---
title: aclrtLaunchKernelAttrId
description: "```"
url: https://www.hiascend.com/document/detail/zh/canncommercial/latest/API/runtimeapi/aclcppdevg_03_1813.html
sourcePath: /source/zh/canncommercial/900/API/runtimeapi/aclcppdevg_03_1813.html
indexId: f07434391434fe51dd41b4ac5cfa555c1c377955d048abf4ac59a3797183491e68
---
# aclrtLaunchKernelAttrId

```
typedef enum aclrtLaunchKernelAttrId {
    ACL_RT_LAUNCH_KERNEL_ATTR_SCHEM_MODE = 1,        // 调度模式
    ACL_RT_LAUNCH_KERNEL_ATTR_DYN_UBUF_SIZE = 2,     // 用于指定SIMT算子执行时需要的UB buffer动态内存大小
    ACL_RT_LAUNCH_KERNEL_ATTR_ENGINE_TYPE = 3,       // 算子执行引擎
    ACL_RT_LAUNCH_KERNEL_ATTR_BLOCKDIM_OFFSET,       // numBlocks偏移量
    ACL_RT_LAUNCH_KERNEL_ATTR_BLOCK_TASK_PREFETCH,   // 任务下发时，是否阻止硬件预取本任务的信息
    ACL_RT_LAUNCH_KERNEL_ATTR_DATA_DUMP,             // 是否开启Dump
    ACL_RT_LAUNCH_KERNEL_ATTR_TIMEOUT,               // 任务调度器等待任务执行的超时时间，单位秒
    ACL_RT_LAUNCH_KERNEL_ATTR_TIMEOUT_US = 8,        // 任务调度器等待任务执行的超时时间，单位微秒
} aclrtLaunchKernelAttrId;
```