aclrtDeviceDisablePeerAccess

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

Disables data exchange between the current device and a specified device. This API disables device-level data exchange.

After calling aclrtDeviceEnablePeerAccess to enable data exchange between the current device and a specified device, you can call aclrtDeviceDisablePeerAccess to disable data exchange.

Prototype

      
           aclError aclrtDeviceDisablePeerAccess(int32_t peerDeviceId)

Parameters

Parameter	Input/Output	Description
peerDeviceId	Input	Device ID, which must be different from the current device ID. Must be in the range of [0, Device count – 1]. Call aclrtGetDeviceCount to obtain the device count.

Parameter

Input/Output

Description

peerDeviceId

Input

Device ID, which must be different from the current device ID.

Must be in the range of [0, Device count – 1]. Call aclrtGetDeviceCount to obtain the device count.

Returns

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

API Call Example

For the API call example, see Cross-Device Data Exchange.

Parent topic: Device Management