ReleaseEventID

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	x
Atlas inference product AI Core	√
Atlas inference product Vector Core	x
Atlas training product	√

Function Usage

Releases TEventID of a hard event (hardware synchronization event). This API is usually used together with AllocEventID.

Prototype

template <HardEvent evt>
__aicore__ inline void ReleaseEventID(TEventID id)

Parameters

**Table 1** Template parameters
Parameter	Description
evt	HardEvent hardware synchronization type. For details about this type, see the description of synchronization types in SetFlag/WaitFlag(ISASI).

**Table 2** Parameters
Parameter	Input/Output	Description
id	Input	TEventID type, which is the TEventID assigned by the AllocEventID call.

Constraints

AllocEventID and ReleaseEventID must appear in pairs. The TEventID transferred by ReleaseEventID must be assigned by the AllocEventID call.

Returns

None

Example

AscendC::TEventID eventID = GetTPipePtr()->AllocEventID<AscendC::HardEvent::V_S>(); //The scalar needs to wait for vector synchronization and the HardEvent ID is required.
AscendC::SetFlag<AscendC::HardEvent::V_S>(eventID);
......
......
......
AscendC::WaitFlag<AscendC::HardEvent::V_S>(eventID);
GetTPipePtr()->ReleaseEventID<AscendC::HardEvent::V_S>(eventID); //Release the ID of the hard event (scalar waiting for vector synchronization).
......

Parent topic: TPipe