C code for opencl benchmark test

file_759556.txt (text/plain), 11.80 KB, created by Janpieter Sollie on 2020-12-12 06:07:19 UTC

#define CL_TARGET_OPENCL_VERSION 110                                                                                                                           #include <stdio.h>                                                                                                                                             #include <stdlib.h>                                                                                                                                            #include <time.h>                                                                                                                                                                                                                                                                                                             #ifdef __APPLE__                                                                                                                                               #include <OpenCL/opencl.h>                                                                                                                                     #else                                                                                                                                                          #include <CL/cl.h>                                                                                                                                             #endif                                                                                                                                                                                                                                                                                                                        #define MAX_SOURCE_SIZE (0x100000)                                                                                                                                                                                                                                                                                            int main() {                                                                                                                                                     cl_device_id device_id = NULL;                                                                                                                                 cl_context context = NULL;                                                                                                                                     cl_command_queue command_queue = NULL;                                                                                                                         cl_mem memobj = NULL;                                                                                                                                          cl_program program = NULL;                                                                                                                                     cl_kernel kernel = NULL;                                                                                                                                       cl_platform_id platform_id = NULL;                                                                                                                             cl_uint ret_num_devices;                                                                                                                                       cl_uint ret_num_platforms;                                                                                                                                     cl_int ret;                                                                                                                                                                                                                                                                                                                   cl_ulong val[1];                                                                                                                                                                                                                                                                                                              FILE *fp;                                                                                                                                                      char fileName[] = "./sum.cl";                                                                                                                                  char *source_str;                                                                                                                                              size_t source_size;                                                                                                                                                                                                                                                                                                           fp = fopen(fileName, "r");                                                                                                                                     if (!fp) {                                                                                                                                                       fprintf(stderr, "Failed to load kernel\n");                                                                                                                    exit(1);                                                                                                                                                     }                                                                                                                                                              source_str = (char*)calloc(1, MAX_SOURCE_SIZE);                                                                                                                source_size = fread(source_str, 1, MAX_SOURCE_SIZE, fp);                                                                                                       fclose(fp);                                                                                                                                                                                                                                                                                                                   ret = clGetPlatformIDs(1, &platform_id, &ret_num_platforms);                                                                                                   ret = clGetDeviceIDs(platform_id, CL_DEVICE_TYPE_DEFAULT, 1, &device_id, &ret_num_devices);                                                                                                                                                                                                                                   context = clCreateContext(NULL, 1, &device_id, NULL, NULL, &ret);                                                                                              command_queue = clCreateCommandQueue(context, device_id, 0, &ret);                                                                                             memobj = clCreateBuffer(context, CL_MEM_READ_WRITE | CL_MEM_COPY_HOST_PTR, MAX_SOURCE_SIZE, source_str, &ret);                                                 program = clCreateProgramWithSource(context, 1, (const char **)&source_str, (const size_t *)&source_size, &ret);                                               ret = clBuildProgram(program, 1, &device_id, NULL, NULL, NULL);                                                                                                kernel = clCreateKernel(program, "hello", &ret);                                                                                                                                                                                                                                                                              ret = clSetKernelArg(kernel, 0, sizeof(cl_mem), (void*)&memobj);                                                                                                                                                                                                                                                              clock_t begin = clock();                                                                                                                                                                                                                                                                                                      ret = clEnqueueTask(command_queue, kernel, 0, NULL, NULL);                                                                                                                                                                                                                                                                    ret = clEnqueueReadBuffer(command_queue, memobj, CL_TRUE, 0, sizeof(cl_mem), val, 0, NULL, NULL);                                                                                                                                                                                                                             clock_t end = clock();                                                                                                                                         double runtime = (double)(end - begin) / CLOCKS_PER_SEC;                                                                                                                                                                                                                                                                      ret = clFlush(command_queue);                                                                                                                                  ret = clFinish(command_queue);                                                                                                                                 ret = clReleaseKernel(kernel);                                                                                                                                 ret = clReleaseProgram(program);                                                                                                                               ret = clReleaseMemObject(memobj);                                                                                                                              ret = clReleaseCommandQueue(command_queue);                                                                                                                    ret = clReleaseContext(context);                                                                                                                                                                                                                                                                                              printf("Result: %lu\n", val[0]);                                                                                                                               printf("Runtime: %lfms\n", runtime);                                                                                                                                                                                                                                                                                          free(source_str);                                                                                                                                                                                                                                                                                                             return 0;                                                                                                                                                    }