sparse: materialize lazy transpose/adjoint benchmarks#344
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`transpose(m)` and `adjoint(cm)` on a SparseMatrixCSC return lazy `Transpose`/`Adjoint` wrappers since Julia 1.0 — just a struct allocation, sub-microsecond regardless of matrix size, and dominated by measurement noise. Wrap in `copy(...)` so the benchmarks actually materialize the transposed matrix and exercise the sparse transpose code path, like their `transpose!`/`adjoint!` siblings do.
vtjnash
approved these changes
May 7, 2026
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transpose(m)andadjoint(cm)on a SparseMatrixCSC return lazyTranspose/Adjointwrappers since Julia 1.0 — just a struct allocation, sub-microsecond regardless of matrix size, and dominated by measurement noise. Wrap incopy(...)so the benchmarks actually materialize the transposed matrix and exercise the sparse transpose code path, like theirtranspose!/adjoint!siblings do.