---
title: aclrtUuid
description: "```"
url: https://www.hiascend.com/document/detail/zh/canncommercial/latest/API/runtimeapi/aclcppdevg_03_2053.html
sourcePath: /source/zh/canncommercial/900/API/runtimeapi/aclcppdevg_03_2053.html
indexId: 161614162012a09985062f27ec5923f5ce742c6dc39202eafa0ad8657f23dcdf68
---
# aclrtUuid

```
typedef struct aclrtUuid {
    char  bytes[16];    // 一个16字节的字符串，作为Device的唯一标识
} aclrtUuid;
```