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Single-kernel GEMM + layernorm (#263)

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* dump lds content in appropriate precision type

* add squared add reduction op; allows sq sum

* initial stub from regular gemm impl

* layernorm example code & host verification

* initial layernorm implementation

* tidy up

* make C0 precision type consistent with C

* clang-tidy and additional comments

* tighten up example code

* account for extra flops/bytes from normalization

* clang-format

* c0 bias/beta/gamma now have its own precision type

* AccElemOp for gemm outputs prior to feeding to layernorm

* update workgroup mapping

* rename kernel template param to reflect its dual use

* use LDS mem pool for reduction workspace

* change cshuffle precision type to f16; clean up

* clang-format

* correct naming

* explicit cast

* fully implemented gemm + bias + activation + add + norm

* activation in correct order

* reflect reduction API's recent change

* amend

* clean up; add comment

* keep up with recent changes in reduction API

* format

* resolve merge conflicts

Co-authored-by: Chao Liu <chao.liu2@amd.com>
This commit is contained in:
Anthony Chang
2022-07-01 14:38:00 +08:00
committed by GitHub
parent 1c8126a4c2
commit 63fd5da637
9 changed files with 2415 additions and 4 deletions
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1
example/21_gemm_layernorm/CMakeLists.txt
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@@ -1,2 +1,3 @@
add_example_executable(example_gemm_bias_relu_add_layernorm_xdl_fp16 gemm_bias_relu_add_layernorm_xdl_fp16.cpp)
add_example_executable(example_gemm_layernorm_xdl_fp16 gemm_layernorm_xdl_fp16.cpp)
add_example_executable(example_gemm_xdl_layernorm_single_kernel_fp16 gemm_xdl_layernorm_single_kernel_fp16.cpp)

289
example/21_gemm_layernorm/gemm_xdl_layernorm_single_kernel_fp16.cpp Normal file
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@@ -0,0 +1,289 @@
// SPDX-License-Identifier: MIT
// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.
#include <iostream>
#include <numeric>
#include <initializer_list>
#include "ck/ck.hpp"
#include "ck/library/utility/check_err.hpp"
#include "ck/library/host_tensor/device_memory.hpp"
#include "ck/library/host_tensor/host_tensor.hpp"
#include "ck/library/host_tensor/host_tensor_generator.hpp"
#include "ck/tensor_operation/gpu/device/tensor_layout.hpp"
#include "ck/tensor_operation/gpu/device/device_gemm_xdl_layernorm_cshuffle.hpp"
#include "ck/tensor_operation/gpu/element/element_wise_operation.hpp"
#include "ck/utility/reduction_operator.hpp"
#include "ck/library/reference_tensor_operation/cpu/reference_gemm_layernorm.hpp"
#include "ck/tensor_operation/gpu/device/gemm_specialization.hpp"
// This example demonstrate a single kernel that runs GEMM layer and laynorm in one fused kernel
//
// The GEMM + Layernorm implementation is a specialized kernel which allows fusing both layers
// together given the condition GEMM extents N of MNK is spanned by a single workgroup. For example,
// a kernel configured with NPerBlock = 128 allows to operate on all GEMM sizes if N <= 128
//
// D = Layernorm(acc_element_op(A * B + broadcast(bias)) + add) * broadcast(gamma) + broadcast(beta)
template <ck::index_t... Is>
using S = ck::Sequence<Is...>;
using F16 = ck::half_t;
using F32 = float;
using Row = ck::tensor_layout::gemm::RowMajor;
using Col = ck::tensor_layout::gemm::ColumnMajor;
using ADataType = F16;
using BDataType = F16;
using CDataType = F16;
using C0DataType = F16;
using AccDataType = F32;
using CShuffleDataType = F16;
using ALayout = ck::tensor_layout::gemm::RowMajor;
using BLayout = ck::tensor_layout::gemm::ColumnMajor;
using CLayout = ck::tensor_layout::gemm::RowMajor;
struct Relu
{
template <typename OutT, typename InT>
__host__ __device__ void operator()(OutT& y, const InT& x) const
{
y = x > 0 ? x : 0;
}
};
using AElementOp = ck::tensor_operation::element_wise::PassThrough;
using BElementOp = ck::tensor_operation::element_wise::PassThrough;
// Elementwise operation that operates on the output of matrix multiplication
// i.e., AccElementOp(A * B + bias)
using AccElementOp = Relu;
// Elementwise operation that operates on the output of layer normalization
using CElementOp = Relu;
static constexpr auto GemmDefault = ck::tensor_operation::device::GemmSpecialization::Default;
// clang-format off
using DeviceGemmInstance = ck::tensor_operation::device::DeviceGemmLayerNorm_Xdl_CShuffle
//######| ALayout| BLayout| CLayout| AData| BData| CData| C0Data| GemmAcc| CShuffle| ReduceAcc| A| B| Acc| C| GEMM| NumGemmK| Block| MPer| NPer| KPer| AK1| BK1| MPer| NPer| MXdl| NXdl| ABlockTransfer| ABlockTransfer| ABlockTransfer| ABlockTransfer| ABlockTransfer| ABlockTransfer| ABlockLds| BBlockTransfer| BBlockTransfer| BBlockTransfer| BlockTransfer| BBlockTransfer| BBlockTransfer| BBlockLds| CShuffle| CShuffle| CBlockTransferClusterLengths| CBlockTransfer| CReduce| CReduceThreadCopy|
//######| | | | Type| Type| Type| Type| DataType| DataType| DataType| Elementwise| Elementwise| Elementwise| Elementwise| Spacialization| Prefetch| Size| Block| Block| Block| | | XDL| XDL| Per| Per| ThreadCluster| ThreadCluster| SrcAccessOrder| SrcVectorDim| SrcScalar| DstScalar| ExtraM| ThreadCluster| ThreadCluster| SrcAccessOrder| SrcVectorDim| SrcScalar| DstScalar| ExtraN| MXdlPerWave| NXdlPerWave| _MBlock_MPerBlock| ScalarPerVector| ThreadClusterLengths| SrcDstScalarPerVector|
//######| | | | | | | | | | | Operation| Operation| Operation| Operation| | Stage| | | | | | | | | Wave| Wave| Lengths_K0_M_K1| ArrangeOrder| | | PerVector| PerVector_K1| | Lengths_K0_N_K1| ArrangeOrder| | | PerVector| PerVector_K1| | PerShuffle| PerShuffle| _NBlock_NPerBlock| _NPerBlock| _MPerBlock_NPerBlock| _NPerBlock|
//######| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
< Row, Col, Row, ADataType, BDataType, CDataType, C0DataType, AccDataType, CShuffleDataType, AccDataType, AElementOp, BElementOp, AccElementOp, CElementOp, GemmDefault, 1, 256, 256, 128, 32, 8, 8, 32, 32, 4, 2, S<4, 64, 1>, S<1, 0, 2>, S<1, 0, 2>, 2, 8, 8, 1, S<4, 64, 1>, S<1, 0, 2>, S<1, 0, 2>, 2, 8, 8, 1, 1, 2, S<1, 32, 1, 8>, 8, S<64, 4>, 4>;
// clang-format on
using ReferenceInstance = ck::tensor_operation::host::ReferenceGemmLayernorm<ADataType,
BDataType,
CDataType,
C0DataType,
AccDataType,
AElementOp,
BElementOp,
AccElementOp,
CElementOp>;
int main(int argc, char* argv[])
{
bool do_verification = true;
int init_method = 1;
bool time_kernel = false;
// GEMM shape
ck::index_t M = 3840;
ck::index_t N = 128;
ck::index_t K = 4096;
ck::index_t StrideA = 4096;
ck::index_t StrideB = 4096;
ck::index_t StrideC = 128;
if(argc == 1)
{
// do nothing
}
else if(argc == 4)
{
do_verification = std::stoi(argv[1]);
init_method = std::stoi(argv[2]);
time_kernel = std::stoi(argv[3]);
}
else if(argc == 10)
{
do_verification = std::stoi(argv[1]);
init_method = std::stoi(argv[2]);
time_kernel = std::stoi(argv[3]);
M = std::stoi(argv[4]);
N = std::stoi(argv[5]);
K = std::stoi(argv[6]);
StrideA = std::stoi(argv[7]);
StrideB = std::stoi(argv[8]);
StrideC = std::stoi(argv[9]);
}
else
{
printf("arg1: verification (0=no, 1=yes)\n");
printf("arg2: initialization (0=no init, 1=integer value, 2=decimal value)\n");
printf("arg3: time kernel (0=n0, 1=yes)\n");
printf("arg4 to 9: M (256x), N(128x), K(32x), StrideA, StrideB, StrideC\n");
exit(0);
}
auto f_host_tensor_descriptor =
[](std::size_t row, std::size_t col, std::size_t stride, auto layout) {
if(std::is_same<decltype(layout), ck::tensor_layout::gemm::RowMajor>::value)
{
return HostTensorDescriptor(std::vector<std::size_t>({row, col}),
std::vector<std::size_t>({stride, 1}));
}
else
{
return HostTensorDescriptor(std::vector<std::size_t>({row, col}),
std::vector<std::size_t>({1, stride}));
}
};
Tensor<ADataType> a_m_k(f_host_tensor_descriptor(M, K, StrideA, ALayout{}));
Tensor<BDataType> b_k_n(f_host_tensor_descriptor(K, N, StrideB, BLayout{}));
Tensor<CDataType> c_m_n_host_result(f_host_tensor_descriptor(M, N, StrideC, CLayout{}));
Tensor<CDataType> c_m_n_device_result(f_host_tensor_descriptor(M, N, StrideC, CLayout{}));
Tensor<AccDataType> acc_m_n_host_result(f_host_tensor_descriptor(M, N, StrideC, CLayout{}));
Tensor<C0DataType> c0_n_bias(HostTensorDescriptor(std::vector<size_t>({size_t(N)})));
Tensor<C0DataType> c0_m_n_add(f_host_tensor_descriptor(M, N, StrideC, CLayout{}));
Tensor<C0DataType> c0_n_gamma(HostTensorDescriptor(std::vector<size_t>({size_t(N)})));
Tensor<C0DataType> c0_n_beta(HostTensorDescriptor(std::vector<size_t>({size_t(N)})));
std::cout << "a_m_k: " << a_m_k.mDesc << std::endl;
std::cout << "b_k_n: " << b_k_n.mDesc << std::endl;
std::cout << "c_m_n: " << c_m_n_host_result.mDesc << std::endl;
std::cout << "c0_n_bias: " << c0_n_bias.mDesc << std::endl;
std::cout << "c0_m_n_add: " << c0_m_n_add.mDesc << std::endl;
std::cout << "c0_n_gamma: " << c0_n_gamma.mDesc << std::endl;
std::cout << "c0_n_beta: " << c0_n_beta.mDesc << std::endl;
switch(init_method)
{
case 0: break;
case 1:
a_m_k.GenerateTensorValue(GeneratorTensor_2<ADataType>{-5, 5});
b_k_n.GenerateTensorValue(GeneratorTensor_2<BDataType>{-5, 5});
break;
case 2:
a_m_k.GenerateTensorValue(GeneratorTensor_3<ADataType>{0.0, 1.0});
b_k_n.GenerateTensorValue(GeneratorTensor_3<BDataType>{-0.5, 0.5});
break;
default:
a_m_k.GenerateTensorValue(GeneratorTensor_Sequential<0>{});
b_k_n.GenerateTensorValue(GeneratorTensor_Sequential<1>{});
}
c0_n_bias.GenerateTensorValue(GeneratorTensor_2<C0DataType>{-5, 5});
c0_m_n_add.GenerateTensorValue(GeneratorTensor_2<C0DataType>{-5, 5});
c0_n_gamma.GenerateTensorValue(GeneratorTensor_2<C0DataType>{0, 2});
c0_n_beta.GenerateTensorValue(GeneratorTensor_2<C0DataType>{0, 5});
c_m_n_host_result.GenerateTensorValue(GeneratorTensor_1<CDataType>{0});
acc_m_n_host_result.GenerateTensorValue(GeneratorTensor_1<AccDataType>{0});
DeviceMem a_device_buf(sizeof(ADataType) * a_m_k.mDesc.GetElementSpace());
DeviceMem b_device_buf(sizeof(BDataType) * b_k_n.mDesc.GetElementSpace());
DeviceMem c_device_buf(sizeof(CDataType) * c_m_n_device_result.mDesc.GetElementSpace());
DeviceMem c0_bias_buf(sizeof(C0DataType) * c0_n_bias.mDesc.GetElementSpace());
DeviceMem c0_add_buf(sizeof(C0DataType) * c0_m_n_add.mDesc.GetElementSpace());
DeviceMem c0_gamma_buf(sizeof(C0DataType) * c0_n_gamma.mDesc.GetElementSpace());
DeviceMem c0_beta_buf(sizeof(C0DataType) * c0_n_beta.mDesc.GetElementSpace());
a_device_buf.ToDevice(a_m_k.mData.data());
b_device_buf.ToDevice(b_k_n.mData.data());
c0_bias_buf.ToDevice(c0_n_bias.mData.data());
c0_add_buf.ToDevice(c0_m_n_add.mData.data());
c0_gamma_buf.ToDevice(c0_n_gamma.mData.data());
c0_beta_buf.ToDevice(c0_n_beta.mData.data());
auto a_element_op = AElementOp{};
auto b_element_op = BElementOp{};
auto acc_element_op = AccElementOp{};
auto c_element_op = CElementOp{};
// do GEMM
auto gemm = DeviceGemmInstance{};
auto invoker = gemm.MakeInvoker();
auto argument = gemm.MakeArgument(static_cast<ADataType*>(a_device_buf.GetDeviceBuffer()),
static_cast<BDataType*>(b_device_buf.GetDeviceBuffer()),
static_cast<CDataType*>(c_device_buf.GetDeviceBuffer()),
static_cast<C0DataType*>(c0_add_buf.GetDeviceBuffer()),
static_cast<C0DataType*>(c0_bias_buf.GetDeviceBuffer()),
static_cast<C0DataType*>(c0_gamma_buf.GetDeviceBuffer()),
static_cast<C0DataType*>(c0_beta_buf.GetDeviceBuffer()),
M,
N,
K,
StrideA,
StrideB,
StrideC,
a_element_op,
b_element_op,
acc_element_op,
c_element_op);
if(!gemm.IsSupportedArgument(argument))
{
throw std::runtime_error(
"wrong! device_gemm with the specified compilation parameters does "
"not support this GEMM problem");
}
float ave_time = invoker.Run(argument, StreamConfig{nullptr, time_kernel});
// extra 6MN flops due to: bias + add + gamma + beta + norm_sub + norm_div,
// excluding reduction steps
std::size_t flop = std::size_t(2) * M * N * K + std::size_t(6) * M * N;
// extra MN and 3N due to c0_add (MxN), bias (1xN), gamma (1xN), beta (1xN)
std::size_t bytes = sizeof(ADataType) * M * K + sizeof(BDataType) * K * N +
sizeof(CDataType) * 2 * M * N + sizeof(C0DataType) * 3 * N;
float tflops = static_cast<float>(flop) / 1.E9 / ave_time;
float gb_per_sec = bytes / 1.E6 / ave_time;
std::cout << "Perf: " << ave_time << " ms, " << tflops << " TFlops, " << gb_per_sec << " GB/s, "
<< gemm.GetTypeString() << std::endl;
bool pass = true;
if(do_verification)
{
c_device_buf.FromDevice(c_m_n_device_result.mData.data());
auto ref_gemm = ReferenceInstance{};
auto ref_invoker = ref_gemm.MakeInvoker();
auto ref_argument = ref_gemm.MakeArgument(a_m_k,
b_k_n,
c_m_n_host_result,
c0_n_bias,
c0_m_n_add,
c0_n_gamma,
c0_n_beta,
a_element_op,
b_element_op,
acc_element_op,
c_element_op);
ref_invoker.Run(ref_argument);
if constexpr(std::is_same<CShuffleDataType, F32>::value)
{
pass &= ck::utils::check_err(
c_m_n_device_result.mData, c_m_n_host_result.mData, "Error: Incorrect results c");
}
else if constexpr(std::is_same<CShuffleDataType, F16>::value)
{
pass &= ck::utils::check_err(c_m_n_device_result.mData,
c_m_n_host_result.mData,
"Error: Incorrect results c",
1e-2,
1e-2);
}
}
return pass ? 0 : 1;
}