Function: free

Applicability

Product	Supported (√/x)
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	√

Function Usage

Frees device memory.

Prototype

C Prototype
1

aclError aclrtFree(void *devPtr)
Python Function
1

ret= acl.rt.free(dev_ptr)

Parameter Description

Parameter	Description
dev_ptr	Int, pointer address of the memory to be freed.

Return Value Description

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

Restrictions

acl.rt.free frees device memory through the acl.rt.malloc or acl.rt.malloc_cached API.
This API immediately frees the input memory. No implicit device synchronization or stream synchronization is performed within the function. Ensure that the memory pointer is not accessed after this API is called.

Reference

For the API call example, see Data Copy.

Parent topic: Memory Management