Fix to MPI PArray copy

src/HYPRE.jl

@@ -459,15 +459,16 @@ function Internals.get_proc_rows(A::Union{PSparseMatrix, PVector})
     end
     ilower::HYPRE_BigInt = typemax(HYPRE_BigInt)
     iupper::HYPRE_BigInt = typemin(HYPRE_BigInt)
-    low_high = map(r) do a
+    map(r) do a
+        # This is a map over the local process' owned indices. For MPI it will
+        # be a single value but for DebugArray / Array it will have multiple
+        # values.
         o_to_g = own_to_global(a)
         ilower_part = o_to_g[1]
         iupper_part = o_to_g[end]
-        return ilower_part, iupper_part
+        ilower = min(ilower, convert(HYPRE_BigInt, ilower_part))
+        iupper = max(iupper, convert(HYPRE_BigInt, iupper_part))
     end
-    low, high = tuple_of_arrays(low_high)
-    ilower = convert(HYPRE_BigInt, reduce(min, low))
-    iupper = convert(HYPRE_BigInt, reduce(max, high))
     return ilower, iupper
 end
 
@@ -553,7 +554,6 @@ function Base.copy!(dst::PVector, src::HYPREVector)
         iu_src_part = o_to_g[end]
         nvalues = HYPRE_Int(iu_src_part - il_src_part + 1)
         indices = collect(HYPRE_BigInt, il_src_part:iu_src_part)
-        values = collect(HYPRE_Complex, ov)
         if subarray_unsafe_supported()
             values = ov
         else