# 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
# 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.
#
# 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.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