Function: get_memcpy_desc_size

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	x
Atlas inference product	x
Atlas 200I/500 A2 inference product	√

Obtains the memory size used by the memory copy descriptor of the current device.

This API needs to work with other key APIs to implement memory copy. For details, see acl.rt.memcpy_async_with_desc.

C Prototype

aclError aclrtGetMemcpyDescSize(aclrtMemcpyKind kind, size_t *descSize)

Python Function

desc_size, ret = acl.rt.get_memcpy_desc_size(kind)

Parameter	Description
kind	Int, memory copy type. Currently, only ACL_MEMCPY_INNER_DEVICE_TO_DEVICE is supported, indicating memory copy within a device.

Return Value	Description
desc_size	Int, memory size, in bytes.
ret	Int, error code. 0 on success; else, failure.

Parent topic: Memory Management