Source code for spinnman.model.chip_summary_info
# 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/>.
import struct
from spinnman.model.enums import CPUState
_THREE_WORDS = struct.Struct("<3I")
_TWO_BYTES = struct.Struct("<BB")
_FOUR_BYTES = struct.Struct("<4B")
_EIGHTEEN_BYTES = struct.Struct("<18B")
[docs]class ChipSummaryInfo(object):
""" Represents the chip summary information read via an SCP command
"""
__slots__ = [
"_core_states",
"_ethernet_ip_address",
"_is_ethernet_available",
"_largest_free_sdram_block",
"_largest_free_sram_block",
"_n_cores",
"_n_free_multicast_routing_entries",
"_nearest_ethernet_x",
"_nearest_ethernet_y",
"_working_links",
"_x", "_y"]
def __init__(self, chip_summary_data, offset, x, y):
"""
:param chip_summary_data: The data from the SCP response
:type chip_summary_data: bytearray
:param offset: The offset into the data where the data starts
:type offset: int
:param x: The x-coordinate of the chip that this data is from
:param y: The y-coordinate of the chip that this data is from
"""
(chip_summary_flags, self._largest_free_sdram_block,
self._largest_free_sram_block) = _THREE_WORDS.unpack_from(
chip_summary_data, offset)
self._n_cores = chip_summary_flags & 0x1F
self._working_links = [
link for link in range(0, 6)
if chip_summary_flags >> (8 + link) & 1 != 0]
self._n_free_multicast_routing_entries = \
(chip_summary_flags >> 14) & 0x7FF
self._is_ethernet_available = bool(chip_summary_flags & (1 << 25))
data_offset = offset + 12
self._core_states = [
CPUState(state) for state in
_EIGHTEEN_BYTES.unpack_from(chip_summary_data, data_offset)]
data_offset += 18
self._x = x
self._y = y
self._nearest_ethernet_x = None
self._nearest_ethernet_y = None
self._ethernet_ip_address = None
(self._nearest_ethernet_y, self._nearest_ethernet_x) = \
_TWO_BYTES.unpack_from(chip_summary_data, data_offset)
data_offset += 2
ip_data = _FOUR_BYTES.unpack_from(chip_summary_data, data_offset)
ethernet_ip_address = "{}.{}.{}.{}".format(
ip_data[0], ip_data[1], ip_data[2], ip_data[3])
if ethernet_ip_address != "0.0.0.0":
self._ethernet_ip_address = ethernet_ip_address
data_offset += 4
@property
def x(self):
""" The x-coordinate of the chip that this data is from
:rtype: int
"""
return self._x
@property
def y(self):
""" The y-coordinate of the chip that this data is from
:rtype: int
"""
return self._y
@property
def n_cores(self):
""" The number of cores working on the chip (including monitors)
:rtype: int
"""
return self._n_cores
@property
def core_states(self):
""" The state of the cores on the chip (list of one per core)
:rtype: list(:py:class:`spinnman.model.enums.CPUState`)
"""
return self._core_states
@property
def working_links(self):
""" The IDs of the working links outgoing from this chip
:rtype: list(int)
"""
return self._working_links
@property
def is_ethernet_available(self):
""" Determines if the Ethernet connection is available on this chip
:rtype: bool
"""
return self._is_ethernet_available
@property
def n_free_multicast_routing_entries(self):
""" The number of multicast routing entries free on this chip
:rtype: int
"""
return self._n_free_multicast_routing_entries
@property
def largest_free_sdram_block(self):
""" The size of the largest block of free SDRAM in bytes
:rtype: int
"""
return self._largest_free_sdram_block
@property
def largest_free_sram_block(self):
""" The size of the largest block of free SRAM in bytes
:rtype: int
"""
return self._largest_free_sram_block
@property
def nearest_ethernet_x(self):
""" The x coordinate of the nearest Ethernet chip
:rtype: int
"""
return self._nearest_ethernet_x
@property
def nearest_ethernet_y(self):
""" The y coordinate of the nearest Ethernet chip
:rtype: int
"""
return self._nearest_ethernet_y
@property
def ethernet_ip_address(self):
""" The IP address of the Ethernet if up, or None if not
:rtype: str
"""
return self._ethernet_ip_address