1) 枚举类型
cpp
#pragma once
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<windows.h>
#include<iostream>
#include <time.h>
enum Color {
RED, //RED=0
GREEN, //GREEN=1
BLUE //BLUE=2
};
int main()
{
//定义数据类型为枚举类型Color的数组
enum Color sky[3] = { RED,RED,RED};
for (int i = 0; i < 3; i++) {
printf("%d\n",sky[i]);
}
}
2) StarPU实现矩阵乘
cpp
#include <starpu.h>
#define N 100
// 定义在CPU上执行的任务
static void cpu_task(void *buffers[], void *cl_arg) {
// 获取输入和输出矩阵
float *A = (float *)STARPU_VECTOR_GET_PTR(buffers[0]);
float *B = (float *)STARPU_VECTOR_GET_PTR(buffers[1]);
float *C = (float *)STARPU_VECTOR_GET_PTR(buffers[2]);
// 执行矩阵乘法
for (int i = 0; i < N; i++) {
for (int j = 0; j < N; j++) {
C[i * N + j] = 0;
for (int k = 0; k < N; k++) {
C[i * N + j] += A[i * N + k] * B[k * N + j];
}
}
}
}
// 定义在GPU上执行的任务
static void gpu_task(void *buffers[], void *cl_arg) {
// 获取输入和输出矩阵
float *A = (float *)STARPU_VECTOR_GET_PTR(buffers[0]);
float *B = (float *)STARPU_VECTOR_GET_PTR(buffers[1]);
float *C = (float *)STARPU_VECTOR_GET_PTR(buffers[2]);
// 使用CUDA进行矩阵乘法
// 这里省略具体的CUDA代码
}
int main(int argc, char **argv) {
// 初始化StarPU
starpu_init(NULL);
// 分配数据
float *A = (float *)malloc(N * sizeof(float));
float *B = (float *)malloc(N * sizeof(float));
float *C = (float *)malloc(N * sizeof(float));
// 创建句柄
starpu_data_handle_t handle_A, handle_B, handle_C;
starpu_vector_data_register(&handle_A, STARPU_MAIN_RAM, (uintptr_t)A, N, sizeof(float));
starpu_vector_data_register(&handle_B, STARPU_MAIN_RAM, (uintptr_t)B, N, sizeof(float));
starpu_vector_data_register(&handle_C, STARPU_MAIN_RAM, (uintptr_t)C, N, sizeof(float));
// 定义任务代码
struct starpu_codelet cl;
starpu_codelet_init(&cl);
cl.where = STARPU_CPU | STARPU_CUDA;
cl.cpu_funcs[0] = cpu_task;
cl.cuda_funcs[0] = gpu_task;
cl.nbuffers = 3;
cl.modes[0] = STARPU_R;
cl.modes[1] = STARPU_R;
cl.modes[2] = STARPU_W;
// 创建任务
struct starpu_task *task = starpu_task_create();
task->cl = &cl;
//向缓冲区中填充数据
task->handles[0] = handle_A;
task->handles[1] = handle_B;
task->handles[2] = handle_C;
// 提交任务
starpu_task_submit(task);
// 等待任务完成
starpu_task_wait_for_all();
// 释放句柄
starpu_data_unregister(handle_A);
starpu_data_unregister(handle_B);
starpu_data_unregister(handle_C);
// 清理
free(A);
free(B);
free(C);
starpu_shutdown();
return 0;
}