GPU vs CPU math test complete

This commit is contained in:
2025-10-29 03:10:47 +04:00
parent d6dd49c9da
commit 2955fbbe42
10 changed files with 694 additions and 271 deletions

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#ifndef DEVICE_H
#define DEVICE_H
#include <CL/cl.h>
#include <iostream>
#include <ostream>
#include <string>
#include <vector>
#include "opencl.hpp"
class CalcEngine {
private:
cl_platform_id platform;
cl_device_id device;
cl_context context;
std::string device_name;
void initializeOpenCL() {
OpenCL::checkError(clGetPlatformIDs(1, &platform, nullptr),
"clGetPlatformIDs");
OpenCL::checkError(
clGetDeviceIDs(platform, CL_DEVICE_TYPE_DEFAULT, 1, &device, nullptr),
"clGetDeviceIDs");
char name[128];
clGetDeviceInfo(device, CL_DEVICE_NAME, sizeof(name), name, nullptr);
device_name = name;
context = clCreateContext(nullptr, 1, &device, nullptr, nullptr, nullptr);
if (!context) {
throw OpenCLException(-1, "clCreateContext");
}
std::cout << "OpenCL initialized successfully" << std::endl;
}
void cleanup() {
if (context)
clReleaseContext(context);
}
public:
CalcEngine() { initializeOpenCL(); }
~CalcEngine() { cleanup(); }
const cl_platform_id getPlatform() const { return platform; };
const cl_device_id getDevice() const { return device; };
const cl_context getContext() const { return context; };
const std::string getDeviceName() const { return device_name; };
void printDeviceInfo() const {
std::cout << "Using OpenCL device: " << device_name << std::endl;
}
cl_mem createBuffer(cl_mem_flags flags, size_t size, void *host_ptr) {
cl_int ret;
cl_mem buffer = clCreateBuffer(context, flags, size, host_ptr, &ret);
OpenCL::checkError(ret, "clCreateBuffer");
return buffer;
}
cl_kernel loadKernel(const std::string &filename) {
std::string kernelSource = OpenCL::readFile(filename);
const char *source_str = kernelSource.c_str();
cl_program program =
clCreateProgramWithSource(context, 1, &source_str, nullptr, nullptr);
if (!program) {
throw OpenCLException(-1, "clCreateProgramWithSource");
}
cl_int ret = clBuildProgram(program, 1, &device, nullptr, nullptr, nullptr);
if (ret != CL_SUCCESS) {
size_t log_size;
clGetProgramBuildInfo(program, device, CL_PROGRAM_BUILD_LOG, 0, nullptr,
&log_size);
std::vector<char> log(log_size);
clGetProgramBuildInfo(program, device, CL_PROGRAM_BUILD_LOG, log_size,
log.data(), nullptr);
std::cerr << "Build log:\n" << log.data() << std::endl;
throw OpenCLException(ret, "clBuildProgram");
}
cl_kernel kernel = clCreateKernel(program, "matrix_mult", nullptr);
if (!kernel) {
throw OpenCLException(-1, "clCreateKernel");
}
std::cout << "Kernel loaded and compiled successfully" << std::endl;
return kernel;
}
void runKernel(cl_command_queue queue, cl_kernel kernel, int M, int N) {
size_t globalSize[2] = {static_cast<size_t>(M), static_cast<size_t>(N)};
OpenCL::checkError(clEnqueueNDRangeKernel(queue, kernel, 2, nullptr,
globalSize, nullptr, 0, nullptr,
nullptr),
"clEnqueueNDRangeKernel");
}
void readResult(cl_command_queue queue, cl_mem buf,
std::vector<float> &result) {
OpenCL::checkError(clEnqueueReadBuffer(queue, buf, CL_TRUE, 0,
result.size() * sizeof(float),
result.data(), 0, nullptr, nullptr),
"clEnqueueReadBuffer");
}
void setKernelArgs(cl_kernel kernel, cl_mem bufA, cl_mem bufB, cl_mem bufC,
int M, int N, int K) {
OpenCL::checkError(clSetKernelArg(kernel, 0, sizeof(cl_mem), &bufA),
"clSetKernelArg for A");
OpenCL::checkError(clSetKernelArg(kernel, 1, sizeof(cl_mem), &bufB),
"clSetKernelArg for B");
OpenCL::checkError(clSetKernelArg(kernel, 2, sizeof(cl_mem), &bufC),
"clSetKernelArg for C");
OpenCL::checkError(clSetKernelArg(kernel, 3, sizeof(int), &M),
"clSetKernelArg for M");
OpenCL::checkError(clSetKernelArg(kernel, 4, sizeof(int), &N),
"clSetKernelArg for N");
OpenCL::checkError(clSetKernelArg(kernel, 5, sizeof(int), &K),
"clSetKernelArg for K");
}
};
#endif

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src/kernels/matrix.cl Normal file
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__kernel void mult(__global float* A, __global float* B, __global float* C,
int M, int N, int K) {
const int tile_size = 16;
int local_i = get_local_id(0);
int local_j = get_local_id(1);
int local_size_i = get_local_size(0);
int local_size_j = get_local_size(1);
int global_i = get_group_id(0) * local_size_i + local_i;
int global_j = get_group_id(1) * local_size_j + local_j;
__local float tile_A[16][16];
__local float tile_B[16][16];
float sum = 0.0f;
int num_tiles = (K + tile_size - 1) / tile_size;
for (int tile = 0; tile < num_tiles; tile++) {
int tile_offset = tile * tile_size;
int load_i_A = tile_offset + local_i;
int load_j_A = tile_offset + local_j;
if (global_i < M && load_j_A < K) {
tile_A[local_j][local_i] = A[global_i * K + load_j_A];
} else {
tile_A[local_j][local_i] = 0.0f;
}
int load_i_B = tile_offset + local_i;
int load_j_B = tile_offset + local_j;
if (load_i_B < K && global_j < N) {
tile_B[local_j][local_i] = B[load_i_B * N + global_j];
} else {
tile_B[local_j][local_i] = 0.0f;
}
barrier(CLK_LOCAL_MEM_FENCE);
#pragma unroll
for (int k = 0; k < tile_size; k++) {
sum += tile_A[k][local_i] * tile_B[local_j][k];
}
barrier(CLK_LOCAL_MEM_FENCE);
}
if (global_i < M && global_j < N) {
C[global_i * N + global_j] = sum;
}
}
__kernel void mult_sc(__global float* A, __global float* B, float scalar, int M, int N) {
int i = get_global_id(0);
int j = get_global_id(1);
B[i * N + j] = A[i * N + j] * scalar;
}
__kernel void add(__global float* A, __global float* B, __global float* C, float a, float b, int M, int N) {
int i = get_global_id(0);
int j = get_global_id(1);
C[i * N + j] = (A[i * N + j] * a) + (B[i * N + j] * b);
}
__kernel void add_sc(__global float* A, __global float* B, float scalar, int M, int N) {
int i = get_global_id(0);
int j = get_global_id(1);
B[i * N + j] = A[i * N + j] + scalar;
}

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#include <CL/cl.h> #include <chrono>
#include <iostream>
#include <random>
#include <stdexcept> #include <stdexcept>
#include <vector> #include <vector>
#include "device.hpp" #include "./math/math.hpp"
#include "matrix.hpp"
class MutableMatrix : public Matrix { typedef Matrices::CPU Matrix;
private: typedef MutableMatrices::CPU MutableMatrix;
CalcEngine *calcEngine;
cl_command_queue queue;
cl_kernel kernel;
public: OpenCL openCL;
MutableMatrix(CalcEngine &calcEngine, size_t rows, size_t cols, float *matrix)
: Matrix(calcEngine, CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR, rows, cols, std::vector<float> generateRandomMatrix(int rows, int cols) {
matrix) { std::random_device rd;
this->calcEngine = &calcEngine; std::mt19937 gen(rd());
kernel = calcEngine.loadKernel("matrix_mult.cl"); std::uniform_real_distribution<float> dis(-1.0f, 1.0f);
queue = clCreateCommandQueue(calcEngine.getContext(),
calcEngine.getDevice(), 0, nullptr); std::vector<float> matrix(rows * cols);
if (!queue) { for (int i = 0; i < rows * cols; ++i) {
throw OpenCLException(-1, "clCreateCommandQueue"); matrix[i] = dis(gen);
}
} }
return matrix;
~MutableMatrix() { }
if (queue) std::vector<float> generateIdentityMatrix(int size) {
clReleaseCommandQueue(queue); std::vector<float> matrix(size * size, 0.0f);
for (int i = 0; i < size; ++i) {
matrix[i * size + i] = 1.0f;
} }
return matrix;
void mult_by(Matrix &m) { }
if (cols != m.getRows()) {
throw std::invalid_argument("Invalid matrix dimensions");
}
cl_mem b =
calcEngine->createBuffer(CL_MEM_READ_WRITE | CL_MEM_COPY_HOST_PTR,
rows * m.getCols() * sizeof(float), nullptr);
calcEngine->setKernelArgs(kernel, buf, m.getBuf(), b, rows, m.getCols(),
cols);
calcEngine->runKernel(queue, kernel, rows, m.getCols());
clReleaseMemObject(buf);
buf = b;
}
std::vector<float> exportMatrix() {
std::vector<float> C(rows, cols);
calcEngine->readResult(queue, buf, C);
return C;
}
};
int main() { int main() {
CalcEngine calcEngine; const int SIZE = 1024;
calcEngine.printDeviceInfo();
float matrixA[2 * 3] = {1, 2, 3, 4, 5, 6}; std::cout << "Testing with " << SIZE << "x" << SIZE << " matrices..."
MutableMatrix a(calcEngine, 2, 3, matrixA); << std::endl;
float matrixB[3 * 2] = {1, 2, 3, 4, 5, 6}; std::vector<float> matrixA = generateRandomMatrix(SIZE, SIZE);
Matrix b(calcEngine, CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR, 3, 2, matrixB); std::vector<float> matrixB = generateRandomMatrix(SIZE, SIZE);
std::vector<float> matrixC = generateRandomMatrix(SIZE, SIZE);
a.mult_by(b); // std::vector<float> matrixA = generateIdentityMatrix(SIZE);
// std::vector<float> matrixB = generateIdentityMatrix(SIZE);
// std::vector<float> matrixC = generateIdentityMatrix(SIZE);
std::vector<float> v = a.exportMatrix(); // Тестирование на CPU
for (const auto &element : v) { {
std::cout << element << " "; std::cout << "\n=== CPU Version ===" << std::endl;
auto start = std::chrono::high_resolution_clock::now();
MutableMatrices::CPU a(SIZE, SIZE, matrixA);
Matrices::CPU b(SIZE, SIZE, matrixB);
Matrices::CPU c(SIZE, SIZE, matrixC);
auto gen_end = std::chrono::high_resolution_clock::now();
auto op_start = std::chrono::high_resolution_clock::now();
for (int i = 0; i < 10; i++) {
a.mult(b);
}
auto op_end = std::chrono::high_resolution_clock::now();
std::vector<float> v = a.toVector();
auto total_end = std::chrono::high_resolution_clock::now();
auto gen_duration =
std::chrono::duration_cast<std::chrono::milliseconds>(gen_end - start);
auto op_duration = std::chrono::duration_cast<std::chrono::milliseconds>(
op_end - op_start);
auto total_duration = std::chrono::duration_cast<std::chrono::milliseconds>(
total_end - start);
std::cout << "Matrix generation time: " << gen_duration.count() << " ms"
<< std::endl;
std::cout << "Operations time: " << op_duration.count() << " ms"
<< std::endl;
std::cout << "Total time: " << total_duration.count() << " ms" << std::endl;
std::cout << "First few elements: ";
for (int i = 0; i < 5 && i < v.size(); ++i) {
std::cout << v[i] << " ";
}
std::cout << std::endl;
}
// Тестирование на GPU
{
std::cout << "\n=== GPU Version ===" << std::endl;
auto start = std::chrono::high_resolution_clock::now();
MutableMatrices::GPU a(SIZE, SIZE, matrixA);
Matrices::GPU b(SIZE, SIZE, matrixB);
Matrices::GPU c(SIZE, SIZE, matrixC);
auto gen_end = std::chrono::high_resolution_clock::now();
auto op_start = std::chrono::high_resolution_clock::now();
for (int i = 0; i < 10; i++) {
a.mult(b);
}
auto op_end = std::chrono::high_resolution_clock::now();
std::vector<float> v = a.toVector();
auto total_end = std::chrono::high_resolution_clock::now();
auto gen_duration =
std::chrono::duration_cast<std::chrono::milliseconds>(gen_end - start);
auto op_duration = std::chrono::duration_cast<std::chrono::milliseconds>(
op_end - op_start);
auto total_duration = std::chrono::duration_cast<std::chrono::milliseconds>(
total_end - start);
std::cout << "Matrix generation time: " << gen_duration.count() << " ms"
<< std::endl;
std::cout << "Operations time: " << op_duration.count() << " ms"
<< std::endl;
std::cout << "Total time: " << total_duration.count() << " ms" << std::endl;
std::cout << "First few elements: ";
for (int i = 0; i < 5 && i < v.size(); ++i) {
std::cout << v[i] << " ";
}
std::cout << std::endl;
} }
return 0; return 0;

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#ifndef MATH_H
#define MATH_H
#define __CL_ENABLE_EXCEPTIONS
#include <CL/opencl.hpp>
#include "matrix.hpp"
#include "mutable_matrix.hpp"
#include "opencl/opencl.hpp"
#endif

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src/math/matrix.hpp Normal file
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#ifndef MATRIX_H
#define MATRIX_H
#include "./opencl/opencl.hpp"
#include <algorithm>
#include <memory>
#include <stdexcept>
#include <vector>
class IMatrix {
protected:
int rows;
int cols;
void validateDimensions(int rows, int cols) {
if (rows <= 0 || cols <= 0) {
throw std::invalid_argument("Matrix dimensions must be positive");
}
}
void checkIndices(int row, int col) const {
if (row < 0 || row >= rows || col < 0 || col >= cols) {
throw std::out_of_range("Matrix indices out of range");
}
}
public:
IMatrix(int rows, int cols) : rows(rows), cols(cols) {}
virtual ~IMatrix() = default;
virtual int getRows() const = 0;
virtual int getCols() const = 0;
virtual const std::vector<float> toVector() const = 0;
};
namespace Matrices {
class CPU;
class GPU : public IMatrix {
protected:
cl::Buffer *buffer;
cl::CommandQueue queue;
public:
GPU(int rows, int cols, const std::vector<float> &matrix)
: IMatrix(rows, cols), queue(openCL.getContext(), openCL.getDevice()) {
validateDimensions(rows, cols);
if (matrix.size() != static_cast<size_t>(rows * cols)) {
throw std::invalid_argument("Matrix data size doesn't match dimensions");
}
buffer = new cl::Buffer(
openCL.getContext(), CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR,
rows * cols * sizeof(float), const_cast<float *>(matrix.data()));
}
~GPU() { delete buffer; }
GPU(const GPU &) = delete;
GPU &operator=(const GPU &) = delete;
GPU(GPU &&other) = default;
GPU &operator=(GPU &&other) = default;
int getRows() const override { return rows; }
int getCols() const override { return cols; }
size_t getSize() const { return rows * cols; }
const cl::Buffer *getBuffer() const { return buffer; }
const std::vector<float> toVector() const {
std::vector<float> result(rows * cols);
queue.enqueueReadBuffer(*buffer, CL_TRUE, 0, rows * cols * sizeof(float),
result.data());
queue.finish();
return result;
}
CPU toCPU() const;
};
class CPU : public IMatrix {
protected:
std::vector<float> data;
public:
CPU(int rows, int cols, float value = 0.0f)
: IMatrix(rows, cols), data(rows * cols, value) {
validateDimensions(rows, cols);
}
CPU(int rows, int cols, const std::vector<float> &matrix)
: IMatrix(rows, cols), data(matrix) {
validateDimensions(rows, cols);
if (matrix.size() != static_cast<size_t>(rows * cols)) {
throw std::invalid_argument("Data size doesn't match matrix dimensions");
}
}
CPU(const CPU &) = default;
CPU &operator=(const CPU &) = default;
CPU(CPU &&) = default;
CPU &operator=(CPU &&) = default;
~CPU() override = default;
float &operator()(int row, int col) {
checkIndices(row, col);
return data[row * cols + col];
}
const float &operator()(int row, int col) const {
checkIndices(row, col);
return data[row * cols + col];
}
const std::vector<float> toVector() const { return data; }
int getRows() const override { return rows; }
int getCols() const override { return cols; }
size_t getSize() const { return data.size(); }
GPU toGPU(OpenCL &openCL) const { return GPU(rows, cols, data); }
};
CPU GPU::toCPU() const { return CPU(rows, cols, toVector()); }
} // namespace Matrices
#endif

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#ifndef MUTABLE_MATRIX_H
#define MUTABLE_MATRIX_H
#include "./opencl/opencl.hpp"
#include "matrix.hpp"
template <typename T> class IMutableMatrix {
static_assert(std::is_base_of<IMatrix, T>::value,
"T must be derived from IMatrix");
public:
virtual void mult(T &m) = 0;
virtual void mult(float s) = 0;
virtual void add(T &m, float a, float b) = 0;
virtual void add(float a) = 0;
void validateMultDimensions(T &a, T &b) {
if (a.getRows() != b.getCols()) {
throw std::invalid_argument(
"Invalid matrix dimensions for multiplication");
}
}
void validateSameDimensions(T &a, T &b) {
if (a.getRows() != b.getRows() || a.getCols() != b.getCols()) {
throw std::invalid_argument("Invalid matrix dimensions for addition");
}
}
};
namespace MutableMatrices {
class GPU : public Matrices::GPU, public IMutableMatrix<Matrices::GPU> {
private:
enum class Method { MULT, SCALAR_MULT, ADD, SCALAR_ADD };
std::unordered_map<Method, cl::Kernel> kernels;
std::unordered_map<Method, std::string> kernelsNames = {
{Method::MULT, "mult"},
{Method::SCALAR_MULT, "mult_sc"},
{Method::ADD, "add"},
{Method::SCALAR_ADD, "add_sc"}};
static void CL_CALLBACK releaseBuffer(cl_event event, cl_int status,
void *buf) {
if (status == CL_COMPLETE) {
// std::cout << "Kernel complete!" << std::endl;
delete buf;
}
}
public:
GPU(int rows, int cols, const std::vector<float> &matrix)
: Matrices::GPU(rows, cols, matrix) {
for (const auto &[method, kernelName] : kernelsNames) {
kernels[method] =
cl::Kernel(openCL.getProgram(OpenCL::Program::MATRIX), kernelName);
}
}
void mult(Matrices::GPU &m) {
validateMultDimensions(*this, m);
cl::Buffer *b = new cl::Buffer(openCL.getContext(), CL_MEM_READ_WRITE,
rows * m.getCols() * sizeof(float));
const int tile_size = 16;
cl::NDRange local_size(tile_size, tile_size);
cl::NDRange global_size(((rows + tile_size - 1) / tile_size) * tile_size,
((m.getCols() + tile_size - 1) / tile_size) *
tile_size);
kernels[Method::MULT].setArg(0, *buffer);
kernels[Method::MULT].setArg(1, *m.getBuffer());
kernels[Method::MULT].setArg(2, *b);
kernels[Method::MULT].setArg(3, rows);
kernels[Method::MULT].setArg(4, m.getCols());
kernels[Method::MULT].setArg(5, cols);
cl::Event event;
queue.enqueueNDRangeKernel(kernels[Method::MULT], cl::NullRange,
global_size, local_size, nullptr, &event);
event.setCallback(CL_COMPLETE, releaseBuffer, buffer);
buffer = b;
cols = m.getCols();
}
void mult(float scalar) {
cl::Buffer *b = new cl::Buffer(openCL.getContext(), CL_MEM_READ_WRITE,
rows * cols * sizeof(float));
kernels[Method::SCALAR_MULT].setArg(0, *buffer);
kernels[Method::SCALAR_MULT].setArg(1, *b);
kernels[Method::SCALAR_MULT].setArg(2, scalar);
kernels[Method::SCALAR_MULT].setArg(3, rows);
kernels[Method::SCALAR_MULT].setArg(4, cols);
cl::Event event;
queue.enqueueNDRangeKernel(kernels[Method::SCALAR_MULT], cl::NullRange,
cl::NDRange(rows, cols), cl::NullRange, nullptr,
&event);
event.setCallback(CL_COMPLETE, releaseBuffer, buffer);
buffer = b;
}
void add(Matrices::GPU &m, float a = 1.0f, float b = 1.0f) {
validateSameDimensions(*this, m);
cl::Buffer *buf = new cl::Buffer(openCL.getContext(), CL_MEM_READ_WRITE,
rows * cols * sizeof(float));
kernels[Method::ADD].setArg(0, *buffer);
kernels[Method::ADD].setArg(1, *m.getBuffer());
kernels[Method::ADD].setArg(2, *buf);
kernels[Method::ADD].setArg(3, a);
kernels[Method::ADD].setArg(4, b);
kernels[Method::ADD].setArg(5, rows);
kernels[Method::ADD].setArg(6, cols);
cl::Event event;
queue.enqueueNDRangeKernel(kernels[Method::ADD], cl::NullRange,
cl::NDRange(rows, cols), cl::NullRange, nullptr,
&event);
event.setCallback(CL_COMPLETE, releaseBuffer, buffer);
buffer = buf;
}
void add(float scalar) {
cl::Buffer *b = new cl::Buffer(openCL.getContext(), CL_MEM_READ_WRITE,
rows * cols * sizeof(float));
kernels[Method::SCALAR_ADD].setArg(0, *buffer);
kernels[Method::SCALAR_ADD].setArg(1, *b);
kernels[Method::SCALAR_ADD].setArg(2, scalar);
kernels[Method::SCALAR_ADD].setArg(3, rows);
kernels[Method::SCALAR_ADD].setArg(4, cols);
cl::Event event;
queue.enqueueNDRangeKernel(kernels[Method::SCALAR_ADD], cl::NullRange,
cl::NDRange(rows, cols), cl::NullRange, nullptr,
&event);
event.setCallback(CL_COMPLETE, releaseBuffer, buffer);
buffer = b;
}
};
class CPU : public Matrices::CPU, public IMutableMatrix<Matrices::CPU> {
public:
CPU(int rows, int cols, const std::vector<float> &matrix)
: Matrices::CPU(rows, cols, matrix) {}
void mult(Matrices::CPU &m) {
validateMultDimensions(*this, m);
std::vector<float> result(rows * m.getCols(), 0.0f);
for (int i = 0; i < rows; i++) {
for (int j = 0; j < m.getCols(); j++) {
float sum = 0.0f;
for (int k = 0; k < cols; k++) {
sum += (*this)(i, k) * m(k, j);
}
result[i * m.getCols() + j] = sum;
}
}
data = std::move(result);
cols = m.getCols();
}
void mult(float scalar) {
for (int i = 0; i < rows; i++) {
for (int j = 0; j < cols; j++) {
data[i * cols + j] *= scalar;
}
}
}
void add(Matrices::CPU &m, float a = 1.0f, float b = 1.0f) {
validateSameDimensions(*this, m);
std::vector<float> result(rows * cols, 0.0f);
for (int i = 0; i < rows; i++) {
for (int j = 0; j < cols; j++) {
result[i * cols + j] = ((*this)(i, j) * a) + (m(i, j) * b);
}
}
data = std::move(result);
}
void add(float scalar) {
for (int i = 0; i < rows; i++) {
for (int j = 0; j < cols; j++) {
data[i * cols + j] += scalar;
}
}
}
};
}; // namespace MutableMatrices
#endif

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#ifndef OPENCL_H
#define OPENCL_H
#include <CL/opencl.hpp>
#include <fstream>
#include <iostream>
#include <memory>
#include <sstream>
#include <stdexcept>
#include <unordered_map>
class OpenCL {
public:
enum class Program { MATRIX, MATH, IMAGE_PROCESSING };
private:
cl::Device device;
cl::Context context;
cl::CommandQueue defaultQueue;
std::unordered_map<Program, cl::Program> programs;
std::unordered_map<Program, std::string> programPaths = {
{Program::MATRIX, "./kernels/matrix.cl"}};
std::string readProgram(const std::string &filePath) {
std::ifstream file(filePath, std::ios::binary);
if (!file.is_open()) {
throw std::runtime_error("Cannot open file: " + filePath);
}
std::stringstream buffer;
buffer << file.rdbuf();
return buffer.str();
}
cl::Program compileProgram(const std::string &file) {
std::string source = readProgram(file);
cl::Program program(context, source);
try {
program.build({device});
} catch (cl::Error &e) {
std::string build_log =
program.getBuildInfo<CL_PROGRAM_BUILD_LOG>(device);
std::cerr << "Build log:\n" << build_log << std::endl;
throw;
}
return program;
}
void loadPrograms() {
for (const auto &[programType, filePath] : programPaths) {
try {
programs[programType] = compileProgram(filePath);
std::cout << "Loaded program: " << filePath << std::endl;
} catch (const std::exception &e) {
std::cerr << "Failed to load program " << filePath << ": " << e.what()
<< std::endl;
}
}
}
void initializeDevice() {
std::vector<cl::Platform> platforms;
cl::Platform::get(&platforms);
if (platforms.empty()) {
throw std::runtime_error("No OpenCL platforms found");
}
std::vector<cl::Device> devices;
bool deviceFound = false;
for (const auto &platform : platforms) {
try {
platform.getDevices(CL_DEVICE_TYPE_GPU, &devices);
if (!devices.empty()) {
deviceFound = true;
break;
}
} catch (const cl::Error &) {
continue;
}
}
if (!deviceFound) {
for (const auto &platform : platforms) {
try {
platform.getDevices(CL_DEVICE_TYPE_CPU, &devices);
if (!devices.empty()) {
deviceFound = true;
break;
}
} catch (const cl::Error &) {
continue;
}
}
}
if (!deviceFound) {
throw std::runtime_error("No suitable OpenCL devices found");
}
device = devices[0];
context = cl::Context(device);
defaultQueue = cl::CommandQueue(context, device);
std::cout << "Using device: " << device.getInfo<CL_DEVICE_NAME>()
<< "\nPlatform: " << platforms[0].getInfo<CL_PLATFORM_NAME>()
<< "\nCompute units: "
<< device.getInfo<CL_DEVICE_MAX_COMPUTE_UNITS>()
<< "\nGlobal memory: "
<< device.getInfo<CL_DEVICE_GLOBAL_MEM_SIZE>() / (1024 * 1024)
<< " MB" << std::endl;
}
public:
OpenCL() {
try {
initializeDevice();
loadPrograms();
} catch (const cl::Error &e) {
std::cerr << "OpenCL error: " << e.what() << " (" << e.err() << ")"
<< std::endl;
throw;
}
}
OpenCL(const OpenCL &) = delete;
OpenCL &operator=(const OpenCL &) = delete;
OpenCL(OpenCL &&) = delete;
OpenCL &operator=(OpenCL &&) = delete;
cl::Device &getDevice() { return device; }
cl::Context &getContext() { return context; }
cl::CommandQueue &getDefaultQueue() { return defaultQueue; }
cl::Program &getProgram(Program program) {
auto it = programs.find(program);
if (it == programs.end()) {
throw std::invalid_argument("Program not loaded: " +
std::to_string(static_cast<int>(program)));
}
return it->second;
}
void printDeviceInfo() const {
std::cout << "=== OpenCL Device Info ===" << std::endl;
std::cout << "Name: " << device.getInfo<CL_DEVICE_NAME>() << std::endl;
std::cout << "Vendor: " << device.getInfo<CL_DEVICE_VENDOR>() << std::endl;
std::cout << "Version: " << device.getInfo<CL_DEVICE_VERSION>()
<< std::endl;
std::cout << "Compute Units: "
<< device.getInfo<CL_DEVICE_MAX_COMPUTE_UNITS>() << std::endl;
std::cout << "Global Memory: "
<< device.getInfo<CL_DEVICE_GLOBAL_MEM_SIZE>() / (1024 * 1024)
<< " MB" << std::endl;
std::cout << "Local Memory: "
<< device.getInfo<CL_DEVICE_LOCAL_MEM_SIZE>() / 1024 << " KB"
<< std::endl;
std::cout << "Max Work Group Size: "
<< device.getInfo<CL_DEVICE_MAX_WORK_GROUP_SIZE>() << std::endl;
}
bool hasProgram(Program program) const {
return programs.find(program) != programs.end();
}
};
extern OpenCL openCL;
#endif

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@@ -1,32 +0,0 @@
#ifndef MATRIX_H
#define MATRIX_H
#include <stdexcept>
#include "device.hpp"
class Matrix {
protected:
cl_mem buf;
size_t rows;
size_t cols;
public:
Matrix(CalcEngine &calcEngine, cl_mem_flags flags, size_t rows, size_t cols,
float *matrix)
: rows(rows), cols(cols) {
if (rows == 0 || cols == 0) {
throw std::invalid_argument("Размеры матрицы должны быть больше 0");
}
buf = calcEngine.createBuffer(flags, rows * cols * sizeof(float), matrix);
}
~Matrix() { clReleaseMemObject(buf); }
size_t getRows() const { return rows; }
size_t getCols() const { return cols; }
const cl_mem getBuf() const { return buf; }
};
#endif

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@@ -1,9 +0,0 @@
__kernel void matrix_mult(__global float* A, __global float* B, __global float* C, int M, int N, int K) {
int i = get_global_id(0);
int j = get_global_id(1);
float sum = 0.0f;
for (int k = 0; k < K; k++) {
sum += A[i * K + k] * B[k * N + j];
}
C[i * N + j] = sum;
}

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@@ -1,40 +0,0 @@
#ifndef OPENCL_H
#define OPENCL_H
#include <CL/cl.h>
#include <fstream>
#include <stdexcept>
class OpenCLException : public std::runtime_error {
private:
cl_int error_code;
public:
OpenCLException(cl_int error, const std::string &operation)
: std::runtime_error("Error during " + operation + ": " +
std::to_string(error)),
error_code(error) {}
cl_int getErrorCode() const { return error_code; }
};
class OpenCL {
public:
static void checkError(cl_int error, const std::string &operation) {
if (error != CL_SUCCESS) {
throw OpenCLException(error, operation);
}
}
static std::string readFile(const std::string &filename) {
std::ifstream file(filename);
if (!file.is_open()) {
throw std::runtime_error("Failed to open kernel file: " + filename);
}
return std::string((std::istreambuf_iterator<char>(file)),
std::istreambuf_iterator<char>());
}
};
#endif