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Parallel graph algorithms based upon broadcast communications

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3 Author(s)
Chang-Biau Yang ; Inst. of Comput. Sci., Nat. Tsing Hua Univ., Hsinchu, Taiwan ; Lee, R.C.T. ; Wen-Tsuen Chen

Some common guidelines that can be used to design parallel algorithms under the single-channel broadcast communication model are presented. Several graph problems are solved, including topological ordering, the connected component problem, breadth-first search, and depth-first search. If an ideal conflict resolution scheme is used, all of the algorithms require O(n) time by using n processors. Under such a situation, the algorithms are all optimal. If a realistic conflict resolution is used, the algorithms require O(n log n) time by using n/log n processors. For both cases, all of the algorithms achieve optimal speedups

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Computers, IEEE Transactions on  (Volume:39 ,  Issue: 12 )