Function: host_unregister

Product	Supported
Atlas 350 Accelerator Card	√
Atlas A3 training product/Atlas A3 inference product	√
Atlas A2 training product/Atlas A2 inference product	√
Atlas training product	√
Atlas inference product	x
Atlas 200I/500 A2 inference product	x

Unregisters the host memory. This API is used in pair with acl.rt.host_register.

C Prototype

aclError aclrtHostUnregister(void *ptr)

Parameter	Description
ptr	Int, host memory address.

Return Value	Description
ret	Int, error code. 0 on success; else, failure.

Parent topic: Memory Management