spinn_front_end_common.utilities.connections package¶
Module contents¶
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class
spinn_front_end_common.utilities.connections.
LiveEventConnection
(live_packet_gather_label, receive_labels=None, send_labels=None, local_host=None, local_port=19999)[source]¶ Bases:
spinn_front_end_common.utilities.database.database_connection.DatabaseConnection
A connection for receiving and sending live events from and to SpiNNaker.
Note
This class is intended to be potentially usable from another process than the one that the simulator is present in.
Parameters: - live_packet_gather_label (str) – The label of the vertex to which received events are being sent
- receive_labels (iterable(str)) – Labels of vertices from which live events will be received.
- send_labels (iterable(str)) – Labels of vertices to which live events will be sent
- local_host (str) – Optional specification of the local hostname or IP address of the interface to listen on
- local_port (int) – Optional specification of the local port to listen on. Must match the port that the toolchain will send the notification on (19999 by default)
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add_init_callback
(label, init_callback)[source]¶ Add a callback to be called to initialise a vertex.
Parameters: - label (str) – The label of the vertex to be notified about. Must be one of the vertices listed in the constructor
- init_callback (callable(str, int, float, float) -> None) – A function to be called to initialise the vertex. This should take as parameters the label of the vertex, the number of neurons in the population, the run time of the simulation in milliseconds, and the simulation timestep in milliseconds
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add_pause_stop_callback
(label, pause_stop_callback)[source]¶ Add a callback for the pause and stop state of the simulation.
Parameters: - label (str) – the label of the function to be sent
- pause_stop_callback (callable(str, LiveEventConnection) -> None) – A function to be called when the pause or stop message has been received. This function should take the label of the referenced vertex, and an instance of this class, which can be used to send events.
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add_receive_callback
(label, live_event_callback, translate_key=True)[source]¶ Add a callback for the reception of live events from a vertex.
Parameters: - label (str) – The label of the vertex to be notified about. Must be one of the vertices listed in the constructor
- live_event_callback (callable(str, int, list(int)) -> None) – A function to be called when events are received. This should take as parameters the label of the vertex, the simulation timestep when the event occurred, and an array-like of atom IDs.
- translate_key (bool) – True if the key is to be converted to an atom ID, False if the key should stay a key
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add_start_callback
(label, start_callback)[source]¶ Add a callback for the start of the simulation.
Parameters: - start_callback (callable(str, LiveEventConnection) -> None) – A function to be called when the start message has been received. This function should take the label of the referenced vertex, and an instance of this class, which can be used to send events
- label (str) – the label of the function to be sent
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add_start_resume_callback
(label, start_resume_callback)[source]¶ Add a callback for the start and resume state of the simulation.
Parameters: - label (str) – the label of the function to be sent
- start_resume_callback (callable(str, LiveEventConnection) -> None) – A function to be called when the start or resume message has been received. This function should take the label of the referenced vertex, and an instance of this class, which can be used to send events.
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send_eieio_message
(message, label)[source]¶ Send an EIEIO message (using one-way the live input) to the vertex with the given label.
Parameters: - message (AbstractEIEIOMessage) – The EIEIO message to send
- label (str) – The label of the receiver machine vertex
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send_event
(label, atom_id, send_full_keys=False)[source]¶ Send an event from a single atom.
Parameters:
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send_event_with_payload
(label, atom_id, payload)[source]¶ Send an event with a payload from a single atom.
Parameters: