Source code for pacman.operations.routing_table_generators.basic_routing_table_generator

from pacman.model.routing_tables \
    import MulticastRoutingTable, MulticastRoutingTables

from spinn_machine import MulticastRoutingEntry
from spinn_utilities.progress_bar import ProgressBar

MAX_KEYS_SUPPORTED = 2048
MASK = 0xFFFFF800


class BasicRoutingTableGenerator(object):
    """ An basic algorithm that can produce routing tables
    """

    __slots__ = []

    def __call__(
            self, routing_infos, routing_table_by_partitions,
            machine):
        """

        :param routing_infos:
        :param routing_table_by_partitions:
        :param machine:
        """
        progress = ProgressBar(machine.n_chips, "Generating routing tables")
        routing_tables = MulticastRoutingTables()
        for chip in progress.over(machine.chips):
            partitions_in_table = routing_table_by_partitions.\
                get_entries_for_router(chip.x, chip.y)
            if len(partitions_in_table) != 0:
                routing_table = MulticastRoutingTable(chip.x, chip.y)
                for partition in partitions_in_table:
                    r_info = routing_infos.get_routing_info_from_partition(
                        partition)
                    entry = partitions_in_table[partition]
                    for key_and_mask in r_info.keys_and_masks:
                        multicast_routing_entry = MulticastRoutingEntry(
                            routing_entry_key=key_and_mask.key_combo,
                            defaultable=entry.defaultable,
                            mask=key_and_mask.mask,
                            link_ids=entry.out_going_links,
                            processor_ids=entry.out_going_processors)
                        routing_table.add_multicast_routing_entry(
                            multicast_routing_entry)
                routing_tables.add_routing_table(routing_table)

        return routing_tables