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memory.h
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memory.h
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/***************************************************************************************************
* Copyright (c) 2017 - 2022 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-License-Identifier: BSD-3-Clause
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
**************************************************************************************************/
/*! \file
\brief Architecture-specific operators on memory
*/
#pragma once
#include "cutlass/cutlass.h"
namespace cutlass {
namespace arch {
/////////////////////////////////////////////////////////////////////////////////////////////////
template <
/// Fragment type to store loaded data
typename AccessType,
/// The bytes of loading
int LoadBytes
>
struct global_load;
/////////////////////////////////////////////////////////////////////////////////////////////////
//
// Specializations
//
/////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////
#if (((__CUDACC_VER_MAJOR__ == 11) && (__CUDACC_VER_MINOR__ >= 4)) || \
(__CUDACC_VER_MAJOR__ > 11)) && \
defined(__CUDA_ARCH__) && (__CUDA_ARCH__ >= 750) && \
! (defined(__clang__) && defined(__CUDA__))
#define CUTLASS_ENABLE_L2_PREFETCH 1
#else
#define CUTLASS_ENABLE_L2_PREFETCH 0
#endif
/////////////////////////////////////////////////////////////////////////////////////////////////
// The redundant mov PTX instruction is used to enforce the compiler to
// initialize data to zero before ld.global
template <typename AccessType>
struct global_load<AccessType,
32
> {
CUTLASS_DEVICE
global_load(AccessType &D, void const *ptr, bool pred_guard) {
uint4 *data = reinterpret_cast<uint4 *>(&D);
asm volatile(
"{\n"
" .reg .pred p;\n"
" setp.ne.b32 p, %9, 0;\n"
" mov.b32 %0, %10;\n"
" mov.b32 %1, %11;\n"
" mov.b32 %2, %12;\n"
" mov.b32 %3, %13;\n"
" mov.b32 %4, %14;\n"
" mov.b32 %5, %15;\n"
" mov.b32 %6, %16;\n"
" mov.b32 %7, %17;\n"
#if CUTLASS_ENABLE_L2_PREFETCH
" @p ld.global.L2::128B.v4.u32 {%0, %1, %2, %3}, [%8];\n"
" @p ld.global.L2::128B.v4.u32 {%4, %5, %6, %7}, [%18];\n"
#else
" @p ld.global.v4.u32 {%0, %1, %2, %3}, [%8];\n"
" @p ld.global.v4.u32 {%4, %5, %6, %7}, [%18];\n"
#endif
"}\n"
: "=r"(data[0].x), "=r"(data[0].y), "=r"(data[0].z), "=r"(data[0].w),
"=r"(data[1].x), "=r"(data[1].y), "=r"(data[1].z), "=r"(data[1].w)
: "l"(ptr), "r"((int)pred_guard), "r"(data[0].x), "r"(data[0].y),
"r"(data[0].z), "r"(data[0].w), "r"(data[1].x), "r"(data[1].y),
"r"(data[1].z), "r"(data[1].w), "l"(((uint8_t *)ptr) + 16));
}
};
template <typename AccessType>
struct global_load<AccessType,
16
> {
CUTLASS_DEVICE
global_load(AccessType &D, void const *ptr, bool pred_guard) {
uint4 &data = reinterpret_cast<uint4 &>(D);
asm volatile(
"{\n"
" .reg .pred p;\n"
" setp.ne.b32 p, %5, 0;\n"
" mov.b32 %0, %6;\n"
" mov.b32 %1, %7;\n"
" mov.b32 %2, %8;\n"
" mov.b32 %3, %9;\n"
#if CUTLASS_ENABLE_L2_PREFETCH
" @p ld.global.L2::128B.v4.u32 {%0, %1, %2, %3}, [%4];\n"
#else
" @p ld.global.v4.u32 {%0, %1, %2, %3}, [%4];\n"
#endif
"}\n"
: "=r"(data.x), "=r"(data.y), "=r"(data.z), "=r"(data.w)
: "l"(ptr), "r"((int)pred_guard), "r"(data.x), "r"(data.y), "r"(data.z), "r"(data.w));
}
};
template <typename AccessType>
struct global_load<AccessType,
8
> {
CUTLASS_DEVICE
global_load(AccessType &D, void const *ptr, bool pred_guard) {
uint2 &data = reinterpret_cast<uint2 &>(D);
asm volatile(
"{\n"
" .reg .pred p;\n"
" setp.ne.b32 p, %3, 0;\n"
" mov.b32 %0, %4;\n"
" mov.b32 %1, %5;\n"
#if CUTLASS_ENABLE_L2_PREFETCH
" @p ld.global.L2::128B.v2.u32 {%0, %1}, [%2];\n"
#else
" @p ld.global.v2.u32 {%0, %1}, [%2];\n"
#endif
"}\n"
: "=r"(data.x), "=r"(data.y)
: "l"(ptr), "r"((int)pred_guard), "r"(data.x), "r"(data.y));
}
};
template <typename AccessType>
struct global_load<AccessType,
4
> {
CUTLASS_DEVICE
global_load(AccessType &D, void const *ptr, bool pred_guard) {
unsigned &data = reinterpret_cast<unsigned &>(D);
asm volatile(
"{\n"
" .reg .pred p;\n"
" setp.ne.b32 p, %2, 0;\n"
" mov.b32 %0, %3;\n"
#if CUTLASS_ENABLE_L2_PREFETCH
" @p ld.global.L2::128B.u32 %0, [%1];\n"
#else
" @p ld.global.u32 %0, [%1];\n"
#endif
"}\n"
: "=r"(data)
: "l"(ptr), "r"((int)pred_guard), "r"(data));
}
};
template <typename AccessType>
struct global_load<AccessType,
2
> {
CUTLASS_DEVICE
global_load(AccessType &D, void const *ptr, bool pred_guard) {
uint16_t &data = reinterpret_cast<uint16_t &>(D);
asm volatile(
"{\n"
" .reg .pred p;\n"
" setp.ne.b32 p, %2, 0;\n"
" mov.b16 %0, %3;\n"
#if CUTLASS_ENABLE_L2_PREFETCH
" @p ld.global.L2::128B.u16 %0, [%1];\n"
#else
" @p ld.global.u16 %0, [%1];\n"
#endif
"}\n"
: "=h"(data)
: "l"(ptr), "r"((int)pred_guard), "h"(data));
}
};
template <typename AccessType>
struct global_load<AccessType,
1
> {
CUTLASS_DEVICE
global_load(AccessType &D, void const *ptr, bool pred_guard) {
if (pred_guard) D = *(reinterpret_cast<AccessType const *>(ptr));
}
};
/////////////////////////////////////////////////////////////////////////////////////////////////
template <
/// Fragment type to store data
typename AccessType,
/// The bytes of storing
int StoreBytes
>
struct global_store;
/////////////////////////////////////////////////////////////////////////////////////////////////
//
// Specializations
//
/////////////////////////////////////////////////////////////////////////////////////////////////
template <typename AccessType>
struct global_store<AccessType, 64> {
CUTLASS_DEVICE
global_store(AccessType const &D, void *ptr, bool pred_guard) {
uint4 const *data = reinterpret_cast<uint4 const *>(&D);
asm volatile(
"{\n"
" .reg .pred p;\n"
" setp.ne.b32 p, %5, 0;\n"
" @p st.global.v4.u32 [%0], {%1, %2, %3, %4};\n"
" @p st.global.v4.u32 [%6], {%7, %8, %9, %10};\n"
" @p st.global.v4.u32 [%11], {%12, %13, %14, %15};\n"
" @p st.global.v4.u32 [%16], {%17, %18, %19, %20};\n"
"}\n"
:
: "l"(ptr), "r"(data[0].x), "r"(data[0].y), "r"(data[0].z),
"r"(data[0].w), "r"((int)pred_guard), "l"(((uint8_t *)ptr) + 16),
"r"(data[1].x), "r"(data[1].y), "r"(data[1].z), "r"(data[1].w),
"l"(((uint8_t *)ptr) + 32),
"r"(data[2].x), "r"(data[2].y), "r"(data[2].z), "r"(data[2].w),
"l"(((uint8_t *)ptr) + 48),
"r"(data[3].x), "r"(data[3].y), "r"(data[3].z), "r"(data[3].w));
}
};
template <typename AccessType>
struct global_store<AccessType, 32> {
CUTLASS_DEVICE
global_store(AccessType const &D, void *ptr, bool pred_guard) {
uint4 const *data = reinterpret_cast<uint4 const *>(&D);
asm volatile(
"{\n"
" .reg .pred p;\n"
" setp.ne.b32 p, %5, 0;\n"
" @p st.global.v4.u32 [%0], {%1, %2, %3, %4};\n"
" @p st.global.v4.u32 [%6], {%7, %8, %9, %10};\n"
"}\n"
:
: "l"(ptr), "r"(data[0].x), "r"(data[0].y), "r"(data[0].z),
"r"(data[0].w), "r"((int)pred_guard), "l"(((uint8_t *)ptr) + 16),
"r"(data[1].x), "r"(data[1].y), "r"(data[1].z), "r"(data[1].w));
}
};
template <typename AccessType>
struct global_store<AccessType, 16> {
CUTLASS_DEVICE
global_store(AccessType const &D, void *ptr, bool pred_guard) {
uint4 const &data = reinterpret_cast<uint4 const &>(D);
asm volatile(
"{\n"
" .reg .pred p;\n"
" setp.ne.b32 p, %5, 0;\n"
" @p st.global.v4.u32 [%0], {%1, %2, %3, %4};\n"
"}\n"
:
: "l"(ptr), "r"(data.x), "r"(data.y), "r"(data.z), "r"(data.w), "r"((int)pred_guard));
}
};
template <typename AccessType>
struct global_store<AccessType, 8> {
CUTLASS_DEVICE
global_store(AccessType const &D, void *ptr, bool pred_guard) {
uint2 const &data = reinterpret_cast<uint2 const &>(D);
asm volatile(
"{\n"
" .reg .pred p;\n"
" setp.ne.b32 p, %3, 0;\n"
" @p st.global.v2.u32 [%0], {%1, %2};\n"
"}\n"
:
: "l"(ptr), "r"(data.x), "r"(data.y), "r"((int)pred_guard));
}
};
template <typename AccessType>
struct global_store<AccessType, 4> {
CUTLASS_DEVICE
global_store(AccessType const &D, void *ptr, bool pred_guard) {
uint32_t const &data = reinterpret_cast<uint32_t const &>(D);
asm volatile(
"{\n"
" .reg .pred p;\n"
" setp.ne.b32 p, %2, 0;\n"
" @p st.global.u32 [%0], %1;\n"
"}\n"
:
: "l"(ptr), "r"(data), "r"((int)pred_guard));
}
};
template <typename AccessType>
struct global_store<AccessType, 2> {
CUTLASS_DEVICE
global_store(AccessType const &D, void *ptr, bool pred_guard) {
uint16_t const &data = reinterpret_cast<uint16_t const &>(D);
asm volatile(
"{\n"
" .reg .pred p;\n"
" setp.ne.b32 p, %2, 0;\n"
" @p st.global.u16 [%0], %1;\n"
"}\n"
:
: "l"(ptr), "h"(data), "r"((int)pred_guard));
}
};
template <typename AccessType>
struct global_store<AccessType, 1> {
CUTLASS_DEVICE
global_store(AccessType const &D, void *ptr, bool pred_guard) {
if (pred_guard) *(reinterpret_cast<AccessType *>(ptr)) = D;
}
};
/////////////////////////////////////////////////////////////////////////////////////////////////
/// ld.shared
template <int Bytes>
CUTLASS_DEVICE
void shared_load(void *dst, uint32_t ptr);
/// ld.shared - 16b
template <>
CUTLASS_DEVICE
void shared_load<2>(void *dst, uint32_t ptr) {
asm volatile("ld.shared.u16 %0, [%1];\n"
: "=h"(*reinterpret_cast<uint16_t *>(dst))
: "r"(ptr));
}
/// ld.shared - 32b
template <>
CUTLASS_DEVICE
void shared_load<4>(void *dst, uint32_t ptr) {
asm volatile("ld.shared.u32 %0, [%1];\n"
: "=r"(*reinterpret_cast<uint32_t *>(dst))
: "r"(ptr));
}
/// ld.shared - 64b
template <>
CUTLASS_DEVICE
void shared_load<8>(void *dst, uint32_t ptr) {
uint2 *dst_u64 = reinterpret_cast<uint2 *>(dst);
asm volatile("ld.shared.v2.u32 {%0, %1}, [%2];\n"
:
"=r"(dst_u64->x),
"=r"(dst_u64->y)
: "r"(ptr));
}
/// ld.shared - 128b
template <>
CUTLASS_DEVICE
void shared_load<16>(void *dst, uint32_t ptr) {
uint4 *dst_u128 = reinterpret_cast<uint4 *>(dst);
asm volatile("ld.shared.v4.u32 {%0, %1, %2, %3}, [%4];\n"
:
"=r"(dst_u128->x),
"=r"(dst_u128->y),
"=r"(dst_u128->z),
"=r"(dst_u128->w)
: "r"(ptr));
}
/////////////////////////////////////////////////////////////////////////////////////////////////
/// st.shared
template <int Bytes>
CUTLASS_DEVICE
void shared_store(uint32_t ptr, void const *src);
/// st.shared - 16b
template <>
CUTLASS_DEVICE
void shared_store<2>(uint32_t ptr, void const *src) {
asm volatile("st.shared.u16 [%0], %1;\n"
: :
"r"(ptr),
"h"(*reinterpret_cast<uint16_t const *>(src))
);
}
/// st.shared - 32b
template <>
CUTLASS_DEVICE
void shared_store<4>(uint32_t ptr, void const *src) {
asm volatile("st.shared.u32 [%0], %1;\n"
: :
"r"(ptr),
"r"(*reinterpret_cast<uint32_t const *>(src))
);
}
/// st.shared - 64b
template <>
CUTLASS_DEVICE
void shared_store<8>(uint32_t ptr, void const *src) {
uint2 const *dst_u64 = reinterpret_cast<uint2 const *>(src);
asm volatile("st.shared.v2.u32 [%0], {%1, %2};\n"
: :
"r"(ptr),
"r"(dst_u64->x),
"r"(dst_u64->y)
);
}
/// st.shared - 128b
template <>
CUTLASS_DEVICE
void shared_store<16>(uint32_t ptr, void const *src) {
uint4 const *dst_u128 = reinterpret_cast<uint4 const *>(src);
asm volatile("ld.shared.v4.u32 [%0], {%1, %2, %3, %4};\n"
: :
"r"(ptr),
"r"(dst_u128->x),
"r"(dst_u128->y),
"r"(dst_u128->z),
"r"(dst_u128->w)
);
}
/////////////////////////////////////////////////////////////////////////////////////////////////
} // namespace arch
} // namespace cutlass
/////////////////////////////////////////////////////////////////////////////////////////////////
#include "memory_sm75.h"
#include "memory_sm80.h"
/////////////////////////////////////////////////////////////////////////////////////////////////