研究生: |
凌運鋒 Joon-Fong Ling |
---|---|
論文名稱: |
圖形中心性問題於CPU/GPU 架構之研究 Computing of Graph Centrality Calculations on Heterogeneous CPU/GPU Systems |
指導教授: |
陳維美
Wei-Mei Chen |
口試委員: |
陳維美
Wei-Mei Chen 阮聖彰 Shanq-Jang Ruan 陳永耀 Yung-Yao Chen 吳晉賢 Chin-Hsien Wu |
學位類別: |
碩士 Master |
系所名稱: |
電資學院 - 電子工程系 Department of Electronic and Computer Engineering |
論文出版年: | 2023 |
畢業學年度: | 111 |
語文別: | 英文 |
論文頁數: | 50 |
中文關鍵詞: | 中心性 、平行計算 |
外文關鍵詞: | Centrality, Parallel Computing |
相關次數: | 點閱:234 下載:0 |
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這篇論文將著重在討論基於最短路徑(Shortest Path) 的方式來計算的中心性(Centrality),包含介數中心性(Betweenness Centrality,簡稱BC) 及緊密中心性(Closeness Centrality,簡稱CC)。這兩種中心性測量方式都是運用最短路徑的特性來計算及判斷所有點對整個圖(Graph) 的影響程度。在這篇論文當中,我們所提出的框架主要是以CPU/GPU 的結構,運用GPU(Graphics Processing Units) 多核及平行的架構幫助我們分散運算獨立的工作。一般在計算BC 和CC 的演算法會單純以不同的遍歷方式去做計算。我們除了在遍歷的方式上運用GPU 架構,也針對圖的結構去做調整。利用分支度(Degree) 為1 的點及關節點(Articulation Vertex) 作為切割圖點,讓原本的圖能夠分割成較小的子圖。這樣的子圖分別為獨立的子圖,因各子圖的獨立關係能夠很好運用平行計算的方式減少計算的時間,也可以減少各點遍歷的深度。
This thesis explores centrality measures based on shortest paths, specifically Betweenness Centrality (BC) and Closeness Centrality (CC). These metrics leverage shortest path information to evaluate the significance of each node within the graph. We propose a framework that utilizes a CPU/GPU architecture to achieve efficient computation. The GPU’s parallel computing capabilities enable effective task scheduling across all its cores.
Moreover, we introduce modifications to the graph structure by identifying degree-1 and
articulation vertices. This separation allows us to break the graph into smaller subgraphs with independent relationships. Leveraging GPU’s parallelism, we can perform computations in parallel, leading to reduced computation time and minimized vertex traversal depth compared to traditional BC and CC calculations.
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