Source code for pacman.model.resources.constant_sdram

# 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.
#
# 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_sdram import AbstractSDRAM


class ConstantSDRAM(AbstractSDRAM):
    """ Represents an amount of SDRAM used  on a chip in the machine.

    This is used when the amount of SDRAM needed is not effected by runtime
    """

    __slots__ = [
        # The amount of SDRAM in bytes
        "_sdram"
    ]

    def __init__(self, sdram):
        """
        :param sdram: The amount of SDRAM in bytes
        :type sdram: int or ~numpy.int64
        """
        self._sdram = int(sdram)

[docs] @overrides(AbstractSDRAM.get_total_sdram) def get_total_sdram(self, n_timesteps): # @UnusedVariable return self._sdram
@property @overrides(AbstractSDRAM.fixed) def fixed(self): return self._sdram @property @overrides(AbstractSDRAM.per_timestep) def per_timestep(self): return 0 def __add__(self, other): if isinstance(other, ConstantSDRAM): return ConstantSDRAM( self._sdram + other.fixed) else: # The other is more complex so delegate to it return other.__add__(self) def __sub__(self, other): if isinstance(other, ConstantSDRAM): return ConstantSDRAM( self._sdram - other.fixed) else: # The other is more complex so delegate to it return other.sub_from(self)
[docs] @overrides(AbstractSDRAM.sub_from) def sub_from(self, other): if isinstance(other, ConstantSDRAM): return ConstantSDRAM( other.fixed - self._sdram) else: # The other is more complex so delegate to it return other - self
[docs] @overrides(AbstractSDRAM.report) def report(self, timesteps, indent="", preamble="", target=None): print(indent, preamble, "Constant {} bytes".format(self._sdram), file=target)