add f8 gemm multiD with both row/col wise scale (#1300)

* add f8 gemm with multiD for both row/col wise

* change compute_type to fp8

* changed tuning parameters in the example

* add rcr example
This commit is contained in:
zjing14
2024-05-28 12:04:22 -05:00
committed by GitHub
parent 5055b3bdcb
commit 80db62f08d
6 changed files with 3955 additions and 0 deletions

View File

@@ -0,0 +1,648 @@
// SPDX-License-Identifier: MIT
// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
#pragma once
#include "ck/utility/common_header.hpp"
#include "ck/tensor_description/tensor_descriptor.hpp"
#include "ck/tensor_description/tensor_descriptor_helper.hpp"
#include "ck/tensor_description/tensor_space_filling_curve.hpp"
#include "ck/utility/is_detected.hpp"
#include "ck/tensor/static_tensor.hpp"
#include "ck/tensor_operation/gpu/thread/threadwise_tensor_slice_transfer_util.hpp"
namespace ck {
// Thread-level multi-source, multi-destination tensor slice data movement
// Assume:
// 1. All sources and destinations are DynamicBuffer
// 2. Same VectorDim and ScalerPerVector for all sources and destinations
// 3. DstInMemOps are per destination tensor
// 4. ThreadTransferSrcResetCoordinateAfterRunFlags are per source tensor
// 5. ThreadTransferDstResetCoordinateAfterRunFlags are per destination tensor
// 6. Does not need to know src_descs and dst_descs at compile-time
// 7. Does not need to know src_slice_origins and dst_slice_origins at compile-time,
//
// Does following things to avoid scratch memory issue
// 1. Use StaticallyIndexedArray or vector_type instead of C array for thread buffer
// 2. Pass tensor descritpors by reference (or tuple of references)
// 3. Does not keep reference to tensor descriptor
// 4. Does not construct new tensor coordinate when call Run()
template <typename SrcDatas,
typename DstDatas,
typename SrcDescs,
typename DstDescs,
typename ElementwiseOperation,
typename DstInMemOps, // Sequence<InMemoryDataOperationEnum ...>
typename SliceLengths,
typename SrcDimAccessOrder,
typename DstDimAccessOrder,
index_t SrcVectorDim,
index_t DstVectorDim,
typename SrcScalarPerVectors,
index_t DstScalarPerVector,
typename SrcResetCoordinateAfterRunFlags, // Sequence<bool ...>
typename DstResetCoordinateAfterRunFlags, // Sequence<bool ...>
index_t NumThreadScratch = 1>
struct ThreadwiseTensorSliceTransfer_v7r3
{
static constexpr auto I0 = Number<0>{};
static constexpr auto SrcScalarPerVector = SrcScalarPerVectors{}[I0];
static constexpr index_t nDim = SliceLengths::Size();
static constexpr index_t nSrc = SrcDescs::Size();
static constexpr index_t nDst = DstDescs::Size();
using Index = MultiIndex<nDim>;
// return a tuple of coordiantes for a tuple of tensor
template <typename Descs,
typename Indices,
enable_if_t<Descs::Size() == Indices::Size(), bool> = false>
static constexpr auto MakeCoordinates(const Descs& descs, const Indices& indices)
{
return generate_tuple([&](auto i) { return make_tensor_coordinate(descs[i], indices[i]); },
Number<Descs::Size()>{});
}
using SrcCoords = decltype(MakeCoordinates(SrcDescs{}, StaticallyIndexedArray<Index, nSrc>{}));
using DstCoords = decltype(MakeCoordinates(DstDescs{}, StaticallyIndexedArray<Index, nDst>{}));
// scalar per access on each dim
// FIXME: don't use lambda_scalar_per_access
static constexpr auto src_scalar_per_access = generate_sequence(
detail::lambda_scalar_per_access<SrcVectorDim, SrcScalarPerVector>{}, Number<nDim>{});
static constexpr auto dst_scalar_per_access = generate_sequence(
detail::lambda_scalar_per_access<DstVectorDim, DstScalarPerVector>{}, Number<nDim>{});
using SrcSpaceFillingCurve = SpaceFillingCurve<SliceLengths,
SrcDimAccessOrder,
remove_cv_t<decltype(src_scalar_per_access)>,
false>;
using DstSpaceFillingCurve = SpaceFillingCurve<SliceLengths,
DstDimAccessOrder,
remove_cv_t<decltype(dst_scalar_per_access)>,
false>;
__device__ constexpr ThreadwiseTensorSliceTransfer_v7r3(
const SrcDescs& src_descs,
const StaticallyIndexedArray<Index, nSrc>& src_slice_origins,
const DstDescs& dst_descs,
const StaticallyIndexedArray<Index, nDst>& dst_slice_origins,
const ElementwiseOperation& element_op)
: src_coords_(MakeCoordinates(src_descs, src_slice_origins)),
dst_coords_(MakeCoordinates(dst_descs, dst_slice_origins)),
element_op_(element_op)
{
static_assert(SliceLengths::At(Number<SrcVectorDim>{}) % SrcScalarPerVector == 0,
"wrong! cannot evenly divide");
static_assert(SliceLengths::At(Number<DstVectorDim>{}) % DstScalarPerVector == 0,
"wrong! cannot evenly divide");
}
template <typename Indices, enable_if_t<SrcDescs::Size() == Indices::Size(), bool> = false>
__device__ void SetSrcSliceOrigins(const SrcDescs& src_descs,
const Indices& src_slice_origin_idxs)
{
static_for<0, nSrc, 1>{}([&](auto i) {
src_coords_(i) = make_tensor_coordinate(src_descs[i], src_slice_origin_idxs[i]);
});
}
template <typename Indices, enable_if_t<DstDescs::Size() == Indices::Size(), bool> = false>
__device__ void SetDstSliceOrigins(const DstDescs& dst_descs,
const Indices& dst_slice_origin_idxs)
{
static_for<0, nDst, 1>{}([&](auto i) {
dst_coords_(i) = make_tensor_coordinate(dst_descs[i], dst_slice_origin_idxs[i]);
});
}
template <typename DataTypes, index_t ScalarPerVector>
__device__ static auto generate_vectors()
{
auto data_types = DataTypes{};
constexpr index_t num = data_types.Size();
return generate_tuple(
[&](auto i) {
using DataType = remove_cvref_t<decltype(data_types[i])>;
return vector_type_maker_t<DataType, ScalarPerVector>{};
},
Number<num>{});
}
// SrcDescs: Tuple<const SrcDesc0&, const SrcDesc1&, ...>
// SrcBuffers: Tuple<const SrcBuffer0&, const SrcBuffer1&, ...>
template <typename SrcBuffers,
index_t ThreadScratchId = 0,
enable_if_t<SrcDescs::Size() == SrcBuffers::Size(), bool> = false>
__device__ void RunRead(const SrcDescs& src_descs,
const SrcBuffers& src_bufs,
Number<ThreadScratchId> thread_scratch_id = Number<ThreadScratchId>{})
{
// loop over space-filling curve
static_for<0, src_num_access, 1>{}([&](auto iAccess) {
auto src_vectors = generate_vectors<SrcDatas, SrcScalarPerVector>();
auto elm_vectors = generate_vectors<DstDatas, SrcScalarPerVector>();
bool oob_val = true;
// copy data from src_bufs into src_vectors
static_for<0, nSrc, 1>{}([&](auto i) {
using src_vector_t = typename remove_cvref_t<decltype(src_vectors[i])>::type;
const bool is_src_valid =
coordinate_has_valid_offset_assuming_visible_index_is_valid(src_descs[i],
src_coords_[i]);
oob_val = oob_val & is_src_valid;
if constexpr(SrcScalarPerVectors{}[i] == 1)
{
auto data_types = SrcDatas{};
using DataType = remove_cvref_t<decltype(data_types[i])>;
const auto tmp =
src_bufs[i].template Get<DataType>(src_coords_[i].GetOffset(), true);
static_for<0, SrcScalarPerVector, 1>{}(
[&](auto j) { src_vectors(i).template AsType<DataType>()(j) = tmp; });
}
else
{
src_vectors(i).template AsType<src_vector_t>()(I0) =
src_bufs[i].template Get<src_vector_t>(src_coords_[i].GetOffset(), true);
}
});
constexpr auto get_elem_op_vec_len = []() {
if constexpr(is_detected<is_pack8_invocable_t, decltype(element_op_)>::value)
{
if constexpr(decltype(element_op_)::is_pack8_invocable)
return math::min(8, SrcScalarPerVector);
}
if constexpr(is_detected<is_pack4_invocable_t, decltype(element_op_)>::value)
{
if constexpr(decltype(element_op_)::is_pack4_invocable)
return math::min(4, SrcScalarPerVector);
}
if constexpr(is_detected<is_pack2_invocable_t, decltype(element_op_)>::value)
{
if constexpr(decltype(element_op_)::is_pack2_invocable)
return math::min(2, SrcScalarPerVector);
}
return 1;
};
constexpr index_t elem_op_vec_len = get_elem_op_vec_len();
// apply pointwise function
static_for<0, SrcScalarPerVector / elem_op_vec_len, 1>{}([&](auto i) {
// get reference to src data
const auto src_data_refs = generate_tie(
// return type should be lvalue
[&](auto iSrc) -> const auto& {
using SrcData = remove_cvref_t<tuple_element_t<iSrc.value, SrcDatas>>;
using elem_op_vec_t = typename vector_type<SrcData, elem_op_vec_len>::type;
return src_vectors[iSrc].template AsType<elem_op_vec_t>()[i];
},
Number<nSrc>{});
// get reference to dst data
auto dst_data_refs = generate_tie(
// return type should be lvalue
[&](auto iDst) -> auto& {
using DstData = remove_cvref_t<tuple_element_t<iDst.value, DstDatas>>;
using elem_op_vec_t = typename vector_type<DstData, elem_op_vec_len>::type;
return elm_vectors(iDst).template AsType<elem_op_vec_t>()(i);
},
Number<nDst>{});
// apply pointwise function
// pointwise function signature:
// element_op_(dst_data_refs[I0],
// dst_data_refs[I1],
// ...,
// src_data_refs[I0],
// src_data_refs[I1],
// ...)
unpack2(element_op_, dst_data_refs, src_data_refs);
});
elm_vectors_tuple_(thread_scratch_id)(iAccess) = elm_vectors;
oob_vectors_tuple_(thread_scratch_id)(iAccess) = oob_val;
// move coordinate
if constexpr(iAccess.value != src_num_access - 1)
{
constexpr auto forward_step = SrcSpaceFillingCurve::GetForwardStep(iAccess);
static_for<0, nSrc, 1>{}([&](auto i) {
move_tensor_coordinate(src_descs[i],
src_coords_(i),
make_tensor_coordinate_step(src_descs[i], forward_step));
});
}
});
// move coordinate back to slice origin (or not)
static_for<0, nSrc, 1>{}([&](auto i) {
if constexpr(SrcResetCoordinateAfterRunFlags::At(i))
{
const auto src_reset_step =
make_tensor_coordinate_step(src_descs[i], GetSrcCoordinateResetStep());
move_tensor_coordinate(src_descs[i], src_coords_(i), src_reset_step);
}
});
}
#if 1
template <index_t ThreadScratchId = 0>
__device__ void OOBCheck(Number<ThreadScratchId> thread_scratch_id = Number<ThreadScratchId>{})
{
// loop over space-filling curve
static_for<0, src_num_access, 1>{}([&](auto iAccess) {
auto elm_vectors = elm_vectors_tuple_[thread_scratch_id][iAccess];
auto oob_val = oob_vectors_tuple_[thread_scratch_id][iAccess];
static_for<0, nDst, 1>{}([&](auto i) {
using elm_vector_t = typename remove_cvref_t<decltype(elm_vectors[i])>::type;
elm_vectors(i).template AsType<elm_vector_t>()(I0) =
oob_val ? elm_vectors(i).template AsType<elm_vector_t>()[I0] : elm_vector_t{0};
});
elm_vectors_tuple_(thread_scratch_id)(iAccess) = elm_vectors;
});
}
#endif
template <index_t ThreadScratchId = 0>
__device__ void
TransposeFromElmToDst(Number<ThreadScratchId> thread_scratch_id = Number<ThreadScratchId>{})
{
using DstData = remove_cvref_t<decltype(DstDatas{}[I0])>;
using ElmThreadScratch =
StaticTensorTupleOfVectorBuffer<AddressSpaceEnum::Vgpr,
DstData,
SrcScalarPerVector,
decltype(GetSrcThreadScratchDescriptor()),
true>;
using DstThreadScratch =
StaticTensorTupleOfVectorBuffer<AddressSpaceEnum::Vgpr,
DstData,
DstScalarPerVector,
decltype(GetDstThreadScratchDescriptor()),
true>;
ElmThreadScratch elm_thread_scratch_;
DstThreadScratch dst_thread_scratch_;
elm_thread_scratch_.data_ =
bit_cast<decltype(elm_thread_scratch_.data_)>(elm_vectors_tuple_[thread_scratch_id]);
if constexpr(SrcVectorDim != DstVectorDim &&
((is_same<half_t, remove_cvref_t<DstData>>::value &&
SrcScalarPerVector % 2 == 0 && DstScalarPerVector % 2 == 0) ||
(is_same<f8_t, remove_cvref_t<DstData>>::value &&
SrcScalarPerVector % 4 == 0 && DstScalarPerVector % 4 == 0) ||
(is_same<int8_t, remove_cvref_t<DstData>>::value &&
SrcScalarPerVector % 4 == 0 && DstScalarPerVector % 4 == 0)))
{
// each transpose does
// DstScalarPerVector # of src vectors in src_thread_scratch_
// SrcScalarPerVector # of dst vectors in dst_thread_scratch_
constexpr index_t num_src_vector = Number<DstScalarPerVector>{};
constexpr index_t num_dst_vector = Number<SrcScalarPerVector>{};
// Assume SrcVectorDim is not the same as DstVectorDim, so we do transpose
// TODO: make this logic generic for all scenario
constexpr auto src_scalar_step_in_vector = generate_sequence(
detail::lambda_scalar_step_in_vector<SrcVectorDim>{}, Number<nDim>{});
constexpr auto dst_scalar_step_in_vector = generate_sequence(
detail::lambda_scalar_step_in_vector<DstVectorDim>{}, Number<nDim>{});
constexpr auto scalar_per_access = generate_sequence(
detail::lambda_scalar_per_access_for_src_and_dst<SrcVectorDim,
SrcScalarPerVector,
DstVectorDim,
DstScalarPerVector>{},
Number<nDim>{});
constexpr auto access_lengths = SliceLengths{} / scalar_per_access;
static_ford<decltype(access_lengths)>{}([&](auto access_idx) {
constexpr auto data_idx = access_idx * scalar_per_access;
constexpr auto data_idx_seq = generate_sequence_v2(
[&](auto i) { return Number<data_idx[i]>{}; }, Number<nDim>{});
using src_vector_t = vector_type_maker_t<DstData, SrcScalarPerVector>;
using dst_vector_t = vector_type_maker_t<DstData, DstScalarPerVector>;
// get DstScalarPerVector # of read-only references to src vectors from
// src_thread_scratch_
const auto src_vector_refs = generate_tie(
[&](auto i) -> const src_vector_t& {
// i increment corresponds to movement in DstVectorDim
return elm_thread_scratch_.GetVectorTypeReference(
data_idx_seq + i * dst_scalar_step_in_vector);
},
Number<num_src_vector>{});
// get SrcScalarPerVector # of references to dst vectors from
// dst_thread_scratch_
auto dst_vector_refs = generate_tie(
[&](auto i) -> dst_vector_t& {
// i increment corresponds to movement in SrcVectorDim
return dst_thread_scratch_.GetVectorTypeReference(
data_idx_seq + i * src_scalar_step_in_vector);
},
Number<num_dst_vector>{});
// do data transpose
transpose_vectors<DstData, DstScalarPerVector, SrcScalarPerVector>{}(
src_vector_refs, dst_vector_refs);
});
}
else
{
static_ford<SliceLengths>{}(
[&](auto idx) { dst_thread_scratch_(idx) = elm_thread_scratch_[idx]; });
}
dst_vectors_tuple_(thread_scratch_id) = bit_cast<DstVectorTuple>(dst_thread_scratch_.data_);
}
// DstDescs: Tuple<const DstDesc0&, const DstDesc1&, ...>
// DstBuffers: Tuple<const DstBuffer0&, const DstBuffer1&, ...>
template <typename DstBuffers,
index_t ThreadScratchId = 0,
enable_if_t<DstDescs::Size() == 1 && DstBuffers::Size() == 1, bool> = false>
__device__ void RunWrite(const DstDescs& dst_descs,
DstBuffers dst_bufs,
Number<ThreadScratchId> thread_scratch_id = Number<ThreadScratchId>{})
{
OOBCheck(thread_scratch_id);
TransposeFromElmToDst(thread_scratch_id);
// loop over space-filling curve
static_for<0, dst_num_access, 1>{}([&](auto iAccess) {
auto dst_vectors = dst_vectors_tuple_[thread_scratch_id][iAccess];
// copy data from buf_vectors into dst_bufs
static_for<0, nDst, 1>{}([&](auto i) {
using dst_vector_t = typename remove_cvref_t<decltype(dst_vectors[i])>::type;
const bool is_dst_valid =
coordinate_has_valid_offset_assuming_visible_index_is_valid(dst_descs[i],
dst_coords_[i]);
constexpr InMemoryDataOperationEnum DstInMemOp =
static_cast<InMemoryDataOperationEnum>(DstInMemOps::At(i.value));
dst_bufs(i).template Update<DstInMemOp, dst_vector_t>(
dst_coords_[i].GetOffset(),
is_dst_valid,
dst_vectors[i].template AsType<dst_vector_t>()[I0]);
});
// move coordinate
if constexpr(iAccess.value != dst_num_access - 1)
{
constexpr auto forward_step = DstSpaceFillingCurve::GetForwardStep(iAccess);
static_for<0, nDst, 1>{}([&](auto i) {
move_tensor_coordinate(dst_descs[i],
dst_coords_(i),
make_tensor_coordinate_step(dst_descs[i], forward_step));
});
}
});
static_for<0, nDst, 1>{}([&](auto i) {
if constexpr(DstResetCoordinateAfterRunFlags::At(i))
{
const auto dst_reset_step =
make_tensor_coordinate_step(dst_descs[i], GetDstCoordinateResetStep());
move_tensor_coordinate(dst_descs[i], dst_coords_(i), dst_reset_step);
}
});
}
// SrcDescs: Tuple<const SrcDesc0&, const SrcDesc1&, ...>
// SrcBuffers: Tuple<const SrcBuffer0&, const SrcBuffer1&, ...>
// DstDescs: Tuple<const DstDesc0&, const DstDesc1&, ...>
// DstBuffers: Tuple<const DstBuffer0&, const DstBuffer1&, ...>
template <typename SrcBuffers,
typename DstBuffers,
enable_if_t<SrcDescs::Size() == SrcBuffers::Size() &&
DstDescs::Size() == DstBuffers::Size(),
bool> = false>
__device__ void Run(const SrcDescs& src_descs,
const SrcBuffers& src_bufs,
const DstDescs& dst_descs,
DstBuffers dst_bufs)
{
RunRead(src_descs, src_bufs);
RunWrite(dst_descs, dst_bufs);
}
__device__ static constexpr auto GetSrcCoordinateResetStep()
{
if constexpr(src_num_access == 0)
{
return typename SrcSpaceFillingCurve::Index{};
}
else
{
return SrcSpaceFillingCurve::GetStepBetween(Number<src_num_access - 1>{}, Number<0>{});
}
}
__device__ static constexpr auto GetDstCoordinateResetStep()
{
if constexpr(dst_num_access == 0)
{
return typename DstSpaceFillingCurve::Index{};
}
else
{
return DstSpaceFillingCurve::GetStepBetween(Number<dst_num_access - 1>{}, Number<0>{});
}
}
__device__ static constexpr auto GetSrcThreadScratchDescriptor()
{
// constexpr auto src_scalar_per_access = generate_sequence(
// detail::lambda_scalar_per_access<SrcVectorDim, SrcScalarPerVector>{},
// Number<nDim>{});
constexpr auto src_access_lengths = SliceLengths{} / src_scalar_per_access;
constexpr auto src_access_lengths_and_vector_length = container_push_back(
sequence_to_tuple_of_number(src_access_lengths), Number<SrcScalarPerVector>{});
// 1st stage of transforms
constexpr auto desc0 =
make_naive_tensor_descriptor_packed(src_access_lengths_and_vector_length);
// 2nd stage of transforms
constexpr auto transforms = generate_tuple(
[&](auto i) {
if constexpr(i == SrcVectorDim)
{
return make_merge_transform_v3_division_mod(
make_tuple(src_access_lengths_and_vector_length[i],
src_access_lengths_and_vector_length[Number<nDim>{}]));
}
else
{
return make_pass_through_transform(src_access_lengths_and_vector_length[i]);
}
},
Number<nDim>{});
constexpr auto low_dim_idss = generate_tuple(
[&](auto i) {
if constexpr(i == SrcVectorDim)
{
return Sequence<i.value, nDim>{};
}
else
{
return Sequence<i.value>{};
}
},
Number<nDim>{});
constexpr auto up_dim_idss =
generate_tuple([&](auto i) { return Sequence<i.value>{}; }, Number<nDim>{});
return transform_tensor_descriptor(desc0, transforms, low_dim_idss, up_dim_idss);
}
__device__ static constexpr auto GetDstThreadScratchDescriptor()
{
// 1st stage of transforms
// constexpr auto dst_scalar_per_access = generate_sequence(
// detail::lambda_scalar_per_access<DstVectorDim, DstScalarPerVector>{},
// Number<nDim>{});
constexpr auto dst_access_lengths = SliceLengths{} / dst_scalar_per_access;
constexpr auto dst_access_lengths_and_vector_length = container_push_back(
sequence_to_tuple_of_number(dst_access_lengths), Number<DstScalarPerVector>{});
constexpr auto desc0 =
make_naive_tensor_descriptor_packed(dst_access_lengths_and_vector_length);
// 2nd stage of transforms
constexpr auto transforms = generate_tuple(
[&](auto i) {
if constexpr(i == DstVectorDim)
{
return make_merge_transform_v3_division_mod(
make_tuple(dst_access_lengths_and_vector_length[i],
dst_access_lengths_and_vector_length[Number<nDim>{}]));
}
else
{
return make_pass_through_transform(dst_access_lengths_and_vector_length[i]);
}
},
Number<nDim>{});
constexpr auto low_dim_idss = generate_tuple(
[&](auto i) {
if constexpr(i == DstVectorDim)
{
return Sequence<i.value, nDim>{};
}
else
{
return Sequence<i.value>{};
}
},
Number<nDim>{});
constexpr auto up_dim_idss =
generate_tuple([&](auto i) { return Sequence<i.value>{}; }, Number<nDim>{});
return transform_tensor_descriptor(desc0, transforms, low_dim_idss, up_dim_idss);
}
// src_slice_origin_step_idx need to be known at compile-time, for performance reason
template <index_t ISrc>
__device__ void MoveSrcSliceWindow(const SrcDescs& src_descs,
Number<ISrc> iSrc,
const Index& src_slice_origin_step_idx)
{
// if src coord was not reset by RunRead(), then need to adjust the step here
const auto adjusted_step_idx =
SrcResetCoordinateAfterRunFlags::At(iSrc)
? src_slice_origin_step_idx
: src_slice_origin_step_idx + GetSrcCoordinateResetStep();
// is it OK to construct a new step every time?
const auto adjusted_step = make_tensor_coordinate_step(src_descs[iSrc], adjusted_step_idx);
move_tensor_coordinate(src_descs[iSrc], src_coords_(iSrc), adjusted_step);
}
// dst_slice_origin_step_idx need to be known at compile-time, for performance reason
template <index_t IDst>
__device__ void MoveDstSliceWindow(const DstDescs& dst_descs,
Number<IDst> iDst,
const Index& dst_slice_origin_step_idx)
{
// if dst coord was not reset by Run(), then need to adjust the step here
const auto adjusted_step_idx =
DstResetCoordinateAfterRunFlags::At(iDst)
? dst_slice_origin_step_idx
: dst_slice_origin_step_idx + GetDstCoordinateResetStep();
// is it OK to construct a new step every time?
const auto adjusted_step = make_tensor_coordinate_step(dst_descs[iDst], adjusted_step_idx);
move_tensor_coordinate(dst_descs[iDst], dst_coords_(iDst), adjusted_step);
}
private:
using SrcVectorsType = decltype(generate_vectors<SrcDatas, SrcScalarPerVector>());
using ElmVectorsType = decltype(generate_vectors<DstDatas, SrcScalarPerVector>());
using DstVectorsType = decltype(generate_vectors<DstDatas, DstScalarPerVector>());
static constexpr auto src_num_access = SrcSpaceFillingCurve::GetNumOfAccess();
static constexpr auto dst_num_access = DstSpaceFillingCurve::GetNumOfAccess();
using ElmVectorTuple = StaticallyIndexedArray<ElmVectorsType, src_num_access>;
using DstVectorTuple = StaticallyIndexedArray<DstVectorsType, dst_num_access>;
StaticallyIndexedArray<ElmVectorTuple, NumThreadScratch> elm_vectors_tuple_;
StaticallyIndexedArray<DstVectorTuple, NumThreadScratch> dst_vectors_tuple_;
using OOBVectorTuple = StaticallyIndexedArray<bool, src_num_access>;
StaticallyIndexedArray<OOBVectorTuple, NumThreadScratch> oob_vectors_tuple_;
SrcCoords src_coords_;
DstCoords dst_coords_;
const ElementwiseOperation element_op_;
};
} // namespace ck