Source code for spinnman.processes.most_direct_connection_selector

# Copyright (c) 2017-2019 The University of Manchester
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

from spinn_utilities.overrides import overrides
from .abstract_multi_connection_process_connection_selector import (
    AbstractMultiConnectionProcessConnectionSelector)


[docs]class MostDirectConnectionSelector( AbstractMultiConnectionProcessConnectionSelector): """ A selector that goes for the most direct connection for the message. """ __slots__ = [ "_connections", "_first_connection", "_machine"] # pylint: disable=super-init-not-called def __init__(self, machine, connections): """ :param ~spinn_machine.Machine machine: :param list(SCAMPConnection) connections: The connections to be used """ self._machine = machine self._connections = dict() self._first_connection = None for connection in connections: if connection.chip_x == 0 and connection.chip_y == 0: self._first_connection = connection self._connections[ (connection.chip_x, connection.chip_y)] = connection if self._first_connection is None: self._first_connection = next(iter(connections))
[docs] def set_machine(self, new_machine): """ :param ~spinn_machine.Machine new_machine: """ self._machine = new_machine
[docs] @overrides( AbstractMultiConnectionProcessConnectionSelector.get_next_connection) def get_next_connection(self, message): if self._machine is None or len(self._connections) == 1: return self._first_connection chip = self._machine.get_chip_at( message.sdp_header.destination_chip_x, message.sdp_header.destination_chip_y) key = (chip.nearest_ethernet_x, chip.nearest_ethernet_y) if key not in self._connections: return self._first_connection return self._connections[key]