Arrive

Product Support

Product	Supported
Atlas A3 training products/Atlas A3 inference products	x
Atlas A2 training products/Atlas A2 inference products	√
Atlas 200I/500 A2 inference products	x
Atlas inference product's AI Core	x
Atlas inference product's Vector Core	x
Atlas training products	x

Function

Notifies other waiting AIVs that the current AIV has completed the tasks on which it depends.

Prototype

__aicore__ inline void Arrive(uint32_t arriveIndex)

Parameters

**Table 1** API parameters
Parameter	Input/Output	Description
arriveIndex	Input	Index of the AIV in the Arrive group. Value range: [0, arriveSize – 1].

Returns

None

Restrictions

This API can be used in iterations. However, the maximum number of iterations cannot exceed 1,048,575 due to the limitation of the inter-core communication efficiency.

Example

if (id >= 0 && id < ARRIVE_NUM) {
  //Various Vector compute logic, which is implemented by users.
  barA.Arrive(id);                 // There are two AIVs in the Arrive group, block 0 and block 1, indicating that the two AIVs have completed tasks.
}

Parent topic: GroupBarrier