Files
composable_kernel/example/91_tile_program/softmax.cpp
2024-07-18 08:37:13 +00:00

86 lines
2.7 KiB
C++

#include <cstring>
#include "ck/utility/common_header.hpp"
#include "ck/tensor_description/tensor_descriptor_helper.hpp"
#include "ck/tensor_description/cluster_descriptor.hpp"
#include "ck/tensor/tensor_view.hpp"
#include "ck/host_utility/device_prop.hpp"
#include "ck/host_utility/kernel_launch.hpp"
#include "ck/library/utility/check_err.hpp"
#include "ck/library/utility/device_memory.hpp"
#include "ck/library/utility/fill.hpp"
#include "ck/library/utility/host_tensor.hpp"
#include "ck/library/utility/host_tensor_generator.hpp"
#include "reference_softmax.hpp"
#include "softmax.hpp"
int main(int argc, char* argv[])
{
using ADataType = ck::half_t;
using AccDataType = float;
using BDataType = ck::half_t;
ck::index_t M = 13312;
ck::index_t N = 4096;
if(argc == 3)
{
M = std::stoi(argv[1]);
N = std::stoi(argv[2]);
}
std::array<ck::index_t, 2> a_lengths{M, N};
std::array<ck::index_t, 2> a_strides{N, 1};
std::array<ck::index_t, 2> b_lengths{M, N};
std::array<ck::index_t, 2> b_strides{N, 1};
// host verify
Tensor<ADataType> a_host(a_lengths, a_strides);
Tensor<BDataType> b_host_ref(b_lengths, b_strides);
Tensor<BDataType> b_host_dev(b_lengths, b_strides);
ck::utils::FillUniformDistributionIntegerValue<ADataType>{-5.f, 5.f}(a_host);
// reference
reference_softmax<ADataType, AccDataType, BDataType>(a_host, b_host_ref);
DeviceMem a_buf(sizeof(ADataType) * a_host.GetElementSpaceSize());
DeviceMem b_buf(sizeof(BDataType) * b_host_ref.GetElementSpaceSize());
a_buf.ToDevice(a_host.mData.data());
constexpr ck::index_t kMPerBlock = 128;
constexpr ck::index_t kNPerBlock = 128;
constexpr ck::index_t kBlockSize = 256;
ck::index_t kGridSize = (M / kMPerBlock);
std::cout << "grid size " << kGridSize << std::endl;
const auto kernel =
Softmax<ADataType, AccDataType, BDataType, kBlockSize, kMPerBlock, kNPerBlock>{};
float ave_time = launch_kernel(StreamConfig{nullptr, true},
kernel,
kGridSize,
kBlockSize,
0,
static_cast<ADataType*>(a_buf.GetDeviceBuffer()),
static_cast<BDataType*>(b_buf.GetDeviceBuffer()),
M,
N);
b_buf.FromDevice(b_host_dev.mData.data());
std::size_t num_btype = sizeof(ADataType) * M * N + sizeof(BDataType) * M * N;
float gb_per_sec = num_btype / 1.E6 / ave_time;
std::cout << "Perf: " << ave_time << " ms, " << gb_per_sec << " GB/s" << std::endl;
return !ck::utils::check_err(b_host_dev, b_host_ref);
}