Source code for spinn_front_end_common.interface.interface_functions.sdram_outgoing_partition_allocator

# Copyright (c) 2019-2020 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
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#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# GNU General Public License for more details.
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from spinn_utilities.progress_bar import ProgressBar
from pacman.model.graphs.machine import SourceSegmentedSDRAMMachinePartition
from spinn_front_end_common.utilities.exceptions import SpinnFrontEndException


[docs]class SDRAMOutgoingPartitionAllocator(object):
[docs] def __call__(self, machine_graph, transceiver, placements, app_id): progress_bar = ProgressBar( total_number_of_things_to_do=len(machine_graph.vertices), string_describing_what_being_progressed=( "Allocating SDRAM for SDRAM outgoing egde partitions")) for machine_vertex in machine_graph.vertices: sdram_partitions = ( machine_graph.get_sdram_edge_partitions_starting_at_vertex( machine_vertex)) for sdram_partition in sdram_partitions: # get placement, ones where the src is multiple, # you need to ask for the first pre vertex if isinstance( sdram_partition, SourceSegmentedSDRAMMachinePartition): placement = placements.get_placement_of_vertex( next(iter(sdram_partition.pre_vertices))) else: placement = placements.get_placement_of_vertex( sdram_partition.pre_vertex) # total sdram total_sdram = (sdram_partition.total_sdram_requirements()) # if bust, throw exception if total_sdram == 0: raise SpinnFrontEndException( "Cannot allocate sdram size of 0 for " "partition {}".format(sdram_partition)) # allocate sdram_base_address = transceiver.malloc_sdram( placement.x, placement.y, total_sdram, app_id) # update sdram_partition.sdram_base_address = (sdram_base_address) progress_bar.update() progress_bar.end()