Copy with CuArrays and `allowscalar(false)`

New to Julia
1

Hi,

I am using CuArrays but the following operation seems unsupported:

using CuArrays
x=rand(10) |> cu;
CuArrays.allowscalar(false)
V[:,1] .= x;

It gives:

ERROR: scalar getindex is disabled

Using copy! from link is troublesome because a CuArray does not have ptr in its struct.

Is there a way around?

Thank you for your help.

2

That’s a bug, it should use the buf field. Probably not covered by the tests.

3

Should I open an issue in CuArrays?

4

Yeah. Adapting the code should be pretty easy though, just look at the preceding functions. I can have a look in a couple of days, better open an issue not to lose track though.

5

@rveltz, @maleadt I just run into the same problem when trying to prepare some high-level CuArrays example code. Has this been solved already meanwhile (I had to downgrade the CUDA packages due to some issues, so I don’t know if it is fixed in the newest versions)? Could you put here the link to the corresponding issue?

6

Your issue is probably not related to this one, which has been fixed. Please open a bug report with the specific invocation that triggers scalar iteration.

7

@maleadt: you are absolutely right; it is a different issue. I created a bug report:
https://github.com/JuliaGPU/CuArrays.jl/issues/534