Oh wait, I was referring to Vec from FixedSizeArrays.jl , not from SIMD
> On 16 Nov. 2016, at 6:39 pm, Gunnar Farnebäck <gun...@lysator.liu.se> wrote:
>
> Is this what you're looking for?
>
> julia> using SIMD
>
> julia> v = rand(2, 5)
> 2×5 Array{Float64,2}:
> 0.391832 0.785861 0.352291 0.874891 0.874593
> 0.697768 0.51637 0.711525 0.400077 0.266559
>
> julia> w = reinterpret(Vec{2, Float64}, vec(v))
> 5-element Array{SIMD.Vec{2,Float64},1}:
> Float64⟨0.391832,0.697768⟩
> Float64⟨0.785861,0.51637⟩
> Float64⟨0.352291,0.711525⟩
> Float64⟨0.874891,0.400077⟩
> Float64⟨0.874593,0.266559⟩
>
>
> Den onsdag 16 november 2016 kl. 05:52:14 UTC+1 skrev Sheehan Olver:
>
> In some high performance code I want to convert an 2 x n `Matrix{Float64}` to
> a n long `Matrix{Vec{2,Float64}}`with no memory allocation (both types will
> store memory in the same order). The following works:
>
> v=rand(2,100)
> w=unsafe_wrap(Vector{Vec{2,Float64}},
> reinterpret(Ptr{Vec{2,Float64}},pointer(v)),
> size(pts,1),true)
>
> The variable v is a throw away variable, however, and as I understand it, the
> way its written the memory for w will be freed as soon as v is no longer
> referenced. Is there any way to tell the garbage collector to not collect v?
