spinn_front_end_common.utility_models package

Submodules

spinn_front_end_common.utility_models.chip_power_monitor_application_vertex module

class spinn_front_end_common.utility_models.chip_power_monitor_application_vertex.ChipPowerMonitorApplicationVertex(label, constraints, n_samples_per_recording, sampling_frequency)

Bases: pacman.model.graphs.application.application_vertex.ApplicationVertex, spinn_front_end_common.abstract_models.abstract_has_associated_binary.AbstractHasAssociatedBinary, spinn_front_end_common.abstract_models.abstract_generates_data_specification.AbstractGeneratesDataSpecification

class for representing idle time recording code in a application graph.

chip power monitor application vertex constructor

Parameters:

• label – vertex label
• constraints – constraints for the vertex
• n_samples_per_recording – how many samples to take before / recording to sdram the total
• sampling_frequency – how many microseconds between sampling

create_machine_vertex(vertex_slice, resources_required, label=None, constraints=None)

Create a machine vertex from this application vertex

Parameters:

• vertex_slice – The slice of atoms that the machine vertex will cover
• resources_required – the resources used by the machine vertex
• constraints – Constraints to be passed on to the machine vertex

generate_data_specification(*args, **kwargs)

Generate a data specification

Parameters:

• spec (data_specification.DataSpecificationGenerator) – The data specification to write to
• placement – the placement object this spec is associated with

Return type:

None

get_binary_file_name()

Get the binary name to be run for this vertex

Return type:str

get_binary_start_type()

Get the start type of the binary to be run

Return type:spinn_front_end_common.utilities.utility_objs.executable_start_type.ExecutableStartType

get_resources_used_by_atoms(vertex_slice)

Get the separate resource requirements for a range of atoms

Parameters:vertex_slice (pacman.model.graph.slice.Slice) – the low value of atoms to calculate resources from Returns:a Resource container that contains a CPUCyclesPerTickResource, DTCMResource and SDRAMResource Return type:pacman.model.resources.ResourceContainer Raises:None – this method does not raise any known exception

n_atoms

The number of atoms in the vertex

Returns:The number of atoms Return type:int

spinn_front_end_common.utility_models.chip_power_monitor_machine_vertex module

class spinn_front_end_common.utility_models.chip_power_monitor_machine_vertex.ChipPowerMonitorMachineVertex(*args, **kwargs)

Bases: pacman.model.graphs.machine.machine_vertex.MachineVertex, spinn_front_end_common.abstract_models.abstract_has_associated_binary.AbstractHasAssociatedBinary, spinn_front_end_common.abstract_models.abstract_generates_data_specification.AbstractGeneratesDataSpecification, spinn_front_end_common.interface.buffer_management.buffer_models.abstract_receive_buffers_to_host.AbstractReceiveBuffersToHost

machine vertex for c code representing functionality to record / idle times in a machine graph

class CHIP_POWER_MONITOR_REGIONS

Bases: enum.Enum

CONFIG = 1

RECORDING = 2

SYSTEM = 0

CONFIG_SIZE_IN_BYTES = 8

DEFAULT_MALLOCS_USED = 3

MAX_BUFFER_SIZE = 1048576

MAX_CORES_PER_CHIP = 18

RECORDING_SIZE_PER_ENTRY = 72

SAMPLE_RECORDING_REGION = 0

static binary_file_name()

returns the string binary file name

Returns:basestring

static binary_start_type()

static method to allow app verts to use this

Returns:starttype enum

generate_data_specification(*args, **kwargs)

Generate a data specification

Parameters:

• spec (data_specification.DataSpecificationGenerator) – The data specification to write to
• placement – the placement object this spec is associated with

Return type:

None

get_binary_file_name()

Get the binary name to be run for this vertex

Return type:str

get_binary_start_type()

Get the start type of the binary to be run

Return type:spinn_front_end_common.utilities.utility_objs.executable_start_type.ExecutableStartType

get_minimum_buffer_sdram_usage(*args, **kwargs)

Get the minimum amount of SDRAM to reserve for buffers

get_n_timesteps_in_buffer_space(*args, **kwargs)

Get the number of timesteps that can be stored fully in the given buffer space in bytes

Parameters:

• buffer_space – The buffer space in bytes
• machine_time_step – The size of each time step

Returns:

The number of time steps that can be stored in the buffer

Return type:

int

get_recorded_data(placement, buffer_manager)

get data from sdram given placement and buffer manager

Parameters:

• placement – the location on machien to get data from
• buffer_manager – the buffer manager that might have data

Returns:

results

Return type:

numpy array with 1 dimension

get_recorded_region_ids()

Get the recording region ids that have been recorded using buffering

Returns:The region numbers that have active recording Return type:iterable of int

get_recording_region_base_address(txrx, placement)

Get the recording region base address

Parameters:

• txrx – the SpiNNMan instance
• placement – the placement object of the core to find the address of

Returns:

the base address of the recording region

static get_resources(n_machine_time_steps, time_step, time_scale_factor, n_samples_per_recording, sampling_frequency)

get resources used by this vertex

:return:Resource container

n_samples_per_recording

resources_required

The resources required by the vertex

Return type:pacman.model.resources.ResourceContainer

sampling_frequency

static sdram_calculation()

calculates the sdram requirements of the vertex

Returns:int

spinn_front_end_common.utility_models.command_sender module

class spinn_front_end_common.utility_models.command_sender.CommandSender(label, constraints)

Bases: pacman.model.graphs.application.application_vertex.ApplicationVertex, spinn_front_end_common.abstract_models.abstract_generates_data_specification.AbstractGeneratesDataSpecification, spinn_front_end_common.abstract_models.abstract_has_associated_binary.AbstractHasAssociatedBinary, spinn_front_end_common.abstract_models.abstract_provides_outgoing_partition_constraints.AbstractProvidesOutgoingPartitionConstraints

A utility for sending commands to a vertex (possibly an external device) at fixed times in the simulation

add_commands(start_resume_commands, pause_stop_commands, timed_commands, vertex_to_send_to)

Add commands to be sent down a given edge

Parameters:

• start_resume_commands (iterable of spinn_front_end_common.utility_models.multi_cast_command.MultiCastCommand) – The commands to send when the simulation starts or resumes from pause
• pause_stop_commands (iterable of spinn_front_end_common.utility_models.multi_cast_command.MultiCastCommand) – the commands to send when the simulation stops or pauses after running
• timed_commands (iterable of spinn_front_end_common.utility_models.multi_cast_command.MultiCastCommand) – The commands to send at specific times
• vertex_to_send_to – The vertex these commands are to be sent to

create_machine_vertex(vertex_slice, resources_required, label=None, constraints=None)

Create a machine vertex from this application vertex

Parameters:

• vertex_slice – The slice of atoms that the machine vertex will cover
• resources_required – the resources used by the machine vertex
• constraints – Constraints to be passed on to the machine vertex

dependent_vertices()

Return the vertices which this vertex depends upon

edges_and_partitions()

generate_data_specification(*args, **kwargs)

Generate a data specification

Parameters:

• spec (data_specification.DataSpecificationGenerator) – The data specification to write to
• placement – the placement object this spec is associated with

Return type:

None

get_binary_file_name()

Get the binary name to be run for this vertex

Return type:str Return a string representation of the models binary

get_binary_start_type()

Get the start type of the binary to be run

Return type:spinn_front_end_common.utilities.utility_objs.executable_start_type.ExecutableStartType

get_outgoing_partition_constraints(partition)

Get constraints to be added to the given edge that comes out of this vertex

Parameters:partition – An edge that comes out of this vertex Returns:A list of constraints Return type:list of pacman.model.constraints.abstract_constraint.AbstractConstraint

get_resources_used_by_atoms(vertex_slice)

Get the separate resource requirements for a range of atoms

Parameters:vertex_slice (pacman.model.graph.slice.Slice) – the low value of atoms to calculate resources from Returns:a Resource container that contains a CPUCyclesPerTickResource, DTCMResource and SDRAMResource Return type:pacman.model.resources.ResourceContainer Raises:None – this method does not raise any known exception

n_atoms

The number of atoms in the vertex

Returns:The number of atoms Return type:int

spinn_front_end_common.utility_models.command_sender_machine_vertex module

class spinn_front_end_common.utility_models.command_sender_machine_vertex.CommandSenderMachineVertex(constraints, resources_required, label, commands_at_start_resume, commands_at_pause_stop, timed_commands)

Bases: pacman.model.graphs.machine.machine_vertex.MachineVertex, spinn_front_end_common.interface.provenance.provides_provenance_data_from_machine_impl.ProvidesProvenanceDataFromMachineImpl, spinn_front_end_common.abstract_models.abstract_has_associated_binary.AbstractHasAssociatedBinary

BINARY_FILE_NAME = 'command_sender_multicast_source.aplx'

class DATA_REGIONS

Bases: enum.Enum

COMMANDS_AT_START_RESUME = 3

COMMANDS_AT_STOP_PAUSE = 4

COMMANDS_WITH_ARBITRARY_TIMES = 2

PROVENANCE_REGION = 5

SETUP = 1

SYSTEM_REGION = 0

TOTAL_REQUIRED_MALLOCS = 5

generate_data_specification(spec, placement, machine_time_step, time_scale_factor, n_machine_time_steps)

get_binary_file_name()

Get the binary name to be run for this vertex

Return type:str

Return a string representation of the models binary

get_binary_start_type()

Get the start type of the binary to be run

Return type:spinn_front_end_common.utilities.utility_objs.executable_start_type.ExecutableStartType

static get_n_command_bytes(commands)

static get_number_of_mallocs_used_by_dsg()

static get_timed_commands_bytes(timed_commands)

resources_required

The resources required by the vertex

Return type:pacman.model.resources.ResourceContainer

spinn_front_end_common.utility_models.live_packet_gather module

class spinn_front_end_common.utility_models.live_packet_gather.LivePacketGather(hostname, port, board_address=None, tag=None, strip_sdp=True, use_prefix=False, key_prefix=None, prefix_type=None, message_type=<EIEIOType.KEY_32_BIT: 2>, right_shift=0, payload_as_time_stamps=True, use_payload_prefix=True, payload_prefix=None, payload_right_shift=0, number_of_packets_sent_per_time_step=0, constraints=None, label=None)

Bases: spinn_front_end_common.abstract_models.abstract_generates_data_specification.AbstractGeneratesDataSpecification, spinn_front_end_common.abstract_models.abstract_has_associated_binary.AbstractHasAssociatedBinary, pacman.model.graphs.application.application_vertex.ApplicationVertex

A model which stores all the events it receives during a timer tick and then compresses them into Ethernet packets and sends them out of a spinnaker machine.

create_machine_vertex(vertex_slice, resources_required, label=None, constraints=None)

Create a machine vertex from this application vertex

Parameters:

• vertex_slice – The slice of atoms that the machine vertex will cover
• resources_required – the resources used by the machine vertex
• constraints – Constraints to be passed on to the machine vertex

generate_data_specification(spec, placement)

Generate a data specification

Parameters:

• spec (data_specification.DataSpecificationGenerator) – The data specification to write to
• placement – the placement object this spec is associated with

Return type:

None

get_binary_file_name()

Get the binary name to be run for this vertex

Return type:str

get_binary_start_type()

Get the start type of the binary to be run

Return type:spinn_front_end_common.utilities.utility_objs.executable_start_type.ExecutableStartType

get_resources_used_by_atoms(vertex_slice)

Get the separate resource requirements for a range of atoms

Parameters:vertex_slice (pacman.model.graph.slice.Slice) – the low value of atoms to calculate resources from Returns:a Resource container that contains a CPUCyclesPerTickResource, DTCMResource and SDRAMResource Return type:pacman.model.resources.ResourceContainer Raises:None – this method does not raise any known exception

n_atoms

The number of atoms in the vertex

Returns:The number of atoms Return type:int

spinn_front_end_common.utility_models.live_packet_gather_machine_vertex module

class spinn_front_end_common.utility_models.live_packet_gather_machine_vertex.LivePacketGatherMachineVertex(label, use_prefix=False, key_prefix=None, prefix_type=None, message_type=<EIEIOType.KEY_32_BIT: 2>, right_shift=0, payload_as_time_stamps=True, use_payload_prefix=True, payload_prefix=None, payload_right_shift=0, number_of_packets_sent_per_time_step=0, hostname=None, port=None, strip_sdp=None, board_address=None, tag=None, constraints=None)

Bases: pacman.model.graphs.machine.machine_vertex.MachineVertex, spinn_front_end_common.interface.provenance.provides_provenance_data_from_machine_impl.ProvidesProvenanceDataFromMachineImpl, spinn_front_end_common.abstract_models.abstract_generates_data_specification.AbstractGeneratesDataSpecification, spinn_front_end_common.abstract_models.abstract_has_associated_binary.AbstractHasAssociatedBinary, spinn_front_end_common.abstract_models.abstract_supports_database_injection.AbstractSupportsDatabaseInjection

N_ADDITIONAL_PROVENANCE_ITEMS = 2

generate_data_specification(*args, **kwargs)

Generate a data specification

Parameters:

• spec (data_specification.DataSpecificationGenerator) – The data specification to write to
• placement – the placement object this spec is associated with

Return type:

None

get_binary_file_name()

Get the binary name to be run for this vertex

Return type:str

get_binary_start_type()

Get the start type of the binary to be run

Return type:spinn_front_end_common.utilities.utility_objs.executable_start_type.ExecutableStartType

static get_cpu_usage()

Get the CPU used by this vertex

Returns:0 Return type:int

static get_dtcm_usage()

Get the DTCM used by this vertex

get_provenance_data_from_machine(transceiver, placement)

Get provenance from the machine

Parameters:

• transceiver – spinnman interface to the machine
• placement – the location of this vertex on the machine

static get_sdram_usage()

Get the SDRAM used by this vertex

is_in_injection_mode

Whether this vertex is actually in injection mode.

resources_required

The resources required by the vertex

Return type:pacman.model.resources.ResourceContainer

spinn_front_end_common.utility_models.multi_cast_command module

class spinn_front_end_common.utility_models.multi_cast_command.MultiCastCommand(key, payload=None, time=None, repeat=0, delay_between_repeats=0)

Bases: object

A command to be sent to a vertex

Parameters:

• key (int) – The key of the command
• payload (int) – The payload of the command
• time (int) – The time within the simulation at which to send the command, or None if this is not a timed command
• repeat (int) – The number of times that the command should be repeated after sending it once. This could be used to ensure that the command is sent despite lost packets. Must be between 0 and 65535
• delay_between_repeats (int) – The amount of time in micro seconds to wait between sending repeats of the same command. Must be between 0 and 65535, and must be 0 if repeat is 0

Raises:

SpynnakerException – If the repeat or delay are out of range

delay_between_repeats

is_payload

Determine if this command has a payload. By default, this returns True if the payload passed in to the constructor is not None, but this can be overridden to indicate that a payload will be generated, despite None being passed to the constructor

Returns:True if there is a payload, False otherwise Return type:bool

is_timed

key

payload

Get the payload of the command.

Returns:The payload of the command, or None if there is no payload Return type:int

repeat

time

spinn_front_end_common.utility_models.reverse_ip_tag_multi_cast_source module

class spinn_front_end_common.utility_models.reverse_ip_tag_multi_cast_source.ReverseIpTagMultiCastSource(n_keys, label=None, constraints=None, max_atoms_per_core=9223372036854775807, board_address=None, receive_port=None, receive_sdp_port=1, receive_tag=None, receive_rate=10, virtual_key=None, prefix=None, prefix_type=None, check_keys=False, send_buffer_times=None, send_buffer_partition_id=None, send_buffer_max_space=1048576, send_buffer_space_before_notify=640, buffer_notification_ip_address=None, buffer_notification_port=None, buffer_notification_tag=None, reserve_reverse_ip_tag=False)

Bases: pacman.model.graphs.application.application_vertex.ApplicationVertex, spinn_front_end_common.abstract_models.abstract_generates_data_specification.AbstractGeneratesDataSpecification, spinn_front_end_common.abstract_models.abstract_has_associated_binary.AbstractHasAssociatedBinary, spinn_front_end_common.abstract_models.abstract_provides_outgoing_partition_constraints.AbstractProvidesOutgoingPartitionConstraints, spinn_front_end_common.abstract_models.impl.provides_key_to_atom_mapping_impl.ProvidesKeyToAtomMappingImpl

A model which will allow events to be injected into a spinnaker machine and converted into multicast packets.

Parameters:

• n_keys – The number of keys to be sent via this multicast source
• label – The label of this vertex
• constraints – Any initial constraints to this vertex
• board_address – The IP address of the board on which to place this vertex if receiving data, either buffered or live (by default, any board is chosen)
• receive_port – The port on the board that will listen for incoming event packets (default is to disable this feature; set a value to enable it)
• receive_sdp_port – The SDP port to listen on for incoming event packets (defaults to 1)
• receive_tag – The IP tag to use for receiving live events (uses any by default)
• receive_rate – The estimated rate of packets that will be sent by this source
• virtual_key – The base multicast key to send received events with (assigned automatically by default)
• prefix – The prefix to “or” with generated multicast keys (default is no prefix)
• prefix_type – Whether the prefix should apply to the upper or lower half of the multicast keys (default is upper half)
• check_keys – True if the keys of received events should be verified before sending (default False)
• send_buffer_times – An array of arrays of times at which keys should be sent (one array for each key, default disabled)
• send_buffer_partition_id – The id of the partition containing the edges down which the events are to be sent
• send_buffer_max_space – The maximum amount of space to use of the SDRAM on the machine (default is 1MB)
• send_buffer_space_before_notify – The amount of space free in the sending buffer before the machine will ask the host for more data (default setting is optimised for most cases)
• buffer_notification_ip_address – The IP address of the host that will send new buffers (must be specified if a send buffer is specified or if recording will be used)
• buffer_notification_port – The port that the host that will send new buffers is listening on (must be specified if a send buffer is specified, or if recording will be used)
• buffer_notification_tag – The IP tag to use to notify the host about space in the buffer (default is to use any tag)

create_machine_vertex(vertex_slice, resources_required, label=None, constraints=None)

Create a machine vertex from this application vertex

Parameters:

• vertex_slice – The slice of atoms that the machine vertex will cover
• resources_required – the resources used by the machine vertex
• constraints – Constraints to be passed on to the machine vertex

enable_recording(record_buffer_size=1048576, buffer_size_before_receive=16384, time_between_requests=0)

generate_data_specification(spec, placement)

Generate a data specification

Parameters:

• spec (data_specification.DataSpecificationGenerator) – The data specification to write to
• placement – the placement object this spec is associated with

Return type:

None

get_binary_file_name()

Get the binary name to be run for this vertex

Return type:str

get_binary_start_type()

Get the start type of the binary to be run

Return type:spinn_front_end_common.utilities.utility_objs.executable_start_type.ExecutableStartType

get_outgoing_partition_constraints(partition)

Get constraints to be added to the given edge that comes out of this vertex

Parameters:partition – An edge that comes out of this vertex Returns:A list of constraints Return type:list of pacman.model.constraints.abstract_constraint.AbstractConstraint

get_resources_used_by_atoms(vertex_slice)

Get the separate resource requirements for a range of atoms

Parameters:vertex_slice (pacman.model.graph.slice.Slice) – the low value of atoms to calculate resources from Returns:a Resource container that contains a CPUCyclesPerTickResource, DTCMResource and SDRAMResource Return type:pacman.model.resources.ResourceContainer Raises:None – this method does not raise any known exception

n_atoms

The number of atoms in the vertex

Returns:The number of atoms Return type:int

send_buffer_times

spinn_front_end_common.utility_models.reverse_ip_tag_multicast_source_machine_vertex module

class spinn_front_end_common.utility_models.reverse_ip_tag_multicast_source_machine_vertex.ReverseIPTagMulticastSourceMachineVertex(*args, **kwargs)

Bases: pacman.model.graphs.machine.machine_vertex.MachineVertex, spinn_front_end_common.abstract_models.abstract_generates_data_specification.AbstractGeneratesDataSpecification, spinn_front_end_common.abstract_models.abstract_has_associated_binary.AbstractHasAssociatedBinary, spinn_front_end_common.abstract_models.abstract_supports_database_injection.AbstractSupportsDatabaseInjection, spinn_front_end_common.interface.provenance.provides_provenance_data_from_machine_impl.ProvidesProvenanceDataFromMachineImpl, spinn_front_end_common.abstract_models.abstract_provides_outgoing_partition_constraints.AbstractProvidesOutgoingPartitionConstraints, spinn_front_end_common.interface.buffer_management.buffer_models.sends_buffers_from_host_pre_buffered_impl.SendsBuffersFromHostPreBufferedImpl, spinn_front_end_common.interface.buffer_management.buffer_models.abstract_receive_buffers_to_host.AbstractReceiveBuffersToHost, spinn_front_end_common.abstract_models.abstract_recordable.AbstractRecordable

A model which allows events to be injected into spinnaker and converted in to multicast packets

enable_recording(record_buffer_size=1048576, buffer_size_before_receive=16384, time_between_triggers=0)

Enable recording of the keys sent

Parameters:

• record_buffer_size (int) – The size of the recording buffer in bytes. Note that when using automatic pause and resume, this will be used as the minimum size of the buffer
• buffer_size_before_receive (int) – The size that the buffer can grow to before a read request is issued to the host (in bytes)
• time_between_triggers (int) – The minimum time between the sending of read requests

generate_data_specification(*args, **kwargs)

Generate a data specification

Parameters:

• spec (data_specification.DataSpecificationGenerator) – The data specification to write to
• placement – the placement object this spec is associated with

Return type:

None

get_binary_file_name()

Get the binary name to be run for this vertex

Return type:str

get_binary_start_type()

Get the start type of the binary to be run

Return type:spinn_front_end_common.utilities.utility_objs.executable_start_type.ExecutableStartType

static get_cpu_usage()

static get_dtcm_usage()

get_minimum_buffer_sdram_usage()

Get the minimum amount of SDRAM to reserve for buffers

get_n_timesteps_in_buffer_space(buffer_space, machine_time_step)

Get the number of timesteps that can be stored fully in the given buffer space in bytes

Parameters:

• buffer_space – The buffer space in bytes
• machine_time_step – The size of each time step

Returns:

The number of time steps that can be stored in the buffer

Return type:

int

get_outgoing_partition_constraints(partition)

Get constraints to be added to the given edge that comes out of this vertex

Parameters:partition – An edge that comes out of this vertex Returns:A list of constraints Return type:list of pacman.model.constraints.abstract_constraint.AbstractConstraint

get_provenance_data_from_machine(transceiver, placement)

Get an iterable of provenance data items

Parameters:

• transceiver – the SpinnMan interface object
• placement – the placement of the object

Returns:

iterable of ProvenanceDataItem

get_recorded_region_ids()

Get the recording region ids that have been recorded using buffering

Returns:The region numbers that have active recording Return type:iterable of int

get_recording_region_base_address(txrx, placement)

Get the recording region base address

Parameters:

• txrx – the SpiNNMan instance
• placement – the placement object of the core to find the address of

Returns:

the base address of the recording region

static get_sdram_usage(send_buffer_times, send_buffer_max_space, recording_enabled)

is_in_injection_mode

Whether this vertex is actually in injection mode.

is_recording()

Deduce if the recorder is actually recording

mask

static n_regions_to_allocate(send_buffering, recording)

Get the number of regions that will be allocated

resources_required

The resources required by the vertex

Return type:pacman.model.resources.ResourceContainer

send_buffer_times

send_buffers

update_buffer(arg)

virtual_key

Module contents

class spinn_front_end_common.utility_models.CommandSender(label, constraints)

Bases: pacman.model.graphs.application.application_vertex.ApplicationVertex, spinn_front_end_common.abstract_models.abstract_generates_data_specification.AbstractGeneratesDataSpecification, spinn_front_end_common.abstract_models.abstract_has_associated_binary.AbstractHasAssociatedBinary, spinn_front_end_common.abstract_models.abstract_provides_outgoing_partition_constraints.AbstractProvidesOutgoingPartitionConstraints

A utility for sending commands to a vertex (possibly an external device) at fixed times in the simulation

add_commands(start_resume_commands, pause_stop_commands, timed_commands, vertex_to_send_to)

Add commands to be sent down a given edge

Parameters:

• start_resume_commands (iterable of spinn_front_end_common.utility_models.multi_cast_command.MultiCastCommand) – The commands to send when the simulation starts or resumes from pause
• pause_stop_commands (iterable of spinn_front_end_common.utility_models.multi_cast_command.MultiCastCommand) – the commands to send when the simulation stops or pauses after running
• timed_commands (iterable of spinn_front_end_common.utility_models.multi_cast_command.MultiCastCommand) – The commands to send at specific times
• vertex_to_send_to – The vertex these commands are to be sent to

create_machine_vertex(vertex_slice, resources_required, label=None, constraints=None)

Create a machine vertex from this application vertex

Parameters:

• vertex_slice – The slice of atoms that the machine vertex will cover
• resources_required – the resources used by the machine vertex
• constraints – Constraints to be passed on to the machine vertex

dependent_vertices()

Return the vertices which this vertex depends upon

edges_and_partitions()

generate_data_specification(*args, **kwargs)

Generate a data specification

Parameters:

• spec (data_specification.DataSpecificationGenerator) – The data specification to write to
• placement – the placement object this spec is associated with

Return type:

None

get_binary_file_name()

Get the binary name to be run for this vertex

Return type:str Return a string representation of the models binary

get_binary_start_type()

Get the start type of the binary to be run

Return type:spinn_front_end_common.utilities.utility_objs.executable_start_type.ExecutableStartType

get_outgoing_partition_constraints(partition)

Get constraints to be added to the given edge that comes out of this vertex

Parameters:partition – An edge that comes out of this vertex Returns:A list of constraints Return type:list of pacman.model.constraints.abstract_constraint.AbstractConstraint

get_resources_used_by_atoms(vertex_slice)

Get the separate resource requirements for a range of atoms

Parameters:vertex_slice (pacman.model.graph.slice.Slice) – the low value of atoms to calculate resources from Returns:a Resource container that contains a CPUCyclesPerTickResource, DTCMResource and SDRAMResource Return type:pacman.model.resources.ResourceContainer Raises:None – this method does not raise any known exception

n_atoms

The number of atoms in the vertex

Returns:The number of atoms Return type:int

class spinn_front_end_common.utility_models.CommandSenderMachineVertex(constraints, resources_required, label, commands_at_start_resume, commands_at_pause_stop, timed_commands)

Bases: pacman.model.graphs.machine.machine_vertex.MachineVertex, spinn_front_end_common.interface.provenance.provides_provenance_data_from_machine_impl.ProvidesProvenanceDataFromMachineImpl, spinn_front_end_common.abstract_models.abstract_has_associated_binary.AbstractHasAssociatedBinary

BINARY_FILE_NAME = 'command_sender_multicast_source.aplx'

class DATA_REGIONS

Bases: enum.Enum

COMMANDS_AT_START_RESUME = 3

COMMANDS_AT_STOP_PAUSE = 4

COMMANDS_WITH_ARBITRARY_TIMES = 2

PROVENANCE_REGION = 5

SETUP = 1

SYSTEM_REGION = 0

TOTAL_REQUIRED_MALLOCS = 5

generate_data_specification(spec, placement, machine_time_step, time_scale_factor, n_machine_time_steps)

get_binary_file_name()

Get the binary name to be run for this vertex

Return type:str

Return a string representation of the models binary

get_binary_start_type()

Get the start type of the binary to be run

Return type:spinn_front_end_common.utilities.utility_objs.executable_start_type.ExecutableStartType

static get_n_command_bytes(commands)

static get_number_of_mallocs_used_by_dsg()

static get_timed_commands_bytes(timed_commands)

resources_required

The resources required by the vertex

Return type:pacman.model.resources.ResourceContainer

class spinn_front_end_common.utility_models.LivePacketGather(hostname, port, board_address=None, tag=None, strip_sdp=True, use_prefix=False, key_prefix=None, prefix_type=None, message_type=<EIEIOType.KEY_32_BIT: 2>, right_shift=0, payload_as_time_stamps=True, use_payload_prefix=True, payload_prefix=None, payload_right_shift=0, number_of_packets_sent_per_time_step=0, constraints=None, label=None)

Bases: spinn_front_end_common.abstract_models.abstract_generates_data_specification.AbstractGeneratesDataSpecification, spinn_front_end_common.abstract_models.abstract_has_associated_binary.AbstractHasAssociatedBinary, pacman.model.graphs.application.application_vertex.ApplicationVertex

A model which stores all the events it receives during a timer tick and then compresses them into Ethernet packets and sends them out of a spinnaker machine.

create_machine_vertex(vertex_slice, resources_required, label=None, constraints=None)

Create a machine vertex from this application vertex

Parameters:

• vertex_slice – The slice of atoms that the machine vertex will cover
• resources_required – the resources used by the machine vertex
• constraints – Constraints to be passed on to the machine vertex

generate_data_specification(spec, placement)

Generate a data specification

Parameters:

• spec (data_specification.DataSpecificationGenerator) – The data specification to write to
• placement – the placement object this spec is associated with

Return type:

None

get_binary_file_name()

Get the binary name to be run for this vertex

Return type:str

get_binary_start_type()

Get the start type of the binary to be run

Return type:spinn_front_end_common.utilities.utility_objs.executable_start_type.ExecutableStartType

get_resources_used_by_atoms(vertex_slice)

Get the separate resource requirements for a range of atoms

Parameters:vertex_slice (pacman.model.graph.slice.Slice) – the low value of atoms to calculate resources from Returns:a Resource container that contains a CPUCyclesPerTickResource, DTCMResource and SDRAMResource Return type:pacman.model.resources.ResourceContainer Raises:None – this method does not raise any known exception

n_atoms

The number of atoms in the vertex

Returns:The number of atoms Return type:int

class spinn_front_end_common.utility_models.LivePacketGatherMachineVertex(label, use_prefix=False, key_prefix=None, prefix_type=None, message_type=<EIEIOType.KEY_32_BIT: 2>, right_shift=0, payload_as_time_stamps=True, use_payload_prefix=True, payload_prefix=None, payload_right_shift=0, number_of_packets_sent_per_time_step=0, hostname=None, port=None, strip_sdp=None, board_address=None, tag=None, constraints=None)

Bases: pacman.model.graphs.machine.machine_vertex.MachineVertex, spinn_front_end_common.interface.provenance.provides_provenance_data_from_machine_impl.ProvidesProvenanceDataFromMachineImpl, spinn_front_end_common.abstract_models.abstract_generates_data_specification.AbstractGeneratesDataSpecification, spinn_front_end_common.abstract_models.abstract_has_associated_binary.AbstractHasAssociatedBinary, spinn_front_end_common.abstract_models.abstract_supports_database_injection.AbstractSupportsDatabaseInjection

N_ADDITIONAL_PROVENANCE_ITEMS = 2

generate_data_specification(*args, **kwargs)

Generate a data specification

Parameters:

• spec (data_specification.DataSpecificationGenerator) – The data specification to write to
• placement – the placement object this spec is associated with

Return type:

None

get_binary_file_name()

Get the binary name to be run for this vertex

Return type:str

get_binary_start_type()

Get the start type of the binary to be run

Return type:spinn_front_end_common.utilities.utility_objs.executable_start_type.ExecutableStartType

static get_cpu_usage()

Get the CPU used by this vertex

Returns:0 Return type:int

static get_dtcm_usage()

Get the DTCM used by this vertex

get_provenance_data_from_machine(transceiver, placement)

Get provenance from the machine

Parameters:

• transceiver – spinnman interface to the machine
• placement – the location of this vertex on the machine

static get_sdram_usage()

Get the SDRAM used by this vertex

is_in_injection_mode

Whether this vertex is actually in injection mode.

resources_required

The resources required by the vertex

Return type:pacman.model.resources.ResourceContainer

class spinn_front_end_common.utility_models.MultiCastCommand(key, payload=None, time=None, repeat=0, delay_between_repeats=0)

Bases: object

A command to be sent to a vertex

Parameters:

• key (int) – The key of the command
• payload (int) – The payload of the command
• time (int) – The time within the simulation at which to send the command, or None if this is not a timed command
• repeat (int) – The number of times that the command should be repeated after sending it once. This could be used to ensure that the command is sent despite lost packets. Must be between 0 and 65535
• delay_between_repeats (int) – The amount of time in micro seconds to wait between sending repeats of the same command. Must be between 0 and 65535, and must be 0 if repeat is 0

Raises:

SpynnakerException – If the repeat or delay are out of range

delay_between_repeats

is_payload

Determine if this command has a payload. By default, this returns True if the payload passed in to the constructor is not None, but this can be overridden to indicate that a payload will be generated, despite None being passed to the constructor

Returns:True if there is a payload, False otherwise Return type:bool

is_timed

key

payload

Get the payload of the command.

Returns:The payload of the command, or None if there is no payload Return type:int

repeat

time

class spinn_front_end_common.utility_models.ReverseIpTagMultiCastSource(n_keys, label=None, constraints=None, max_atoms_per_core=9223372036854775807, board_address=None, receive_port=None, receive_sdp_port=1, receive_tag=None, receive_rate=10, virtual_key=None, prefix=None, prefix_type=None, check_keys=False, send_buffer_times=None, send_buffer_partition_id=None, send_buffer_max_space=1048576, send_buffer_space_before_notify=640, buffer_notification_ip_address=None, buffer_notification_port=None, buffer_notification_tag=None, reserve_reverse_ip_tag=False)

Bases: pacman.model.graphs.application.application_vertex.ApplicationVertex, spinn_front_end_common.abstract_models.abstract_generates_data_specification.AbstractGeneratesDataSpecification, spinn_front_end_common.abstract_models.abstract_has_associated_binary.AbstractHasAssociatedBinary, spinn_front_end_common.abstract_models.abstract_provides_outgoing_partition_constraints.AbstractProvidesOutgoingPartitionConstraints, spinn_front_end_common.abstract_models.impl.provides_key_to_atom_mapping_impl.ProvidesKeyToAtomMappingImpl

A model which will allow events to be injected into a spinnaker machine and converted into multicast packets.

Parameters:

• n_keys – The number of keys to be sent via this multicast source
• label – The label of this vertex
• constraints – Any initial constraints to this vertex
• board_address – The IP address of the board on which to place this vertex if receiving data, either buffered or live (by default, any board is chosen)
• receive_port – The port on the board that will listen for incoming event packets (default is to disable this feature; set a value to enable it)
• receive_sdp_port – The SDP port to listen on for incoming event packets (defaults to 1)
• receive_tag – The IP tag to use for receiving live events (uses any by default)
• receive_rate – The estimated rate of packets that will be sent by this source
• virtual_key – The base multicast key to send received events with (assigned automatically by default)
• prefix – The prefix to “or” with generated multicast keys (default is no prefix)
• prefix_type – Whether the prefix should apply to the upper or lower half of the multicast keys (default is upper half)
• check_keys – True if the keys of received events should be verified before sending (default False)
• send_buffer_times – An array of arrays of times at which keys should be sent (one array for each key, default disabled)
• send_buffer_partition_id – The id of the partition containing the edges down which the events are to be sent
• send_buffer_max_space – The maximum amount of space to use of the SDRAM on the machine (default is 1MB)
• send_buffer_space_before_notify – The amount of space free in the sending buffer before the machine will ask the host for more data (default setting is optimised for most cases)
• buffer_notification_ip_address – The IP address of the host that will send new buffers (must be specified if a send buffer is specified or if recording will be used)
• buffer_notification_port – The port that the host that will send new buffers is listening on (must be specified if a send buffer is specified, or if recording will be used)
• buffer_notification_tag – The IP tag to use to notify the host about space in the buffer (default is to use any tag)

create_machine_vertex(vertex_slice, resources_required, label=None, constraints=None)

Create a machine vertex from this application vertex

Parameters:

• vertex_slice – The slice of atoms that the machine vertex will cover
• resources_required – the resources used by the machine vertex
• constraints – Constraints to be passed on to the machine vertex

enable_recording(record_buffer_size=1048576, buffer_size_before_receive=16384, time_between_requests=0)

generate_data_specification(spec, placement)

Generate a data specification

Parameters:

• spec (data_specification.DataSpecificationGenerator) – The data specification to write to
• placement – the placement object this spec is associated with

Return type:

None

get_binary_file_name()

Get the binary name to be run for this vertex

Return type:str

get_binary_start_type()

Get the start type of the binary to be run

Return type:spinn_front_end_common.utilities.utility_objs.executable_start_type.ExecutableStartType

get_outgoing_partition_constraints(partition)

Get constraints to be added to the given edge that comes out of this vertex

Parameters:partition – An edge that comes out of this vertex Returns:A list of constraints Return type:list of pacman.model.constraints.abstract_constraint.AbstractConstraint

get_resources_used_by_atoms(vertex_slice)

Get the separate resource requirements for a range of atoms

Parameters:vertex_slice (pacman.model.graph.slice.Slice) – the low value of atoms to calculate resources from Returns:a Resource container that contains a CPUCyclesPerTickResource, DTCMResource and SDRAMResource Return type:pacman.model.resources.ResourceContainer Raises:None – this method does not raise any known exception

n_atoms

The number of atoms in the vertex

Returns:The number of atoms Return type:int

send_buffer_times

class spinn_front_end_common.utility_models.ReverseIPTagMulticastSourceMachineVertex(*args, **kwargs)

Bases: pacman.model.graphs.machine.machine_vertex.MachineVertex, spinn_front_end_common.abstract_models.abstract_generates_data_specification.AbstractGeneratesDataSpecification, spinn_front_end_common.abstract_models.abstract_has_associated_binary.AbstractHasAssociatedBinary, spinn_front_end_common.abstract_models.abstract_supports_database_injection.AbstractSupportsDatabaseInjection, spinn_front_end_common.interface.provenance.provides_provenance_data_from_machine_impl.ProvidesProvenanceDataFromMachineImpl, spinn_front_end_common.abstract_models.abstract_provides_outgoing_partition_constraints.AbstractProvidesOutgoingPartitionConstraints, spinn_front_end_common.interface.buffer_management.buffer_models.sends_buffers_from_host_pre_buffered_impl.SendsBuffersFromHostPreBufferedImpl, spinn_front_end_common.interface.buffer_management.buffer_models.abstract_receive_buffers_to_host.AbstractReceiveBuffersToHost, spinn_front_end_common.abstract_models.abstract_recordable.AbstractRecordable

A model which allows events to be injected into spinnaker and converted in to multicast packets

enable_recording(record_buffer_size=1048576, buffer_size_before_receive=16384, time_between_triggers=0)

Enable recording of the keys sent

Parameters:

• record_buffer_size (int) – The size of the recording buffer in bytes. Note that when using automatic pause and resume, this will be used as the minimum size of the buffer
• buffer_size_before_receive (int) – The size that the buffer can grow to before a read request is issued to the host (in bytes)
• time_between_triggers (int) – The minimum time between the sending of read requests

generate_data_specification(*args, **kwargs)

Generate a data specification

Parameters:

• spec (data_specification.DataSpecificationGenerator) – The data specification to write to
• placement – the placement object this spec is associated with

Return type:

None

get_binary_file_name()

Get the binary name to be run for this vertex

Return type:str

get_binary_start_type()

Get the start type of the binary to be run

Return type:spinn_front_end_common.utilities.utility_objs.executable_start_type.ExecutableStartType

static get_cpu_usage()

static get_dtcm_usage()

get_minimum_buffer_sdram_usage()

Get the minimum amount of SDRAM to reserve for buffers

get_n_timesteps_in_buffer_space(buffer_space, machine_time_step)

Get the number of timesteps that can be stored fully in the given buffer space in bytes

Parameters:

• buffer_space – The buffer space in bytes
• machine_time_step – The size of each time step

Returns:

The number of time steps that can be stored in the buffer

Return type:

int

get_outgoing_partition_constraints(partition)

Get constraints to be added to the given edge that comes out of this vertex

Parameters:partition – An edge that comes out of this vertex Returns:A list of constraints Return type:list of pacman.model.constraints.abstract_constraint.AbstractConstraint

get_provenance_data_from_machine(transceiver, placement)

Get an iterable of provenance data items

Parameters:

• transceiver – the SpinnMan interface object
• placement – the placement of the object

Returns:

iterable of ProvenanceDataItem

get_recorded_region_ids()

Get the recording region ids that have been recorded using buffering

Returns:The region numbers that have active recording Return type:iterable of int

get_recording_region_base_address(txrx, placement)

Get the recording region base address

Parameters:

• txrx – the SpiNNMan instance
• placement – the placement object of the core to find the address of

Returns:

the base address of the recording region

static get_sdram_usage(send_buffer_times, send_buffer_max_space, recording_enabled)

is_in_injection_mode

Whether this vertex is actually in injection mode.

is_recording()

Deduce if the recorder is actually recording

mask

static n_regions_to_allocate(send_buffering, recording)

Get the number of regions that will be allocated

resources_required

The resources required by the vertex

Return type:pacman.model.resources.ResourceContainer

send_buffer_times

send_buffers

update_buffer(arg)

virtual_key