Function: event_elapsed_time

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	√

Computes the elapsed time between two events.

C Prototype

aclError aclrtEventElapsedTime(float *ms, aclrtEvent startEvent, aclrtEvent endEvent)

Python Function

ms, ret = acl.rt.event_elapsed_time(start, end)

Parameter	Description
start	Int, pointer address of the start event object.
end	Int, pointer address of the end event object.

Return Value	Description
ms	Float, elapsed time between two events, in milliseconds.
ret	Int, error code. 0 on success; else, failure.

API call sequence: Call acl.rt.create_event/acl.rt.create_event_with_flag to create an event. > Call acl.rt.record_event to record the start and end events in the same stream. > Call acl.rt.synchronize_stream to block the application until all tasks in the specified stream are complete. > Call acl.rt.event_elapsed_time to measure the elapsed time between two events.

Parent topic: Event Management