---
title: kupl_set_kernel_concurrency
description: "设置全局的memcpy算子并发度。"
url: https://www.hikunpeng.com/document/detail/zh/kunpenghpcs/hpckit/devg/KunpengHPCKit_developer_070.html
sourcePath: /source/zh/kunpenghpcs/hpckit/devg/KunpengHPCKit_developer_070.html
indexId: bb6fee7d83588f18e437b2ecbe79f181c9b4656c5cee1e454d1ed730a85eb38967
---
# kupl_set_kernel_concurrency

设置全局的memcpy算子并发度。

#### 接口定义

void kupl_set_kernel_concurrency(int num);


#### 参数

| 参数名 | 类型 | 描述 | 输入/输出 |
| --- | --- | --- | --- |
| num | int | 需要设置的算子并发度的值 约束：1≤num≤kupl\_get\_num\_executors()；当输入不在约束范围内时，内部设置num为kupl\_get\_num\_executors() | 输入 |


#### 示例

```
#include <stdio.h> 
#include "kupl.h" 

int main() 
{ 
    kupl_set_kernel_concurrency(2); 
    int num = kupl_get_kernel_concurrency();
    printf("kupl kernel concurrency = %d\n", num); 
    return 0; 
}
```

运行结果如下。

```
kupl kernel concurrency = 2
```

- 上述示例设置并打印了全局算子并发度的值。上述kupl_set_kernel_concurrency函数将算子并发度设置为2。
- 除了通过kupl_set_kernel_concurrency函数接口设置算子并发度外，还可以通过环境变量KUPL_KERNEL_CONCURRENCY来设置算子并发度。