Function: pointer_get_attributes

Product	Supported (√/x)
Ascend 950PR/Ascend 950DT	√
Atlas A3 training products/Atlas A3 inference products	√
Atlas A2 training products/Atlas A2 inference products	√
Atlas training products	√
Atlas inference products	√
Atlas 200I/500 A2 inference products	√

Obtains the memory attribute information, including whether the memory is on the host or device and the page table size.

C Prototype

aclError aclrtPointerGetAttributes(const void *ptr, aclrtPtrAttributes *attributes)

Python Function

attributes, ret = acl.rt.pointer_get_attributes(ptr)

Parameter	Description
ptr	Int, memory address. Do not pass the device address mapped by acl.rt.host_register or the device address obtained by calling acl.rt.host_get_device_pointer. Otherwise, undefined behavior may occur.

Return Value	Description
attributes	Dict, memory attributes. For details, see aclrtPtrAttributes.
ret	Int, error code. 0 on success; else, failure.

Parent topic: Unified Addressing