aclrtEventElapsedTime

Applicability

Product	Supported
Atlas 350 Accelerator Card	√
Atlas A3 training product / Atlas A3 inference product	√
Atlas A2 training product / Atlas A2 inference product	√
Atlas 200I/500 A2 inference product	√
Atlas inference product	√
Atlas training product	√

Description

Computes the elapsed time between two events.

This API must be used with other key APIs. The API call sequence is as follows: Call aclrtCreateEvent or aclrtCreateEventWithFlag to create an event --> Call aclrtRecordEvent to record the start event and end event in a stream --> Call aclrtSynchronizeStream to wait until the stream tasks are completed --> Call aclrtEventElapsedTime to compute the elapsed time between two events.

Prototype

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

Parameters

Parameter	Input/Output	Description
ms	Output	Pointer to the elapsed time between the start and end events, in milliseconds.
startEvent	Input	Start event. For details about the type definition, see aclrtEvent.
endEvent	Input	End event. For details about the type definition, see aclrtEvent.

Returns

0 on success; otherwise, failure. For details, see aclError.

API Call Example

For the API call example, see Event Timestamp Recording.

Parent topic: Event Management