spynnaker.pyNN.models.utility_models.delays package

Module contents

class spynnaker.pyNN.models.utility_models.delays.DelayBlock(n_delay_stages, delay_per_stage, vertex_slice)

Bases: object

A block of delays for a vertex.

Parameters:

• n_delay_stages (int) –
• delay_per_stage (int) –
• vertex_slice (Slice) –

add_delay(source_id, stage)

Parameters:

• source_id (int) –
• stage (int) –

delay_block

Return type:ndarray

class spynnaker.pyNN.models.utility_models.delays.DelayExtensionMachineVertex(resources_required, label, constraints=None, app_vertex=None, vertex_slice=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_has_associated_binary.AbstractHasAssociatedBinary, spinn_front_end_common.abstract_models.abstract_generates_data_specification.AbstractGeneratesDataSpecification

Parameters:

• resources_required (ResourceContainer) – The resources required by the vertex
• label (str) – The optional name of the vertex
• constraints (iterable(AbstractConstraint)) – The optional initial constraints of the vertex
• app_vertex (ApplicationVertex) – The application vertex that caused this machine vertex to be created. If None, there is no such application vertex.
• vertex_slice (Slice) – The slice of the application vertex that this machine vertex implements.

BACKGROUND_MAX_QUEUED_NAME = 'Max_backgrounds_queued'

BACKGROUND_OVERLOADS_NAME = 'Times_the_background_queue_overloaded'

COUNT_SATURATION_NAME = 'saturation_count'

DELAYED_FOR_TRAFFIC_NAME = 'Number_of_times_delayed_to_spread_traffic'

class EXTRA_PROVENANCE_DATA_ENTRIES

Bases: enum.Enum

An enumeration.

MAX_BACKGROUND_QUEUED = 11

N_BACKGROUND_OVERLOADS = 12

N_BUFFER_OVERFLOWS = 4

N_DELAYS = 5

N_LATE_SPIKES = 10

N_PACKETS_ADDED = 2

N_PACKETS_DROPPED_DUE_TO_INVALID_KEY = 9

N_PACKETS_LOST_DUE_TO_COUNT_SATURATION = 7

N_PACKETS_PROCESSED = 1

N_PACKETS_RECEIVED = 0

N_PACKETS_SENT = 3

N_PACKETS_WITH_INVALID_NEURON_IDS = 8

N_TIMES_TDMA_FELL_BEHIND = 6

INPUT_BUFFER_LOST_NAME = 'Times_the_input_buffer_lost_packets'

INVALID_KEY_COUNT_NAME = 'invalid_key_count'

INVALID_NEURON_ID_COUNT_NAME = 'invalid_neuron_count'

MISMATCH_ADDED_FROM_PROCESSED_NAME = 'Number_of_packets_added_to_delay_slot'

N_EXTRA_PROVENANCE_DATA_ENTRIES = 13

N_LATE_SPIKES_NAME = 'Number_of_late_spikes'

N_PACKETS_PROCESSED_NAME = 'Number_of_packets_processed'

N_PACKETS_RECEIVED_NAME = 'Number_of_packets_received'

N_PACKETS_SENT_NAME = 'Number_of_packets_sent'

gen_on_machine()

Determine if the given slice needs to be generated on the machine

Parameters:vertex_slice (Slice) – Return type:bool

generate_data_specification(spec, placement, machine_graph, routing_infos)

Generate a data specification.

Parameters:

• spec (DataSpecificationGenerator) – The data specification to write to
• placement (Placement) – The placement the vertex is located at
• machine_graph (MachineGraph) –
• routing_infos (RoutingInfo) –

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:ExecutableType

get_n_keys_for_partition(_partition)

Get the number of keys required by the given partition of edges.

Parameters:_partition (OutgoingEdgePartition) – An partition that comes out of this vertex Returns:The number of keys required Return type:int

parse_extra_provenance_items(label, names, provenance_data)

Convert the remaining provenance words (those not in the standard set) into provenance items.

Called by get_provenance_data_from_machine()

Parameters:

• label (str) – A descriptive label for the vertex (derived from label and placed position) to be used for provenance error reporting to the user.
• names (list(str)) – The base names describing the location of the machine vertex producing the provenance.
• provenance_data (list(int)) – The list of words of raw provenance data.

Returns:

The interpreted provenance items.

Return type:

iterable(ProvenanceDataItem)

resources_required

The resources required by the vertex

Return type:ResourceContainer

write_delay_parameters(spec, vertex_slice, key, incoming_key, incoming_mask)

Generate Delay Parameter data

Parameters:

• spec (DataSpecificationGenerator) –
• vertex_slice (Slice) –
• key (int) –
• incoming_key (int) –
• incoming_mask (int) –

class spynnaker.pyNN.models.utility_models.delays.DelayExtensionVertex(n_neurons, delay_per_stage, max_delay_to_support, source_vertex, constraints=None, label='DelayExtension')

Bases: spinn_front_end_common.abstract_models.impl.tdma_aware_application_vertex.TDMAAwareApplicationVertex, spynnaker.pyNN.models.abstract_models.abstract_has_delay_stages.AbstractHasDelayStages, spinn_front_end_common.abstract_models.abstract_provides_outgoing_partition_constraints.AbstractProvidesOutgoingPartitionConstraints

Provide delays to incoming spikes in multiples of the maximum delays of a neuron (typically 16 or 32)

Parameters:

• n_neurons (int) – the number of neurons
• delay_per_stage (int) – the delay per stage
• max_delay_to_support (int) – the max delay this will cover
• source_vertex (ApplicationVertex) – where messages are coming from
• constraints (iterable(AbstractConstraint)) – the vertex constraints
• label (str) – the vertex label

MAX_DTCM_AVAILABLE = 54756

MAX_TICKS_POSSIBLE_TO_SUPPORT = 128

MISMATCHED_DELAY_PER_STAGE_ERROR_MESSAGE = 'The delay per stage is already set to {}, and therefore {} is not yet feasible. Please report it to Spinnaker user mail list.'

SAFETY_FACTOR = 5000

add_delays(vertex_slice, source_ids, stages)

Add delayed connections for a given vertex slice

Parameters:

• vertex_slice (Slice) –
• source_ids (list(int)) –
• stages (list(int)) –

add_generator_data(max_row_n_synapses, max_delayed_row_n_synapses, pre_slices, post_slices, pre_vertex_slice, post_vertex_slice, synapse_information, max_stage, max_delay_per_stage)

Add delays for a connection to be generated

Parameters:

• max_row_n_synapses (int) – The maximum number of synapses in a row
• max_delayed_row_n_synapses (int) – The maximum number of synapses in a delay row
• pre_slices (list(Slice)) – The list of slices of the pre application vertex
• post_slices (list(Slice)) – The list of slices of the post application vertex
• pre_vertex_slice (Slice) – The slice of the pre applcation vertex currently being considered
• post_vertex_slice (Slice) – The slice of the post application vertex currently being considered
• synapse_information (SynapseInformation) – The synapse information of the connection
• synapse_information –
• max_stage (int) – The maximum delay stage
• machine_time_step (int) – sim machine time step

delay_blocks_for(vertex_slice)

delay_generator_data(vertex_slice)

delay_per_stage

drop_late_spikes

gen_on_machine(vertex_slice)

Determine if the given slice needs to be generated on the machine

Parameters:vertex_slice (Slice) – Return type:bool

static get_max_delay_ticks_supported(delay_ticks_at_post_vertex)

get_outgoing_partition_constraints(partition)

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

Parameters:partition (AbstractOutgoingEdgePartition) – An edge that comes out of this vertex Returns:A list of constraints Return type:list(AbstractConstraint)

n_atoms

The number of atoms in the vertex

Return type:int

n_delay_stages

The maximum number of delay stages required by any connection out of this delay extension vertex

Return type:int The maximum number of delay stages required by any connection out of this delay extension vertex Return type:int

set_new_n_delay_stages_and_delay_per_stage(new_post_vertex_n_delay, new_max_delay)

source_vertex

Return type:ApplicationVertex