phase: 4A
paths:
  connectome_root: /data/digital-drosophila/datasets/male-cns-v1.0/processed/neuron-only
  experiment_root: /data/digital-drosophila/experiments/phase4a-baseline

expected_graph:
  neurons: 166700
  directed_edges: 25582938
  synaptic_contact_weight_sum: 124177617
  isolated_neurons: 217
  self_loops: 101

device:
  required_name_substring: RTX 4090
  launcher_visible_gpu_uuid: GPU-79f3a85d-adce-7833-7003-6488140ca596
  mixed_multi_gpu: false

model:
  integrator: forward_euler
  dt_ms: 0.1
  membrane_tau_ms: 20.0
  synaptic_tau_ms: 5.0
  refractory_ms: 2.2
  resting_potential_mv: -52.0
  reset_potential_mv: -52.0
  threshold_mv: -45.0
  synaptic_delay_ms: 1.8
  parameter_provenance: FlyWire-inspired 2024 LIF baseline; not MaleCNS measured single-cell parameters

sign_policy:
  neurotransmitter_sign:
    acetylcholine: 1
    gaba: -1
    glutamate: -1
    dopamine: 1
    octopamine: 1
    serotonin: 1
    histamine: -1
  histamine_policy_note: explicitly configured inhibitory baseline assumption; not silently inferred
  unknown_sign: 0
  unclear_sign: 0
  unmapped_policy: error
  unmapped_sign: 0

weights:
  transform: sqrt
  supported_transforms: [linear, sqrt, log1p]
  scale: 0.05
  chunk_edges: 2000000
  units: model synaptic-state increment per presynaptic spike
  formula: effective_weight = presynaptic_sign * scale * f(raw_synapse_count)
  preserve_raw_int64: true

stimulations:
  single_neuron:
    kind: single_neuron_pulse
    neuron_idx: 0
    start_ms: 2.0
    duration_ms: 1.0
    amplitude_mv_equivalent: 400.0
  known_type_AMMC005:
    kind: known_type_pulse
    type_name: AMMC005
    max_neurons: 12
    start_ms: 5.0
    duration_ms: 1.0
    amplitude_mv_equivalent: 400.0
  sparse_poisson:
    kind: sparse_poisson
    target_fraction: 0.001
    rate_hz: 20.0
    event_amplitude_mv_equivalent: 1600.0

smoke_tests:
  - name: smoke-10ms-single-neuron
    duration_ms: 10.0
    stimulation: single_neuron
    seed: 41001
  - name: smoke-100ms-known-type
    duration_ms: 100.0
    stimulation: known_type_AMMC005
    seed: 41002
  - name: smoke-1s-sparse-poisson
    duration_ms: 1000.0
    stimulation: sparse_poisson
    seed: 41003

cpu_gpu_reference:
  seed: 41100
  subgraph_neurons: 512
  steps: 100
  pulse_start_step: 5
  pulse_steps: 10
  pulse_neurons: 4
  pulse_amplitude_mv_equivalent: 400.0
  absolute_tolerance: 1.0e-10

validation:
  finite_check_interval_steps: 100
  explosive_step_fraction: 0.1
  memory_growth_tolerance_bytes: 10485760

output:
  spike_representation: event_table_timestamp_ms_neuron_idx
  dense_time_by_neuron_forbidden: true
  rate_window_ms: 10.0

reproducibility:
  seed: 41000
  deterministic_synthetic_inputs: true