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Efficient parallel algorithms for (5+1)-coloring and maximal independent set problems

Technical Report ·
OSTI ID:6487978

An efficient technique for breaking symmetry in parallel is described. The technique works especially well on rooted trees and on graphs with a small maximum degree. In particular, a maximal independent set can be found on a constant-degree graph in O(lg*n) time on an EREW PRAM using a linear number of processors. It is shown how to apply this technique to construct more efficient parallel algorithms for several problems, including coloring of planar graphs and (delta + 1)-coloring of constant-degree graphs. Lower bounds for two related problems are proved.

Research Organization:
Massachusetts Inst. of Tech., Cambridge (USA). Lab. for Computer Science
OSTI ID:
6487978
Report Number(s):
AD-A-178287/9/XAB; MIT/LCS/TM-320
Country of Publication:
United States
Language:
English