Refactor Julia ktruss implementation#5
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Use CHOLMOD.Sparse for sparse matmul, to avoid the cost of sorting the row indices when that isn't necessary Devectorize the various sums over columns, instead iterate over each nonzero in the sparsity structure directly Results in about a 3x speedup on amazon0302
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Use CHOLMOD.Sparse for sparse matmul, to avoid the cost of sorting
the row indices when that isn't necessary
Devectorize the various sums over columns, instead iterate over
each nonzero in the sparsity structure directly
Results in about a 3x speedup on amazon0302