Function: update_data_buffer

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	√

Updates the buffer and size of the data in the aclDataBuffer.

After the aclDataBuffer is updated, free the aclDataBuffer memory when it is no longer needed to avoid memory leak.

C Prototype

aclError aclUpdateDataBuffer(aclDataBuffer *dataBuffer, void *data, size_t size)

Python Function

ret = acl.update_data_buffer(data_buffer, data, size)

Parameter	Description
data_buffer	Int, pointer address of the aclDataBuffer type. Call acl.create_data_buffer to create data of the aclDataBuffer type in advance. The memory needs to be managed by users. You can call acl.rt.malloc/acl.rt.free or acl.rt.malloc_host/acl.rt.free_host to allocate/free memory.
data	Int, pointer address for storing the data memory address.
size	Int, memory size, in bytes. If an empty tensor is needed, allocate at least 1 byte buffer.

Parameter

Description

data_buffer

Int, pointer address of the aclDataBuffer type.

Call acl.create_data_buffer to create data of the aclDataBuffer type in advance.

The memory needs to be managed by users. You can call acl.rt.malloc/acl.rt.free or acl.rt.malloc_host/acl.rt.free_host to allocate/free memory.

data

Int, pointer address for storing the data memory address.

size

Int, memory size, in bytes. If an empty tensor is needed, allocate at least 1 byte buffer.

Return Value	Description
ret	Int, error code. 0: success. Other values: failure.

Parent topic: aclmdlDataBuffer