From 881d1452e1a63dc9a2fa6d42ca422885f9762eb4 Mon Sep 17 00:00:00 2001 From: Alexis Montoison Date: Wed, 25 Sep 2024 15:53:12 -0500 Subject: [PATCH] Remove nnz_colors in sparsity_pattern.jl --- src/sparsity_pattern.jl | 34 ---------------------------------- 1 file changed, 34 deletions(-) diff --git a/src/sparsity_pattern.jl b/src/sparsity_pattern.jl index 7ab05654..bc3cf3ef 100644 --- a/src/sparsity_pattern.jl +++ b/src/sparsity_pattern.jl @@ -51,37 +51,3 @@ function compute_hessian_sparsity( S = ADTypes.hessian_sparsity(lagrangian, x0, detector) return S end - -""" - dcolors = nnz_colors(trilH, star_set, colors, ncolors) - -Determine the coefficients in `trilH` that will be computed by a given color. - -Arguments: -- `trilH::SparseMatrixCSC`: The lower triangular part of a symmetric matrix in CSC format. -- `star_set::StarSet`: A structure `StarSet` returned by the function `symmetric_coloring_detailed` of SparseMatrixColorings.jl. -- `colors::Vector{Int}`: A vector where the i-th entry represents the color assigned to the i-th column of the matrix. -- `ncolors::Int`: The number of distinct colors used in the coloring. - -Output: -- `dcolors::Dict{Int, Vector{Tuple{Int, Int}}}`: A dictionary where the keys are the color indices (from 1 to `ncolors`), -and the values are vectors of tuples. Each tuple contains two integers: the first integer is the row index, and the -second integer is the index in `trilH.nzval` where the non-zero coefficient can be found. -""" -function nnz_colors(trilH, star_set, colors, ncolors) - # We want to determine the coefficients in `trilH` that will be computed by a given color. - # Because we exploit the symmetry, we also need to store the row index for a given coefficient - # in the "compressed column". - dcolors = Dict(i => Tuple{Int, Int}[] for i = 1:ncolors) - - n = LinearAlgebra.checksquare(trilH) - for j = 1:n - for k = trilH.colptr[j]:(trilH.colptr[j + 1] - 1) - i = trilH.rowval[k] - l, c = symmetric_coefficient(i, j, colors, star_set) - push!(dcolors[c], (l, k)) - end - end - - return dcolors -end