aclrtHostUnregister

Applicable Products

Product

Supported

Ascend 950PR

Ascend 950DT

Atlas A3 training products/Atlas A3 inference products

Atlas A2 training products/Atlas A2 inference products

Atlas 200I/500 A2 inference products

Atlas inference products

Atlas training products

Function

Unregisters host memory.

This API is used in pair with aclrtHostRegister or aclrtHostRegisterV2.

Prototype

1
aclError aclrtHostUnregister(void *ptr)

Parameters

Parameter

Input/Output

Description

ptr

Input

Memory address on the host.

Returns

0 on success; otherwise, failure. For details, see aclError.