Source code for spinn_front_end_common.interface.interface_functions.process_partition_constraints

# 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
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <>.

from spinn_utilities.progress_bar import ProgressBar
from pacman.model.constraints.key_allocator_constraints import (
from spinn_front_end_common.abstract_models import (

[docs]class ProcessPartitionConstraints(object): """ Adds constraints to partitions if the vertices at either end of the\ partition request it. """
[docs] def __call__(self, machine_graph): """ :param ~pacman.model.graphs.machine.MachineGraph machine_graph: """ # generate progress bar progress = ProgressBar( machine_graph.n_vertices, "Getting constraints for machine graph") # iterate over each partition in the graph for vertex in progress.over(machine_graph.vertices): for partition in machine_graph.\ get_multicast_edge_partitions_starting_at_vertex( vertex): self._process_partition(partition)
@staticmethod def _process_partition(partition): """ Process the partition by checking the pre_vertex and post vertices Note: The machine level is checked first and only only if that does not provide the api the app vertex is check next :param ~.OutgoingEdgePartition partition: """ vertex = partition.pre_vertex # add_vertex_constraints for constraint in vertex.constraints: if isinstance(constraint, AbstractKeyAllocatorConstraint): partition.add_constraint(constraint) # call get_outgoing_partition_constraints method on pre_vertex if isinstance(vertex, AbstractProvidesOutgoingPartitionConstraints): partition.add_constraints( vertex.get_outgoing_partition_constraints(partition)) else: vertex = vertex.app_vertex if isinstance(vertex, AbstractProvidesOutgoingPartitionConstraints): partition.add_constraints( vertex.get_outgoing_partition_constraints(partition)) # call get_incoming_partition_constraints on post_vertex for edge in partition.edges: post_vertex = edge.post_vertex if isinstance(post_vertex, AbstractProvidesIncomingPartitionConstraints): partition.add_constraints( post_vertex.get_incoming_partition_constraints(partition)) elif edge.app_edge: post_vertex = edge.app_edge.post_vertex if isinstance(post_vertex, AbstractProvidesIncomingPartitionConstraints): partition.add_constraints( post_vertex.get_incoming_partition_constraints( partition))