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#pragma once
// clang-format will break include orders
// clang-format off
#include "cutlass/cutlass.h"
#include "cute/tensor.hpp"
#include "cute/atom/mma_atom.hpp"
#include "cutlass/numeric_types.h"
#include "cutlass/gemm/device/gemm_universal_adapter.h"
#include "cutlass/gemm/kernel/gemm_universal.hpp"
#include "cutlass/epilogue/collective/collective_builder.hpp"
#include "cutlass/gemm/collective/collective_builder.hpp"
#include "core/math.hpp"
#include "cutlass_extensions/common.hpp"
// clang-format on
/*
Epilogues defined in,
csrc/cutlass_extensions/epilogue/scaled_mm_epilogues_c3x.hpp,
must contain a public type named EVTCompute of type Sm90EVT, as well as a
static prepare_args function that constructs an EVTCompute::Arguments struct.
*/
using namespace cute;
namespace vllm {
template <typename ElementAB_, typename ElementD_,
template <typename, typename, typename> typename Epilogue_,
typename TileShape, typename ClusterShape, typename KernelSchedule,
typename EpilogueSchedule>
struct cutlass_3x_gemm {
using ElementAB = ElementAB_;
using ElementD = ElementD_;
using ElementAcc =
typename std::conditional<std::is_same_v<ElementAB, int8_t>, int32_t,
float>::type;
using Epilogue = Epilogue_<ElementAcc, ElementD, TileShape>;
using StrideD = Stride<int64_t, Int<1>, Int<0>>;
using ElementC = void;
using StrideC = StrideD;
using EVTCompute = typename Epilogue::EVTCompute;
// These are the minimum alignments needed for the kernels to compile
static constexpr int AlignmentAB =
128 / cutlass::sizeof_bits<ElementAB>::value;
static constexpr int AlignmentCD = 4;
using CollectiveEpilogue =
typename cutlass::epilogue::collective::CollectiveBuilder<
cutlass::arch::Sm90, cutlass::arch::OpClassTensorOp, TileShape,
ClusterShape, cutlass::epilogue::collective::EpilogueTileAuto,
ElementAcc, float, ElementC, StrideC, AlignmentCD, ElementD, StrideD,
AlignmentCD, EpilogueSchedule, EVTCompute>::CollectiveOp;
static constexpr size_t CEStorageSize =
sizeof(typename CollectiveEpilogue::SharedStorage);
using Stages = typename cutlass::gemm::collective::StageCountAutoCarveout<
static_cast<int>(CEStorageSize)>;
// clang-format off
using CollectiveMainloop =
typename cutlass::gemm::collective::CollectiveBuilder<
cutlass::arch::Sm90, cutlass::arch::OpClassTensorOp,
ElementAB, cutlass::layout::RowMajor, AlignmentAB,
ElementAB, cutlass::layout::ColumnMajor, AlignmentAB,
ElementAcc, TileShape, ClusterShape,
Stages,
KernelSchedule>::CollectiveOp;
// clang-format on
using KernelType = enable_sm90_or_later<cutlass::gemm::kernel::GemmUniversal<
cute::Shape<int, int, int, int>, CollectiveMainloop, CollectiveEpilogue,
cutlass::gemm::PersistentScheduler>>;
struct GemmKernel : public KernelType {};
};
template <typename ElementAB_, typename ElementD_,
template <typename, typename, typename> typename Epilogue_,
typename TileShape, typename ClusterShape, typename KernelSchedule,
typename EpilogueSchedule>
struct cutlass_3x_gemm_sm100 {
using ElementAB = ElementAB_;
using LayoutA = cutlass::layout::RowMajor;
static constexpr int AlignmentA =
128 / cutlass::sizeof_bits<ElementAB>::value;
using LayoutB = cutlass::layout::ColumnMajor;
static constexpr int AlignmentB =
128 / cutlass::sizeof_bits<ElementAB>::value;
using ElementC = void;
using LayoutC = cutlass::layout::RowMajor;
static constexpr int AlignmentC =
128 / cutlass::sizeof_bits<ElementD_>::value;
using ElementD = ElementD_;
using LayoutD = cutlass::layout::RowMajor;
static constexpr int AlignmentD = AlignmentC;
using ElementAcc =
typename std::conditional<std::is_same_v<ElementAB, int8_t>, int32_t,
float>::type;
using Epilogue = Epilogue_<ElementAcc, ElementD, TileShape>;
// MMA type
using ElementAccumulator = float;
// Epilogue types
using ElementBias = cutlass::half_t;
using ElementCompute = float;
using ElementAux = ElementD;
using LayoutAux = LayoutD;
using ElementAmax = float;
using EVTCompute = typename Epilogue::EVTCompute;
using CollectiveEpilogue =
typename cutlass::epilogue::collective::CollectiveBuilder<
cutlass::arch::Sm100, cutlass::arch::OpClassTensorOp, TileShape,
ClusterShape, cutlass::epilogue::collective::EpilogueTileAuto,
ElementAccumulator, ElementCompute, ElementC, LayoutC, AlignmentC,
ElementD, LayoutD, AlignmentD, EpilogueSchedule,
EVTCompute>::CollectiveOp;
using CollectiveMainloop =
typename cutlass::gemm::collective::CollectiveBuilder<
cutlass::arch::Sm100, cutlass::arch::OpClassTensorOp, ElementAB,
LayoutA, AlignmentA, ElementAB, LayoutB, AlignmentB,
ElementAccumulator, TileShape, ClusterShape,
cutlass::gemm::collective::StageCountAutoCarveout<static_cast<int>(
sizeof(typename CollectiveEpilogue::SharedStorage))>,
KernelSchedule>::CollectiveOp;
using GemmKernel = cutlass::gemm::kernel::GemmUniversal<
Shape<int, int, int, int>, CollectiveMainloop, CollectiveEpilogue, void>;
};
} // namespace vllm
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