Fix resize! when pool=none is in use (#2613)

Author: luraess

lib/cudadrv/memory.jl

@@ -59,7 +59,7 @@ GPU, and requires explicit calls to `unsafe_copyto!`, which wraps `cuMemcpy`,
 for access on the CPU.
 """
 function alloc(::Type{DeviceMemory}, bytesize::Integer;
-               async::Bool=memory_pools_supported(device()),
+               async::Bool=false,
                stream::Union{Nothing,CuStream}=nothing,
                pool::Union{Nothing,CuMemoryPool}=nothing)
     bytesize == 0 && return DeviceMemory()

src/array.jl

@@ -838,14 +838,14 @@ function Base.resize!(A::CuVector{T}, n::Integer) where T
   # replace the data with a new one. this 'unshares' the array.
   # as a result, we can safely support resizing unowned buffers.
   new_data = context!(context(A)) do
-    mem = alloc(memory_type(A), bufsize)
+    mem = pool_alloc(memory_type(A), bufsize)
     ptr = convert(CuPtr{T}, mem)
     m = min(length(A), n)
     if m > 0
       synchronize(A)
       unsafe_copyto!(ptr, pointer(A), m)
     end
-    DataRef(pool_free, Managed(mem))
+    DataRef(pool_free, mem)
   end
   unsafe_free!(A)