gpuify_error.jl

using Pkg
using LinearAlgebra
using StaticArrays
using GPUifyLoops

@static if haskey(Pkg.installed(), "CuArrays")
    using CUDAdrv
    using CUDAnative
    using CuArrays
    CuArrays.allowscalar(false)
    device = CUDA()
else
    device = CPU()    
end

@noinline function getstuff(arr, sym)
    if sym == :a
        SVector(1.0,2.0,3.0)
    elseif sym == :b
        SVector(4.0,5.0,6.0)
    else
        SVector(7.0,8.0,9.0)
    end
end


function kernel!()

    A = MArray{Tuple{3, 3}, Float64}(undef)

    @inbounds begin
        @loop for i in (1:5; threadIdx().x)
            A[:,3] = getstuff(A, :a)
        end
        @synchronize

    end
    nothing
end


function foo(device, n)
    for i = 1:n
        @launch(device, threads=(5,5,1), blocks=1000,
                kernel!())
    end
end
foo(device, 1000)