Late Attach

NvSciSync provides a mechanism for an application to allocate an NvSciSyncObj that will be shared with other peers, without requiring each peer to have sent an unreconciled NvSciSyncAttrList during initial reconciliation. The constraints of late attach waiter peers, however, should be passed using unreconciled NvSciSyncAttrList during the reconciliation process by the application to ensure the NvSciSyncObj is allocated to satisfy the constraints of the late peers.

NvSciSync also allows remote peer NvSciIpcEndpoint to gain access to already allocated NvSciSyncObj, provided the already allocated NvSciSyncObj satisfies the constraints of the unreconciled NvSciSyncAttrList, received from that peer, through the NvSciSyncObjAttachPeer() API. NvSciSync provides attribute keys such as NvSciSyncAttrKey_PeerLocationInfo, NvSciSyncAttrKey_PrimitiveInfo and NvSciSyncAttrKey_PeerHwEngineArraythat needs to be specified in the proxy unreconciled NvSciSyncAttrList during initial reconciliation.

Note

• Detailed descriptions of the attribute keys and the APIs are in the NVIDIA DriveOS API Reference.

• Application needs to refer to User Mode Driver (UMD) documentation for details of how to specify the NvSciSyncAttrKey_PrimitiveInfo and NvSciSyncAttrKey_PeerHwEngineArray keys.