Function: get_op_start

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	√

Obtains the operator execution start time (ns).

As a best practice, the user can create a thread and call this API in the new thread. Otherwise, this API call will block the main thread.

C Prototype

        
             uint64_t aclprofGetOpStart(const void *opInfo, size_t opInfoLen, uint32_t index)

Python Function

        
             op_start = acl.prof.get_op_start(op_info, op_info_len, index)

Parameter	Description
op_info	Int, specified memory address.
op_info_len	Int, length of the operator information.
index	Int, operator index. The value range is [0, Operator count – 1]. Call acl.prof.get_op_num to obtain the operator count.

Parameter

Description

op_info

Int, specified memory address.

op_info_len

Int, length of the operator information.

index

Int, operator index.

The value range is [0, Operator count – 1]. Call acl.prof.get_op_num to obtain the operator count.

Return Value	Description
op_start	Int, operator execution start time.

For the API call example, see Profile Data Collection.

Parent topic: Subscription to Operator Information