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/*! \file
    \brief Describes the lane policy used by warp-level matrix multiply operators targeting SIMT
      instructions
*/

#pragma once

#include "cutlass/cutlass.h"

namespace cutlass {
namespace gemm {
namespace warp {

/////////////////////////////////////////////////////////////////////////////////////////////////

/// Describes the arrangement and configuration of per-lane operations in warp-level matrix multiply 
template <
  typename WarpShape_,              ///< shape of the warp in lanes (concept: MatrixShape)
  typename LaneLayout_,             ///< layout function of lanes
  typename LaneMmaShape_            ///< size of each lane's thread-level matrix product (concept: GemmShape)
>
struct MmaSimtPolicy {
  using WarpShape = WarpShape_;
  using LaneLayout = LaneLayout_;
  using LaneMmaShape = LaneMmaShape_;
  using MmaShape = LaneMmaShape;

  /// Returns a layout functor mapping lane position in the warp to thread ID
  CUTLASS_HOST_DEVICE
  static LaneLayout get_lane_layout() {
    return LaneLayout::packed({WarpShape::kRow, WarpShape::kColumn});
  }
};

/////////////////////////////////////////////////////////////////////////////////////////////////

} // namespace warp
} // namespace gemm
} // namespace cutlass