// Copyright (c) Advanced Micro Devices, Inc., or its affiliates.
// SPDX-License-Identifier: MIT

#pragma once

#include <iostream>
#include <sstream>

#include "ck/utility/common_header.hpp"
#include "ck/tensor_description/tensor_descriptor.hpp"
#include "ck/tensor_description/tensor_descriptor_helper.hpp"
#include "ck/tensor_operation/gpu/device/tensor_layout.hpp"
#include "ck/tensor_operation/gpu/device/device_batched_contraction_multiple_d.hpp"
#include "ck/tensor_operation/gpu/device/gemm_specialization.hpp"
#include "ck/tensor_operation/gpu/device/tensor_specialization.hpp"
#include "ck/tensor_operation/gpu/device/matrix_padder.hpp"
#include "ck/tensor_operation/gpu/grid/gridwise_gemm_wmma_cshuffle_v3.hpp"
#include "ck/host_utility/device_prop.hpp"
#include "ck/host_utility/kernel_launch.hpp"
#include "ck/utility/scheduler_enum.hpp"

namespace ck {

template <typename DeviceOp,
          typename GridwiseOp,
          bool HasMainKBlockLoop,
          index_t MinimumOccupancy = 1,
          TailNumber TailNum       = TailNumber::Full>
__global__ void
#if CK_USE_LAUNCH_BOUNDS
__launch_bounds__(CK_MAX_THREAD_PER_BLOCK, MinimumOccupancy)
#endif
    kernel_contraction_multiple_d_wmma_cshuffle_v3(typename DeviceOp::Argument karg)
{
#if(defined(__gfx11__) || defined(__gfx12__))
    static constexpr index_t NumDTensor = GridwiseOp::NumDTensor;

    const index_t g_idx = amd_wave_read_first_lane(blockIdx.y);

    const long_index_t a_batch_offset =
        amd_wave_read_first_lane(karg.compute_ptr_offset_of_batch_.GetAPtrOffset(g_idx));
    const long_index_t b_batch_offset =
        amd_wave_read_first_lane(karg.compute_ptr_offset_of_batch_.GetBPtrOffset(g_idx));
    const long_index_t e_batch_offset =
        amd_wave_read_first_lane(karg.compute_ptr_offset_of_batch_.GetEPtrOffset(g_idx));

    const auto ds_batch_offset =
        amd_wave_read_first_lane(karg.compute_ptr_offset_of_batch_.GetDsPtrOffset(g_idx));

    typename GridwiseOp::AsGridPointer p_as_grid_batch{karg.p_a_grid_ + a_batch_offset};
    typename GridwiseOp::BsGridPointer p_bs_grid_batch{karg.p_b_grid_ + b_batch_offset};
    typename GridwiseOp::DsGridPointer p_ds_grid_batch;

    static_for<0, NumDTensor, 1>{}(
        [&](auto i) { p_ds_grid_batch(i) = karg.p_ds_grid_[i] + ds_batch_offset[i]; });

    using EpilogueType = typename std::conditional<GridwiseOp::IsBWaveTransferApplicable &&
                                                       GridwiseOp::UseDirectStore,
                                                   typename GridwiseOp::EpilogueDirectStore,
                                                   typename GridwiseOp::EpilogueCShuffle>::type;

    constexpr index_t LDS_size = GridwiseOp::template GetSharedMemoryNumberOfByte<EpilogueType>();
    __shared__ char p_shared[LDS_size];

    const auto a_grid_desc_ak0_m_ak1 =
        GridwiseOp::MakeAGridDescriptor_AK0_M_AK1(karg.a_grid_desc_m_k_);
    const auto b_grid_desc_bk0_n_bk1 =
        GridwiseOp::MakeBGridDescriptor_BK0_N_BK1(karg.b_grid_desc_n_k_);

    auto epilogue_args = EpilogueType{};
    GridwiseOp::template Run<HasMainKBlockLoop, InMemoryDataOperationEnum::Set, TailNum>(
        p_as_grid_batch,
        p_bs_grid_batch,
        p_ds_grid_batch,
        karg.p_e_grid_ + e_batch_offset,
        p_shared,
        make_tuple(a_grid_desc_ak0_m_ak1),
        make_tuple(b_grid_desc_bk0_n_bk1),
        karg.ds_grid_desc_mblock_mperblock_nblock_nperblock_,
        karg.e_grid_desc_mblock_mperblock_nblock_nperblock_,
        karg.block_2_etile_map_,
        karg.a_element_op_,
        karg.b_element_op_,
        karg.cde_element_op_,
        epilogue_args);
#else
    ignore = karg;
#endif
}

} // namespace ck

namespace ck {
namespace tensor_operation {
namespace device {

// Tensor Contraction:
//   input : A
//   input : B
//   input : D0, D1, ...
//   output : E
//   C = a_op(A) * b_op(B)
//   E = cde_op(C, D0, D1, ...)
// Assume:
//   A[G0, G1, ..., M0, M1, M2, ..., K0, K1, K2, ...]
//   B[G0, G1, ..., N0, N1, N2, ..., K0, K1, K2, ...]
//   D[G0, G1, ..., M0, M1, M2, ..., N0, N1, N2, ...]
//   E[G0, G1, ..., M0, M1, M2, ..., N0, N1, N2, ...]

// NOTE: TensorSpecialization::Packed specialized tensor is "packed" in a sense that each inner
// dimension in a dimension group (eg [G0, G1] in Gs, [M0, M1, M2] in Ms, etc.) are contiguous and
// ordered. Not in a sense that the tensor [G0, G1, ..., M0, M1, ..., N0, N1...] can be permuted
// while still being a contiguous, unpadded tensor. In other words, it merely degenerates into
// TensorSpecialization::Default with NumDimG/M/N/K = 1
//
// Detail- Packed tensor satisfies
//   stride_0 = 1
//   stride_i = stride_{i - 1} * extent_{i - 1}
// So tensor
//   [G0, G1, G2, M, N]
// transposed into tensor
//   [G0, G2, G1, M, N]
// with strides
//   [G2 * G1 * M * N, G1 * M * N, M * N, N, 1]
// is again a packed tensor. MakeGridDescriptor() currently just merges dimensions and ignores some
// strides from input tensor extents so finer dimension information is lost. Merging dimensions is
// essentially a degenerated case of TensorSpecialization::Default with NumDimG/M/N/K = 1.
//
// Might need to expose dimension order to the interface to fully support
// TensorSpecialization::Packed in a traditional sense of "packed" tensor
template <index_t NumDimG,
          index_t NumDimM,
          index_t NumDimN,
          index_t NumDimK,
          typename ADataType,
          typename BDataType,
          typename AccDataType,
          typename CShuffleDataType,
          typename DsDataType,
          typename EDataType,
          typename AElementwiseOperation,
          typename BElementwiseOperation,
          typename CDEElementwiseOperation,
          GemmSpecialization GemmSpec,
          TensorSpecialization ASpec,
          TensorSpecialization BSpec,
          TensorSpecialization DESpec,
          index_t BlockSize,
          index_t MPerBlock,
          index_t NPerBlock,
          index_t KPerBlock,
          index_t AK1,
          index_t BK1,
          index_t MPerWmma,
          index_t NPerWmma,
          index_t MRepeat,
          index_t NRepeat,
          typename ABlockTransferThreadClusterLengths_AK0_M_AK1,
          typename ABlockTransferThreadClusterArrangeOrder,
          typename ABlockTransferSrcAccessOrder,
          index_t ABlockTransferSrcVectorDim,
          index_t ABlockTransferSrcScalarPerVector,
          index_t ABlockTransferDstScalarPerVector_AK1,
          bool ABlockLdsExtraM,
          typename BBlockTransferThreadClusterLengths_BK0_N_BK1,
          typename BBlockTransferThreadClusterArrangeOrder,
          typename BBlockTransferSrcAccessOrder,
          index_t BBlockTransferSrcVectorDim,
          index_t BBlockTransferSrcScalarPerVector,
          index_t BBlockTransferDstScalarPerVector_BK1,
          bool BBlockLdsExtraN,
          index_t CShuffleMRepeatPerShuffle,
          index_t CShuffleNRepeatPerShuffle,
          typename CDEBlockTransferClusterLengths_MBlock_MPerBlock_NBlock_NPerBlock,
          typename CDEBlockTransferScalarPerVector_NPerBlock,
          BlockGemmPipelineScheduler BlkGemmPipeSched = BlockGemmPipelineScheduler::Intrawave,
          BlockGemmPipelineVersion BlkGemmPipelineVer = BlockGemmPipelineVersion::v1,
          typename ComputeTypeA                       = EDataType,
          typename ComputeTypeB                       = ComputeTypeA>
struct DeviceBatchedContractionMultipleD_Wmma_CShuffle_V3
    : public DeviceBatchedContractionMultipleD<NumDimG,
                                               NumDimM,
                                               NumDimN,
                                               NumDimK,
                                               ADataType,
                                               BDataType,
                                               DsDataType,
                                               EDataType,
                                               AElementwiseOperation,
                                               BElementwiseOperation,
                                               CDEElementwiseOperation>
{
    using DeviceOp = DeviceBatchedContractionMultipleD_Wmma_CShuffle_V3;

    static constexpr index_t NumDTensor = DsDataType::Size();

    static constexpr auto I0 = Number<0>{};
    static constexpr auto I1 = Number<1>{};
    static constexpr auto I2 = Number<2>{};
    static constexpr auto I3 = Number<3>{};

    static constexpr auto matrix_padder =
        MatrixPadder<GemmSpec, index_t, index_t, index_t>{MPerBlock, NPerBlock, KPerBlock};

    // Assume: A[G0, G1, ..., M0, M1, M2, ..., K0, K1, K2, ...]
    static auto MakeAGridDescriptor_M_K(const std::vector<index_t>& a_gs_ms_ks_lengths_vec,
                                        const std::vector<index_t>& a_gs_ms_ks_strides_vec)
    {
        assert(a_gs_ms_ks_lengths_vec.size() == NumDimG + NumDimM + NumDimK &&
               a_gs_ms_ks_strides_vec.size() == NumDimG + NumDimM + NumDimK);

        const auto to_tuple = [&](auto& vec, auto start, auto end) {
            return generate_tuple([&](auto i) { return vec[start + i]; }, Number<end - start>{});
        };

        const auto a_ms_ks_lengths = to_tuple(
            a_gs_ms_ks_lengths_vec, Number<NumDimG>{}, Number<NumDimG + NumDimM + NumDimK>{});
        const auto a_ms_ks_strides = to_tuple(
            a_gs_ms_ks_strides_vec, Number<NumDimG>{}, Number<NumDimG + NumDimM + NumDimK>{});

        // dimension Ids for M0, M1, ...
        constexpr auto mDimIds = typename arithmetic_sequence_gen<0, NumDimM, 1>::type{};

        // dimension Ids for K0, K1, ...
        constexpr auto kDimIds =
            typename arithmetic_sequence_gen<NumDimM, NumDimM + NumDimK, 1>::type{};

        // lengths for M0, M1, ...
        const auto mLengths = get_container_subset(a_ms_ks_lengths, mDimIds);

        // lengths for K0, K1, ...
        const auto kLengths = get_container_subset(a_ms_ks_lengths, kDimIds);

        if constexpr(ASpec == TensorSpecialization::Packed)
        {
            auto M = container_reduce(mLengths, math::multiplies{}, Number<1>{});
            auto K = container_reduce(kLengths, math::multiplies{}, Number<1>{});
            const auto a_grid_desc_mraw_kraw = make_naive_tensor_descriptor(
                make_tuple(M, K),
                make_tuple(a_ms_ks_strides[Number<NumDimM - 1>{}],
                           a_ms_ks_strides[Number<NumDimM + NumDimK - 1>{}]));
            return matrix_padder.PadADescriptor_M_K(a_grid_desc_mraw_kraw);
        }
        else
        {
            // naive tensor A[M0, M1, M2, ..., K0, K1, K2...]
            const auto a_grid_desc_ms_ks =
                make_naive_tensor_descriptor(a_ms_ks_lengths, a_ms_ks_strides);

            // transformed tensor A[MRaw = M0 * M1 * M2 * ... , KRaw = K0 * K1 * K2 * ...]
            const auto a_grid_desc_mraw_kraw = transform_tensor_descriptor(
                a_grid_desc_ms_ks,
                make_tuple(make_merge_transform(mLengths), make_merge_transform(kLengths)),
                make_tuple(mDimIds, kDimIds),
                make_tuple(Sequence<0>{}, Sequence<1>{}));

            return matrix_padder.PadADescriptor_M_K(a_grid_desc_mraw_kraw);
        }
    }

    // Assume: B[G0, G1, ..., N0, N1, N2, ..., K0, K1, K2, ...]
    static auto MakeBGridDescriptor_N_K(const std::vector<index_t>& b_gs_ns_ks_lengths_vec,
                                        const std::vector<index_t>& b_gs_ns_ks_strides_vec)
    {
        assert(b_gs_ns_ks_lengths_vec.size() == NumDimG + NumDimN + NumDimK &&
               b_gs_ns_ks_strides_vec.size() == NumDimG + NumDimN + NumDimK);

        const auto to_tuple = [&](auto& vec, auto start, auto end) {
            return generate_tuple([&](auto i) { return vec[start + i]; }, Number<end - start>{});
        };

        const auto b_ns_ks_lengths = to_tuple(
            b_gs_ns_ks_lengths_vec, Number<NumDimG>{}, Number<NumDimG + NumDimN + NumDimK>{});
        const auto b_ns_ks_strides = to_tuple(
            b_gs_ns_ks_strides_vec, Number<NumDimG>{}, Number<NumDimG + NumDimN + NumDimK>{});

        // dimension Ids for N0, N1, ...
        constexpr auto nDimIds = typename arithmetic_sequence_gen<0, NumDimN, 1>::type{};

        // dimension Ids for K0, K1, ...
        constexpr auto kDimIds =
            typename arithmetic_sequence_gen<NumDimN, NumDimN + NumDimK, 1>::type{};

        // lengths for K0, K1, ...
        const auto kLengths = get_container_subset(b_ns_ks_lengths, kDimIds);

        // lengths for N0, N1, ...
        const auto nLengths = get_container_subset(b_ns_ks_lengths, nDimIds);

        if constexpr(BSpec == TensorSpecialization::Packed)
        {
            auto N = container_reduce(nLengths, math::multiplies{}, Number<1>{});
            auto K = container_reduce(kLengths, math::multiplies{}, Number<1>{});
            const auto b_grid_desc_nraw_kraw = make_naive_tensor_descriptor(
                make_tuple(N, K),
                make_tuple(b_ns_ks_strides[Number<NumDimN - 1>{}],
                           b_ns_ks_strides[Number<NumDimN + NumDimK - 1>{}]));
            return matrix_padder.PadBDescriptor_N_K(b_grid_desc_nraw_kraw);
        }
        else
        {
            // naive tensor B[N0, N1, N2, ..., K0, K1, K2, ...]
            const auto b_grid_desc_ns_ks =
                make_naive_tensor_descriptor(b_ns_ks_lengths, b_ns_ks_strides);

            // transformed tensor B[NRaw = N0 * N1 * N2 * ..., KRaw = K0 * K1 * K2 * ...]
            const auto b_grid_desc_nraw_kraw = transform_tensor_descriptor(
                b_grid_desc_ns_ks,
                make_tuple(make_merge_transform(nLengths), make_merge_transform(kLengths)),
                make_tuple(nDimIds, kDimIds),
                make_tuple(Sequence<0>{}, Sequence<1>{}));

            return matrix_padder.PadBDescriptor_N_K(b_grid_desc_nraw_kraw);
        }
    }

    // assume E[G0, G1, ..., M0, M1, M2, ..., N0, N1, N2...]
    static auto MakeEGridDescriptor_M_N(const std::vector<index_t>& e_gs_ms_ns_lengths_vec,
                                        const std::vector<index_t>& e_gs_ms_ns_strides_vec)
    {
        assert(e_gs_ms_ns_lengths_vec.size() == NumDimG + NumDimM + NumDimN &&
               e_gs_ms_ns_strides_vec.size() == NumDimG + NumDimM + NumDimN);

        const auto to_tuple = [&](auto& vec, auto start, auto end) {
            return generate_tuple([&](auto i) { return vec[start + i]; }, Number<end - start>{});
        };

        const auto e_ms_ns_lengths = to_tuple(
            e_gs_ms_ns_lengths_vec, Number<NumDimG>{}, Number<NumDimG + NumDimM + NumDimN>{});
        const auto e_ms_ns_strides = to_tuple(
            e_gs_ms_ns_strides_vec, Number<NumDimG>{}, Number<NumDimG + NumDimM + NumDimN>{});

        // dimension Ids for M0, M1, ...
        constexpr auto mDimIds = typename arithmetic_sequence_gen<0, NumDimM, 1>::type{};

        // dimension Ids for N0, N1, ...
        constexpr auto nDimIds =
            typename arithmetic_sequence_gen<NumDimM, NumDimM + NumDimN, 1>::type{};

        // lengths for M0, M1, ...
        const auto mLengths = get_container_subset(e_ms_ns_lengths, mDimIds);

        // lengths for K0, K1, ...
        const auto nLengths = get_container_subset(e_ms_ns_lengths, nDimIds);

        if constexpr(DESpec == TensorSpecialization::Packed)
        {
            auto M = container_reduce(mLengths, math::multiplies{}, Number<1>{});
            auto N = container_reduce(nLengths, math::multiplies{}, Number<1>{});
            const auto e_grid_desc_mraw_nraw = make_naive_tensor_descriptor(
                make_tuple(M, N),
                make_tuple(e_ms_ns_strides[Number<NumDimM - 1>{}],
                           e_ms_ns_strides[Number<NumDimM + NumDimN - 1>{}]));
            return matrix_padder.PadCDescriptor_M_N(e_grid_desc_mraw_nraw);
        }
        else
        {
            // naive tensor E[M0, M1, M2, ..., N0, N1, N2...]
            const auto e_grid_desc_ms_ns =
                make_naive_tensor_descriptor(e_ms_ns_lengths, e_ms_ns_strides);

            // transformed tensor E[MRaw = M0 * M1 * M2 * ... , NRaw = N0 * N1 * N2 * ...]
            const auto e_grid_desc_mraw_nraw = transform_tensor_descriptor(
                e_grid_desc_ms_ns,
                make_tuple(make_merge_transform(mLengths), make_merge_transform(nLengths)),
                make_tuple(mDimIds, nDimIds),
                make_tuple(Sequence<0>{}, Sequence<1>{}));

            return matrix_padder.PadCDescriptor_M_N(e_grid_desc_mraw_nraw);
        }
    }

    // assume E[G0, G1, ..., M0, M1, M2, ..., N0, N1, N2...]
    static auto MakeEGridDescriptor_G_M_N(const std::vector<index_t>& e_gs_ms_ns_lengths_vec,
                                          const std::vector<index_t>& e_gs_ms_ns_strides_vec)
    {
        assert(e_gs_ms_ns_lengths_vec.size() == NumDimG + NumDimM + NumDimN &&
               e_gs_ms_ns_strides_vec.size() == NumDimG + NumDimM + NumDimN);

        const auto to_tuple = [&](auto& vec, auto start, auto end) {
            return generate_tuple([&](auto i) { return vec[start + i]; }, Number<end - start>{});
        };

        const auto e_gs_ms_ns_lengths =
            to_tuple(e_gs_ms_ns_lengths_vec, Number<0>{}, Number<NumDimG + NumDimM + NumDimN>{});
        const auto e_gs_ms_ns_strides =
            to_tuple(e_gs_ms_ns_strides_vec, Number<0>{}, Number<NumDimG + NumDimM + NumDimN>{});

        // dimension Ids for G0, G1, ...
        constexpr auto gDimIds = typename arithmetic_sequence_gen<0, NumDimG, 1>::type{};

        // dimension Ids for M0, M1, ...
        constexpr auto mDimIds =
            typename arithmetic_sequence_gen<NumDimG, NumDimG + NumDimM, 1>::type{};

        // dimension Ids for N0, N1, ...
        constexpr auto nDimIds = typename arithmetic_sequence_gen<NumDimG + NumDimM,
                                                                  NumDimG + NumDimM + NumDimN,
                                                                  1>::type{};

        // lengths for G0, G1, ...
        const auto gLengths = get_container_subset(e_gs_ms_ns_lengths, gDimIds);

        // lengths for M0, M1, ...
        const auto mLengths = get_container_subset(e_gs_ms_ns_lengths, mDimIds);

        // lengths for K0, K1, ...
        const auto nLengths = get_container_subset(e_gs_ms_ns_lengths, nDimIds);

        if constexpr(DESpec == TensorSpecialization::Packed)
        {
            auto G = container_reduce(gLengths, math::multiplies{}, Number<1>{});
            auto M = container_reduce(mLengths, math::multiplies{}, Number<1>{});
            auto N = container_reduce(nLengths, math::multiplies{}, Number<1>{});
            const auto e_grid_desc_g_mraw_nraw = make_naive_tensor_descriptor(
                make_tuple(G, M, N),
                make_tuple(e_gs_ms_ns_strides[Number<NumDimG - 1>{}],
                           e_gs_ms_ns_strides[Number<NumDimG + NumDimM - 1>{}],
                           e_gs_ms_ns_strides[Number<NumDimG + NumDimM + NumDimN - 1>{}]));
            // return matrix_padder.PadCDescriptor_M_N(e_grid_desc_g_mraw_nraw);
            return e_grid_desc_g_mraw_nraw;
        }
        else
        {
            // naive tensor E[G0, G1, ..., M0, M1, M2, ..., N0, N1, N2...]
            const auto e_grid_desc_gs_ms_ns =
                make_naive_tensor_descriptor(e_gs_ms_ns_lengths, e_gs_ms_ns_strides);

            // transformed tensor E[G = G0 * G1 * ..., MRaw = M0 * M1 * M2 * ... , NRaw = N0 * N1 *
            // N2 * ...]
            const auto e_grid_desc_g_mraw_nraw = transform_tensor_descriptor(
                e_grid_desc_gs_ms_ns,
                make_tuple(make_merge_transform(gLengths),
                           make_merge_transform(mLengths),
                           make_merge_transform(nLengths)),
                make_tuple(gDimIds, mDimIds, nDimIds),
                make_tuple(Sequence<0>{}, Sequence<1>{}, Sequence<2>{}));

            // return matrix_padder.PadCDescriptor_M_N(e_grid_desc_g_mraw_nraw);
            return e_grid_desc_g_mraw_nraw;
        }
    }

    static auto MakeDsGridDescriptor_M_N(
        const std::array<std::vector<index_t>, NumDTensor>& ds_gs_ms_ns_lengths_vec,
        const std::array<std::vector<index_t>, NumDTensor>& ds_gs_ms_ns_strides_vec)
    {
        return generate_tuple(
            [&](auto i) {
                return DeviceOp::MakeEGridDescriptor_M_N(ds_gs_ms_ns_lengths_vec[i],
                                                         ds_gs_ms_ns_strides_vec[i]);
            },
            Number<NumDTensor>{});
    }

    static auto MakeDsGridDescriptor_G_M_N(
        const std::array<std::vector<index_t>, NumDTensor>& ds_gs_ms_ns_lengths_vec,
        const std::array<std::vector<index_t>, NumDTensor>& ds_gs_ms_ns_strides_vec)
    {
        return generate_tuple(
            [&](auto i) {
                return DeviceOp::MakeEGridDescriptor_G_M_N(ds_gs_ms_ns_lengths_vec[i],
                                                           ds_gs_ms_ns_strides_vec[i]);
            },
            Number<NumDTensor>{});
    }

    // GridwiseGemm
    using ALayout  = ck::tensor_layout::gemm::RowMajor;
    using BLayout  = ck::tensor_layout::gemm::ColumnMajor;
    using DsLayout = decltype(generate_tuple(
        [](auto) { return ck::tensor_layout::gemm::RowMajor{}; }, Number<NumDTensor>{}));
    using ELayout  = ck::tensor_layout::gemm::RowMajor;

    using GridwiseGemm = GridwiseGemm_wmma_cshuffle_v3<
        ALayout,
        BLayout,
        DsLayout,
        ELayout,
        Tuple<ADataType>,
        Tuple<BDataType>,
        AccDataType,
        CShuffleDataType,
        DsDataType,
        EDataType,
        AElementwiseOperation,
        BElementwiseOperation,
        CDEElementwiseOperation,
        GemmSpec,
        BlockSize,
        MPerBlock,
        NPerBlock,
        KPerBlock,
        AK1,
        BK1,
        MPerWmma,
        NPerWmma,
        MRepeat,
        NRepeat,
        ABlockTransferThreadClusterLengths_AK0_M_AK1,
        ABlockTransferThreadClusterArrangeOrder,
        ABlockTransferSrcAccessOrder,
        ABlockTransferSrcVectorDim,
        ABlockTransferSrcScalarPerVector,
        ABlockTransferDstScalarPerVector_AK1,
        false,
        ABlockLdsExtraM,
        BBlockTransferThreadClusterLengths_BK0_N_BK1,
        BBlockTransferThreadClusterArrangeOrder,
        BBlockTransferSrcAccessOrder,
        BBlockTransferSrcVectorDim,
        BBlockTransferSrcScalarPerVector,
        BBlockTransferDstScalarPerVector_BK1,
        false,
        BBlockLdsExtraN,
        CShuffleMRepeatPerShuffle,
        CShuffleNRepeatPerShuffle,
        CDEBlockTransferClusterLengths_MBlock_MPerBlock_NBlock_NPerBlock,
        CDEBlockTransferScalarPerVector_NPerBlock,
        BlkGemmPipeSched,
        BlkGemmPipelineVer,
        ComputeTypeA,
        ComputeTypeB,
        false, // PermuteA
        false  // PermuteB
        >;

    // block-to-e-tile map
    using Block2ETileMap = GridwiseGemm::Block2CTileMap;

    // problem grid descriptors
    using AGridDesc_M_K  = decltype(MakeAGridDescriptor_M_K({}, {}));
    using BGridDesc_N_K  = decltype(MakeBGridDescriptor_N_K({}, {}));
    using DsGridDesc_M_N = remove_cvref_t<decltype(MakeDsGridDescriptor_M_N({{}}, {{}}))>;
    using EGridDesc_M_N  = decltype(MakeEGridDescriptor_M_N({}, {}));

    using DsGridDesc_G_M_N = remove_cvref_t<decltype(MakeDsGridDescriptor_G_M_N({}, {}))>;
    using EGridDesc_G_M_N  = decltype(MakeEGridDescriptor_G_M_N({}, {}));

    using DsGridDesc_MBlock_MPerBlock_NBlock_NPerBlock = remove_cvref_t<
        decltype(GridwiseGemm::MakeDsGridDescriptor_MBlock_MPerBlock_NBlock_NPerBlock(
            DsGridDesc_M_N{}, 0, 0))>;
    using EGridDesc_MBlock_MPerBlock_NBlock_NPerBlock = remove_cvref_t<
        decltype(GridwiseGemm::MakeDEGridDescriptor_MBlock_MPerBlock_NBlock_NPerBlock(
            EGridDesc_M_N{}, 0, 0))>;

    struct ComputePtrOffsetOfStridedBatch
    {
        ComputePtrOffsetOfStridedBatch(index_t batch_stride_A,
                                       index_t batch_stride_B,
                                       DsGridDesc_G_M_N ds_grid_desc_g_m_n,
                                       EGridDesc_G_M_N e_grid_desc_g_m_n)
            : batch_stride_A_(batch_stride_A),
              batch_stride_B_(batch_stride_B),
              ds_grid_desc_g_m_n_(ds_grid_desc_g_m_n),
              e_grid_desc_g_m_n_(e_grid_desc_g_m_n)
        {
        }

        __host__ __device__ constexpr long_index_t GetAPtrOffset(index_t g_idx) const
        {
            return static_cast<long_index_t>(g_idx) * batch_stride_A_;
        }

        __host__ __device__ constexpr long_index_t GetBPtrOffset(index_t g_idx) const
        {
            return static_cast<long_index_t>(g_idx) * batch_stride_B_;
        }

        __host__ __device__ constexpr auto GetDsPtrOffset(index_t g_idx) const
        {
            std::array<long_index_t, NumDTensor> ds_offset;

            static_for<0, NumDTensor, 1>{}([&](auto i) {
                ds_offset[i] = static_cast<long_index_t>(g_idx) *
                               ds_grid_desc_g_m_n_[i].CalculateOffset(make_multi_index(1, 0, 0));
            });

            return ds_offset;
        }

        __host__ __device__ constexpr long_index_t GetEPtrOffset(index_t g_idx) const
        {
            return static_cast<long_index_t>(g_idx) *
                   e_grid_desc_g_m_n_.CalculateOffset(make_multi_index(1, 0, 0));
        }

        private:
        index_t batch_stride_A_;
        index_t batch_stride_B_;
        DsGridDesc_G_M_N ds_grid_desc_g_m_n_;
        EGridDesc_G_M_N e_grid_desc_g_m_n_;
    };

    // Argument
    struct Argument : public BaseArgument
    {
        Argument(const void* p_a_grid,
                 const void* p_b_grid,
                 std::array<const void*, NumDTensor> p_ds_grid,
                 void* p_e_grid,
                 const std::vector<index_t>& a_gs_ms_ns_lengths,
                 const std::vector<index_t>& a_gs_ms_ks_strides,
                 const std::vector<index_t>& b_gs_ns_ks_lengths,
                 const std::vector<index_t>& b_gs_ns_ks_strides,
                 const std::array<std::vector<index_t>, NumDTensor>& ds_gs_ms_ns_lengths,
                 const std::array<std::vector<index_t>, NumDTensor>& ds_gs_ms_ns_strides,
                 const std::vector<index_t>& e_gs_ms_ns_lengths,
                 const std::vector<index_t>& e_gs_ms_ns_strides,
                 AElementwiseOperation a_element_op,
                 BElementwiseOperation b_element_op,
                 CDEElementwiseOperation cde_element_op)
            : p_a_grid_{static_cast<const ADataType*>(p_a_grid)},
              p_b_grid_{static_cast<const BDataType*>(p_b_grid)},
              p_ds_grid_{},
              p_e_grid_{static_cast<EDataType*>(p_e_grid)},
              KBatch(1),
              a_grid_desc_m_k_{
                  DeviceOp::MakeAGridDescriptor_M_K(a_gs_ms_ns_lengths, a_gs_ms_ks_strides)},
              b_grid_desc_n_k_{
                  DeviceOp::MakeBGridDescriptor_N_K(b_gs_ns_ks_lengths, b_gs_ns_ks_strides)},
              ds_grid_desc_m_n_{},
              e_grid_desc_m_n_{
                  DeviceOp::MakeEGridDescriptor_M_N(e_gs_ms_ns_lengths, e_gs_ms_ns_strides)},
              ds_grid_desc_g_m_n_{
                  DeviceOp::MakeDsGridDescriptor_G_M_N(ds_gs_ms_ns_lengths, ds_gs_ms_ns_strides)},
              e_grid_desc_g_m_n_{
                  DeviceOp::MakeEGridDescriptor_G_M_N(e_gs_ms_ns_lengths, e_gs_ms_ns_strides)},
              ds_grid_desc_mblock_mperblock_nblock_nperblock_{},
              e_grid_desc_mblock_mperblock_nblock_nperblock_{},
              a_element_op_{a_element_op},
              b_element_op_{b_element_op},
              cde_element_op_{cde_element_op},
              compute_ptr_offset_of_batch_{a_gs_ms_ks_strides[NumDimG - 1],
                                           b_gs_ns_ks_strides[NumDimG - 1],
                                           ds_grid_desc_g_m_n_,
                                           e_grid_desc_g_m_n_}
        {
            static_assert(NumDimG > 0 && NumDimM > 0 && NumDimN > 0 && NumDimK > 0,
                          "Invalid number of dimensions");

            // populate pointer, batch stride, desc for Ds
            static_for<0, NumDTensor, 1>{}([&](auto i) {
                using DDataType = remove_cvref_t<tuple_element_t<i.value, DsDataType>>;

                // D pointer
                p_ds_grid_(i) = static_cast<const DDataType*>(p_ds_grid[i]);

                // D desc
                ds_grid_desc_m_n_(i) = DeviceOp::MakeEGridDescriptor_M_N(ds_gs_ms_ns_lengths[i],
                                                                         ds_gs_ms_ns_strides[i]);
            });

            // Extract 2D GEMM dimensions
            G   = e_grid_desc_g_m_n_.GetLength(I0);
            M   = e_grid_desc_g_m_n_.GetLength(I1);
            N   = e_grid_desc_g_m_n_.GetLength(I2);
            K   = a_grid_desc_m_k_.GetLength(I1);
            AK0 = GridwiseGemm::CalculateAK0Padded(K);

            index_t MBlock = GridwiseGemm::CalculateMBlock(M);
            index_t NBlock = GridwiseGemm::CalculateMBlock(N);

            ds_grid_desc_mblock_mperblock_nblock_nperblock_ =
                GridwiseGemm::MakeDsGridDescriptor_MBlock_MPerBlock_NBlock_NPerBlock(
                    ds_grid_desc_m_n_, MBlock, NBlock);

            e_grid_desc_mblock_mperblock_nblock_nperblock_ =
                GridwiseGemm::MakeDEGridDescriptor_MBlock_MPerBlock_NBlock_NPerBlock(
                    e_grid_desc_m_n_, MBlock, NBlock);

            block_2_etile_map_ = GridwiseGemm::DefaultBlock2CTileMap(M, N);
        }

        void Print() const
        {
            std::cout << "A[M, K]: " << a_grid_desc_m_k_ << std::endl;
            std::cout << "B[N, K]: " << b_grid_desc_n_k_ << std::endl;
            static_for<0, NumDTensor, 1>{}(
                [&](auto i) { std::cout << "Ds[M, N]: " << ds_grid_desc_m_n_[i] << std::endl; });
            std::cout << "E[M, N]: " << e_grid_desc_m_n_ << std::endl;
        }

        //  private:
        // pointers
        const ADataType* p_a_grid_;
        const BDataType* p_b_grid_;
        typename GridwiseGemm::DsGridPointer p_ds_grid_;
        EDataType* p_e_grid_;

        index_t G, M, N, K;
        index_t KBatch; // Always 1, but included for compatability with GridwiseGemm::CheckValidity
        index_t AK0;    // Also included for compatibility

        // tensor descriptors for problem definiton
        AGridDesc_M_K a_grid_desc_m_k_;
        BGridDesc_N_K b_grid_desc_n_k_;
        DsGridDesc_M_N ds_grid_desc_m_n_;
        EGridDesc_M_N e_grid_desc_m_n_;

        DsGridDesc_G_M_N ds_grid_desc_g_m_n_;
        EGridDesc_G_M_N e_grid_desc_g_m_n_;

        // tensor descriptors for block/thread-wise copy
        // AK0_M_AK1/BK0_N_BK1 are generated in the kernel to match the transfer method used
        DsGridDesc_MBlock_MPerBlock_NBlock_NPerBlock
            ds_grid_desc_mblock_mperblock_nblock_nperblock_;
        EGridDesc_MBlock_MPerBlock_NBlock_NPerBlock e_grid_desc_mblock_mperblock_nblock_nperblock_;

        // block-to-e-tile map
        Block2ETileMap block_2_etile_map_;

        // element-wise op
        AElementwiseOperation a_element_op_;
        BElementwiseOperation b_element_op_;
        CDEElementwiseOperation cde_element_op_;

        ComputePtrOffsetOfStridedBatch compute_ptr_offset_of_batch_;
    };

    // Invoker
    struct Invoker : public BaseInvoker
    {
        using Argument = DeviceOp::Argument;

        float Run(const Argument& arg, const StreamConfig& stream_config = StreamConfig{})
        {
            if(!DeviceOp::IsSupportedArgument(arg))
            {
                throw std::runtime_error(
                    "wrong! DeviceBatchedContractionMultipleD_Wmma_CShuffle_V3 has invalid "
                    "setting");
            }

            const index_t grid_size = arg.block_2_etile_map_.CalculateGridSize(arg.M, arg.N);

            auto launch_kernel = [&](auto has_main_k_block_loop, auto tail_number) {
                constexpr bool has_main_loop = has_main_k_block_loop.value;
                constexpr auto tail_num      = tail_number.value;

                constexpr index_t minimum_occupancy = []() {
                    if constexpr(BlkGemmPipeSched == BlockGemmPipelineScheduler::Interwave)
                    {
                        return 2;
                    }
                    else if constexpr(BlkGemmPipelineVer == BlockGemmPipelineVersion::v3)
                    {
                        return (MPerBlock * NPerBlock / BlockSize <= 128) ? 2 : 1;
                    }
                    else
                    {
                        return 1;
                    }
                }();

                const auto kernel =
                    kernel_contraction_multiple_d_wmma_cshuffle_v3<DeviceOp,
                                                                   GridwiseGemm,
                                                                   has_main_loop,
                                                                   minimum_occupancy,
                                                                   tail_num>;

                return launch_and_time_kernel(
                    stream_config, kernel, dim3(grid_size, arg.G, 1), dim3(BlockSize), 0, arg);
            };

            bool HasMainKBlockLoop = GridwiseGemm::CalculateHasMainKBlockLoop(arg.K);
            TailNumber TailNum     = GridwiseGemm::CalculateKBlockLoopTailNum(arg.K);

            if constexpr(BlkGemmPipelineVer == BlockGemmPipelineVersion::v1)
            {
                if(HasMainKBlockLoop && TailNum == TailNumber::Full)
                {
                    return launch_kernel(std::integral_constant<bool, true>{},
                                         std::integral_constant<TailNumber, TailNumber::Full>{});
                }
                else if(!HasMainKBlockLoop && TailNum == TailNumber::Full)
                {
                    return launch_kernel(std::integral_constant<bool, false>{},
                                         std::integral_constant<TailNumber, TailNumber::Full>{});
                }
                else
                {
                    throw std::runtime_error(
                        "Invalid HasMainKBlockLoop and TailNum combination for pipeline V1!\n");
                }
            }
            else if constexpr(BlkGemmPipelineVer == BlockGemmPipelineVersion::v3)
            {
                if(HasMainKBlockLoop && TailNum == TailNumber::Full)
                {
                    return launch_kernel(std::integral_constant<bool, true>{},
                                         std::integral_constant<TailNumber, TailNumber::Full>{});
                }
                else if(!HasMainKBlockLoop && TailNum == TailNumber::Even)
                {
                    return launch_kernel(std::integral_constant<bool, false>{},
                                         std::integral_constant<TailNumber, TailNumber::Even>{});
                }
                else if(!HasMainKBlockLoop && TailNum == TailNumber::Odd)
                {
                    return launch_kernel(std::integral_constant<bool, false>{},
                                         std::integral_constant<TailNumber, TailNumber::Odd>{});
                }
                else
                {
                    throw std::runtime_error(
                        "Invalid HasMainKBlockLoop and TailNum combination for pipeline V3!\n");
                }
            }
            else
            {
                throw std::runtime_error("Invalid pipeline version! Only V1 and V3 supported\n");
            }
        }

        // polymorphic
        float Run(const BaseArgument* p_arg,
                  const StreamConfig& stream_config = StreamConfig{}) override
        {
            return Run(*dynamic_cast<const Argument*>(p_arg), stream_config);
        }
    };

    static bool IsSupportedArgument(const Argument& arg)
    {
        if(!(ck::is_gfx11_supported() || ck::is_gfx12_supported()))
        {
            if(ck::EnvIsEnabled(CK_ENV(CK_LOGGING)))
            {
                std::cout << "GPU Arch not supported" << std::endl;
            }
            return false;
        }

        if(ck::is_gfx12_supported() && !GridwiseGemm::CheckValidityAWaveTransfer(arg.M, arg.K))
        {
            if(ck::EnvIsEnabled(CK_ENV(CK_LOGGING)))
            {
                std::cout << "Wave Transfer not applicable for matrix A" << __FILE__ << ":"
                          << __LINE__ << ", in function: " << __func__ << std::endl;
            }
            return false;
        }

        if(ck::is_gfx12_supported() && !GridwiseGemm::CheckValidityBWaveTransfer(arg.N, arg.K))
        {
            if(ck::EnvIsEnabled(CK_ENV(CK_LOGGING)))
            {
                std::cout << "Wave Transfer not applicable for matrix B" << __FILE__ << ":"
                          << __LINE__ << ", in function: " << __func__ << std::endl;
            }
            return false;
        }

        // check vector access
        static_assert((ABlockTransferSrcVectorDim == 1 || ABlockTransferSrcVectorDim == 2) &&
                          (BBlockTransferSrcVectorDim == 1 || BBlockTransferSrcVectorDim == 2),
                      "Wrong dimension for A or B vector loads, should be 1 or 2!");

        return GridwiseGemm::CheckValidity(arg);
    }

    // polymorphic
    bool IsSupportedArgument(const BaseArgument* p_arg) override
    {
        return IsSupportedArgument(*dynamic_cast<const Argument*>(p_arg));
    }

    static auto
    MakeArgument(const void* p_a,
                 const void* p_b,
                 std::array<const void*, NumDTensor> p_ds,
                 void* p_e,
                 const std::vector<index_t>& a_gs_ms_ns_lengths,
                 const std::vector<index_t>& a_gs_ms_ks_strides,
                 const std::vector<index_t>& b_gs_ns_ks_lengths,
                 const std::vector<index_t>& b_gs_ns_ks_strides,
                 const std::array<std::vector<index_t>, NumDTensor>& ds_gs_ms_ns_lengths,
                 const std::array<std::vector<index_t>, NumDTensor>& ds_gs_ms_ns_strides,
                 const std::vector<index_t>& e_gs_ms_ns_lengths,
                 const std::vector<index_t>& e_gs_ms_ns_strides,
                 AElementwiseOperation a_element_op,
                 BElementwiseOperation b_element_op,
                 CDEElementwiseOperation cde_element_op)
    {
        return Argument{p_a,
                        p_b,
                        p_ds,
                        p_e,
                        a_gs_ms_ns_lengths,
                        a_gs_ms_ks_strides,
                        b_gs_ns_ks_lengths,
                        b_gs_ns_ks_strides,
                        ds_gs_ms_ns_lengths,
                        ds_gs_ms_ns_strides,
                        e_gs_ms_ns_lengths,
                        e_gs_ms_ns_strides,
                        a_element_op,
                        b_element_op,
                        cde_element_op};
    }

    static auto MakeInvoker() { return Invoker{}; }

    // polymorphic
    std::unique_ptr<BaseArgument>
    MakeArgumentPointer(const void* p_a,
                        const void* p_b,
                        std::array<const void*, NumDTensor> p_ds,
                        void* p_e,
                        const std::vector<index_t>& a_gs_ms_ns_lengths,
                        const std::vector<index_t>& a_gs_ms_ks_strides,
                        const std::vector<index_t>& b_gs_ns_ks_lengths,
                        const std::vector<index_t>& b_gs_ns_ks_strides,
                        const std::array<std::vector<index_t>, NumDTensor>& ds_gs_ms_ns_lengths,
                        const std::array<std::vector<index_t>, NumDTensor>& ds_gs_ms_ns_strides,
                        const std::vector<index_t>& e_gs_ms_ns_lengths,
                        const std::vector<index_t>& e_gs_ms_ns_strides,
                        AElementwiseOperation a_element_op,
                        BElementwiseOperation b_element_op,
                        CDEElementwiseOperation cde_element_op) override
    {
        return std::make_unique<Argument>(p_a,
                                          p_b,
                                          p_ds,
                                          p_e,
                                          a_gs_ms_ns_lengths,
                                          a_gs_ms_ks_strides,
                                          b_gs_ns_ks_lengths,
                                          b_gs_ns_ks_strides,
                                          ds_gs_ms_ns_lengths,
                                          ds_gs_ms_ns_strides,
                                          e_gs_ms_ns_lengths,
                                          e_gs_ms_ns_strides,
                                          a_element_op,
                                          b_element_op,
                                          cde_element_op);
    }

    // polymorphic
    std::unique_ptr<BaseInvoker> MakeInvokerPointer() override
    {
        return std::make_unique<Invoker>(Invoker{});
    }

    // polymorphic
    std::string GetTypeString() const override
    {
        auto str = std::stringstream();

        // clang-format off
        str << "DeviceBatchedContractionMultipleD_Wmma_CShuffle_V3"
            << "<"
            << NumDimG << ", "
            << NumDimM << ", "
            << NumDimN << ", "
            << NumDimK << ", "
            << BlockSize << ", "
            << MPerBlock << ", "
            << NPerBlock << ", "
            << KPerBlock << ", "
            << AK1 << ", "
            << BK1 << ", "
            << ABlockTransferSrcVectorDim << ", "
            << BBlockTransferSrcVectorDim
            << ">";
        // clang-format on

        return str.str();
    }
};

} // namespace device
} // namespace tensor_operation
} // namespace ck
