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- W2082081158 abstract "Many iterative algorithms for the solution of large linear systems may be effectively vectorized if the diagonal of the matrix is surrounded by a large band of zeroes, whose width is called the zero stretch. In this paper, a multicolor numbering technique is suggested for maximizing the zero stretch of irregularly sparse matrices. The technique, which is a generalization of a known multicoloring algorithm for regularly sparse matrices, executes in linear time, and produces a zero stretch approximately equal to n /2σ, where 2σ is the number of colors used in the algorithm. For triangular meshes, it is shown that σ ≤ 3, and that it is possible to obtain σ = 2 by applying a simple backtracking scheme." @default.
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- W2082081158 date "1988-06-01" @default.
- W2082081158 modified "2023-09-27" @default.
- W2082081158 title "Multicolor reordering of sparse matrices resulting from irregular grids" @default.
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- W2082081158 doi "https://doi.org/10.1145/45054.214373" @default.
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