fetch_data

Applicable Products

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

Obtains the graph output data.

Prototype

fetch_data(indexes=None, timeout=-1)

Parameters

Parameter	Data Type	Value Description
indexes	List[int]	Index of the output data, which must be unique. The value range is [0, N – 1], where N indicates the number of output data records. One or more values are supported. The default value is None, indicating that all outputs are fetched. For example, [0, 2] indicates that the first and third outputs are fetched.
timeout	int	Timeout period for fetching data, in ms. The value range is [0, 2147483647), and the value -1 indicates that no timeout will occur.

Parameter

Data Type

Value Description

indexes

List[int]

Index of the output data, which must be unique. The value range is [0, N – 1], where N indicates the number of output data records. One or more values are supported. The default value is None, indicating that all outputs are fetched.

For example, [0, 2] indicates that the first and third outputs are fetched.

timeout

int

Timeout period for fetching data, in ms. The value range is [0, 2147483647), and the value -1 indicates that no timeout will occur.

Returns

Tuple[List["Tensor"], FlowInfo, int] is returned.

In normal scenarios, the last return value of a tuple is 0 (success).

In case of exceptions, the last return value of a tuple indicates the specific error code.

Examples

import dataflow as df
graph = df.FlowGraph(...)
graph.feed_data(...)
graph.fetch_data(...)

Constraints

None

Parent topic: dataflow.FlowGraph