That loop is not proper julia syntax (i.e., this issue has nothing to do with
CUDArt).
julia> global s
julia> s = 0
0
julia> s = for i = 1:10
s = s+1
end
julia> s
julia> s == nothing
true
--Tim
On Friday, February 12, 2016 08:51:47 AM Joaquim Masset Lacombe Dias Garcia
wrote:
> Can I have a standard julia "for loop" inside a "device do" of CUDArt?
>
> I tried the following example:
>
> using CUDArt, MyCudaModule
>
> nrow = 10
> ncol = 3000
>
> mat = ones(Float64,nrow,ncol)
> out1 = zeros(Float64,nrow)
> vec = Float64[1:nrow;]
> out2 = zeros(Float64,nrow)
>
> d_mat = CudaArray(mat)
> d_out1 = CudaArray(out1)
> d_vec = CudaArray(vec)
> d_out2 = CudaArray(out2)
> d_nrow = CudaArray(Int32[nrow;])
> d_ncol = CudaArray(Int32[ncol;])
>
> result = devices(dev->capability(dev)[1]>=2) do devlist
> MyCudaModule.init(devlist) do dev
> blocks = 1
> threads = nrow
> global result = 0
> result = for i in 1:10
> MyCudaModule.cudaSumCol(d_out1,d_mat,d_ncol,blocks,threads)
>
> result = to_host(d_out1)[1]
> end
> end
> end
>
> cudaSumCol is a function ta simply sums a matrix´s entries convetring it
> into a column, it was wrapped just like the example on CUArt´s README.
> the above code without the loop part work just perfectly.
>
> Should I try something different, like not using the do devlist?
>
> thanks,
> Joaquim
