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Title: Scalable parallel minimum spanning forest computation
Authors: Nobari, S.
Cao, T.-T.
Karras, P.
Bressan, S. 
Keywords: GPU
Minimum spanning forest
Parallel graph algorithms
Issue Date: 2012
Citation: Nobari, S.,Cao, T.-T.,Karras, P.,Bressan, S. (2012). Scalable parallel minimum spanning forest computation. Proceedings of the ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming, PPOPP : 205-214. ScholarBank@NUS Repository.
Abstract: The proliferation of data in graph form calls for the development of scalable graph algorithms that exploit parallel processing environments. One such problem is the computation of a graph's minimum spanning forest (MSF). Past research has proposed several parallel algorithms for this problem, yet none of them scales to large, high-density graphs. In this paper we propose a novel, scalable, parallel MSF algorithm for undirected weighted graphs. Our algorithm leverages Prim's algorithm in a parallel fashion, concurrently expanding several subsets of the computed MSF. Our effort focuses on minimizing the communication among different processors without constraining the local growth of a processor's computed subtree. In effect, we achieve a scalability that previous approaches lacked. We implement our algorithm in CUDA, running on a GPU and study its performance using real and synthetic, sparse as well as dense, structured and unstructured graph data. Our experimental study demonstrates that our algorithm outperforms the previous state-of-the-art GPU-based MSF algorithm, while being several order of magnitude faster than sequential CPU-based algorithms. Copyright © 2012 ACM.
Source Title: Proceedings of the ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming, PPOPP
ISBN: 9781450311601
DOI: 10.1145/2145816.2145842
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