size(collect(F.Q)) != size(Matrix(F.Q)) when size(F, 1) > size(F, 2) for F :: CuQR

[tkf]

julia> F = qr(CuArrays.ones(5, 1))
       @show size(F.Q) size(collect(F.Q)) size(Matrix(F.Q));
size(F.Q) = (5, 5)
size(collect(F.Q)) = (5, 5)
size(Matrix(F.Q)) = (5, 1)

My setup is described in #392.

[maleadt]

This is true in Base as well, or am I misunderstanding something?

julia> F = qr(ones(5,1))
       @show size(F.Q) size(collect(F.Q)) size(Matrix(F.Q));
size(F.Q) = (5, 5)
size(collect(F.Q)) = (5, 5)
size(Matrix(F.Q)) = (5, 1)

[tkf]

Sorry, I didn't check it with the normal array. It turns out Matrix(Q) returns a thin matrix. JuliaLang/julia#27397