pacman.model.routing_tables package

Module contents

class pacman.model.routing_tables.AbstractMulticastRoutingTable

Bases: object

A multicast routing table. May be compressed or uncompressed.

abstractmethod add_multicast_routing_entry(multicast_routing_entry: MulticastRoutingEntry) → None[source]

Adds a routing entry to this table.

Parameters:

multicast_routing_entry – The route to add

Raises:

PacmanAlreadyExistsException – If a routing entry with the same key-mask combination already exists

property chip: Chip

The chip of this table.

abstract property multicast_routing_entries: Collection[MulticastRoutingEntry]

The multicast routing entries in the table.

abstract property number_of_defaultable_entries: int

The number of multicast routing entries that are set to be defaultable within this multicast routing table.

abstract property number_of_entries: int

The number of multicast routing entries there are in the multicast routing table.

abstract property x: int

The X-coordinate of the chip of this table.

abstract property y: int

The Y-coordinate of the chip of this table.

class pacman.model.routing_tables.CompressedMulticastRoutingTable(x: int, y: int, multicast_routing_entries: Iterable[MulticastRoutingEntry] = ())

Bases: AbstractMulticastRoutingTable

Represents a compressed routing table for a chip. Compressed tables have a maximum size, ensuring that they fit in the hardware available.

Parameters:

  • x – The x-coordinate of the chip for which this is the routing table

  • y – The y-coordinate of the chip for which this is the routing tables

  • multicast_routing_entries – The routing entries to add to the table

Raises:

pacman.exceptions.PacmanAlreadyExistsException – If any two routing entries contain the same key-mask combination

add_multicast_routing_entry(multicast_routing_entry: MulticastRoutingEntry) → None[source]

Adds a routing entry to this table.

Parameters:

multicast_routing_entry – The route to add

Raises:

PacmanAlreadyExistsException – If a routing entry with the same key-mask combination already exists

property multicast_routing_entries: Collection[MulticastRoutingEntry]

The multicast routing entries in the table.

property number_of_defaultable_entries: int

The number of multicast routing entries that are set to be defaultable within this multicast routing table.

property number_of_entries: int

The number of multicast routing entries there are in the multicast routing table.

property x: int

The X-coordinate of the chip of this table.

property y: int

The Y-coordinate of the chip of this table.

class pacman.model.routing_tables.MulticastRoutingTables(routing_tables: Iterable[AbstractMulticastRoutingTable] = ())

Bases: object

Represents the multicast routing tables for a number of chips.

Note

The tables in an instance of this class should be either all uncompressed tables, or all compressed tables.

Parameters:

routing_tables – The routing tables to add

Raises:

PacmanAlreadyExistsException – If any two routing tables are for the same chip

add_routing_table(routing_table: AbstractMulticastRoutingTable) → None[source]

Add a routing table.

Parameters:

routing_table – a routing table to add

Raises:

PacmanAlreadyExistsException – If a routing table already exists for the chip

get_max_number_of_entries() → int[source]

The maximum number of multicast routing entries there are in any multicast routing table.

Will return zero if there are no routing tables

get_routing_table_for_chip(x: int, y: int) → AbstractMulticastRoutingTable | None[source]

Get a routing table for a particular chip.

Parameters:

  • x – The X-coordinate of the chip

  • y – The Y-coordinate of the chip

Returns:

The routing table, or None if no such table exists

get_total_number_of_entries() → int[source]

The total number of multicast routing entries there are in all multicast routing table.

Will return zero if there are no routing tables

property routing_tables: Collection[AbstractMulticastRoutingTable]

The routing tables stored within.

Returns:

an iterable of routing tables

class pacman.model.routing_tables.UnCompressedMulticastRoutingTable(x: int, y: int, multicast_routing_entries: Iterable[MulticastRoutingEntry] = ())

Bases: AbstractMulticastRoutingTable

Represents a uncompressed routing table for a chip. Uncompressed tables have no maximum size, but may not be deployable to hardware without being compressed.

Parameters:

  • x – The x-coordinate of the chip for which this is the routing table

  • y – The y-coordinate of the chip for which this is the routing tables

  • multicast_routing_entries – The routing entries to add to the table

Raises:

PacmanAlreadyExistsException – If any two routing entries contain the same key-mask combination

add_multicast_routing_entry(multicast_routing_entry: MulticastRoutingEntry) → None[source]

Adds a routing entry to this table.

Parameters:

multicast_routing_entry – The route to add

Raises:

PacmanAlreadyExistsException – If a routing entry with the same key-mask combination already exists

property multicast_routing_entries: Collection[MulticastRoutingEntry]

The multicast routing entries in the table.

property number_of_defaultable_entries: int

The number of multicast routing entries that are set to be defaultable within this multicast routing table.

property number_of_entries: int

The number of multicast routing entries there are in the multicast routing table.

property x: int

The X-coordinate of the chip of this table.

property y: int

The Y-coordinate of the chip of this table.