reduction_operators.h

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#pragma once

#include "cutlass/cutlass.h"
#include "cutlass/tensor_ref.h"
#include "cutlass/numeric_types.h"
#include "cutlass/array.h"
#include "cutlass/functional.h"
#include "cutlass/numeric_conversion.h"

namespace cutlass {
namespace reduction {
namespace thread {


template <
  typename ElementAccumulator_,
  typename Element_,
  int Count = 1
>
struct ReduceAdd {

  //
  // Type definitions
  //

  using ElementAccumulator = ElementAccumulator_;
  using Element = Element_;
  static int const kCount = Count;

  using FragmentAccumulator = cutlass::Array<ElementAccumulator, kCount>;
  using FragmentElement = cutlass::Array<Element, kCount>;

  struct Params { };

  //
  // Data members
  //

  Params params;

  //
  // Methods
  //

  CUTLASS_HOST_DEVICE
  ReduceAdd(Params params_ = Params()): params(params_) { }

  CUTLASS_HOST_DEVICE
  FragmentAccumulator operator()(
    FragmentAccumulator accumulator, 
    FragmentElement element) const {

    plus<FragmentAccumulator> op;

    return op(accumulator, element);
  }
};


} // namespace thread
} // namespace reduction
} // namespace cutlass