FetchDataFlowGraph (Fetching Output Data by Index)

Applicability

Product	Supported
Atlas A3 training products / Atlas A3 inference products	√
Atlas A2 training products / Atlas A2 inference products	√
Atlas 200I/500 A2 inference products	x
Atlas inference products	x
Atlas training products	x

Function Description

Fetches output data of a graph by index.

Prototype

      
           Status FetchDataFlowGraph(uint32_t graph_id, const std::vector<uint32_t> &indexes, std::vector<Tensor> &outputs, DataFlowInfo &info, int32_t timeout)

Command-Line Options

Parameter	Input/Output	Description
graph_id	Input	ID of the graph to be executed.
indexes	Input	Index of the output data, which must be unique. Value range: [0, N – 1], where N indicates the number of data outputs. One or more values are supported. For example, {0,2} indicates that the first and third outputs are fetched.
outputs	Output	Output tensors of the computational graph. You do not need to allocate the memory manually. After the execution is complete, GE allocates and initializes the memory.
info	Output	Output data flow flag. For details, see DataFlow Execution API Overview.
timeout	Input	Timeout period for fetching data, in milliseconds. The value -1 indicates that no timeout ever occurs.

Returns

Function execution result. The following table describes the result.

Parameter	Type	Description
-	Status	SUCCESS: Data is successfully fetched. FAILED: Failed to fetch data. For details about error codes of ACL APIs, see ""aclError"". For details about other error codes, see UDF Error Codes.

Constraints

None

Parent topic: GetGraphBuilder