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syr2k_grouped.cu
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syr2k_grouped.cu
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/***************************************************************************************************
* Copyright (c) 2017 - 2024 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 SYR2K Grouped Example.
This workload computes a batch of SYR2K operations with distinct problem sizes. This example closely
follows 24_gemm_grouped.
Examples:
# Runs a grouped SYR2K with 100 random problem sizes
$ ./examples/38_syr2k_grouped/38_syr2k_grouped --groups=100
# Runs a grouped SYR2K with 100 random problem sizes (with SYR2K-K dimension equal to 1024)
$ ./examples/38_syr2k_grouped/24_gemm_grouped --groups=100 --k=1024 --verbose=true
# Runs a grouped SYR2K that is equivalent to a batched SYR2K
$ ./examples/38_syr2k_grouped/38_syr2k_grouped --groups=100 --n=1024 --k=1024 --verbose=true
# Execute grouped SYR2K and profile with NSight
$ nv-nsight-cu-cli ./examples/38_syr2k_grouped/38_syr2k_grouped --n=256 --k=256 --verbose=true \
--iterations=1 --reference-check=false
*/
/////////////////////////////////////////////////////////////////////////////////////////////////
#include <chrono>
#include <iostream>
#include <fstream>
#include <sstream>
#include <unordered_map>
#include <vector>
#include "cutlass/blas3.h"
#include "cutlass/cutlass.h"
#include "cutlass/device_kernel.h"
#include "cutlass/gemm/gemm.h"
#include "cutlass/gemm/device/default_gemm_configuration.h"
#include "cutlass/gemm/kernel/rank_2k_grouped.h"
#include "cutlass/gemm/kernel/default_rank_2k_grouped.h"
#include "cutlass/gemm/device/rank_2k_grouped.h"
#include "cutlass/gemm/device/rank_2k.h"
#include "cutlass/util/command_line.h"
#include "cutlass/util/distribution.h"
#include "cutlass/util/device_memory.h"
#include "cutlass/util/tensor_view_io.h"
#include "cutlass/util/host_tensor.h"
#include "cutlass/util/reference/host/rank_2k_complex.h"
#include "cutlass/util/reference/host/tensor_compare.h"
#include "cutlass/util/reference/host/tensor_copy.h"
#include "cutlass/util/reference/host/tensor_fill.h"
#include "cutlass/util/reference/device/tensor_fill.h"
#include "cutlass/util/reference/host/tensor_norm.h"
/////////////////////////////////////////////////////////////////////////////////////////////////
/// Result structure
struct Result {
double runtime_ms;
double initialization_time_ms;
double gflops;
cutlass::Status status;
cudaError_t error;
bool passed;
//
// Methods
//
Result(
double runtime_ms = 0,
double initialization_time_ms = 0,
double gflops = 0,
cutlass::Status status = cutlass::Status::kSuccess,
cudaError_t error = cudaSuccess
):
runtime_ms(runtime_ms), initialization_time_ms(initialization_time_ms), gflops(gflops),
status(status), error(error), passed(true) { }
};
/////////////////////////////////////////////////////////////////////////////////////////////////
// Command line options parsing
struct Options {
bool help;
bool error;
bool reference_check;
bool profile_initialization;
bool sort_problems;
std::vector<cutlass::gemm::GemmCoord> problem_sizes;
int alignment;
int problem_count;
int iterations;
int cuda_streams;
bool verbose;
float alpha;
float beta;
std::string benchmark_path;
std::string output_tag;
std::ofstream output_file;
using GroupScheduleMode = cutlass::gemm::kernel::GroupScheduleMode;
std::vector<GroupScheduleMode> scheduler_modes;
std::unordered_map<std::string, GroupScheduleMode>
str_to_scheduler_mode = {
{"kDeviceOnly", GroupScheduleMode::kDeviceOnly},
{"kHostPrecompute", GroupScheduleMode::kHostPrecompute}
};
struct GroupScheduleModeHash {
size_t operator()(GroupScheduleMode m) const {
return static_cast<size_t>(m);
}
};
std::unordered_map<GroupScheduleMode, std::string, GroupScheduleModeHash>
scheduler_mode_to_str = {
{GroupScheduleMode::kDeviceOnly, "kDeviceOnly"},
{GroupScheduleMode::kHostPrecompute, "kHostPrecompute"}
};
std::vector<GroupScheduleMode> all_scheduler_modes = {GroupScheduleMode::kDeviceOnly, GroupScheduleMode::kHostPrecompute};
//
// Methods
//
Options():
help(false),
error(false),
alignment(8),
reference_check(true),
profile_initialization(false),
sort_problems(false),
problem_count(5),
iterations(20),
cuda_streams(0),
verbose(false),
alpha(1),
beta(),
scheduler_modes({GroupScheduleMode::kDeviceOnly})
{ }
// Parses the command line
void parse(int argc, char const **args) {
cutlass::CommandLine cmd(argc, args);
if (cmd.check_cmd_line_flag("help")) {
help = true;
return;
}
cmd.get_cmd_line_argument("alignment", alignment, 8);
cmd.get_cmd_line_argument("groups", problem_count, 5);
cmd.get_cmd_line_argument("alpha", alpha, 1.0f);
cmd.get_cmd_line_argument("beta", beta, 0.0f);
cmd.get_cmd_line_argument("iterations", iterations, 20);
cmd.get_cmd_line_argument("streams", cuda_streams, 0);
cmd.get_cmd_line_argument("verbose", verbose, false);
cmd.get_cmd_line_argument("reference-check", reference_check, true);
cmd.get_cmd_line_argument("profile-initialization", profile_initialization, false);
cmd.get_cmd_line_argument("sort-problems", sort_problems, false);
cmd.get_cmd_line_argument("benchmark", benchmark_path);
std::vector<std::string> scheduler_mode_strs;
cmd.get_cmd_line_arguments("scheduler-modes", scheduler_mode_strs);
if (!scheduler_mode_strs.empty()) {
scheduler_modes.clear();
if (scheduler_mode_strs.size() == 1 && scheduler_mode_strs[0] == "all") {
scheduler_modes = all_scheduler_modes;
} else {
for (std::string precomp_str : scheduler_mode_strs) {
auto it = str_to_scheduler_mode.find(precomp_str);
if (it != str_to_scheduler_mode.end()) {
scheduler_modes.push_back(it->second);
} else if (precomp_str == "all") {
std::cerr << "Flag --scheduler-modes=all must not contain other scheduler modes in list." << std::endl;
error = true;
return;
} else {
std::cerr << "Unrecognized scheduler mode '" << precomp_str << "'" << std::endl;
error = true;
return;
}
}
}
}
std::string output_path;
cmd.get_cmd_line_argument("tag", output_tag);
cmd.get_cmd_line_argument("output_file", output_path);
if (!output_path.empty()) {
std::ios_base::openmode open_mode = std::ios_base::out;
std::ifstream input_file(output_path.c_str());
if (input_file.good()) {
open_mode = std::ios_base::app;
input_file.close();
}
output_file.open(output_path.c_str(), open_mode);
if (output_file.good() && open_mode != std::ios_base::app) {
output_file << "Tag,Provider,Kind,Groups,Runtime,GFLOPs\n";
}
}
// Decide how to initialize the problems
if (!benchmark_path.empty()) {
if (!benchmark_problems()) {
error = true;
problem_sizes.clear();
return;
}
}
else {
randomize_problems(cmd);
}
}
void randomize_problems(cutlass::CommandLine &cmd) {
//
// For now, randomly choose the problem sizes.
//
int cmd_line_m = -1;
int cmd_line_n = -1;
int cmd_line_k = -1;
cmd.get_cmd_line_argument("m", cmd_line_m);
cmd.get_cmd_line_argument("n", cmd_line_n);
cmd.get_cmd_line_argument("k", cmd_line_k);
// SYR2K is defined via only N and K.
if (cmd_line_m != -1) {
std::cerr << "Parameter M is ignored for SYR2K\n";
error = true;
return;
}
problem_sizes.reserve(problem_count);
for (int i = 0; i < problem_count; ++i) {
int n = cmd_line_n;
int k = cmd_line_k;
if (n < 1) {
n = alignment * ((rand() % 256) + 1);
}
if (k < 1) {
k = alignment * ((rand() % 256) + 1);
}
// SYR2K is defined only in terms of N and K. Replicate N into
// the SYR2K-N dimension.
cutlass::gemm::GemmCoord problem(n, n, k);
problem_sizes.push_back(problem);
}
}
/// Load a benchmark
bool benchmark_problems() {
std::ifstream file(benchmark_path);
if (!file.good()) {
return false;
}
while (file.good()) {
int idx = -1;
std::string extent_str;
file >> idx >> extent_str;
if (idx < 0 || extent_str.empty()) {
break;
}
cutlass::gemm::GemmCoord extent;
std::vector<std::string> tokens;
cutlass::CommandLine::tokenize(tokens, extent_str, 'x');
for (int i = 0; i < int(tokens.size()); ++i) {
int x = std::atoi(tokens.at(i).c_str());
// round up
if (x % alignment) {
x += (alignment - (x % alignment));
}
extent.at(i) = x;
}
if (extent.product()) {
problem_sizes.push_back(extent);
}
}
problem_count = int(problem_sizes.size());
return true;
}
/// Prints the usage statement.
std::ostream & print_usage(std::ostream &out) const {
out << "38_syr2k_grouped\n\n"
<< " This example profiles the performance of a 'grouped' SYR2K kernel. This example closely follows 24_gemm_grouped\n\n"
<< "Options:\n\n"
<< " --help If specified, displays this usage statement.\n\n"
<< " --benchmark=<str> Executes a benchmark problem size.\n"
<< " --output_file=<str> Path to a CSV file to output results. If it exists already, results are appended.\n"
<< " --tag=<str> String tag to prepend to the CSV file.\n"
<< " --groups=<int> Number of individual SYR2K problems (default: --groups=15)\n"
<< " --m=<int> Sets the M dimension for all groups. Otherwise, it is selected randomly\n"
<< " --n=<int> Sets the N dimension for all groups. Otherwise, it is selected randomly\n"
<< " --k=<int> Sets the K dimension for all groups. Otherwise, it is selected randomly\n"
<< " --alpha=<f32> Epilogue scalar alpha (real part)\n"
<< " --beta=<f32> Epilogue scalar beta (real part)\n"
<< " --scheduler-modes=<str> List of scheduler modes to be profile for grouped GEMM scheduler (default: --scheduler_modes=kDeviceOnly)\n"
<< " --iterations=<int> Number of profiling iterations to perform.\n"
<< " --reference-check=<bool> If true, performs reference check.\n"
<< " --verbose=<bool> If true, prints problem sizes and batching structure.\n"
<< " --profile-initialization=<bool> If true, profiles the device-level kernel's initialization.\n"
<< " --sort-problems=<bool> If true, sorts problem sizes in descending order of SYR2K-K dimension.\n";
out << "\n\nExamples:\n\n"
<< "# Runs a grouped SYR2K with 100 random problem sizes\n"
<< "$ ./examples/38_syr2k_grouped/38_syr2k_grouped --groups=100\n\n"
<< "# Runs a grouped SYR2K with 100 random problem sizes (with K dimension equal to 1024)\n"
<< "$ ./examples/38_syr2k_grouped/38_syr2k_grouped --groups=100 --k=1024 --verbose=true\n\n"
<< "# Runs a grouped SYR2K that is equivalent to a batched SYR2K\n"
<< "$ ./examples/38_syr2k_grouped/38_syr2k_grouped --groups=100 --n=1024 --k=1024 --verbose=true\n\n"
<< "# Runs a grouped SYR2K with each different scheduler mode\n"
<< "$ ./examples/38_syr2k_grouped/38_syr2k_grouped --scheduler-modes=all\n\n"
<< "# Runs a grouped SYR2K with each different scheduler mode and profiles host-side initialization time\n"
<< "$ ./examples/38_syr2k_grouped/38_syr2k_grouped --scheduler-modes=all --profile-initialization=true\n\n"
<< "# Runs a grouped SYR2K problem given an externally supplied benchmark file. This is a text file in which\n"
<< "# Each line contains a unique group index and an MxNxK triple indicating problemsize. NOTE that the\n"
<< "# GEMM-M and GEMM-N dimensions must match.\n"
<< "#\n"
<< "# For example, assume the following are the contents of 'problems.txt'\n"
<< "#\n"
<< "# 0 256x256x520\n"
<< "# 1 264x264x1024\n"
<< "# 2 48x48x1024\n"
<< "#\n"
<< "$ ./examples/38_syr2k_grouped/38_syr2k_grouped --benchmark=problems.txt\n\n"
<< "# Execute Grouped SYR2K and profile with NSight\n"
<< "$ nv-nsight-cu-cli ./examples/38_syr2k_grouped/38_syr2k_grouped --n=256 --k=256 --verbose=true --iterations=1 --reference-check=false\n\n";
return out;
}
/// Compute performance in GFLOP/s
double gflops(double runtime_s) const {
// Number of real-valued multiply-adds
int64_t fmas = int64_t();
for (auto const & problem : problem_sizes) {
fmas += problem.product();
}
// SYR2K is defined as (A x BT) + (B x AT), so the number of FMAs is twice that in a GEMM
fmas *= 2;
// Two flops per multiply-add
return 2.0 * double(fmas) / double(1.0e9) / runtime_s;
}
};
///////////////////////////////////////////////////////////////////////////////////////////////////
template <typename Rank2K>
class BaseTestbed {
public:
//
// Type definitions
//
using ElementA = typename Rank2K::ElementA;
using ElementB = typename Rank2K::ElementB;
using ElementC = typename Rank2K::ElementC;
using ElementAccumulator = typename Rank2K::ElementAccumulator;
using EpilogueOutputOp = typename Rank2K::Rank2Kkernel::Epilogue::OutputOp;
using ElementCompute = typename EpilogueOutputOp::ElementCompute;
using LayoutA = typename Rank2K::LayoutA;
using LayoutB = typename Rank2K::LayoutB;
using LayoutC = typename Rank2K::LayoutC;
using MatrixCoord = typename LayoutC::TensorCoord;
//
// Data members
//
Options & options;
/// Initialization
cutlass::Distribution::Kind init_A;
cutlass::Distribution::Kind init_B;
cutlass::Distribution::Kind init_C;
uint32_t seed;
cutlass::DeviceAllocation<cutlass::gemm::GemmCoord> problem_sizes_device;
std::vector<int64_t> offset_A;
std::vector<int64_t> offset_B;
std::vector<int64_t> offset_C;
std::vector<int64_t> offset_D;
std::vector<int64_t> lda_host;
std::vector<int64_t> ldb_host;
std::vector<int64_t> ldc_host;
std::vector<int64_t> ldd_host;
cutlass::DeviceAllocation<int64_t> lda;
cutlass::DeviceAllocation<int64_t> ldb;
cutlass::DeviceAllocation<int64_t> ldc;
cutlass::DeviceAllocation<int64_t> ldd;
cutlass::DeviceAllocation<ElementA> block_A;
cutlass::DeviceAllocation<ElementB> block_B;
cutlass::DeviceAllocation<ElementC> block_C;
cutlass::DeviceAllocation<ElementC> block_D;
cutlass::DeviceAllocation<ElementA *> ptr_A;
cutlass::DeviceAllocation<ElementB *> ptr_B;
cutlass::DeviceAllocation<ElementC *> ptr_C;
cutlass::DeviceAllocation<ElementC *> ptr_D;
BaseTestbed(
Options &options_,
cutlass::Distribution::Kind init_A_ = cutlass::Distribution::Uniform,
cutlass::Distribution::Kind init_B_ = cutlass::Distribution::Uniform,
cutlass::Distribution::Kind init_C_ = cutlass::Distribution::Uniform,
uint32_t seed_ = 3080
):
options(options_), init_A(init_A_), init_B(init_B_), init_C(init_C_), seed(seed_) { }
int problem_count() const {
return options.problem_count;
}
/// Helper to initialize a tensor view
template <typename Element>
void initialize_tensor(
Element *ptr,
size_t capacity,
cutlass::Distribution::Kind dist_kind,
uint32_t seed) {
if (dist_kind == cutlass::Distribution::Uniform) {
Element scope_max, scope_min;
int bits_input = cutlass::sizeof_bits<Element>::value;
int bits_output = cutlass::sizeof_bits<ElementC>::value;
if (bits_input == 1) {
scope_max = 2;
scope_min = 0;
} else if (bits_input <= 8) {
scope_max = 2;
scope_min = -2;
} else if (bits_output == 16) {
if (cutlass::sizeof_bits<ElementAccumulator>::value <= 16) {
scope_max = 5;
scope_min = -5;
}
else {
scope_max = 8;
scope_min = -8;
}
} else {
scope_max = 8;
scope_min = -8;
}
cutlass::reference::device::BlockFillRandomUniform(
ptr, capacity, seed, scope_max, scope_min, 0);
}
else if (dist_kind == cutlass::Distribution::Gaussian) {
cutlass::reference::device::BlockFillRandomGaussian(
ptr, capacity, seed, Element(), Element(0.5f));
}
else if (dist_kind == cutlass::Distribution::Sequential) {
// Fill with increasing elements
cutlass::reference::device::BlockFillSequential(
ptr, capacity, Element(1), Element());
}
else {
// Fill with all 1s
cutlass::reference::device::BlockFillSequential(
ptr, capacity, Element(), Element(1));
}
}
/// Allocates device-side data
void allocate() {
int64_t total_elements_A = 0;
int64_t total_elements_B = 0;
int64_t total_elements_C = 0;
int64_t total_elements_D = 0;
lda_host.resize(problem_count());
ldb_host.resize(problem_count());
ldc_host.resize(problem_count());
ldd_host.resize(problem_count());
for (int32_t i = 0; i < problem_count(); ++i) {
auto problem = options.problem_sizes.at(i);
lda_host.at(i) = LayoutA::packed({problem.n(), problem.k()}).stride(0);
ldb_host.at(i) = LayoutB::packed({problem.n(), problem.k()}).stride(0);
ldc_host.at(i) = LayoutC::packed({problem.n(), problem.n()}).stride(0);
ldd_host.at(i) = LayoutC::packed({problem.n(), problem.n()}).stride(0);
offset_A.push_back(total_elements_A);
offset_B.push_back(total_elements_B);
offset_C.push_back(total_elements_C);
offset_D.push_back(total_elements_D);
int64_t elements_A = problem.n() * problem.k();
int64_t elements_B = problem.n() * problem.k();
int64_t elements_C = problem.n() * problem.n();
int64_t elements_D = problem.n() * problem.n();
total_elements_A += elements_A;
total_elements_B += elements_B;
total_elements_C += elements_C;
total_elements_D += elements_D;
}
lda.reset(problem_count());
ldb.reset(problem_count());
ldc.reset(problem_count());
ldd.reset(problem_count());
block_A.reset(total_elements_A);
block_B.reset(total_elements_B);
block_C.reset(total_elements_C);
block_D.reset(total_elements_D);
}
/// Initializes device-side data
void initialize() {
problem_sizes_device.reset(problem_count());
problem_sizes_device.copy_from_host(options.problem_sizes.data());
lda.copy_from_host(lda_host.data());
ldb.copy_from_host(ldb_host.data());
ldc.copy_from_host(ldc_host.data());
ldd.copy_from_host(ldd_host.data());
//
// Assign pointers
//
std::vector<ElementA *> ptr_A_host(problem_count());
std::vector<ElementB *> ptr_B_host(problem_count());
std::vector<ElementC *> ptr_C_host(problem_count());
std::vector<ElementC *> ptr_D_host(problem_count());
for (int32_t i = 0; i < problem_count(); ++i) {
ptr_A_host.at(i) = block_A.get() + offset_A.at(i);
ptr_B_host.at(i) = block_B.get() + offset_B.at(i);
ptr_C_host.at(i) = block_C.get() + offset_C.at(i);
ptr_D_host.at(i) = block_D.get() + offset_D.at(i);
}
ptr_A.reset(problem_count());
ptr_A.copy_from_host(ptr_A_host.data());
ptr_B.reset(problem_count());
ptr_B.copy_from_host(ptr_B_host.data());
ptr_C.reset(problem_count());
ptr_C.copy_from_host(ptr_C_host.data());
ptr_D.reset(problem_count());
ptr_D.copy_from_host(ptr_D_host.data());
//
// Initialize the problems of the workspace
//
initialize_tensor(block_A.get(), block_A.size(), init_A, seed * 2021);
initialize_tensor(block_B.get(), block_B.size(), init_B, seed * 2022);
initialize_tensor(block_C.get(), block_C.size(), init_C, seed * 2023);
cutlass::reference::device::BlockFillSequential(
block_D.get(), block_D.size(), ElementC(), ElementC());
}
/// Verifies the result is a SYR2K
bool verify() {
bool passed = true;
for (int32_t i = 0; i < problem_count(); ++i) {
cutlass::gemm::GemmCoord problem = options.problem_sizes.at(i);
LayoutA layout_A(lda_host.at(i));
LayoutB layout_B(ldb_host.at(i));
LayoutC layout_C(ldc_host.at(i));
LayoutC layout_D(ldd_host.at(i));
cutlass::HostTensor<ElementA, LayoutA> host_A(
typename LayoutA::TensorCoord(problem.n(), problem.k()), /*device_backed=*/false);
cutlass::HostTensor<ElementB, LayoutB> host_B(
typename LayoutB::TensorCoord(problem.n(), problem.k()), /*device_backed=*/false);
cutlass::HostTensor<ElementC, LayoutC> host_C(
typename LayoutC::TensorCoord(problem.n(), problem.n()), /*device_backed=*/false);
cutlass::HostTensor<ElementC, LayoutC> host_D(
typename LayoutC::TensorCoord(problem.n(), problem.n()), /*device_backed=*/false);
cutlass::device_memory::copy_to_host(host_A.host_data(), block_A.get() + offset_A.at(i), problem.n() * problem.k());
cutlass::device_memory::copy_to_host(host_B.host_data(), block_B.get() + offset_B.at(i), problem.n() * problem.k());
cutlass::device_memory::copy_to_host(host_C.host_data(), block_C.get() + offset_C.at(i), problem.n() * problem.n());
cutlass::reference::host::BlockFillSequential(
host_D.host_data(), problem.n() * problem.n(), ElementC(), ElementC());
MatrixCoord extent_C{problem.n(), problem.n()};
// Reference Rank2K
cutlass::reference::host::Rank2KComplex<
ElementA, LayoutA,
ElementB, LayoutB,
ElementC, LayoutC,
ElementC, ElementAccumulator
>(
problem,
(double)options.alpha,
host_A.host_view(),
Rank2K::kTransformA,
host_B.host_view(),
Rank2K::kTransformB,
(double)options.beta,
host_C.host_view(),
host_D.host_view(),
ElementAccumulator(0),
Rank2K::kFillModeC,
Rank2K::kBlasMode
);
// Copy to host memory
std::vector<ElementC> matrix_D(layout_D.capacity(extent_C));
cutlass::device_memory::copy_to_host(matrix_D.data(), block_D.get() + offset_D.at(i), matrix_D.size());
cutlass::TensorView<ElementC, LayoutC> view_D(matrix_D.data(), layout_D, extent_C);
cutlass::TensorView<ElementC, LayoutC> view_Ref = host_D.host_view();
// Reference check
passed = cutlass::reference::host::TensorEquals(view_D, view_Ref);
if (!passed) {
std::cerr << "\n***\nError - problem " << i << " failed the QA check\n***\n" << std::endl;
return passed;
}
}
return passed;
}
};
template <typename Rank2K>
class TestbedConventional : BaseTestbed<Rank2K> {
public:
TestbedConventional(
Options &options_,
cutlass::Distribution::Kind init_A_ = cutlass::Distribution::Uniform,
cutlass::Distribution::Kind init_B_ = cutlass::Distribution::Uniform,
cutlass::Distribution::Kind init_C_ = cutlass::Distribution::Uniform,
uint32_t seed_ = 3080
): BaseTestbed<Rank2K>(options_, init_A_, init_B_, init_C_, seed_) {}
/// Verbose printing of problem sizes
void print_problem_sizes() {
// Print groups
std::cout << this->problem_count() << " groups:\n";
int32_t idx = 0;
int64_t total_tiles = 0;
for (auto const & problem : this->options.problem_sizes) {
int tiles =
((problem.m() + Rank2K::ThreadblockShape::kM - 1) / Rank2K::ThreadblockShape::kM) *
((problem.n() + Rank2K::ThreadblockShape::kN - 1) / Rank2K::ThreadblockShape::kN);
total_tiles += tiles;
std::cout << " [" << idx << "]: "
<< problem.m() << "-by-" << problem.n() << "-by-" << problem.k()
<< " (" << tiles << " threadblock tiles)" << "\n";
++idx;
}
std::cout << std::endl;
}
/// Executes a conventional SYR2K kernel.
Result profile() {
std::cout << "Conventional Rank2K:\n"
<< "====================================================" << std::endl;
Result result;
result.passed = false;
// Initialize the problem
this->allocate();
this->initialize();
if (this->options.verbose) {
print_problem_sizes();
}
//
// Create CUDA streams to maximize concurrency of SYR2K kernels
//
int32_t effective_streams = (this->options.cuda_streams ? this->options.cuda_streams : 1);
std::vector<cudaStream_t> cuda_streams;
char const *provider = "CUTLASS";
//
// Warmup run
//
if (this->options.cuda_streams) {
for (int i = 0; i < this->options.cuda_streams; ++i) {
cudaStream_t stream;
result.error = cudaStreamCreate(&stream);
if (result.error != cudaSuccess) {
std::cerr << "Failed to create CUDA stream." << std::endl;
return result;
}
cuda_streams.push_back(stream);
}
}
else {
cuda_streams.push_back(nullptr);
}
// Use 'D' for the in/out workspace
this->block_D.copy_from_device(this->block_C.get());
for (size_t i = 0; i < this->options.problem_sizes.size(); ++i) {
cutlass::gemm::GemmCoord const & problem = this->options.problem_sizes[i];
int32_t batch_count = 1;
int64_t lda = this->lda_host.at(i);
int64_t ldb = this->ldb_host.at(i);
int64_t ldc = this->ldc_host.at(i);
typename Rank2K::ElementA* ptrA = this->block_A.get() + this->offset_A.at(i);
typename Rank2K::ElementB* ptrB = this->block_B.get() + this->offset_B.at(i);
typename Rank2K::ElementC* ptrC = this->block_C.get() + this->offset_C.at(i);
typename Rank2K::ElementC* ptrD = this->block_D.get() + this->offset_D.at(i);
//
// Initialize the CUTLASS SYR2K operator
//
// Configure the SYR2K arguments
typename Rank2K::EpilogueOutputOp::Params epilogue_op(this->options.alpha, this->options.beta);
typename Rank2K::Arguments arguments{
cutlass::gemm::GemmUniversalMode::kGemm,
problem,
batch_count,
epilogue_op,
(void const *)ptrA,
(void const *)ptrB,
(void const *)ptrC,
(void *)ptrD,
int64_t(),
int64_t(),
int64_t(),
int64_t(),
int64_t(lda),
int64_t(ldb),
int64_t(ldc),
int64_t(ldc)
};
Rank2K rank2k_op;
cutlass::Status status = rank2k_op.initialize(arguments);
if (status != cutlass::Status::kSuccess) {
std::cerr << "CUTLASS error on line " << __LINE__ << std::endl;
return result;
}
status = rank2k_op();
if (status != cutlass::Status::kSuccess) {
std::cerr << "CUTLASS error on line " << __LINE__ << std::endl;
return result;
}
}
//
// Wait for completion
//
result.error = cudaDeviceSynchronize();
if (result.error != cudaSuccess) {
std::cerr << "Kernel execution error: " << cudaGetErrorString(result.error);
return result;
}
//
// Construct events
//
cudaEvent_t events[2];
for (auto & event : events) {
result.error = cudaEventCreate(&event);
if (result.error != cudaSuccess) {
std::cerr << "cudaEventCreate() failed: " << cudaGetErrorString(result.error) << std::endl;
return -1;
}
}
//
// Wait for completion
//
result.error = cudaDeviceSynchronize();
if (result.error != cudaSuccess) {
std::cerr << "Kernel execution error: " << cudaGetErrorString(result.error);
return result;
}
// Record an event at the start of a series of SYR2K operations
result.error = cudaEventRecord(events[0]);
if (result.error != cudaSuccess) {
std::cerr << "cudaEventRecord() failed: " << cudaGetErrorString(result.error) << std::endl;
return result;
}
//
// Run profiling loop
//
size_t last_stream_idx = 0;
for (int iter = 0; iter < this->options.iterations; ++iter) {
for (size_t i = 0; i < this->options.problem_sizes.size(); ++i) {
cutlass::gemm::GemmCoord const & problem = this->options.problem_sizes[i];
int32_t batch_count = 1;
int64_t lda = this->lda_host.at(i);
int64_t ldb = this->ldb_host.at(i);
int64_t ldc = this->ldc_host.at(i);
typename Rank2K::ElementA* ptrA = this->block_A.get() + this->offset_A.at(i);
typename Rank2K::ElementB* ptrB = this->block_B.get() + this->offset_B.at(i);
typename Rank2K::ElementC* ptrC = this->block_C.get() + this->offset_C.at(i);
typename Rank2K::ElementC* ptrD = this->block_D.get() + this->offset_D.at(i);
last_stream_idx = (i % effective_streams);
//
// Initialize the CUTLASS SYR2K operator
//
// Configure the SYR2K arguments
typename Rank2K::EpilogueOutputOp::Params epilogue_op(this->options.alpha, this->options.beta);
typename Rank2K::Arguments arguments{
cutlass::gemm::GemmUniversalMode::kGemm,
problem,
batch_count,
epilogue_op,
(void const *)ptrA,
(void const *)ptrB,
(void const *)ptrC,
(void *)ptrD,
int64_t(),
int64_t(),
int64_t(),
int64_t(),
int64_t(lda),
int64_t(ldb),
int64_t(ldc),
int64_t(ldc)
};
Rank2K rank2k_op;
cutlass::Status status = rank2k_op.initialize(arguments);
if (status != cutlass::Status::kSuccess) {
std::cerr << "CUTLASS error on line " << __LINE__ << std::endl;
return result;
}
status = rank2k_op(cuda_streams[last_stream_idx]);
if (status != cutlass::Status::kSuccess) {
std::cerr << "CUTLASS error on line " << __LINE__ << std::endl;
return result;
}
}
}
//
// Stop profiling loop
//
// Record an event when the SYR2K operations have been launched.
result.error = cudaEventRecord(events[1]);
if (result.error != cudaSuccess) {
std::cerr << "cudaEventRecord() failed: " << cudaGetErrorString(result.error) << std::endl;
return result;
}
//
// Wait for work to be completed
//
result.error = cudaDeviceSynchronize();
if (result.error != cudaSuccess) {
std::cerr << "Kernel execution error: " << cudaGetErrorString(result.error);
return result;
}
// Measure elapsed runtime
float runtime_ms = 0;
result.error = cudaEventElapsedTime(&runtime_ms, events[0], events[1]);
if (result.error != cudaSuccess) {
std::cerr << "cudaEventElapsed() failed: " << cudaGetErrorString(result.error) << std::endl;
return result;
}
// Compute average runtime and GFLOPs.
result.runtime_ms = double(runtime_ms) / double(this->options.iterations);
result.gflops = this->options.gflops(result.runtime_ms / 1000.0);