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JuliaLinearAlgebra / MatrixDepot.jl

An Extensible Test Matrix Collection for Julia
http://matrixdepotjl.readthedocs.org/
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Symmetric matrices #26

Closed dpo closed 3 years ago

dpo commented 7 years ago

It's probably not a good idea to declare symmetric matrices as Symmetric{...} for the time being because it seems sparsity is then ignored. See https://discourse.julialang.org/t/slow-matrix-vector-product-with-symmetric-matrices/3968 for some timings and an explanation.

KlausC commented 3 years ago

Matrices of type Symmetric{Real,SparseMatrixCSC} have now support for fast operations. If that is not enough, you can transform to a pure sparse matrix using sparse.