aclrtEventGetTimestamp

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

Obtains the execution end time of an event (time elapsed since the AI processor system is started).

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 event in a stream --> Call aclrtSynchronizeStream to wait until the stream tasks are completed --> Call aclrtEventGetTimestamp to obtain the event execution time.

Prototype

aclError aclrtEventGetTimestamp(aclrtEvent event, uint64_t *timestamp)

Parameters

Parameter	Input/Output	Description
event	Input	Event to query. For details about the type definition, see aclrtEvent.
timestamp	Output	Time when the event execution ends, in microseconds.

Returns

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

Parent topic: Event Management