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aclrtDeviceDisablePeerAccess
Atlas 200/300/500 推理产品，不支持该接口。
Atlas 200/500 A2推理产品，不支持该接口。
函数功能
关闭当前Device与指定Device之间的内存复制功能。关闭内存复制功能是Device级的。
约束说明
调用aclrtDeviceEnablePeerAccess接口使能当前Device与指定Device之间的内存复制后，可调用aclrtDeviceDisablePeerAccess接口关闭内存复制功能。
Atlas 推理系列产品（Ascend 310P处理器），Control CPU开放形态下，应用程序运行在Device的Control CPU上时，该接口不支持Device之间的内存复制。
函数原型
aclError aclrtDeviceDisablePeerAccess(int32_t peerDeviceId)
参数说明
参数名 |
输入/输出 |
说明 |
|---|---|---|
peerDeviceId |
输入 |
Device ID，该ID不能与当前Device的ID相同。 用户调用aclrtGetDeviceCount接口获取可用的Device数量后，这个Device ID的取值范围：[0, (可用的Device数量-1)] |
返回值说明
返回0表示成功，返回其他值表示失败。
父主题： Device管理
