@simonbyrne I had a chance to try it, and the results are not good:
julia> @btime svdvals($B);
1.371 ms (11 allocations: 138.20 KiB)
julia> versioninfo()
Julia Version 0.6.2
Commit d386e40c17* (2017-12-13 18:08 UTC)
Platform Info:
OS: Windows (x86_64-w64-mingw32)
CPU: Intel(R) Core(TM) i7-7820HQ CPU @ 2.90GHz
WORD_SIZE: 64
BLAS: libopenblas (USE64BITINT DYNAMIC_ARCH NO_AFFINITY Prescott)
LAPACK: libopenblas64_
LIBM: libopenlibm
LLVM: libLLVM-3.9.1 (ORCJIT, broadwell)
This is the same machine where Julia on a Linux VirtualBox takes 673us.
One more thing, on Linux I build Julia from source, while on Windows I’m using the precompiled binary. I don’t expect this to cause much difference (but you never know).