---
title: kpccl_graph_synchronize
description: "等待直到kpccl图中的所有task都完成。"
url: https://www.hikunpeng.com/document/detail/zh/hpchistory/hpckit/develop2400/KunoengHPCKit_developer_038.html
sourcePath: /source/zh/hpchistory/hpckit/develop2400/KunoengHPCKit_developer_038.html
indexId: 62e510bef33f16cbea4e83df823dd13bc9a071029de26363a967b575630e2fe773
---
# kpccl_graph_synchronize

等待直到kpccl图中的所有task都完成。

#### 接口定义

void kpccl_graph_synchronize(kpccl_graph_h graph);


#### 参数


**表1 参数定义**

| 参数名 | 类型 | 描述 | 输入/输出 |
| --- | --- | --- | --- |
| graph | kpccl\_graph\_h | 需要等待执行其中task的kpccl graph | 输入 |


#### 示例

```
#include <stdio.h>
#include "kpccl.h"
static inline void task_str(void *args)
{
printf("graph task test.\n");
}
int main()
{
int executor_num = kpccl_get_num_executors();
int executors[executor_num];
for (int i =0; i < executor_num; i++) {
executors[i] = i;
}
kpccl_egroup_h egroup = kpccl_egroup_create(executors, executor_num);
kpccl_graph_h graph = kpccl_graph_create(egroup);
kpccl_task_desc_t task_desc = {
.func = task_str,
.args = nullptr,
};
kpccl_graph_add_task(graph, &task_desc, nullptr);
kpccl_graph_synchronize
(graph);
kpccl_graph_destroy(graph);
kpccl_egroup_destroy(egroup);
return 0;
}
```

运行结果如下。

```
graph task test.
```

上述示例演示了向graph图提交task、并等待直到graph图的全部task执行完成的流程。上述kpccl_graph_synchronize函数等待graph图中所有task都执行完成，才继续往下执行。