425 lines
16 KiB
C++
425 lines
16 KiB
C++
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#include "mat_mul.h"
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#include <stdio.h>
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#include <CL/cl.h>
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#define CHECK_ERROR(err) \
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if (err != CL_SUCCESS) { \
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printf("[%s:%d] OpenCL error %d\n", __FILE__, __LINE__, err); \
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exit(EXIT_FAILURE); \
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}
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static cl_int err;
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static cl_platform_id platform;
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static cl_device_id device_m[4];
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static cl_context context;
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static cl_command_queue queue_m[4];
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static cl_program program;
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static cl_kernel kernel_m[4];
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static cl_mem a_d[4], b_d[4], c_d[4];
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static cl_mem a_d_xl[4], b_d_xl[4], c_d_xl[4];
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static cl_mem c_result;
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static float *A, *B, *C;
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static int M, N, K;
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static int M_xl, N_xl, K_xl;
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void mat_mul(float *_A, float *_B, float *_C, int _M, int _N, int _K) {
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//A = _A, B = _B, C = _C;
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//M = _M, N = _N, K = _K;
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int M_single = M/4;
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int M_last = M - 3*(M/4);
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const size_t p_local[2] = {16, 16};
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const size_t p_global_a[2] = {(size_t)M_xl, (size_t)K_xl};
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const size_t p_global_b[2] = {(size_t)K_xl, (size_t)N_xl};
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//const size_t p_global_c[2] = {(size_t)M, (size_t)N};
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cl_kernel kernel_zeropadding_a[4];
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for(int i = 0; i < 4; i++){
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kernel_zeropadding_a[i] = clCreateKernel(program, "paddingAddZeroes", &err);
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CHECK_ERROR(err);
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err = clSetKernelArg(kernel_zeropadding_a[i], 0, sizeof(int), (void*)&M_single);
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err = clSetKernelArg(kernel_zeropadding_a[i], 1, sizeof(int), (void*)&K);
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err = clSetKernelArg(kernel_zeropadding_a[i], 2, sizeof(cl_mem), (void*)&a_d[i]);
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err = clSetKernelArg(kernel_zeropadding_a[i], 3, sizeof(int), (void*)&M_xl);
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err = clSetKernelArg(kernel_zeropadding_a[i], 4, sizeof(int), (void*)&K_xl);
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err = clSetKernelArg(kernel_zeropadding_a[i], 5, sizeof(cl_mem), (void*)&a_d_xl[i]);
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err = clEnqueueNDRangeKernel(queue_m[i], kernel_zeropadding_a[i], 2, NULL, p_global_a, p_local, 0, NULL, NULL);
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CHECK_ERROR(err);
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}
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kernel_zeropadding_a[3] = clCreateKernel(program, "paddingAddZeroes", &err);
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CHECK_ERROR(err);
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err = clSetKernelArg(kernel_zeropadding_a[3], 0, sizeof(int), (void*)&M_last);
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err = clSetKernelArg(kernel_zeropadding_a[3], 1, sizeof(int), (void*)&K);
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err = clSetKernelArg(kernel_zeropadding_a[3], 2, sizeof(cl_mem), (void*)&a_d[3]);
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err = clSetKernelArg(kernel_zeropadding_a[3], 3, sizeof(int), (void*)&M_xl);
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err = clSetKernelArg(kernel_zeropadding_a[3], 4, sizeof(int), (void*)&K_xl);
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err = clSetKernelArg(kernel_zeropadding_a[3], 5, sizeof(cl_mem), (void*)&a_d_xl[3]);
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err = clEnqueueNDRangeKernel(queue_m[3], kernel_zeropadding_a[3], 2, NULL, p_global_a, p_local, 0, NULL, NULL);
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CHECK_ERROR(err);
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cl_kernel kernel_zeropadding_b[4];
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for(int i = 0; i < 4; i++){
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kernel_zeropadding_b[i] = clCreateKernel(program, "paddingAddZeroes", &err);
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CHECK_ERROR(err);
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err = clSetKernelArg(kernel_zeropadding_b[i], 0, sizeof(int), (void*)&K);
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err = clSetKernelArg(kernel_zeropadding_b[i], 1, sizeof(int), (void*)&N);
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err = clSetKernelArg(kernel_zeropadding_b[i], 2, sizeof(cl_mem), (void*)&b_d[i]);
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err = clSetKernelArg(kernel_zeropadding_b[i], 3, sizeof(int), (void*)&K_xl);
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err = clSetKernelArg(kernel_zeropadding_b[i], 4, sizeof(int), (void*)&N_xl);
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err = clSetKernelArg(kernel_zeropadding_b[i], 5, sizeof(cl_mem), (void*)&b_d_xl[i]);
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err = clEnqueueNDRangeKernel(queue_m[i], kernel_zeropadding_b[i], 2, NULL, p_global_b, p_local, 0, NULL, NULL);
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CHECK_ERROR(err);
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}
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//cl_kernel kernel_zeropadding_c = clCreateKernel(program, "paddingAddZeroes", &err);
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//CHECK_ERROR(err);
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//err = clSetKernelArg(kernel_zeropadding_c, 0, sizeof(int), (void*)&M_xl_single);
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//CHECK_ERROR(err);
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//err = clSetKernelArg(kernel_zeropadding_c, 1, sizeof(int), (void*)&N_xl);
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//CHECK_ERROR(err);
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//err = clSetKernelArg(kernel_zeropadding_c, 2, sizeof(cl_mem), (void*)&c_d_xl);
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//CHECK_ERROR(err);
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//err = clSetKernelArg(kernel_zeropadding_c, 3, sizeof(int), (void*)&M);
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//CHECK_ERROR(err);
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//err = clSetKernelArg(kernel_zeropadding_c, 4, sizeof(int), (void*)&N);
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//CHECK_ERROR(err);
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//err = clSetKernelArg(kernel_zeropadding_c, 5, sizeof(cl_mem), (void*)&c_d);
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//CHECK_ERROR(err);
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// Setup kernel arguments
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for(int i = 0; i < 4; i++){
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err = clSetKernelArg(kernel_m[i], 0, sizeof(cl_mem), &a_d_xl[i]);
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CHECK_ERROR(err);
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err = clSetKernelArg(kernel_m[i], 1, sizeof(cl_mem), &b_d_xl[i]);
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CHECK_ERROR(err);
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err = clSetKernelArg(kernel_m[i], 2, sizeof(cl_mem), &c_d_xl[i]);
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CHECK_ERROR(err);
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err = clSetKernelArg(kernel_m[i], 3, sizeof(int), &M_xl);
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CHECK_ERROR(err);
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err = clSetKernelArg(kernel_m[i], 4, sizeof(int), &N_xl);
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CHECK_ERROR(err);
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err = clSetKernelArg(kernel_m[i], 5, sizeof(int), &K_xl);
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CHECK_ERROR(err);
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}
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// Setup global work size and local work size
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size_t gws[2] = {(size_t)(M_xl/8), (size_t)N_xl}, lws[2] = {4, 32};
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//for (int i = 0; i < 2; ++i) {
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// // By OpenCL spec, global work size should be MULTIPLE of local work size
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// // Formula below achieve it
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// // e.g., gws = 25, lws = 16, then (25 + 16 - 1) / 16 * 16 = 40 / 16 * 16 = 2 * 16 = 32
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// gws[i] = (gws[i] + lws[i] - 1) / lws[i] * lws[i];
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//}
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//size_t gws[2] = {(size_t)M_xl, (size_t)N_xl/8}, lws[2] = {32, 4};
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err = clFinish(queue_m[0]);
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err = clFinish(queue_m[1]);
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err = clFinish(queue_m[2]);
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err = clFinish(queue_m[3]);
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CHECK_ERROR(err);
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for(int i = 0; i < 4; i++){
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err = clEnqueueNDRangeKernel(queue_m[i], kernel_m[i], 2, NULL, gws, lws, 0, NULL, NULL);
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CHECK_ERROR(err);
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}
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//err = clEnqueueReadBuffer(queue, a_d_xl, CL_TRUE, 0, M_xl * K_xl * sizeof(float), A_buf, 0, NULL, NULL);
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//CHECK_ERROR(err);
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// Run kernel
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//err = clEnqueueNDRangeKernel(queue, kernel_zeropadding_c, 2, NULL, p_global_c, p_local, 0, NULL, NULL);
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// DO NOT REMOVE; NEEDED FOR TIME MEASURE
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err = clFinish(queue_m[0]);
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err = clFinish(queue_m[1]);
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err = clFinish(queue_m[2]);
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err = clFinish(queue_m[3]);
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CHECK_ERROR(err);
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}
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static void print_platform_info(cl_platform_id platform) {
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size_t sz;
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char *buf;
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CHECK_ERROR(clGetPlatformInfo(platform, CL_PLATFORM_NAME, 0, NULL, &sz));
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buf = (char*)malloc(sz);
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CHECK_ERROR(clGetPlatformInfo(platform, CL_PLATFORM_NAME, sz, buf, NULL));
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printf("Detected OpenCL platform: %s\n", buf);
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free(buf);
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}
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static void print_device_info(cl_device_id device) {
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size_t sz;
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char *buf;
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CHECK_ERROR(clGetDeviceInfo(device, CL_DEVICE_NAME, 0, NULL, &sz));
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buf = (char*)malloc(sz);
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CHECK_ERROR(clGetDeviceInfo(device, CL_DEVICE_NAME, sz, buf, NULL));
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printf("Detected OpenCL device: %s\n", buf);
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free(buf);
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}
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//static cl_program create_and_build_program_with_source(cl_context context, cl_device_id device, const char *file_name) {
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// FILE *file = fopen(file_name, "rb");
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// if (file == NULL) {
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// printf("Failed to open %s\n", file_name);
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// exit(EXIT_FAILURE);
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// }
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// fseek(file, 0, SEEK_END);
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// size_t source_size = ftell(file);
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// rewind(file);
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// char *source_code = (char*)malloc(source_size + 1);
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// size_t ntotal = 0;
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// while (ntotal < source_size) {
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// int nread = fread(source_code, sizeof(char), source_size, file);
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// ntotal += nread;
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// }
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// source_code[source_size] = '\0';
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// fclose(file);
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// cl_program program = clCreateProgramWithSource(context, 1, (const char **)&source_code, &source_size, &err);
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// CHECK_ERROR(err);
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// free(source_code);
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// err = clBuildProgram(program, 1, &device, "", NULL, NULL);
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// if (err == CL_BUILD_PROGRAM_FAILURE) {
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// size_t log_size;
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// CHECK_ERROR(clGetProgramBuildInfo(program, device, CL_PROGRAM_BUILD_LOG, 0, NULL, &log_size));
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// char *log = (char*)malloc(log_size + 1);
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// CHECK_ERROR(clGetProgramBuildInfo(program, device, CL_PROGRAM_BUILD_LOG, log_size, log, NULL));
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// log[log_size] = 0;
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// printf("Compile error:\n%s\n", log);
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// free(log);
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// }
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// CHECK_ERROR(err);
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// return program;
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//}
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static cl_program create_and_build_program_with_source_4(cl_context context, const char *file_name) {
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FILE *file = fopen(file_name, "rb");
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if (file == NULL) {
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printf("Failed to open %s\n", file_name);
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exit(EXIT_FAILURE);
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}
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fseek(file, 0, SEEK_END);
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size_t source_size = ftell(file);
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rewind(file);
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char *source_code = (char*)malloc(source_size + 1);
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size_t ntotal = 0;
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while (ntotal < source_size) {
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int nread = fread(source_code, sizeof(char), source_size, file);
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ntotal += nread;
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}
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source_code[source_size] = '\0';
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fclose(file);
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cl_program program = clCreateProgramWithSource(context, 1, (const char **)&source_code, &source_size, &err);
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CHECK_ERROR(err);
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free(source_code);
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err = clBuildProgram(program, 4, device_m, "", NULL, NULL);
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if (err == CL_BUILD_PROGRAM_FAILURE) {
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printf("Compile error:\n\n");
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//size_t log_size;
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//CHECK_ERROR(clGetProgramBuildInfo(program, device, CL_PROGRAM_BUILD_LOG, 0, NULL, &log_size));
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//char *log = (char*)malloc(log_size + 1);
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//CHECK_ERROR(clGetProgramBuildInfo(program, device, CL_PROGRAM_BUILD_LOG, log_size, log, NULL));
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//log[log_size] = 0;
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//printf("Compile error:\n%s\n", log);
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//free(log);
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}
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CHECK_ERROR(err);
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return program;
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}
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void mat_mul_init(float *_A, float *_B, float *_C, int _M, int _N, int _K) {
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// Get OpenCL platform
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//
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A = _A;
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B = _B;
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C = _C;
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M = _M;
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N = _N;
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K = _K;
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//printf("mat mul init A 0 0 : %f\n", A[0]);
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//printf("mat mul init A 0 1 : %f\n", A[1]);
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//printf("mat mul init B 0 0 : %f\n", B[0]);
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//printf("mat mul init B 1 0 : %f\n", B[N]);
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//M_xl = (M + 31) / 32 * 32;
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//N_xl = (N + 31) / 32 * 32;
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//K_xl = (K + 31) / 32 * 32;
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//
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M_xl = 8192/4;
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N_xl = 8192;
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K_xl = 8192;
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err = clGetPlatformIDs(1, &platform, NULL);
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CHECK_ERROR(err);
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print_platform_info(platform);
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// Get OpenCL device
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err = clGetDeviceIDs(platform, CL_DEVICE_TYPE_GPU, 4, device_m, NULL);
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CHECK_ERROR(err);
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print_device_info(device_m[0]);
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// Create OpenCL context
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context = clCreateContext(NULL, 4, device_m, NULL, NULL, &err);
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CHECK_ERROR(err);
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int a_single_size = ((M/4) * K) * sizeof(float);
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int a_last_size = (M - 3*(M/4)) * K * sizeof(float);
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int c_single_size = ((M/4) * N) * sizeof(float);
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int c_last_size = (M - 3*(M/4)) * N * sizeof(float);
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// Create OpenCL command queue
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for(int i = 0; i < 4; i++){
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queue_m[i] = clCreateCommandQueue(context, device_m[i], 0, &err);
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CHECK_ERROR(err);
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a_d_xl[i] = clCreateBuffer(context, CL_MEM_READ_WRITE, M_xl * K_xl * sizeof(float), NULL, &err);
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CHECK_ERROR(err);
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b_d_xl[i] = clCreateBuffer(context, CL_MEM_READ_WRITE, K_xl * N_xl * sizeof(float), NULL, &err);
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CHECK_ERROR(err);
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c_d_xl[i] = clCreateBuffer(context, CL_MEM_READ_WRITE, M_xl * N_xl * sizeof(float), NULL, &err);
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CHECK_ERROR(err);
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}
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for(int i = 0; i < 3; i++){
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a_d[i] = clCreateBuffer(context, CL_MEM_READ_WRITE, a_single_size, NULL, &err);
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CHECK_ERROR(err);
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b_d[i] = clCreateBuffer(context, CL_MEM_READ_WRITE, K * N * sizeof(float), NULL, &err);
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CHECK_ERROR(err);
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c_d[i] = clCreateBuffer(context, CL_MEM_READ_WRITE, c_single_size, NULL, &err);
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CHECK_ERROR(err);
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}
|
||
|
|
a_d[3] = clCreateBuffer(context, CL_MEM_READ_WRITE, a_last_size, NULL, &err);
|
||
|
|
CHECK_ERROR(err);
|
||
|
|
b_d[3] = clCreateBuffer(context, CL_MEM_READ_WRITE, K * N * sizeof(float), NULL, &err);
|
||
|
|
CHECK_ERROR(err);
|
||
|
|
c_d[3] = clCreateBuffer(context, CL_MEM_READ_WRITE, c_last_size, NULL, &err);
|
||
|
|
CHECK_ERROR(err);
|
||
|
|
|
||
|
|
c_result = clCreateBuffer(context, CL_MEM_READ_WRITE, M * N * sizeof(float), NULL, &err);
|
||
|
|
CHECK_ERROR(err);
|
||
|
|
|
||
|
|
// Compile program from "kernel.cl"
|
||
|
|
program = create_and_build_program_with_source_4(context, "kernel.cl");
|
||
|
|
|
||
|
|
// Extract kernel from compiled program
|
||
|
|
kernel_m[0] = clCreateKernel(program, "sgemm", &err);
|
||
|
|
kernel_m[1] = clCreateKernel(program, "sgemm", &err);
|
||
|
|
kernel_m[2] = clCreateKernel(program, "sgemm", &err);
|
||
|
|
kernel_m[3] = clCreateKernel(program, "sgemm", &err);
|
||
|
|
CHECK_ERROR(err);
|
||
|
|
|
||
|
|
// Create GPU buffers
|
||
|
|
|
||
|
|
// Write to GPU; A (cpu) -> a_d (gpu), B (cpu) -> b_d (gpu)
|
||
|
|
for(int i = 0; i < 3; i++){
|
||
|
|
err = clEnqueueWriteBuffer(queue_m[i], a_d[i], CL_FALSE, 0, a_single_size, A + i*(a_single_size/sizeof(float)), 0, NULL, NULL);
|
||
|
|
CHECK_ERROR(err);
|
||
|
|
err = clEnqueueWriteBuffer(queue_m[i], b_d[i], CL_FALSE, 0, K * N * sizeof(float), B, 0, NULL, NULL);
|
||
|
|
CHECK_ERROR(err);
|
||
|
|
}
|
||
|
|
err = clEnqueueWriteBuffer(queue_m[3], a_d[3], CL_FALSE, 0, a_last_size, A + 3*(a_single_size/sizeof(float)), 0, NULL, NULL);
|
||
|
|
CHECK_ERROR(err);
|
||
|
|
err = clEnqueueWriteBuffer(queue_m[3], b_d[3], CL_TRUE, 0, K * N * sizeof(float), B, 0, NULL, NULL);
|
||
|
|
CHECK_ERROR(err);
|
||
|
|
|
||
|
|
// DO NOT REMOVE; NEEDED FOR TIME MEASURE
|
||
|
|
err = clFinish(queue_m[0]);
|
||
|
|
err = clFinish(queue_m[1]);
|
||
|
|
err = clFinish(queue_m[2]);
|
||
|
|
err = clFinish(queue_m[3]);
|
||
|
|
CHECK_ERROR(err);
|
||
|
|
}
|
||
|
|
|
||
|
|
void mat_mul_final(float *A, float *B, float *C, int M, int N, int K) {
|
||
|
|
// Read from GPU; c_d (gpu) -> C (cpu)
|
||
|
|
|
||
|
|
int M_single = M/4;
|
||
|
|
|
||
|
|
const size_t merge_local[2] = {32, 32};
|
||
|
|
const size_t merge_global[2] = {(size_t)((M + 31)/32*32), (size_t)((N + 31)/32*32)};
|
||
|
|
|
||
|
|
cl_kernel kernel_merge = clCreateKernel(program, "mergeResult", &err);
|
||
|
|
CHECK_ERROR(err);
|
||
|
|
err = clSetKernelArg(kernel_merge, 0, sizeof(cl_mem), (void*)&c_d_xl[0]);
|
||
|
|
err = clSetKernelArg(kernel_merge, 1, sizeof(cl_mem), (void*)&c_d_xl[1]);
|
||
|
|
err = clSetKernelArg(kernel_merge, 2, sizeof(cl_mem), (void*)&c_d_xl[2]);
|
||
|
|
err = clSetKernelArg(kernel_merge, 3, sizeof(cl_mem), (void*)&c_d_xl[3]);
|
||
|
|
err = clSetKernelArg(kernel_merge, 4, sizeof(cl_mem), (void*)&c_result);
|
||
|
|
err = clSetKernelArg(kernel_merge, 5, sizeof(int), (void*)&M_xl);
|
||
|
|
err = clSetKernelArg(kernel_merge, 6, sizeof(int), (void*)&N_xl);
|
||
|
|
err = clSetKernelArg(kernel_merge, 7, sizeof(int), (void*)&M_single);
|
||
|
|
err = clSetKernelArg(kernel_merge, 8, sizeof(int), (void*)&M);
|
||
|
|
err = clSetKernelArg(kernel_merge, 9, sizeof(int), (void*)&N);
|
||
|
|
|
||
|
|
err = clEnqueueNDRangeKernel(queue_m[0], kernel_merge, 2, NULL, merge_global, merge_local, 0, NULL, NULL);
|
||
|
|
CHECK_ERROR(err);
|
||
|
|
err = clFinish(queue_m[0]);
|
||
|
|
CHECK_ERROR(err);
|
||
|
|
|
||
|
|
err = clEnqueueReadBuffer(queue_m[0], c_result, CL_TRUE, 0, M * N * sizeof(float), C, 0, NULL, NULL);
|
||
|
|
CHECK_ERROR(err);
|
||
|
|
|
||
|
|
err = clFinish(queue_m[0]);
|
||
|
|
CHECK_ERROR(err);
|
||
|
|
|
||
|
|
return;
|
||
|
|
|
||
|
|
|
||
|
|
//float * C_xl_0 = (float*)aligned_alloc(32, M_xl * N_xl * sizeof(float));
|
||
|
|
//float * C_xl_1 = (float*)aligned_alloc(32, M_xl * N_xl * sizeof(float));
|
||
|
|
//float * C_xl_2 = (float*)aligned_alloc(32, M_xl * N_xl * sizeof(float));
|
||
|
|
//float * C_xl_3 = (float*)aligned_alloc(32, M_xl * N_xl * sizeof(float));
|
||
|
|
//err = clEnqueueReadBuffer(queue_m[0], c_d_xl[0], CL_FALSE, 0, M_xl * N_xl * sizeof(float), C_xl_0, 0, NULL, NULL);
|
||
|
|
//err = clEnqueueReadBuffer(queue_m[1], c_d_xl[1], CL_FALSE, 0, M_xl * N_xl * sizeof(float), C_xl_1, 0, NULL, NULL);
|
||
|
|
//err = clEnqueueReadBuffer(queue_m[2], c_d_xl[2], CL_FALSE, 0, M_xl * N_xl * sizeof(float), C_xl_2, 0, NULL, NULL);
|
||
|
|
//err = clEnqueueReadBuffer(queue_m[3], c_d_xl[3], CL_TRUE, 0, M_xl * N_xl * sizeof(float), C_xl_3, 0, NULL, NULL);
|
||
|
|
//CHECK_ERROR(err);
|
||
|
|
|
||
|
|
//int single_size = N*(M/4);
|
||
|
|
|
||
|
|
//for(int i = 0; i < M/4; i++){
|
||
|
|
// for(int j = 0; j < N; j++){
|
||
|
|
// C[i*N + j] = C_xl_0[i*N_xl + j];
|
||
|
|
// }
|
||
|
|
//}
|
||
|
|
//for(int i = 0; i < M/4; i++){
|
||
|
|
// for(int j = 0; j < N; j++){
|
||
|
|
// C[single_size + i*N + j] = C_xl_1[i*N_xl + j];
|
||
|
|
// }
|
||
|
|
//}
|
||
|
|
//for(int i = 0; i < M/4; i++){
|
||
|
|
// for(int j = 0; j < N; j++){
|
||
|
|
// C[2*single_size + i*N + j] = C_xl_2[i*N_xl + j];
|
||
|
|
// }
|
||
|
|
//}
|
||
|
|
//for(int i = 0; i < (M-3*(M/4)); i++){
|
||
|
|
// for(int j = 0; j < N; j++){
|
||
|
|
// C[3*single_size + i*N + j] = C_xl_3[i*N_xl + j];
|
||
|
|
// }
|
||
|
|
//}
|
||
|
|
//free(C_xl_0);
|
||
|
|
//free(C_xl_1);
|
||
|
|
//free(C_xl_2);
|
||
|
|
//free(C_xl_3);
|
||
|
|
|
||
|
|
//// DO NOT REMOVE; NEEDED FOR TIME MEASURE
|
||
|
|
//err = clFinish(queue_m[0]);
|
||
|
|
//err = clFinish(queue_m[1]);
|
||
|
|
//err = clFinish(queue_m[2]);
|
||
|
|
//err = clFinish(queue_m[3]);
|
||
|
|
//CHECK_ERROR(err);
|
||
|
|
}
|