877bdcace6
CUTLASS 1.3 Release - Efficient GEMM kernel targeting Volta Tensor Cores via mma.sync instruction added in CUDA 10.1.
426 lines
16 KiB
C++
426 lines
16 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 abstractions for efficiently loading and storing vectors to memory.
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*/
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#pragma once
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#include "cutlass/vector.h"
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namespace cutlass {
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* @brief Enum to specify which memory space data resides in.
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*/
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struct MemorySpace {
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enum Kind {
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kGeneric, // Data accessed through pointer dereferencing
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kShared, // Data resides in shared memory
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kGlobal // Data resides in global memory
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};
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};
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/// Specifies whether iterator storage fragment consists of Scalar values or WMMA matrix
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struct FragmentElementType {
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enum Kind { kScalar, kWmmaMatrix };
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <typename Scalar_,
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int kAccessSize,
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MemorySpace::Kind Memory_,
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FragmentElementType::Kind kFragmentElementType = FragmentElementType::kScalar,
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typename FragmentElement_ = Scalar_,
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int kStride = 1,
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size_t size = (sizeof(Scalar_) * kAccessSize)>
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struct Load {
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/// The output type.
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typedef typename Vectorize<Scalar_, kAccessSize>::Type AccessType;
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/// The load function.
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static CUTLASS_HOST_DEVICE void load(AccessType& dst, Scalar_ const* pointer, int offset) {
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dst = *reinterpret_cast<AccessType const*>(pointer + offset);
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}
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/// The clear function.
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static CUTLASS_HOST_DEVICE void clear(AccessType& dst) {
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dst = 0;
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// Partial specialization for 16b loads
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template <typename Scalar_, int kAccessSize, MemorySpace::Kind Memory_>
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struct Load<Scalar_, kAccessSize, Memory_, FragmentElementType::kScalar, Scalar_, 1, 2> {
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/// The output type.
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typedef typename Vectorize<Scalar_, kAccessSize>::Type AccessType;
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/// The load function.
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static CUTLASS_HOST_DEVICE void load(AccessType& dst, Scalar_ const* pointer, int offset) {
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reinterpret_cast<uint16_t&>(dst) = reinterpret_cast<uint16_t const*>(&pointer[offset])[0];
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}
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/// The clear function.
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static CUTLASS_HOST_DEVICE void clear(AccessType& dst) {
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dst = uint16_t(0);
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <typename Scalar_, int kAccessSize, MemorySpace::Kind Memory_, int kStride>
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struct Load<Scalar_, kAccessSize, Memory_, FragmentElementType::kScalar, Scalar_, kStride, 4> {
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/// The output type.
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typedef typename Vectorize<Scalar_, kAccessSize>::Type AccessType;
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/// The load function.
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static CUTLASS_HOST_DEVICE void load(AccessType& dst, Scalar_ const* pointer, int offset) {
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dst.registers[0] = reinterpret_cast<uint32_t const*>(&pointer[offset])[0];
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}
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/// The clear function.
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static CUTLASS_HOST_DEVICE void clear(AccessType& dst) {
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dst.registers[0] = uint32_t(0);
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <typename Scalar_, int kAccessSize, MemorySpace::Kind Memory_, int kStride>
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struct Load<Scalar_, kAccessSize, Memory_, FragmentElementType::kScalar, Scalar_, kStride, 8> {
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/// The output type.
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typedef typename Vectorize<Scalar_, kAccessSize>::Type AccessType;
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/// The load function.
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static CUTLASS_HOST_DEVICE void load(AccessType& dst, Scalar_ const* pointer, int offset) {
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uint2 tmp = reinterpret_cast<uint2 const*>(&pointer[offset])[0];
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dst.registers[0] = tmp.x;
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dst.registers[1] = tmp.y;
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}
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/// The clear function.
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static CUTLASS_HOST_DEVICE void clear(AccessType& dst) {
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uint2 const zero = make_uint2(0, 0);
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dst.registers[0] = zero.x;
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dst.registers[1] = zero.y;
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <MemorySpace::Kind Memory_, int kStride>
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struct Load<double, 2, Memory_, FragmentElementType::kScalar, double, kStride, 16> {
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/// The output type.
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typedef typename Vectorize<double, 2>::Type AccessType;
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/// The load function.
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static CUTLASS_HOST_DEVICE void load(AccessType& dst, double const* pointer, int offset) {
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double2 tmp = reinterpret_cast<double2 const*>(&pointer[offset])[0];
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dst[0] = tmp.x;
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dst[1] = tmp.y;
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}
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/// The clear function.
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static CUTLASS_HOST_DEVICE void clear(AccessType& dst) {
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double2 zero = make_double2(0, 0);
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dst[0] = zero.x;
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dst[1] = zero.y;
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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#if defined(__CUDACC_VERSION_MAJOR) && __CUDACC_VERSION_MAJOR < 10
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// WAR bug in NVCC where the upper and lower half of the register end up being the same
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template <MemorySpace::Kind Memory_, int kStride>
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struct Load<half, 8, Memory_, FragmentElementType::kScalar, half, kStride, 16> {
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/// The output type.
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typedef typename Vectorize<half, 8>::Type AccessType;
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/// The load function.
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static CUTLASS_HOST_DEVICE void load(AccessType& dst, half const* pointer, int offset) {
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int2 tmp = reinterpret_cast<int2 const*>(&pointer[offset])[0];
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dst.registers[0] = tmp.x;
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dst.registers[1] = tmp.y;
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tmp = reinterpret_cast<int2 const*>(&pointer[offset + 4])[0];
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dst.registers[2] = tmp.x;
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dst.registers[3] = tmp.y;
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}
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/// The clear function.
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static CUTLASS_HOST_DEVICE void clear(AccessType& dst) {
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int2 zero = make_int2(0,0);
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dst.registers[0] = zero.x;
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dst.registers[1] = zero.y;
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dst.registers[2] = zero.x;
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dst.registers[3] = zero.y;
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}
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};
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#endif
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <typename Scalar_, int kAccessSize, MemorySpace::Kind Memory_, int kStride>
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struct Load<Scalar_, kAccessSize, Memory_, FragmentElementType::kScalar, Scalar_, kStride, 16> {
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/// The output type.
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typedef typename Vectorize<Scalar_, kAccessSize>::Type AccessType;
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/// The load function.
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static CUTLASS_HOST_DEVICE void load(AccessType& dst, Scalar_ const* pointer, int offset) {
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uint4 tmp = reinterpret_cast<uint4 const*>(&pointer[offset])[0];
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dst.registers[0] = tmp.x;
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dst.registers[1] = tmp.y;
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dst.registers[2] = tmp.z;
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dst.registers[3] = tmp.w;
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}
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/// The clear function.
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static CUTLASS_HOST_DEVICE void clear(AccessType& dst) {
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uint4 zero = make_uint4(0, 0, 0, 0);
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dst.registers[0] = zero.x;
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dst.registers[1] = zero.y;
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dst.registers[2] = zero.z;
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dst.registers[3] = zero.w;
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <typename Scalar_,
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int kAccessSize,
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MemorySpace::Kind Memory_,
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FragmentElementType::Kind kFragmentElementType = FragmentElementType::kScalar,
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typename FragmentElement_ = Scalar_,
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int kStride = 1,
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size_t size = (sizeof(Scalar_) * kAccessSize)>
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struct Store {
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/// The output type.
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typedef typename Vectorize<FragmentElement_, kAccessSize>::Type AccessType;
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/// The store function.
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static CUTLASS_HOST_DEVICE void store(AccessType const& src, Scalar_* pointer, int offset) {
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pointer[offset] = *reinterpret_cast<Scalar_ const*>(&src);
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <typename Scalar_, int kAccessSize, MemorySpace::Kind Memory_>
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struct Store<Scalar_, kAccessSize, Memory_, FragmentElementType::kScalar, Scalar_, 1, 2> {
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/// The output type.
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typedef typename Vectorize<Scalar_, kAccessSize>::Type AccessType;
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/// The store function.
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static CUTLASS_HOST_DEVICE void store(AccessType const& src, Scalar_* pointer, int offset) {
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uint16_t* addr = reinterpret_cast<uint16_t*>(&pointer[offset]);
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addr[0] = reinterpret_cast<uint16_t const&>(src);
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <typename Scalar_, int kAccessSize, MemorySpace::Kind Memory_, int kStride>
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struct Store<Scalar_, kAccessSize, Memory_, FragmentElementType::kScalar, Scalar_, kStride, 4> {
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/// The output type.
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typedef typename Vectorize<Scalar_, kAccessSize>::Type AccessType;
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/// The store function.
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static CUTLASS_HOST_DEVICE void store(AccessType const& src, Scalar_* pointer, int offset) {
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uint32_t* addr = reinterpret_cast<uint32_t*>(&pointer[offset]);
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addr[0] = src.registers[0];
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <typename Scalar_, int kAccessSize, MemorySpace::Kind Memory_, int kStride>
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struct Store<Scalar_, kAccessSize, Memory_, FragmentElementType::kScalar, Scalar_, kStride, 8> {
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/// The output type.
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typedef typename Vectorize<Scalar_, kAccessSize>::Type AccessType;
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/// The store function.
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static CUTLASS_HOST_DEVICE void store(AccessType const& src, Scalar_* pointer, int offset) {
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uint2* addr = reinterpret_cast<uint2*>(&pointer[offset]);
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addr[0] = make_uint2(src.registers[0], src.registers[1]);
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <MemorySpace::Kind Memory_, int kStride>
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struct Store<double, 2, Memory_, FragmentElementType::kScalar, double, kStride, 16> {
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/// The output type.
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typedef typename Vectorize<double, 2>::Type AccessType;
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/// The store function.
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static CUTLASS_HOST_DEVICE void store(AccessType const& src, double* pointer, int offset) {
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double2* addr = reinterpret_cast<double2*>(&pointer[offset]);
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addr[0] = make_double2(src[0], src[1]);
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <typename Scalar_, int kAccessSize, MemorySpace::Kind Memory_, int kStride>
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struct Store<Scalar_, kAccessSize, Memory_, FragmentElementType::kScalar, Scalar_, kStride, 16> {
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/// The output type.
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typedef typename Vectorize<Scalar_, kAccessSize>::Type AccessType;
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/// The store function.
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static CUTLASS_HOST_DEVICE void store(AccessType const& src, Scalar_* pointer, int offset) {
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uint4* addr = reinterpret_cast<uint4*>(&pointer[offset]);
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addr[0] = make_uint4(src.registers[0], src.registers[1], src.registers[2], src.registers[3]);
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <typename Scalar_,
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int kAccessSize,
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MemorySpace::Kind Memory_,
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typename FragmentElement_,
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int kStride,
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size_t size>
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struct Load<Scalar_,
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kAccessSize,
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Memory_,
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FragmentElementType::kWmmaMatrix,
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FragmentElement_,
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kStride,
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size> {
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/// The output type.
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typedef FragmentElement_ AccessType;
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/// The load function.
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static CUTLASS_HOST_DEVICE void load(AccessType& value, Scalar_ const* pointer, int offset) {
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value.load(&pointer[offset], kStride);
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <int kAccessSize,
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MemorySpace::Kind Memory_,
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typename FragmentElement_,
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int kStride,
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size_t size>
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struct Load<Vector<bin1_t, 32>,
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kAccessSize,
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Memory_,
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FragmentElementType::kWmmaMatrix,
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FragmentElement_,
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kStride,
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size> {
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/// The output type.
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typedef FragmentElement_ AccessType;
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/// The load function.
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static CUTLASS_HOST_DEVICE void load(AccessType& value, Vector<bin1_t, 32> const* pointer,
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int offset) {
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value.load(&pointer[offset], kStride * 32);
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <int kAccessSize,
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MemorySpace::Kind Memory_,
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typename FragmentElement_,
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int kStride,
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size_t size>
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struct Load<Vector<int4_t, 8>,
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kAccessSize,
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Memory_,
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FragmentElementType::kWmmaMatrix,
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FragmentElement_,
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kStride,
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size> {
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/// The output type.
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typedef FragmentElement_ AccessType;
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/// The load function.
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static CUTLASS_HOST_DEVICE void load(AccessType& value, Vector<int4_t, 8> const* pointer,
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int offset) {
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value.load(&pointer[offset], kStride * 8);
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <int kAccessSize,
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MemorySpace::Kind Memory_,
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typename FragmentElement_,
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int kStride,
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size_t size>
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struct Load<Vector<uint4_t, 8>,
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kAccessSize,
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Memory_,
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FragmentElementType::kWmmaMatrix,
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FragmentElement_,
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kStride,
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size> {
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/// The output type.
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typedef FragmentElement_ AccessType;
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/// The load function.
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static CUTLASS_HOST_DEVICE void load(AccessType& value, Vector<uint4_t, 8> const* pointer,
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int offset) {
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value.load(&pointer[offset], kStride * 8);
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <typename Scalar_,
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int kAccessSize,
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MemorySpace::Kind Memory_,
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typename FragmentElement_,
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int kStride,
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size_t size>
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struct Store<Scalar_,
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kAccessSize,
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Memory_,
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FragmentElementType::kWmmaMatrix,
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FragmentElement_,
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kStride,
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size> {
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/// The input type.
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typedef FragmentElement_ AccessType;
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/// The store function.
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static CUTLASS_HOST_DEVICE void store(AccessType const& value, Scalar_* pointer, int offset) {
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value.store(&pointer[offset], kStride);
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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} // namespace cutlass
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