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+# Implemented ArrayHandleRandomUniformBits and ArrayHandleRandomUniformReal
+
+ArrayHandleRandomUniformBits and ArrayHandleRandomUniformReal were added to provide
+an efficient way to generate pseudo random numbers in parallel. They are based on the
+Philox parallel pseudo random number generator. ArrayHandleRandomUniformBits provides
+64-bits random bits in the whole range of UInt64 as its content while
+ArrayHandleRandomUniformReal provides random Float64 in the range of [0, 1). User can
+either provide a seed in the form of Vec<vtkm::Uint32, 1> or use the default random
+source provided by the C++ standard library. Both of the ArrayHandles  are lazy evaluated
+as other Fancy ArrayHandles such that they only have O(1) memory overhead. They are
+stateless and functional and does not change once constructed. To generate a new set of
+random numbers, for example as part of a iterative algorithm, a  new ArrayHandle
+needs to be constructed in each iteration. See the user's guide for more detail and
+examples.