877bdcace6
CUTLASS 1.3 Release - Efficient GEMM kernel targeting Volta Tensor Cores via mma.sync instruction added in CUDA 10.1.
227 lines
7.0 KiB
C++
227 lines
7.0 KiB
C++
/***************************************************************************************************
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* Copyright (c) 2017-2019, NVIDIA CORPORATION. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are permitted
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* provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* * Neither the name of the NVIDIA CORPORATION nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TOR (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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**************************************************************************************************/
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/*! \file
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\brief Defines a fragment based on a Shape<> template.
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*/
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#pragma once
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#include "cutlass/shape.h"
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#include "cutlass/fragment.h"
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#include "cutlass/tensor_ref.h"
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#include "cutlass/tensor_view.h"
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#include "cutlass/zip_tensor_ref.h"
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namespace cutlass {
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// Class for storing a tile in memory and accessing it through a tensor ref
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template <typename Scalar_, typename Shape_>
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struct TileAllocation {
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//
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// Type definitions
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//
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/// Scalar element
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typedef Scalar_ Scalar;
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/// The actual storage (may differ from the scalar type)
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typedef typename StorageType<int(sizeof(Scalar))>::Type Storage;
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/// Size of the allocation in units of scalars
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typedef Shape_ Shape;
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/// Strides
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typedef typename ShapeStrides<Shape, 1>::Shape Strides;
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/// Defines the tensor reference for this allocation
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typedef TensorRef<Scalar const, 4> ConstTensorRef;
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/// Defines the tensor reference for this allocation
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typedef TensorRef<Scalar, 4> TensorRef;
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/// View of memory
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typedef TensorView<Scalar const, 4> ConstTensorView;
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/// View of memory
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typedef TensorView<Scalar, 4> TensorView;
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//
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// Data members
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//
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/// Storage
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Storage storage[Shape::kD][Shape::kH][Shape::kW][Shape::kC];
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//
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// Methods
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//
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/// Returns a pointer to the raw data
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CUTLASS_DEVICE
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Scalar *data() { return reinterpret_cast<Scalar *>(&storage[0][0][0][0]); }
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/// Returns a const pointer to the raw data
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CUTLASS_DEVICE
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Scalar const *data() const { return reinterpret_cast<Scalar const *>(&storage[0][0][0][0]); }
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/// Returns a TensorRef object pointing to the data
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CUTLASS_DEVICE
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TensorRef reference() {
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return TensorRef(data(), make_Coord(Strides::kD, Strides::kH, Strides::kW, Strides::kC));
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}
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/// Returns a TensorRef object pointing to the data
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CUTLASS_DEVICE
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ConstTensorRef reference() const {
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return ConstTensorRef(data(), make_Coord(Strides::kD, Strides::kH, Strides::kW, Strides::kC));
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}
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/// Returns a TensorView object pointing to the data
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CUTLASS_DEVICE
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TensorView view() {
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return TensorView(
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data(),
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make_Coord(Strides::kD, Strides::kH, Strides::kW, Strides::kC),
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make_Coord(Shape::kD, Shape::kH, Shape::kW, Shape::kC));
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}
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/// Returns a TensorView object pointing to the data
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CUTLASS_DEVICE
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ConstTensorView view() const {
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return TensorView(
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data(),
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make_Coord(Strides::kD, Strides::kH, Strides::kW, Strides::kC),
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make_Coord(Shape::kD, Shape::kH, Shape::kW, Shape::kC));
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// Manages a pair of tile allocations as if they are one allocation
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template <typename First_, typename Second_>
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struct ZipTileAllocation {
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//
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// Type definitions
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//
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/// First tensor allocation
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typedef First_ First;
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/// Second tensor allocation
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typedef Second_ Second;
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/// Defines the tensor reference for this allocation
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typedef ZipTensorRef<typename First::TensorRef, typename Second::TensorRef> TensorRef;
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/// Defines the tensor reference for this allocation
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typedef ZipTensorRef<typename First::ConstTensorRef, typename Second::ConstTensorRef>
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ConstTensorRef;
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//
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// Data members
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//
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/// First tensor allocation
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First first;
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/// Second tensor allocation
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Second second;
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//
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// Methods
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//
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/// Returns a TensorRef object pointing to the data
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CUTLASS_DEVICE
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TensorRef reference() { return TensorRef(first.reference(), second.reference()); }
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/// Returns a TensorRef object pointing to the data
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CUTLASS_DEVICE
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ConstTensorRef reference() const { return ConstTensorRef(first.reference(), second.reference()); }
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// Manages a pair of tile allocations as if they are one allocation
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template <typename First_, typename Second_, typename Third_>
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struct ZipTileAllocationTriple {
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//
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// Type definitions
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//
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/// First tensor allocation
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typedef First_ First;
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/// Second tensor allocation
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typedef Second_ Second;
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/// meta data tensor allocation
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typedef Third_ Third;
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/// Defines the tensor reference for this allocation
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typedef Zip3TensorRef<typename First::TensorRef,
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typename Second::TensorRef,
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typename Third::TensorRef> TensorRef;
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/// Defines the tensor reference for this allocation
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typedef Zip3TensorRef<typename First::ConstTensorRef,
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typename Second::ConstTensorRef,
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typename Third::ConstTensorRef>
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ConstTensorRef;
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//
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// Data members
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//
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/// First tensor allocation
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First first;
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/// Second tensor allocation
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Second second;
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/// meta data tensor
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Third third;
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//
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// Methods
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//
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/// Returns a TensorRef object pointing to the data
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CUTLASS_DEVICE
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TensorRef reference() {
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return TensorRef(first.reference(), second.reference(), third.reference());
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}
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/// Returns a TensorRef object pointing to the data
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CUTLASS_DEVICE
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ConstTensorRef reference() const {
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return ConstTensorRef(first.reference(), second.reference(), third.reference());
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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} // namespace cutlass
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