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	√

Queries the execution status of all tasks on a specified stream.

C Prototype

aclError aclrtStreamQuery(aclrtStream stream, aclrtStreamStatus *status)

Python Function

status, ret = acl.rt.stream_query(stream)

Parameter	Description
stream	Int, pointer address of the stream to be operated.

Return Value	Description
status	Task status on the stream. For details, see aclrtStreamStatus.
ret	Int, error code. 0 on success; else, failure.

This API can be used in the following scenarios:

This API can be used to query the task execution status in the Ascend Virtual Instance (AVI) scenario.

Function: stream_query