Merge pull request #2360 from FluxML/bc/amd-rng-fix

Use stable API for AMDGPU RNG conversion

Author: ToucheSir

ext/FluxAMDGPUExt/functor.jl

@@ -40,8 +40,7 @@ end
 adapt_storage(::FluxAMDGPUAdaptor, x::Zygote.FillArrays.AbstractFill) =
     ROCArray(collect(x))
 adapt_storage(::FluxAMDGPUAdaptor, x::Zygote.OneElement) = ROCArray(collect(x))
-adapt_storage(::FluxAMDGPUAdaptor, x::Random.TaskLocalRNG) =
-    AMDGPU.rocRAND.default_rng()
+adapt_storage(::FluxAMDGPUAdaptor, x::Random.TaskLocalRNG) = AMDGPU.rocrand_rng()
 adapt_storage(::FluxAMDGPUAdaptor, x::AMDGPU.rocRAND.RNG) = x
 adapt_storage(::FluxAMDGPUAdaptor, x::AbstractRNG) = error("""
     Cannot map RNG of type $(typeof(x)) to AMDGPU.

test/ext_amdgpu/basic.jl

@@ -86,6 +86,13 @@ end
     @test parent(Flux.gpu(g3)) isa ROCMatrix{Float32}
 end
 
+@testset "cpu and gpu on RNGs" begin
+    crng = Random.default_rng()
+    grng = gpu(crng)
+    @test grng isa AMDGPU.rocRAND.RNG
+    @test cpu(grng) === crng
+end
+
 @testset "Flux.onecold gpu" begin
     y = Flux.onehotbatch(ones(3), 1:10) |> Flux.gpu
     l = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j']