcasting Algorithm for Wormhole-Routed 2D Torus Networks
指導教授:羅乃維羅乃維引用關係
指導教授(外文):Nai-Wei Lo
學位類別:碩士
校院名稱:國立臺灣科技大學
系所名稱:資訊管理系
學門:電算機學門
學類:電算機一般學類
論文種類:學術論文
論文出版年:2005
畢業學年度:93
語文別:英文
論文頁數:77
中文關鍵詞:容錯廣播演算法環形曲面網路蟲洞路徑
外文關鍵詞:fault-tolerant broadcasting algorithmtoruswormhole routing
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本研究係建議一套在二維環形曲面中可容許隨機錯誤的廣播演算法並提供該演算法的時間複雜度分析。吾人利用環形曲面的對稱特性與錯誤節點叢集模型以設計本演算法。本演算法主要分成兩部分:錯誤區塊外與錯誤區塊內的訊息傳輸。在錯誤區塊外,先將訊息傳輸到部分特定節點(稱為Diagonal Dominating Nodes;DDNs)。這些節點再將訊息傳送到對角線上全部沒有錯誤發生的節點。最後,研究再利用自行設計的傳輸樣式來傳輸訊息。在錯誤區塊內,根據研究分析結果,可推論在錯誤區塊中找到一個最有效率的訊息廣播傳輸路徑是屬於NP-hard問題。鑑於此,本研究提出一個啟發式的演算法以解決錯誤區塊的訊息傳輸問題。
In this thesis, we develop a fault-tolerant broadcasting algorithm on 2D torus network with arbitrary faults and investigate the algorithm’s upper bound in terms of the total time steps. In our approach, we achieve fault tolerance by taking the advantages of topological properties of 2D torus. Besides, the fault block model is used based on which all faulty nodes in a network are confined in a set of disjoint blocks. The broadcast process is carried out in two phases: outside fault block region and inside fault block region. In the outside fault block region phase, the broadcast message is sent from a given source node to some specific nodes, called Diagonal Dominating Nodes (DDNs). Then, DDNs send the broadcast message to all non-faulty nodes on the diagonal line. Finally, specific message transfer patterns are applied. Furthermore, for the inside fault block region phase we develop a heuristic broadcasting algorithm because to resolve the NP-hard inside-fault-block broadcasting problem.
Contents
中文摘要 .................................................... I
Abstract ................................................... II
誌謝 ........................................................ III
Content .................................................... IV
List of Figures ............................................ V
List of Tables ............................................. VI
Chapter 1 Introduction .................................... 1
1.1 Background and Motivation ............................ 1
1.2 Outline of the Thesis ............................ 3
Chapter 2 Preliminaries .................................... 4
2.1 Mesh/Torus Topology Properties .................... 4
2.2 Routing/Broadcasting ............................ 7
2.2.1 Wormhole Routing vs. Store-and-Forward ............ 9
2.3 Computation Component Model ............................ 13
2.4 Fault Tolerance .................................... 14
Chapter 3 Related Work .................................... 16
Chapter 4 Problem Formulation ............................ 19
Chapter 5 Fault-tolerant Broadcasting Algorithms .... 22
5.1 Near optimal Broadcasting Algorithms in 2D Torus .... 25
5.2 Fault-tolerant Broadcasting Algorithm in 2D Torus up to 6 Faults .................................................... 33
5.3 Fault-Tolerant Broadcasting Algorithm in 2D Torus with Arbitrary Faults .................................................... 50
Chapter 6 Conclusion .................................... 72
Bibliography ............................................ 74
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