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/*! \file
    \brief 
      Default kernel-level Sparse GEMM definitions combine threadblock-scoped matrix multiply-add with
      the appropriate threadblock-scoped epilogue.
  
      Note, CUTLASS epilogues universally target row-major outputs. Column-major outputs are
      accommodated by exchanging A and B operands and assuming transposed layouts. Partial
      specializations here choose 'device::GemmTransposed' to implement this functionality.

*/

#pragma once

#include "cutlass/cutlass.h"

#include "cutlass/complex.h"
#include "cutlass/layout/matrix.h"
#include "cutlass/numeric_types.h"

#include "cutlass/epilogue/threadblock/default_epilogue_with_absmax.h"
#include "cutlass/gemm/kernel/gemm_sparse_universal_with_absmax.h"
#include "cutlass/gemm/kernel/default_gemm_sparse.h"

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

namespace cutlass {
namespace gemm {
namespace kernel {

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

//
// Real-valued GEMM kernels
//

template <
    /// Element type for A matrix operand
    typename ElementA,
    /// Layout type for A matrix operand
    typename LayoutA,
    /// Access granularity of A matrix in units of elements
    int kAlignmentA,
    /// Element type for B matrix operand
    typename ElementB,
    /// Layout type for B matrix operand
    typename LayoutB,
    /// Access granularity of B matrix in units of elements
    int kAlignmentB,
    /// Element type for C and D matrix operands
    typename ElementC,
    /// Layout type for C and D matrix operands
    typename LayoutC,
    /// Element type for internal accumulation
    typename ElementAccumulator,
    /// Operator class tag
    typename OperatorClass,
    /// Tag indicating architecture to tune for
    typename ArchTag,
    /// Threadblock-level tile size (concept: GemmShape)
    typename ThreadblockShape,
    /// Warp-level tile size (concept: GemmShape)
    typename WarpShape,
    /// Warp-level tile size (concept: GemmShape)
    typename InstructionShape,
    /// Epilogue output operator
    typename EpilogueOutputOp,
    /// Threadblock-level swizzling operator
    typename ThreadblockSwizzle,
    /// Number of stages used in the pipelined mainloop
    int Stages,
    /// Operation performed by GEMM
    typename Operator
>
struct DefaultGemmSparseUniversalWithAbsmax {

  using GemmBase = typename DefaultSparseGemm<
    ElementA, LayoutA, kAlignmentA,
    ElementB, LayoutB, kAlignmentB,
    ElementC, LayoutC, ElementAccumulator,
    OperatorClass,
    ArchTag,
    ThreadblockShape,
    WarpShape,
    InstructionShape,
    EpilogueOutputOp,
    ThreadblockSwizzle,
    Stages,
    false, // SplitKSerial
    Operator
  >::GemmKernel;

  using Epilogue = typename cutlass::epilogue::threadblock::DefaultEpilogueWithAbsMax<
    typename GemmBase::Epilogue::Shape,
    typename GemmBase::Epilogue::WarpMmaOperator,
    GemmBase::Epilogue::kPartitionsK,
    ElementC,
    typename EpilogueOutputOp::ElementAuxOutput,
    ElementC,
    EpilogueOutputOp,
    GemmBase::Epilogue::kElementsPerAccess
  >::Epilogue;

  using GemmKernel = kernel::GemmSparseUniversalWithAbsmax<
      typename GemmBase::Mma, Epilogue, ThreadblockSwizzle>;
};

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

}  // namespace kernel
}  // namespace gemm
}  // namespace cutlass

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